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A non-polar LED automobile headlamp high-low beam switching driving scheme

A technology for far and near beams and headlights, applied in the electronic field, can solve the problems of high cost, poor operability, poor versatility, wrong power connection, etc., and achieve the effects of high cost performance, strong versatility and low cost

Inactive Publication Date: 2018-12-11
毛勇彪
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages: the drive circuit consists of many electronic devices, the circuit is complex, the cost is high, accidents are likely to occur due to wrong connection, the drive volume is large, and ordinary LED headlight products that cannot achieve universal built-in drive need to be identified when replacing LED headlights. Disadvantages such as negative control, operability, and poor versatility

Method used

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  • A non-polar LED automobile headlamp high-low beam switching driving scheme
  • A non-polar LED automobile headlamp high-low beam switching driving scheme
  • A non-polar LED automobile headlamp high-low beam switching driving scheme

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Embodiment Construction

[0026] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0027] refer to Figure 1 As shown, a non-polar LED vehicle headlight switching driving scheme for far and near light, including input rectification protection circuit A1, far and near light switching control circuit A2 and LED lamp group constant current drive circuit A3.

[0028] The input rectification protection circuit A1 includes JG, COM, YG, DL1, DL2, D1, D3, and C1; the JG port is connected to the cathode of DL1, the anode of DL2, the anode of DL1 is grounded (the negative pole of the drive power supply), and the cathode of DL2 is connected to the positive pole of the power supply (the positive pole of the drive power supply ), the COM po...

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Abstract

The invention relates to a non-polar LED vehicle headlamp high-low beam switching driving scheme, which comprises an input rectification protection circuit, a high-low beam switching control circuit and an LED lamp group constant current driving circuit. The input rectifier protection circuit comprises a JG port, a YG port, a COM port, DL1, DL2, D1, D3 and C1; The high-low beam switching control circuit is divided into a low beam group switching circuit and a high beam group switching circuit. The constant current driving circuit is also divided into a low beam group and a high beam group. This non-polar LED automotive headlamp high-low beam switching drive scheme guarantees the performance while achieving the advantages of fewer components, low cost, miniaturization, non-polar input, strong versatility of LED driver and built-in driving LED headlamp miniaturization products.

Description

technical field [0001] The invention relates to a constant-current drive scheme for switching high and low beams of LED vehicle headlights, and is especially suitable for a constant-current drive scheme for miniaturized non-polarity input LED vehicle headlights for switching control of high and low beams, and belongs to the field of electronic technology. Background technique [0002] Vehicle headlights from electric vehicles to automobiles are important components to ensure safe driving. When the vehicle is driving in a poorly lit or dark road environment, the driver must turn on the headlights to ensure safe driving. When the road environment is in compliance and does not affect the passage of other people and vehicles, the high beam must be turned on to ensure driving safety. When driving in an environment with a large number of people, the low beam must be switched on to ensure the safety of other vehicles and pedestrians. [0003] LED car headlights have appeared in re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/00Y02B20/30
Inventor 毛勇彪
Owner 毛勇彪
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