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Automotive LED lighting module

A technology for LED lighting and motor vehicles, used in lighting devices, lighting and heating equipment, headlights, etc., to solve problems such as light output flickering and increasing total cost

Active Publication Date: 2021-04-27
LUMILEDS HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this solution requires a dedicated PWM module between the DC power supply and the LED lamp, thereby increasing the overall cost
Another disadvantage of this solution is that the drivers of standardized automotive LED lights are usually not designed to run off the PWM signal and the light output may exhibit flickering

Method used

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  • Automotive LED lighting module

Examples

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Embodiment Construction

[0029] figure 1 It is a schematic diagram of an embodiment of the motor vehicle LED lighting module 1 of the present invention. The lighting module 1 comprises an LED lamp 10 having one or more light emitting diodes 100, a first driver module 11 configured to drive the LED lamp 10 at a first DC voltage level U_hi and a first driver module 11 configured to drive the LED at a second DC voltage level U_lo For the second driver module 12 of the lamp 10, this second DC voltage level U_lo is preferably at a level below any low transients that may occur on the first DC voltage level U_hi. The lighting module 1 further comprises a switch arrangement 13 , 130 connected across the interfaces 151 , 152 . The interface may be in the form of a pair of input pins 151, 152 so that the LED lighting module 1 can be plugged into a suitable connector for connection to a DC voltage source PS delivering a voltage U_hi, U_lo according to the desired light output level. The switch arrangement 13, ...

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PUM

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Abstract

The invention describes an automotive LED lighting module (1) comprising an LED lamp (10) comprising a number of light-emitting diodes (100); a first driver module (11) configured to drive the LED lamp (10) at a first DC voltage level (U_hi); a second driver module (12) configured to drive the LED lamp (10) at a second DC voltage level (U_lo), which second DC voltage level (U_lo) is lower than the first DC voltage level (U_hi); and a switch arrangement (13, 130) comprising an interface (151, 152) for connection to a two-level DC voltage supply (PS), and wherein the switch arrangement (13, 130) is configured to connect the first driver module (11) to the LED lamp (10) when the input voltage is at a first level (U_hi), and to connect the second driver module (12) to the LED lamp (10) when the input voltage level is at a second level (U_lo). The invention further describes an automotive lighting system (2) of a vehicle (3), and a method of operating an automotive LED lighting system (2).

Description

technical field [0001] A motor vehicle LED lighting module; a motor vehicle lighting system; and a method of operating a motor vehicle LED lighting system are described. Background technique [0002] Lighting units comprising light emitting diodes (LEDs) are becoming more and more widespread in applications such as signal lights used in vehicles such as cars, motorcycles, buses and the like. Such lights must meet strict regulations in order to be approved and certified. Standardized lamps that meet regulations (such as UN / ECE R128 regulations) can be referred to according to their functions. For example, LW5 lamps are white lamps suitable for use as headlights for daytime running lights (DRL) functions; LY5 lamps are yellow lamps suitable for Used as left / right signal lights etc. These standardized motor vehicle LED signal lights have built-in electronic drivers and are designed to be connected to a specific "board voltage" to deliver the required luminous flux. The board...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/325H05B45/20H05B45/10H05B44/00
CPCH05B45/10Y02B20/30B60Q1/0094H05B45/30F21S41/00B60Q1/04B60Q1/32B60Q1/34B60Q1/2696B60Q1/3015F21Y2115/10F21S41/663F21S41/141H05B45/3725
Inventor A.蒂明格
Owner LUMILEDS HLDG BV