CN201032079Y - Straight Tube Cold Cathode Fluorescent Lamp - Google Patents

Abstract

A straight tube cold cathode fluorescent lamp comprises at least one cold cathode fluorescent lamp tube, a light-transmitting container, at least one lamp tube fixing device, at least one driver, at least one lamp holder and a base, wherein the input end of the driver is connected with an external power supply, and the output end of the driver is connected with an electrode of the cold cathode fluorescent lamp tube; the transparent container is a tubular transparent container which is formed by a part of metal with high heat conductivity and good heat conduction and dissipation functions and a part of transparent window, wherein the inner surface of the transparent container of the metal part is provided with a light reflecting layer; the cold cathode fluorescent lamp tube is at least one of an n 'U' -shaped lamp tube, an (n +1/2) 'U' -shaped lamp tube, an n 'H' -shaped lamp tube, an (n +1/2) 'H' -shaped lamp tube or a bridged n 'U' -shaped lamp tube (n is an integer more than or equal to 1); and is fixed in the light-transmitting container; the LED lamp tube has the characteristics of good heat dissipation of the lamp tube, high luminous efficiency, high light flux output per unit lamp, high brightness, light and color adjustment and the like.

Description

Straight Tube Cold Cathode Fluorescent Lamp

technical field

The utility model relates to a straight-tube cold-cathode fluorescent lamp, in particular to a straight-tube cold-cathode fluorescent lamp with high brightness, high efficiency, high output luminous flux per unit lamp tube length, long life, adjustable light, adjustable color and color change , can be used to replace the existing hot cathode straight tube fluorescent lamps and energy-saving lamps, etc., used for lighting, dynamic lighting with dimming, color adjustment and color temperature, color-changing lights, landscape lights, billboard lighting, tunnel lighting, building bridge lights, etc.

Background technique

The hot cathode straight tube fluorescent lamps and energy-saving lamps in the prior art have the advantages of high luminous efficiency and large output luminous flux, and have been widely used in lighting in offices, homes, offices, tunnels and other occasions. But its service life is short, generally several thousand hours to ten thousand hours; at the same time, every time it is switched on and off, its service life will be shortened by about 1 hour, so in some occasions that need to be switched frequently, its service life is shorter; in addition , the output luminous flux per unit lamp tube length of the existing hot cathode straight tube fluorescent lamp is small, the lamp tube of the hot cathode straight tube fluorescent lamp with high power and high luminous flux is huge and heavy, the lamp tube is very long and the tube diameter is very large, for example, a 125W thermal Cathode straight tube fluorescent lamp, the length of the tube is 2.37 meters, the diameter of the tube is 41mm, and its luminous efficiency is not high. W; it is also difficult to dim, adjust temperature or change color.

Due to the advantages of long life, easy dimming, flicker resistance, and small size, cold cathode fluorescent lamps have been widely used in liquid crystal display backlighting. However, the power of the lamp is small, and the total luminous flux of a single lamp is small; if a straight tube fluorescent lamp is made by combining multiple short straight tubes in an outer glass tube, there will be a small length of each cold cathode fluorescent lamp tube and multiple lamps. The number of tube electrodes is large, the electrode power consumption is large, and the luminous efficiency is low. At the same time, many short straight tubes are sealed in a sealed tube. When the power is high, the temperature of the lamp tube is easy to be too high, especially at the lamp tube electrode. And make its luminous efficiency and life-span decline; Therefore can't make power be 36W, 100W, 125W or higher power at present, can replace existing hot cathode fluorescent lamp, high power, high luminous flux, high efficiency, long life, High power straight tube cold cathode fluorescent lamp. On the other hand, in order to increase the brightness, luminous efficiency and load power per unit length of the lamp tube, it is the key to improve the heat dissipation condition of the lamp tube and reduce the thermal resistance of the lamp tube. The outer tube of the existing straight tube cold cathode fluorescent lamp is made of glass or plastic tube. Its thermal conductivity is poor, the thermal conductivity of glass is only about 0.7W/(mK) (the unit of thermal conductivity below is the same), plastic: ~0.04, it is a heat insulating material, and the temperature of the cold cathode fluorescent lamp installed in it is easy to be too high As a result, the luminous efficiency decreases, so it is difficult to make a high-power straight-tube cold-cathode fluorescent lamp with high brightness, high luminous efficiency, high output luminous flux per unit lamp tube length, and long life.

Contents of the invention

The purpose of this utility model is to overcome the above-mentioned shortcomings, and provide a new high-power straight-tube cold-cathode fluorescent lamp with high luminous efficiency, high brightness, high output luminous flux per unit tube length, long life, adjustable light and color adjustment.

The purpose of this utility model is accomplished through the following technical solutions, which includes at least one cold cathode fluorescent tube, a light-transmitting container, at least one fixing device for the lamp tube, at least one driver, at least one lamp cap, a base, and a driver The input end is connected to the external power supply, and the output end is connected to the electrode of the cold cathode fluorescent lamp; the light-transmitting container is made of a metal with high thermal conductivity, good heat conduction and heat dissipation function, and a part of a light-transmitting window. The tubular light-transmitting container, wherein the inner surface of the metal part of the light-transmitting container has a light reflection layer; the cold cathode fluorescent tube is n "U" type, (n+1/2) "U" type, n "H" type , (n+1/2) "H" type, or at least one of bridged n "U" type lamp tubes (n is an integer ≥ 1); and be fixed in the light-transmitting container.

The cold cathode fluorescent tube, the light-transmitting container, the fixing device of the lamp tube and the lamp cap are connected to each other to form a lamp tube, the lamp cap has an electric connector, and the lamp tube is fixed on the base through a bracket.

The cold cathode fluorescent lamp tube, the light-transmitting container, the lamp tube fixing device and the lamp cap are directly fixed on the base.

The straight cold-cathode fluorescent lamp can also be integrated with the base, that is, the fixing devices at both ends of the lamp tube are directly connected to the base without an electrical connector between the lamp tube and the base.

For the longer straight cold cathode fluorescent lamp, there may be at least one fixing device for the cold cathode fluorescent lamp in the middle to enhance its mechanical strength.

The fixing device at both ends of the light-transmitting container, the lamp head and the light-transmitting container are integrated, and the light-transmitting container can also be made into a structure in which part of the light-transmitting container can be rotated to adjust the direction of light emission.

The light-transmitting container and the lamp head are fixed to each other, or the light-transmitting container is rotatably connected to the lamp head with a structure for adjusting the light emission direction; at least one straight cold cathode fluorescent lamp is installed on the one base.

The metal part of the light-transmitting container has heat dissipation and light reflection devices such as heat dissipation fins and reflectors.

The electrode of the cold cathode fluorescent lamp is one of the electrodes of the existing cold cathode fluorescent lamp or neon lamp, and the tube diameter of the lamp tube in the electrode part is equal to or larger than that of the light emitting part.

The at least one cold-cathode fluorescent tube has the same luminous color or different luminous colors; when the luminous colors are different, at least one of the at least one cold-cathode fluorescent tube is low color temperature, and at least one is blue Green, or at least one with low color temperature and at least one with high color temperature, or at least one with red, blue and green primary colors or multi-primary colors, just change the relative light intensity of different luminescent color tubes Output light of various luminescent colors is obtained.

The driver includes a drive circuit with a lamp tube and its casing, and the drive circuit at least includes a circuit for adjusting light brightness, color adjustment or color change, a protection circuit, and an infrared or radio frequency remote control circuit; The circuit is a dimmer with an external thyristor to adjust the conduction angle of the input alternating current; the driver is installed in the base or outside the base, that is, installed separately, or part of it can be installed in or outside the base, and the other part can be installed in the base or outside the base. , such as a high-voltage transformer, installed in the lamp cap of at least one end of the straight cold cathode fluorescent lamp.

The light-transmitting window is a light-transmitting and ventilating window, or there is a light-transmitting and ventilating grille plate on it, or a flat or curved light-transmitting plate, and the light-transmitting plate is transparent, diffuse, and colored , an optical device having a series of small lenses or prisms made of glass or plastic on its inner or outer surface,

The fixing device includes a fixing device for fixing the lamp tube on the lamp cap and a fixing device for fixing at least one cold cathode fluorescent tube to each other. The fixing device is a combination of at least one section of glass tube or column and glue, and the glue It is at least one of epoxy resin glue, silica gel, and ultraviolet curing glue.

The lamp holder is made of metal, plastic or pottery.

Compared with the hot cathode straight tube fluorescent lamp in the prior art, the utility model has the advantages of good heat dissipation of the lamp tube, high brightness, higher output luminous flux per unit lamp length, small size of the lamp tube, long working life, adjustable light and adjustable light color. , Adjustable color temperature, variable color, can be switched at will without affecting the service life and so on.

Description of drawings:

Fig. 1 is a structural schematic diagram of an embodiment of the utility model.

Fig. 2 is a schematic cross-sectional structure diagram of Fig. 1A-A.

Fig. 3 is another schematic cross-sectional structure diagram of Fig. 1A-A.

Fig. 4 is a schematic structural diagram of another embodiment of the present invention.

Fig. 5 is a schematic structural diagram of another embodiment of the present invention.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings.

The labels shown in Fig. 1-Fig. 5 are:

1—Cold cathode fluorescent lamp 2—Tube light-transmitting container 2a—Metal part of light-transmitting container

2b—The light-transmitting part of the light-transmitting container 3—The fixing device of the lamp tube 3a—The fixing device of the lamp tube and the lamp cap

3b—The fixing device of the lamp tube in the light-transmitting container 4—The driver 4a—A part of the driver

4b—High voltage transformer 5—Lamp holder 6—Electrical connector 7—Base 8—Light reflection layer

9—fixing bracket                                                                                                                                                                                              

14—connecting wire 15—connecting wire 16—fixed suspension device for the whole lamp 17—glass tube at the electrode

18—radiating reflector 19—lamp holder 20—power supply 21—fixing device

22—Potentiometer 23—Dimmer 24—Connecting wire 101—Straight cold cathode fluorescent lamp

As shown in Fig. 1, the utility model includes at least one cold cathode fluorescent lamp tube 1, a tubular light-transmitting container 2, at least one fixing device 3 for the cold cathode fluorescent lamp tube, at least one driver 4, at least one lamp cap 5, at least one electrical Connector 6, a base 7; A part of described tubular light-transmitting container 2 is metal 2a with good heat conduction and heat dissipation function of high thermal conductivity, such as aluminum (thermal conductivity is 236), aluminum alloy (thermal conductivity is 107-169), copper (thermal conductivity is 398), nickel-plated iron (thermal conductivity of pure iron is 81, nickel thermal conductivity is 91), stainless steel (thermal conductivity is 16), silver (thermal conductivity is 427 ), etc., a part is a light-transmitting window 2b, and the inner surface of the metal part has a light reflection layer 8; the metal part of the light-transmitting container has good heat conduction and heat dissipation, and can be made into a light-transmitting window with high brightness, high luminous efficiency, and high unit length of the lamp tube. Output luminous flux, long-life high-power straight-tube cold-cathode fluorescent lamp. The cold cathode fluorescent lamp tube 1, the light-transmitting container 2, the lamp tube fixing device 3, the lamp cap 5 and the electrical connector 6 are connected to each other to form a lamp tube 101, and the lamp tube 101 is fixed on the lamp fixing bracket 9 at two ends of the base on base 7. A part 4a of the driver 4 is installed in the base 7, and another part 4b, such as a high-voltage transformer, is installed in the lamp cap 5 of the lamp tube 101; the input of the driver 4 is connected to the electrical connector 11 through the lead wire 10 to connect to the external power source, the lead wire 10 can also include another neutral line or ground line, the output of which is connected to the electrode 13 of the cold cathode fluorescent lamp 1 through the lead line 12, and there are connecting lines 14, 15 and electrical connections between the two parts 4a and 4b of the driver. The controllers 6 are connected to each other, and the cold cathode fluorescent lamp 1 can be lighted by connecting the external power supply and the output voltage of the driver.

The light-transmitting window 2b is a light-transmitting, ventilating window, or there is a light-transmitting, ventilating grille plate on it, or a flat or curved light-transmitting plate is arranged, and Fig. 1 shows a curved light-transmitting plate As an example, the light-transmitting plate is a transparent, diffuse, colored optical device with a series of small lenses or small prisms on its inner or outer surface, made of glass or plastic.

The light-transmitting container 2 and the lamp head 5 can be fixed to each other, and can also be rotated to adjust the direction of output light.

The fixing device 3 at the two ends of the tubular light-transmitting container 2 includes a fixing device 3a for fixing the lamp tube 1 on the lamp cap 5 and a fixing device 3b for fixing each lamp tube of the at least one CCFL tube 1 to each other .

The lamp holder 5 is made of metal, plastic or ceramics.

The base 7 has a fixing device 16 for fixing or hanging the whole lamp. One or more straight CCFL tubes 101 can be installed on one base 7 .

The at least one CCFL tube 1 is n "U" type or bridging n "U" type tube (n is an integer ≥ 1), made of soft glass, hard glass or quartz glass, the two tubes The ends are vacuum-sealed and each has at least one electrode 13. The lamp tube is filled with discharge gas, such as argon, neon, mercury, xenon, krypton, helium, etc. There is a photoluminescent powder layer on the inner wall of the lamp tube, which can discharge the gas to generate UV light is converted into visible light of the desired color.

The tube diameter of the lamp tube 18 of the electrode part of the at least one cold cathode fluorescent lamp tube 1 is equal to or greater than the tube diameter of the light emitting part; the electrode 13 is one of the electrodes of the existing cold cathode fluorescent lamp or neon lamp; The electrode has a sufficient area to ensure sufficient current and good heat dissipation, so as to ensure that the electrode works within the normal glow discharge range.

The at least one CCFL tube 1 can be of the same luminous color or different luminous colors; when the at least one CCFL tube 1 has different luminescent colors, at least one CCFL tube can be of low color temperature , the other at least one is blue color, or at least one is low color temperature, the other at least one is high color temperature, or at least one red, blue three primary colors or multiple primary colors, change different luminescent colors The relative light intensity of the lamp tube can obtain the output light of various luminous colors required.

The driver 4 includes a lamp tube driving circuit and its casing, and the driver 4 can convert the input direct current or alternating current into high voltage and high frequency power suitable for the cold cathode fluorescent lamp. The circuit may also include a circuit for adjusting light brightness, color adjustment or color change, protection circuit, infrared or radio frequency remote control circuit, etc. as required.

The electrical connector 6 is one of the electrical connectors of the lamp holder of the existing hot cathode straight tube fluorescent lamp.

Referring to Fig. 2, the fixing device 3b of the cold cathode fluorescent lamp shown in the figure is at least one section of glass tube or column 3b1 and glue 3b2, and the glue is at least one of epoxy glue, silica gel, and ultraviolet curing glue. The meanings represented by other numbers in Fig. 2 are the same as those in Fig. 1 .

Referring to FIG. 3 , the metal part 2 a of the light-transmitting container in the figure has heat dissipation and light reflection devices 18 , such as heat dissipation fins and reflectors. The meanings represented by other numbers in Fig. 3 are the same as those in Fig. 2 .

As shown in Fig. 4, the lamp holder 19 at two ends of the straight tube cold cathode fluorescent lamp described in the utility model is directly fixed on the base 7, and the lamp holder 19 is made of metal or plastic; 20 is an external power supply, which is an AC or DC power supply; To enhance the mechanical strength of the lamp, there is at least one fixing device 21 in the middle of the lamp tube. The meanings represented by other numbers in Fig. 4 are the same as those in Fig. 1 .

As shown in Fig. 5, at least one CCFL described in the utility model is at least one (n+1/2) "U" type lamp (n is an integer > 1); There is a dimmer 23 for adjusting the brightness of the lamp with a potentiometer 22. The brightness of the lamp can be continuously adjusted with the dimmer 23. When the input power is alternating current, the dimmer can be a silicon controlled rectifier to adjust the conduction angle of the input alternating current. Dimmer; there is at least one connection line 24 between the high-voltage transformer 4b at the two ends of the lamp tube or between the high-voltage transformer 4b and the electrode 13 . The meanings represented by other numbers in FIG. 5 are the same as those in FIG. 4 .

A part of the transparent container of the straight tube cold cathode fluorescent lamp of the utility model is made of metal with high thermal conductivity, and the cold cathode fluorescent lamp is at least one n "U" type or (n+1/2) "U" type lamp tube , long length of lamp tube, good heat dissipation, high luminous efficiency, high output luminous flux per unit lamp length, high brightness, long working life, and adjustable light, adjustable color, adjustable color temperature, variable color, can be switched on and off at will Does not affect the service life and other advantages.

In a specific embodiment of the present utility model, the inner tube of the light is called a cold cathode fluorescent lamp; and the cold cathode fluorescent lamp + shape tube light-transmitting container is called a straight tube cold cathode fluorescent lamp; the whole lamp is called a cold cathode fluorescent lamp. Straight tube cold cathode fluorescent lamps.

The protection scope of the utility model is not limited to each embodiment described herein, and the specialized technology involved is familiar to the general personnel of this profession, so as long as understand the content and characteristic of the utility model, can do various forms of conversion and substitution Change.

Claims (10)

1. straight-tube cold cathode fluorescent lamp, it includes at least one cathode fluorescent tube, a light transmission container, the fixture of at least one fluorescent tube, at least one driver, at least one lamp holder, a base, the input of driver links to each other with external power, and its output links to each other with the electrode of described cathode fluorescent tube; It is characterized in that described light transmission container (2) is the tubulose light transmission container that a metal (2a) high heat conductance, that good heat conductive and heat sinking function are arranged and a part constitute for optical transmission window (2b) for a part, wherein the light transmission container inner surface of metal part has reflection layer (8); Described cathode fluorescent tube (1) is at least a in n " U " the type fluorescent tube (n for 〉=1 integer) of n " U " type, (n+1/2) " U " type, n " H " type, (n+1/2) " H " type or bridge joint; And be fixed in the described light transmission container (2).

2. straight-tube cold cathode fluorescent lamp according to claim 1, it is characterized in that described cathode fluorescent tube (1), light transmission container (2), fixture of fluorescent tube (3) and lamp holder (5) are interconnected to a tubes (101), electric connector (6) is arranged on the lamp holder (5), and described fluorescent tube (101) is fixed on the base (7) through support (9).

3. straight-tube cold cathode fluorescent lamp according to claim 1 is characterized in that described cathode fluorescent tube (1), light transmission container (2), and fixture of fluorescent tube (3) and lamp holder (19) directly are fixed on the base (7).

4. according to claim 1 or 2 or 3 described straight-tube cold cathode fluorescent lamps, it is characterized in that described light transmission container (2) and lamp holder (5,19) interfix, or light transmission container (2) is rotatably connected on lamp holder (5,19) with the structure of regulating the light exit direction; A straight-tube cold cathode fluorescent lamp pipe is installed on the described base (7) at least.

5. straight-tube cold cathode fluorescent lamp according to claim 1 is characterized in that the metal part (2a) of described light transmission container (2) has heat radiation and the reverberation device (18) that is made of radiating fin or reflection shield.

6. straight-tube cold cathode fluorescent lamp according to claim 1, a kind of in existing cold-cathode fluorescence lamp or the neon tube electrode of the electrode (13) that it is characterized in that described cathode fluorescent tube (1), the caliber of the fluorescent tube (17) of electrode part is equal to or greater than the fluorescent tube caliber of luminous component.

7. straight-tube cold cathode fluorescent lamp according to claim 1, it is characterized in that described driver (4) includes the drive circuit and the shell thereof of fluorescent tube, described drive circuit includes at least transfers lamplight brightness, toning or variable color circuit, holding circuit, infrared or RF remote-controlled circuit; Described accent lamplight brightness, toning or variable color circuit are the light modulator that external controllable silicon is transferred the angle of flow of input AC electricity; Described driver (4) is installed in the base (7) or is outer, or a part (4a) is installed in the base (7), and another part (4b) is installed in the lamp holder (5,19).

8. straight-tube cold cathode fluorescent lamp according to claim 1, it is characterized in that described optical transmission window (2b) is the window of a printing opacity, ventilation, or printing opacity, air grid plate arranged on it, or light-passing board flat or curved surface arranged, described light-passing board is transparent, diffusion, painted, and a series of lenslets of being made by glass or plastics or the Optical devices of little prism are arranged in it or on the outer surface.

9. straight-tube cold cathode fluorescent lamp according to claim 1, it is characterized in that described fixture (3), include a fluorescent tube (1) and be fixed on the fixture (3b) that fixture (3a) on the lamp holder (5,19) and cathode fluorescent tube (1) interfix, fixture (3b) is the combination of at least one section glass tube or post (3b1) and glue (3b2), and described glue is at least a in epoxide-resin glue, silica gel, the ultra-violet curing glue.

10. according to claim 1 or 9 described straight-tube cold cathode fluorescent lamps, it is characterized in that described lamp holder (5,19) made by metal, plastics or pottery.

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