Sourcing Guide for Circular Lamp: Lighting is one of the most important of all building systems, and we offer buyers thousands products of lights to choose from including modern, indoor, outdoor and bathroom lighting. Fluorescents are effective lighting for kitchens, valences, comices, and fascias. Compact Fluorescent Lamp (CFL) is the smaller form of fluorescent tubes, which is easy to install in any Lamp fixtures. The compact fluorescent lamp has a structure, which assures the necessary discharge path length by being bent in the direction of the attachment depth t. In addition, since the lighting circuit is arranged on the bottom 34 of the lighting apparatus, the attachment depth is increased. These light bulbs contain mercury. T9 circular LED tubes can be connected to MAINS … 5. [0026] As described above, according to the circular fluorescent lamp unit and the lighting apparatus using this lamp unit of the present invention, it is possible to provide the fluorescent lamp which has the higher light flux and higher efficiency than those of a light source of the prior art down light unit such as the compact fluorescent lamp unit or the krypton light unit and can be attached in a narrower space, and the lighting apparatus using this fluorescent lamp. 1 TABLE 1 Prior Art Circular Compact Embodiment (FCL15EX-N) (FDL18EX-N) Electrical Lamp Wattage (W) 18 15 18 Characteristics Lamp Light Flux (1 m) 1220 660 1100 Lamp Efficiency 67.8 44 59 (1 m/w) System Wattage 20 19 21.5 Consumption (W) System Efficiency 61 34.7 51.2 (1 m/W) Structure Lamp Tube Outer 16.0 26.0 16.5 Diameter d (mm) Ring Outer 155 170 — Diameter D1 (mm) Outer — — 39 Diameter D3 (mm) Length — — 129 L (mm) Lighting Attachment 170 255 170 Apparatus Opening Diameter D2, D4 (mm) Attachment 60 114 175 Depth (mm). Circular a… No. The cap 3 is attached to a portion where the outer both ends of the glass bulb 2 abut on each other so as to cut across the opposed end portions of the glass bulb, and metal connection pins 41 and 51 provided to the cap 3 are electrically connected to the electrodes 4 and 5, respectively, in the glass bulb. The invention comprises, briefly and in a preferred embodiment, a circular lamp unit having a compact central hub containing a ballast reactor and provided with a screw base. Ceiling fixtures tend use a circline fluorescent light which can be found in residential applications. Rolling circle amplification (RCA), known for its simplicity, is presumably compatible with LAMP in single-tube reaction detection based on Bst DNA polymerase to realize universality. When comparing in terms of the system efficiency, the system efficiency of this embodiment is 61.0/51.2=1.19-fold of that of the prior art compact fluorescent lamp unit, and the high system efficiency property in this embodiment is further prominent as compared with the lamp efficiency in the lamp unit itself. Use the filters on the left to find the perfect circular tube. Sourcing Guide for Circular Compact Fluorescent Lamps: Find more online shopping business in less effort by choosing the right China instruments & meters suppliers on our website. A principal object of the invention is to provide an improved screw-in circular fluorescent lamp unit that is attractive in appearance and is easy to attach to and remove from lamp sockets. Dimming of the lamp is possible with installation of compatible electronic ballast. [0022] On the other hand, in regard to the system wattage consumption and the system efficiency at a temperature of 25° C. as the entire light apparatus including the fluorescent lamp unit and the light circuit, the system wattage consumption=20 W and the system efficiency=61.0 1 m/W in this embodiment, whereas the system wattage consumption=21.5 W and the system efficiency=51.2 1 m/W in the prior art compact fluorescent lamp unit. In addition to the above, the use of Biopolymers National Lighting Product information Program defines CFL as fluorescent lamps that have a tube of diameter of 16 mm or less and circular CFLs1. [0003] 2. Fluorescents provide a  shadow free lighting in all applications. [0019] FIG. Luminescence Colour Dimensions (mm) Cap Lamp Wattage (W) Lamp current (A) Luminous flux (rm) Life (h) Applicable Tube Lamp Dia. Business and Government customers enjoy priority service, special prices and net30 payment terms. An electric current in the gas energizes mercury vapor which delivers ultraviolet radiation through discharge process and the ultraviolet radiation causes the phosphor coating of the lamp inner wall to radiate visible light. This circular TL5 lamp tube diameter 16 mm offers extended design possibilities. ... that lamp's color temperature will be 4100 K, which is a common tri-phosphor cool white fluorescent lamp. Lamps of various size are available, particulars of the commonly used standard 230-V 80-watt size being given below: Size ― 1.5 m long, 2.54 cm diameter (Industrial purpose). Nominal voltage 115V Nominal wattage 40.0W Rated lamp efficacy (standard condition) 77 lm/W Rated wattage 40.00W Length 20W FLR20S・W/M-X White 32.5 580 G13 20 0.360 1190 8500 ̶ FLR20S・D/M Daylight 32.5 580 G13 20 0.360 1030 8500 ̶ 40W Standard Size of Fluorescent Lamp. Each annulus may be made from glass tubing where each annulus is comprised of a … 3, and a ring outer diameter D1 of the ring=155 mm. George Inman later teamed with General Electric to create a practical fluorescent lamp, sold in 1938 and patented in 1941. Moreover, the possibility of being attached in a narrower space is also demanded. [0017] Table 1 shows a circular fluorescent lamp unit having lamp wattage of 18 W according to this embodiment, a prior art compact fluorescent lamp unit having the same lamp wattage (FDL18EX-N as an example) and a prior art circular fluorescent lamp unit having a ring outer diameter closest to that of this embodiment (FCL15EX-N as an example) by comparing the wattage, the light flux and the efficiency in the lamp unit itself (the lamp wattage, the lamp light flux and the lamp efficiency, respectively) and the wattage consumption and the efficiency as the entire lighting apparatus having the lamp unit attached thereto (the system wattage consumption and the system efficiency, respectively). [0023] Incidentally, although not illustrated in the table in particular, when the compact fluorescent lamp unit (FDL18EX-N) having the lamp wattage of 18 W is substituted by a lighting apparatus using a krypton lamp unit, the attachment depth t is approximately t=90 mm to 160 mm although it depends on design, and it may be closer to that of the lighting apparatus according to this embodiment rather than the compact fluorescent lamp unit in some cases. 2 is a side cross-sectional view showing a lighting apparatus according to an embodiment of the present invention being embedded in a ceiling. Therefore, the circular fluorescent lamp unit according to this embodiment has the lamp efficiency higher than that of the prior art circular fluorescent lamp unit. A typical unit has a central housing containing a ballast reactor and provided with a screw base, and a circular fluorescent lamp surrounds the reactor housing and is held thereby by means of brackets or spokes attached to and extending … Should you require a return please contact us for hassle-free return and full refund. [0011] FIG. Furthermore, although not shown, a socket that is connected to the cap 3 of the lamp unit 1 is provided. Fluorescent Lamps T8. That is because a lighting apparatus with the higher energy consumption efficiency is demanded in addition to the necessity of reduction in size. The lamp provides a warm-white evenly distributed diffuse light. The circular fluorescent lamp unit according to claim 1, wherein lamp wattage of said circular fluorescent lamp unit is not more than 20 W. 3. Lumens: 3210. Thus, lighting is performed with a high-frequency voltage not less than 10 kHz from an outside lamp lighting circuit through the connection pins 41 and 51. On the contrary, in case of the fluorescent lamp unit according to this embodiment, a glass temperature during lighting is only 55° C. or thereabout. A fluorescent lamp is a low weight mercury vapour lamp that uses fluorescence to deliver visible light. The interface was first described in Annex E, IEC60929 standard for fluorescent lamp ballast. The parent to the modern fluorescent lamp was invented in the late 1890s by Peter Cooper Hewitt.The Cooper Hewitt lamps were used for photographic studios and industries. Fluorescent lamps in circular shape. Thus, increase in temperature of the apparatus stays at a value at which attachment on a ceiling surface subjected to the insulation is possible, and the degree of freedom with respect to an installation position of the circular fluorescent lamp unit according to this embodiment is larger than that of the krypton light unit. [0014] FIG. However, the duration of life of the krypton lamp unit is 2000 hours, and this is extremely shorter than 9000 hours, which is the duration of life of the fluorescent lamp unit according to this embodiment. [0001] 1. 1. A tube outer diameter of the glass bulb has a range of 13 mm to 20 mm and a ring outer diameter of the ring has a range of 145 mm to 170 mm. Actual lifetime may vary dependent upon the type of fitting used, or product application. Moreover, it is often the case that a light source of the down light unit is installed at a relatively high position where replacement of the lamp unit is difficult, the low frequency of replacement is desirable. See Table 1) into a ring so that the both ends abut on each other as shown in FIG. A fluorescent lamp converts electrical energy into useful light much more efficiently than incandescent lamps. Fluorescent lamps. Therefore, a heat insulating material at an installation position must be removed, which considerably deteriorates the warmth retaining property in an installation space. There are a multitude of Fluorescent Tubes with a 4 Pin Cap/Base Type, and we have any one you may require right here! The lamp automatically turns on around 6 pm and turns off in the morning. In general, the fluorescent lamp unit must have a discharge path length required for obtaining a predetermined light flux, and the discharge path length is substantially equal to a tube length of the glass bulb. Dimension: 400mm x 400mm. The linear fluorescent light bulb or lamp is a type of gas-discharge lamp. [0002] The present invention relates to a circular fluorescent lamp unit and a lighting apparatus, and more particularly to a circular fluorescent lamp unit, which uses small wattage and is suitable for illumination in a relatively narrow place and a lighting apparatus using this circular fluorescent lamp unit. 2), and the prior art compact fluorescent lamp unit (D4) has that diameter of 170 mm. £42.13. He invented a fluorescent lamp in 1896 that used a coating of calcium tungstate as the fluorescing substance, excited by X-rays, but although it received a patent in 1907, it was not put into production. Non Integrated Compact Lamps. They are known for high energy efficiency, long life, and relatively low cost. [0005] FIG. 4 shows light distribution data as the entire lighting apparatus having the fluorescent lamp unit attached thereto by comparing this embodiment with the prior art compact fluorescent lamp unit. 2 is a cross-sectional view showing a side cross section of a lighting apparatus according to an embodiment of the present invention being embedded in a ceiling; [0013] FIG. T9 circular fluorescent lamps L 40W 865 C G10q L-40-865-C 4008321960139. £50.56 inc. VAT. Various types of screw-in circular fluorescent lamp units have been devised, for use in ceiling sockets and in table lamps and floor lamps. [0008] It is, therefore, an object of the present invention to provide a fluorescent lamp unit which has the higher light flux and higher efficiency than those of a conventional down light unit such as a compact fluorescent lamp unit or a krypton lamp unit and can be attached in a narrower space, and a lighting apparatus using this fluorescent lamp unit. These circular tubes are often used in wall ceilings and emit its light very natural. Circular fluorescent lamps 29 mm. The circular fluorescent lamp unit according to claim 1, wherein said circular fluorescent lamp unit is used for lighting with a high frequency which is not less than 10 kHz. [0004] For example, in a relatively large place such as a lobby in a hotel or an exhibition room in an art gallery or a museum, it is often the case that a down light unit from a ceiling fixture type lighting apparatus is used as accent illumination in addition to main illumination which illuminates a wide range in order to produce the atmosphere appropriate for that place. Fluorescent Lamps T5. Referring to FIG. [0025] On the other hand, the lamp efficiency of the krypton lamp unit is 14.4 1 m/W with the lamp wattage of 57 W, and the lamp efficiency of the circular fluorescent lamp unit according to this embodiment is much higher than that of the krypton lamp unit. Electrodes 4 and 5 for discharge are provided at both end portions covered by a cap 3, and inert gas including mercury is sealed in the glass bulb 2. Diameter: 29. Linear fluorescent bulbs come in a wide variety of lengths, diameters, wattages, and color temperatures. A lamp holder 12 for holding the fluorescent lamp unit is also attached to the base 15. Circular Tubes provide an even light in any direction due to its circular form. Features • Circular shape with 16mm bulb diameter • 2GX13 base • Up to 83lm/W lamp efficiency • Dimmable Non dimmable. © 2019 Superior Lighting All Rights Reserved. Fluorescents provide a uniform light level for office space and are also well suited for detailed task lighting in commercial applications. Each annulus is arranged concentrically where each annulus resides in an individual plane that is parallel to previous plane containing another annulus. A Typical application involving a Fluorescent lamp – An Auto Switching Light Here is a useful home circuit for you. Fluorescent bulbs can provide high light output to light large areas and are well suited for detailed task lighting in Industrial applications. T9 LED tubes are circular LED tubes, designed to replace circular fluorescent tubes. Please try again. Referring to FIG. Edmund Germer, Friedrich Meyer, and Hans Spanner patented a high-pressure vapor lamp in 1927. Make sure the wattage and color remain the same keep your light effect as your current lamp. Browse the Circline products and find the product that you are looking for by using the compare option. *The average rated life of a circular fluorescent lamp is as per IEC Standards. 7. Fluorescent lamps are a lamp type that is commonly used to provide illumination for settings such as commercial lighting, industrial lighting, classroom lighting, and retail lighting. Field of the Invention. Lighting designers favour this product for the unique shape coupled with high efficiency and excellent colour quality. In addition, improvement in the efficiency (ratio of light output/input wattage) is essential to a new commercial product in order to cope with a socially important and urgent problem, namely, energy saving. We take pride in offering brand name quality products at the best possible price. However, even if the lamp unit according to this embodiment is compared with the prior art compact fluorescent lamp unit, the higher lamp efficiency (67.8/59.0=1.15-fold) is demonstrated. Extremely economical, good quality of light, excellent luminous flux, excellent uniform illumination with no shadows. Fluorescents lights can be used in many applications Industrial, commercial, and residential. [0007] In recent years, aging in society advances, bright illumination is demanded, and the needs for illumination with the high luminous flux in the entire living space are increasing. They can also be used in residential applications as up lighting from cabinets, beams or coves and under cabinet lighting. The typical luminous efficacy of fluorescent lighting systems is 50–100 Lumens per watt, several times the efficacy of incandescent bulbs with comparable light output, but less than that of a typical LED bulb. Luminous efficiency ― 30 lumens per watt. A cap 23 is attached to the lamp unit 21, and the lamp unit is held in a lighting apparatus 30 by this cap 23 and also electrically connected to the lighting apparatus 30. Description of the Prior Art. Berlin, Germany 1927 - Electrode design in the fluorescent lamp: Albert W. Hull develops a tungsten electrode which would not disintegrate and created a stronger UV light. programs. [0018] Referring to Table 1, in terms of the attachment dimension including the lighting apparatus, the diameter of the opening for attachment is 170 in case of the fluorescent lamp unit according to this embodiment (D2: see FIG. T8 fluorescents are the most common for commercial and industrial use. Ceiling fixtures tend use a circline fluorescent light which can be found in residential  applications. DALI Dimmable Fluorescent Lamp Ballast Overview Application Note 5 V1.0, 2012-07 1Overview Digital Addressable Lighting Interface (DALI) is a communication protocol for lighting control in buildings. 4, taking how the light flux spreads into consideration provided that the illumination intensity (direct illumination intensity) obtained from the center of the lamp unit toward the lower part in the vertical direction is 100%, it can be understood that the light distribution characteristic of the fluorescent lamp unit according to this embodiment is wider. 6. Show more results. Thomas Edison briefly pursued fluorescent lighting for its commercial potential. Starter. Subsequently, it was ring-shaped fluorescent lamp enables the use of eye catching slender and shallow ceiling and wall mounted fixtures. This Warm White lamp offers high lumens per watt, good colour rendering and an impressive 10,000 hour lamp life. 1, the compact fluorescent lamp unit 21 is a commercially available compact fluorescent lamp unit (FDL18EX-N: lamp wattage 18 W), and this is a lamp unit obtained by joining two superposed glass bulbs having a tube outer diameter d=16.5 mm which are bent in the U shape as shown in Table 1. Furthermore, when viewing the entire system including the lighting apparatus, a diameter D4 of the opening of the ceiling surface is 170 mm, and an attachment depth t is 175 mm. Furthermore, the ring outer diameter, which is not less than 145 mm, is obtained in order to obtain the sufficient light flux. Mercury and inert gas are sealed within the glass bulb, and a cap which has a connection pin used for electrically connecting the electrodes in the glass bulb to the outside is attached so as to cut across the both ends of the glass bulb. 910 2500. Features: 29mm diameter circular fluorescent lamp. Moreover, a shade 13 is attached to the base 15 so as to cover all of the circular fluorescent lamp unit 1, the lighting circuit 11 or the like. [0020] Moreover, the attachment depth t is t=60 mm in this embodiment whereas t=175 mm in the prior art compact fluorescent lamp unit, and the attachment depth in this embodiment is approximately ⅓ of that of the prior art compact fluorescent lamp. In a circular fluorescent lamp unit comprising: a glass bulb 1 which is bent into a ring shape with both ends abutting on each other, has phosphor powder coated on an inner wall thereof, has electrodes provided at the respective ends in an inner space thereof and has mercury and inert gas sealed therein; and a cap which has connection pins used for electrically connecting the electrodes in the glass bulb with the outside and is attached so as to cut across the both ends of the glass bulb, a tube outer diameter of the glass bulb 1 is 13 mm to 20 mm, a ring outer diameter of the ring is 145 mm to 170 mm, lamp wattage is not more than 20 W, and lighting is carried out with a high frequency which is not less than 10 kHz. A replaceable circular lamp assembly … The sizes, light colors, and wattage of fluorescent tubes vary significantly. An improved dual circular fluorescent lamp having two or more lamp segments nested in an annular fashion to increase the lumen output. Incidentally, since the sufficient light flux cannot be obtained when the tube diameter is too small, the tube diameter of 13 to 20 mm is desirable. [0016] A lamp lighting circuit 11 is provided to a base 15 of the lighting apparatus at a portion corresponding to the inner side of the ring shape of the fluorescent lamp unit 1. 850mm Fluorescent T5 Germicidal Tube 21 Watt (4 Pin With Leads) QuickFind #: 12212. Furthermore, the down light unit is used in general dwelling as the main illumination in a relatively narrow place such as an entrance, a hallway, stairs or a lavatory or as auxiliary illumination in, e.g., a living room. It is to be noted that each wattage, light flux and efficiency mentioned above are all values when the ambient temperature is 25° C., the lamp efficiency is defined as the lamp light flux/lamp wattage and the system efficiency is defined as the lamp light flux/system wattage consumption. Incidentally, although not shown in particular, when a krypton lamp unit (for example, LDS100/110V57W-C-K) is used, the structure of the lighting apparatus is substantially the same as the shape of the apparatus using the compact fluorescent lamp unit. Superior Lighting | 3530 NW 53rd St Fort Lauderdale, FL 33309 | 1-800-545-7778 G10q (7) Circular fluorescent bulbs are perfect for use in table-top magnifying lamps, table lamps, floor lamps and ceiling fixtures, as well as, some ceiling fans where applicable. [0010] Additionally, according to the present invention, there is provided a lighting apparatus, which uses the above-described circular fluorescent lamp. As shown in FIG. Circular (circline) fluorescent tubes only ... or when an application requires the maximum amount of light. This is due to the effect obtained by narrowing the tube outer diameter of the glass bulb. As similar to a commercially available circular fluorescent lamp unit having a tube outer diameter of 26 mm to 29 mm (for example, FCL15EX-N: see Table 1). Luminous flux (lm) 910 2500. 4. This 22 Watt T9 210mm diameter Circular Fluorescent Tube is an energy efficient lighting solution for a shallow ceiling and wall mounted fixtures in domestic, commercial and retail applications. 1 is a side cross-sectional view showing a lighting apparatus using a compact fluorescent lamp unit as a light source being embedded in a ceiling. Dispose of according to local, state … We take pride in offering brand name quality products at the best possible price. Referring to FIG. [0021] In regard to the lamp light flux and the lamp efficiency of the fluorescent lamp itself at a temperature of 25° C., the lamp light flux=1220 1 m and the lamp efficiency=67.8 1 m/W in this embodiment, whereas the lamp flux=1100 1 m and the lamp efficiency=59.0 1 m/W in the prior art compact fluorescent lamp unit. Moreover, the shapes of the lamps and the attachment dimensions when embedded in a ceiling as the lighting apparatus are compared in this table. As a light source of such a down light unit, a compact fluorescent lamp unit, a krypton lamp unit or an in candescent lamp unit including a light bulb have been conventionally often used. 1) in order to widen the light distribution. Additionally, in the prior art circular fluorescent lamp, the lamp light flux=660 1 m and the lamp efficiency=44.0 1 m/W. [0015] An embodiment according to the present invention will now be described with reference to the accompanying drawings. Part Number: TUV21T5/4P. The lighting apparatus 30 is constituted by a portion with a U-shaped cross section consisting of a bottom portion 34 to which a non-illustrated socket which bears the cap 23 of the lamp unit is provided and a portion 35 for accommodating the lamp unit therein, and a conical trapezoidal light reflector 33 which downwardly opens from the lamp accommodation portion 35 toward a ceiling surface 100, and a lamp lighting circuit 31 is provided to the outside of the bottom portion 34. A lighting apparatus comprising said circular fluorescent lamp unit according to claim 1. Halophosphate tubes Numeric color code Color Approximate CRI Color temperature (K) 29
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