CN213843377U - LCD lighting fixture - Google Patents
LCD lighting fixture Download PDFInfo
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- CN213843377U CN213843377U CN202022335187.4U CN202022335187U CN213843377U CN 213843377 U CN213843377 U CN 213843377U CN 202022335187 U CN202022335187 U CN 202022335187U CN 213843377 U CN213843377 U CN 213843377U
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- mcu module
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Abstract
The invention relates to an LCD lighting fixture, which comprises a current detection circuit, an LCD module, an MCU module, a picture generator and a buzzer, wherein the current detection circuit transmits an LCD current detection signal in a lighting state to the MCU module, the MCU module transmits a signal obtained by comparing a detection current received in real time with a preset current value to the picture generator and the buzzer, and the picture generator transmits an abnormal picture signal to the LCD module, and belongs to the technical field of flat panel display. The purpose is to avoid going out the defective products to the customer end, has improved the quality of product, reduces the potential safety hazard.
Description
Technical Field
The present invention relates to a lighting fixture, and more particularly to a lighting fixture for an LCD.
Background
The liquid crystal display screen has more and more extensive application, various industries have started to popularize and apply, and the application field of the liquid crystal display screen is that the liquid crystal display screen is lighter and more convenient than a CRT. The trend in the industry is to optimize the display effect of liquid crystal display panels from various aspects. The LCD is subjected to a lighting test before leaving a factory, and whether the product is qualified is checked.
At present, lighting test equipment on a production line can only detect the display effect and cannot detect whether the current is qualified in a foolproof manner. Because the short circuit or EOS problem appear in LCD internal circuit, often lead to the picture effect when lighting a lamp and testing to seem good, but the reality has suffered to destroy, has the heavy current problem, makes the product have very big quality hidden danger and potential safety hazard.
Disclosure of Invention
The invention aims to solve the problem that the existing lighting test equipment cannot perform fool-proof detection to detect whether the current is qualified or not, so that the product has great quality hidden danger and potential safety hazard. Thus, a lighting fixture for LCD is provided.
The utility model provides a LCD tool of lighting a lamp, the tool include current detection circuit, LCD module, MCU module, picture generator and bee calling organ, current detection circuit LCD current detection signal transmission to MCU module under the state of lighting a lamp, the MCU module is with signal transmission to picture generator and bee calling organ after real-time received detection current compares with the current value of presetting, the picture generator is with unusual picture signal transmission to LCD module.
The beneficial effect of adopting above-mentioned technical scheme is: in this scheme of adoption the test fixture of lighting a lamp, if the electric current exceeds standard can automatic alarm when lighting a lamp and testing, show that the electric current exceeds standard and have warning buzzing on the display screen, the unusual product of electric current is intercepted, avoids going out the defective products to the customer end, has improved the quality of product, reduces the potential safety hazard.
Drawings
FIG. 1 is a schematic view of a lighting fixture with an alarm function for automatically checking LCD current;
FIG. 2 is a current detection circuit;
FIG. 3 is a circuit for detecting the voltage received by the MCU;
FIG. 4 is a diagram of the connection of the MCU with the buzzer and the picture generator;
figure 5 is a buzzer circuit.
Detailed Description
The invention will be further described with reference to the accompanying drawings and preferred embodiments thereof. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention.
As shown in fig. 1 to 5, the LCD lighting fixture in the present solution includes a current detection circuit, an LCD module, an MCU module, a picture generator, and a buzzer, wherein the current detection circuit transmits an LCD current detection signal to the MCU module in a lighting state, the MCU module transmits a signal obtained by comparing a detection current received in real time with a preset current value to the picture generator and the buzzer, and the picture generator transmits an abnormal picture signal to the LCD module.
During specific implementation, the current detection circuit detects current of the LCD module which is being lighted, the current detection circuit feeds detection results back to the MCU module, and the MCU module compares the current detected in real time with a preset current value. And if the comparison detection current result of the MCU module is within the preset value range, normal lighting test of the picture generator and the buzzer is not interfered. And if the comparison result of the MCU module and the detection current exceeds the preset value range, a buzzer switch is turned on to give an alarm to the buzzer, and meanwhile, the picture generator is informed of the picture with abnormal current. When the picture generator outputs current abnormal picture information to the LCD module, the LCD module can display the current abnormal picture, the lighting test is stopped, and the tester stops the LCD with the current exceeding the standard and transfers the LCD to the engineer for analysis. Therefore, defective products can be prevented from leaving the factory, the quality of the products is improved, and potential safety hazards are reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (1)
1. The utility model provides a LCD tool of lighting a lamp which characterized in that: the jig comprises a current detection circuit, an LCD module, an MCU module, a picture generator and a buzzer, wherein the current detection circuit transmits an LCD current detection signal to the MCU module in a lighting state, the MCU module transmits a signal obtained by comparing a detection current received in real time with a preset current value to the picture generator and the buzzer, and the picture generator transmits an abnormal picture signal to the LCD module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022335187.4U CN213843377U (en) | 2020-10-20 | 2020-10-20 | LCD lighting fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022335187.4U CN213843377U (en) | 2020-10-20 | 2020-10-20 | LCD lighting fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213843377U true CN213843377U (en) | 2021-07-30 |
Family
ID=77009580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022335187.4U Active CN213843377U (en) | 2020-10-20 | 2020-10-20 | LCD lighting fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213843377U (en) |
-
2020
- 2020-10-20 CN CN202022335187.4U patent/CN213843377U/en active Active
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