WO2011157086A1 - Tube-in-tube illuminating lamp adopting cold cathode tube - Google Patents

Abstract

A tube-in-tube illuminating lamp adopting cold cathode tube (6) is provided, wherein a reflective plate (4) is arranged inside an outer tube (1); the cold cathode tube (6) is positioned on the working side of the reflective plate (4) by a tube clamp (2); an inverter (5) is arranged on the other side of the reflective plate (4) and is electrically connected to the output end of the cold cathode tube (6); and electrodes at the input end of the inverter (5) are guided to the two ends of the outer tube (1) through a lamp cap (3). The outer tube (1) adopts T5/T8 type.

Description

 Tube-in-tube lighting with cold cathode lamp Technical field

 The present invention relates to an illumination lamp, and more particularly to a tube-in-tube illumination lamp using a cold cathode lamp.

Background technique

 Other fluorescent lamps such as T 5/T8, as a decorative backlight and grille illumination, have large power consumption, short life, and fast light decay. 3000H attenuation 50%, low resistance to switching, about 10 10,000 times and other shortcomings, long-term lighting, switching times will lead to early aging of the lamp, need to be replaced frequently, high maintenance costs, and the life of the rectifier is not high, the ballast and the lamp should be installed separately, not saving space.

Summary of the invention

 The technical problem to be solved by the present invention is to provide a The tube-in-tube illumination lamp using the cold cathode lamp has the advantages of long life, good illumination, energy saving and environmental protection, and low maintenance cost.

 In order to solve the above technical problems, the technical solution adopted by the present invention is: A tube-in-tube illumination lamp using a cold cathode lamp tube, wherein the outer tube is provided with a reflector, the cold cathode tube is mounted on the working side of the reflector through the tube card, and the inverter is mounted on the other side of the reflector. The device is electrically connected to the output end of the cold cathode lamp tube, and the input end electrode of the inverter is led out through the lamp cap to both ends of the outer tube. The outer tube is adopted T5/T8 specifications.

 The cold cathode lamp tube is U-shaped or straight-tube type and has a length of 500-1200 mm.

 The cold cathode lamp has a diameter of 3.0 to 8.0 mm.

 The inverter control circuit adopts an intelligent IC half bridge driving chip.

 The connection between the inverter and the cold cathode lamp is a double-ended reverse high voltage drive.

BRIEF abstract

 Figure 1 is a front view of the present invention.

 Figure 2 is a cross-sectional view taken along line A-A of Figure 1. Figure 2 also serves as an abstract drawing.

Implementation

 A tube-in-tube illumination lamp using a cold cathode lamp tube, the outer tube 1 is provided with a reflector 4, and the cold cathode lamp tube 6 is mounted on the reflector by a tube card 2 On the working side of 4, the inverter 5 is mounted on the other side of the reflector 4, and the inverter 5 is electrically connected to the output end of the cold cathode lamp 6, and the input electrode of the inverter 5 is led out to the outer tube through the lamp cap 3. 1 Both ends. The outer tube is of the T5/T8 specification. This makes it possible to use the existing lamp holders of the T5/T8 size.

 The cold cathode lamp tube 6 is U-shaped or straight-tube type and has a length of 500-1200 mm.

 The cold cathode lamp tube 6 has a diameter of 3.0 to 8.0 mm.

 The inverter 5 control circuit adopts an intelligent IC half-bridge driving chip. For example, model number: FAN7711.

 The connection between the inverter 5 and the cold cathode lamp 6 is double-ended reverse high voltage driving.

 Compared with the T5/T8 fluorescent lamp test, the U-shaped cold cathode tube middle tube illumination lamp of the present invention takes the 550 mm long tube middle tube as an example, and the advantages are as follows:

 1) A T5/T8 fluorescent lamp consumes between 20-30W, and the tube-in-tube illumination lamp with cold cathode lamp consumes 14-16W;

 2) A T5/T8 fluorescent light flux is 1100~1300lm, and the lumen of the tube-in-tube illumination lamp with cold cathode lamp is 1000~1100lm, and the luminous flux is 50% higher than the same input power.

 3) T5/T8 The average life of the fluorescent tube wall is 6000 hours, the efficiency of the electronic rectifier is 85%, the service life of the tube-in-tube illumination lamp using the cold cathode lamp is more than 50,000 hours, and the efficiency of the inverter 5 is over 90%, which is more energy-saving and environmentally friendly.

 4) T5/T8 The fluorescent lamp needs an external electronic rectifier, and the tube-in-tube illumination lamp adopting the cold cathode lamp tube adopts an integrated type, and the cold cathode lamp tube 6 and the lamp tube driving inverter 5 are combined in the outer tube 1 to reduce the occupation of the three-dimensional space, and the outer tube 1 Adopt T5/T8 specifications. Therefore, the existing T5/T8 matching lamp holder can be utilized, which is easy to install and has good light directivity, and is very suitable for use as an advertising light box and a signboard backlight.

The above description of one embodiment of the present invention is intended to facilitate the understanding and understanding of the present invention, and various modifications and improvements can be made by those skilled in the art without departing from the scope of the appended claims. For example, changing the shape of the tube to a straight tube type, changing the size of the tube, and the like. However, such changes and modifications are within the scope of the invention.

Industrial applicability

 Compared with the prior art, the present invention provides a tube-in-tube illumination lamp using a cold cathode lamp. Due to the use of cold cathode lamps, the service life can reach more than 50,000 hours, which is 5 times longer than that of T5 lamps. The color rendering index can reach 85-90 Ra, the color rendering is good, and the maintenance cost of lamps is low. The mercury content in the cold cathode lamp can be precisely controlled. The mercury content of a single lamp is less than 3.5mg, which is 40% of the mercury content of the T5 lamp. It meets the environmental protection requirements of the European Union; the cold cathode lamp is used in conjunction with the high efficiency inverter. Driven by high current, the whole lamp has automatic optimization of lamp parameters, with high photoelectric conversion efficiency, light efficiency above the first-level energy efficiency (>69Lm/w), and the energy conversion efficiency is greater than 90%, which is higher than the efficiency of the electronic rectifier. %~10%. The drive frequency of the inverter is not less than 45 KHz to no more than 55 KHz, drive current not less than 5 mA, output power not less than 15W. The whole lamp can automatically detect the abnormal state of the lamp, activate the protection function, and turn off the output circuit, which is safe and reliable.

 One type provided by the present invention The tube-in-tube illumination lamp with cold cathode lamp tube is compact in structure, and the cold cathode lamp tube, the inverter and the reflector are integrated in the outer tube, and the whole device can be operated by being connected to the mains, and the existing T5 can be fully utilized. /T8 The specification lamp holder is connected and installed. Moreover, it has long service life, low maintenance cost and good light directivity, and is very suitable for use as an advertising light box and a signboard backlight.

Claims (6)

1. A tube-in-tube illumination lamp using a cold cathode lamp, characterized in that: an outer tube (1) is provided with a reflector (4), and a cold cathode tube (6) ) is installed on the working side of the reflector (4) through the pipe clamp (2), and the inverter (5) is mounted on the other side of the reflector (4), the inverter (5) is electrically connected to the output end of the cold cathode lamp (6), and the input end electrode of the inverter (5) is led out to the ends of the outer tube (1) through the lamp cap (3).
2. A tube-in-tube tube illumination lamp using a cold cathode lamp according to claim 1, wherein said outer tube (1) is T5/T8 specifications.
3. A tube-in-tube illumination lamp using a cold cathode lamp according to claim 1, wherein the cold cathode lamp tube (6) is U-shaped or straight-tube type and has a length of 500-1200 mm.
4. A tube-in-tube tube illumination lamp using a cold cathode lamp according to claim 1, wherein: said cold cathode lamp tube (6) The diameter is 3.0-8.0mm.
5. A tube-in-tube tube illumination lamp using a cold cathode lamp according to claim 1, wherein said inverter (5) controls electricity The road uses a smart IC half-bridge driver chip.
6. A tube-in-tube illumination lamp using a cold cathode lamp according to claim 1, wherein the connection between the inverter (5) and the cold cathode lamp (6) is double-ended High voltage drive.

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