CN102798051A - LED (light-emitting diode) high-voltage constant-current non-watertight backlight source for advertising lamp house - Google Patents
LED (light-emitting diode) high-voltage constant-current non-watertight backlight source for advertising lamp house Download PDFInfo
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- CN102798051A CN102798051A CN2012102925597A CN201210292559A CN102798051A CN 102798051 A CN102798051 A CN 102798051A CN 2012102925597 A CN2012102925597 A CN 2012102925597A CN 201210292559 A CN201210292559 A CN 201210292559A CN 102798051 A CN102798051 A CN 102798051A
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Abstract
The invention relates to an LED (light-emitting diode) backlight technology for a novel advertising logo lamp house and provides an LED (light-emitting diode) high-voltage constant-current non-watertight backlight source for an advertising lamp house. The LED (light-emitting diode) high-voltage constant-current non-watertight backlight source for the advertising lamp house comprises an LED circuit board, and a clip for fixing the LED circuit board and having a rightward horizontal U-shaped groove structure, wherein the circuit board is powered by 48V high voltage and driven by constant current; a power cord is led out of the clip; and the power cord is connected with positive and negative electrodes of the circuit board. The 48V power is used for the first time in the industry with the LED as a lamp house backlight source, the voltage is high and the current is low; due to adoption of a constant-current driving technology, the LED high-voltage constant-current non-watertight backlight source for the advertising lamp house is high in constant-current precision, small in LED light attenuation, long in service life, few in peripheral elements of a chip, low in cost and high in attenuation resistance, and is particularly applicable to remote power supply, and has the maximum voltage attenuation of 9V, with unchanged brightness; and two constant-current chips LC1912 which are imported with original packaging are adopted in the circuit and work independently to realize double insurance, thus fundamentally solving the problem of difficulty in maintaining the LED backlight source lamp house.
Description
Technical field
The present invention relates to a kind of advertisement and identifier lamp box LED-backlit technology, provide a kind of LED high voltage and constant current non-watertight advertising lamp box backlight.
Background technology
At present, what the used lamp box backlight of advertisement and identifier industry mainly adopted is the technical scheme of not constant current of low pressure, and there is following problem in it:
The LED driving voltage is low, and because of there being problem of pressure drop, the fed distance of LED power supply is shorter; So the LED power supply must be installed near the LED module; Just make the LED power supply just often be operated under the open-air situation, this just requires the LED power supply must possess the sun-proof ability of excellent waterproof, and LED power supply cost raises.
What circuit adopted is the technology of not constant current, and the decay of voltage causes the LED electric current different, and front and back brightness is difficult to consistent.
Voltage is low, and electric current is just high, and decay is just big, so just need connect more power line, trouble is installed.
In a word, there is following shortcoming in this scheme: power supply distance is short, and electric current is high; Voltage antidamping ability, connection line is many, and installation cost is high; Front and back brightness is difficult consistent, and reliability is lower, and spoilage is higher; Especially maintenance is very difficult, and the invention of LED high voltage and constant current advertising lamp box backlight has well solved above problem.
Summary of the invention
The object of the present invention is to provide the non-watertight advertising lamp box backlight of a kind of LED high voltage and constant current.
The present invention adopts following technical scheme to achieve these goals:
The non-watertight advertising lamp box backlight of a kind of LED high voltage and constant current is characterized in that: the LED wiring board, be used for fixing the LED wiring board " clamp of [" type groove structure leads to power line in the said clamp, and said power line is connected with the both positive and negative polarity of wiring board.
In the such scheme, said led circuit plate has adopted high pressure 48V power supply when designing.
In the such scheme, it is that LED provides driving that said led circuit plate has adopted two LC1912 constant current chips, unique dual fail-safe circuit design.
In the such scheme, the inside grooves of said clamp is provided with the small column of a convexity that is used for positioning with wiring board.
In the such scheme, be provided for the installing hole that is fixed on the lamp box rectangular on the described clamp.
In the such scheme, also comprise screw, said power line is connected through screw with the both positive and negative polarity of wiring board.
The present invention has following beneficial effect:
One, the present invention adopts high pressure 48V power supply, and electric current reduces by 75% with respect to the 12V power voltage supply, and voltage decay on the line is corresponding to reduce by 75% thereby make;
Two, the present invention has adopted constant-current drive technology, and constant current accuracy makes lamp box surface brightness uniformity up to 2%;
Three, the present invention adopts constant-current drive technology, and the circuital current fluctuation is little, so the LED longer service life, light decay is littler;
Four, the present invention adopts LC1912 constant current chip, and the chip periphery components and parts are few, and cost is low;
Five, antidamping ability of the present invention is strong, especially is fit to remote power-feeding, and voltage attenuation reaches as high as 9V, and brightness is constant;
Six, the present invention has adopted two LC1912 constant current chips to form unique dual fail-safe circuit design, and work independently of one another is independent of each other, and reliability is high, greatly reduces the product maintenance rate;
Seven, distance is fixing between set of hanging scrolls of the present invention, and the shipment of whole screen is easy for installation, quick;
Eight, the present invention has energy-saving and environmental protection, brightness is high, replaces traditional fluorescent lamp.
Description of drawings
Fig. 1 is overall structure figure of the present invention;
Fig. 2 is circuit theory diagrams of the present invention;
1-LED circuit board, 2-clamp, 3-power line, 4-screw among the figure, 5-LED constant current chip.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further explanation:
The non-watertight advertising lamp box backlight of this a kind of LED high voltage and constant current is as shown in Figure 1, comprises the LED wiring board; Said LED wiring board adopts high pressure 48V power supply; And form unique dual fail-safe circuit design with two imported with original packaging constant current chip LC1912, be used for fixing the LED wiring board " [" type groove structure clamp, the inside grooves of said clamp are provided with the small column of a convexity that is used for positioning with wiring board; Two small sircle holes are arranged as installing hole on the clamp above the ear; Be used for being fixed on above the lamp box roller shutter type is rectangular, comprise also in clamp leading to power line that said power line is connected through screw with the both positive and negative polarity of wiring board.
The present invention has following characteristics:
One, the present invention in actual use can be according to the requirement of client to brightness, and line length can be customized.
Two, because invention adopts the LED of low energy as light source, make its than the about power consumption of traditional fluorescent lamp tube coupling up to 70%.
Three, unique dual fail-safe loop is designed, and has improved reliability of products greatly.
Four, antidamping ability is strong, especially is fit to remote power-feeding, and voltage attenuation reaches as high as 9V, but brightness is constant.
Five, the quality guarantee time limit: 4 years or 20000 hours.
Six, adopt high pressure, output voltage has only 48V, and human body is belonged to safe voltage.
Claims (6)
1. non-watertight advertising lamp box backlight of LED high voltage and constant current; It is characterized in that: comprise the LED wiring board; Be used for fixing the led circuit plate " clamp of [" type groove structure leads to power line in the said clamp, and said power line is connected with the both positive and negative polarity of circuit board.
2. the non-watertight advertising lamp box backlight of a kind of LED high voltage and constant current according to claim 1, it is characterized in that: said wiring board has adopted the 48V high voltage supply.
3. the non-watertight advertising lamp box backlight of a kind of LED high voltage and constant current according to claim 1 is characterized in that: said wiring board has adopted two LC1912 constant current chips simultaneously LED to be driven.
4. the non-watertight advertising lamp box backlight of a kind of LED high voltage and constant current according to claim 1 is characterized in that: the inside grooves of said clamp is provided with the small column of a convexity that is used for positioning with wiring board.
5. the non-watertight advertising lamp box backlight of a kind of LED high voltage and constant current according to claim 1 is characterized in that: be provided for the installing hole that is fixed on the lamp box rectangular on the described clamp.
6. the non-watertight advertising lamp box backlight of a kind of LED high voltage and constant current according to claim 1 is characterized in that: also comprise screw, said power line is connected through screw with the both positive and negative polarity of wiring board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102925597A CN102798051A (en) | 2012-08-17 | 2012-08-17 | LED (light-emitting diode) high-voltage constant-current non-watertight backlight source for advertising lamp house |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102925597A CN102798051A (en) | 2012-08-17 | 2012-08-17 | LED (light-emitting diode) high-voltage constant-current non-watertight backlight source for advertising lamp house |
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| Publication Number | Publication Date |
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| CN102798051A true CN102798051A (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012102925597A Pending CN102798051A (en) | 2012-08-17 | 2012-08-17 | LED (light-emitting diode) high-voltage constant-current non-watertight backlight source for advertising lamp house |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200999996Y (en) * | 2007-01-24 | 2008-01-02 | 林原 | Lighting lamp strips |
| CN201162995Y (en) * | 2008-02-26 | 2008-12-10 | 李忠训 | LED illumination module group lamp |
| CN101922641A (en) * | 2010-09-26 | 2010-12-22 | 李忠训 | Constant current led module |
| JP2011204845A (en) * | 2010-03-25 | 2011-10-13 | Toshiba Lighting & Technology Corp | Light emitting device |
| CN202733675U (en) * | 2012-08-17 | 2013-02-13 | 李忠训 | Non-waterproof LED high-voltage constant-current backlight source of advertising lamp box |
-
2012
- 2012-08-17 CN CN2012102925597A patent/CN102798051A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200999996Y (en) * | 2007-01-24 | 2008-01-02 | 林原 | Lighting lamp strips |
| CN201162995Y (en) * | 2008-02-26 | 2008-12-10 | 李忠训 | LED illumination module group lamp |
| JP2011204845A (en) * | 2010-03-25 | 2011-10-13 | Toshiba Lighting & Technology Corp | Light emitting device |
| CN101922641A (en) * | 2010-09-26 | 2010-12-22 | 李忠训 | Constant current led module |
| CN202733675U (en) * | 2012-08-17 | 2013-02-13 | 李忠训 | Non-waterproof LED high-voltage constant-current backlight source of advertising lamp box |
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Application publication date: 20121128 |