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Light source and method for manufacturing same

A technology of light source and light-emitting diode, which is applied in the field of light source and can solve problems such as poor volume and bulkiness

Active Publication Date: 2017-11-17
CONTINENTAL AUTOMOTIVE TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both measures reduce the manufacturing costs of standardized light sources, but especially the voltage converters used for boost conversion require relatively expensive or bulky cooling due to poor energy efficiency

Method used

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  • Light source and method for manufacturing same
  • Light source and method for manufacturing same
  • Light source and method for manufacturing same

Examples

Experimental program
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Embodiment Construction

[0029] exist figure 1A side view of a light source 1 with a plurality of LEDs 2 is shown in . The LED 2 is an SMD component which is arranged on or connected to a circuit board 3 . The structural height 4 of the light source 1 in the area of ​​the LED 2 is in the present example approximately 4 mm. Furthermore, the printed circuit board 3 has a converter unit 5 , which is likewise assembled by means of SMD technology, and has a connector 6 for the electrical connection of the light source 1 to the vehicle electrical system or the headlight cable harness. The converter unit 5 is implemented as an integrated kit or system-in-package (SiP) and integrates at least one, preferably a plurality of buck converters 7 (see FIG. 5 ). The step-down converter 7 is provided for voltage conversion from the typical vehicle electrical system range of 6 to 18 V into the LED forward voltage, so that for example (in each case) two LEDs 2 connected in series can be supplied with a constant curre...

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PUM

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Abstract

The invention relates to a light source (1) for integration in a headlamp with a circuit board (3) on which at least one light-emitting diode (LED) is arranged and a method for producing said light source ) (2) and a converter unit (5) for powering said LED (2), wherein said converter unit (5) and said at least one LED (2) are implemented as surface mount devices (surface -mounted device, SMD) and the converter unit (5) has one or more buck converters.

Description

technical field [0001] The invention relates to a light source for integration in a headlamp having a circuit board on which at least one light emitting diode (LED) and a converter unit for supplying said LED are arranged; methods for making such light sources. Background technique [0002] Such light sources are increasingly being used, especially in the motor vehicle sector, in headlights for the main light function or signal light function and are typically combined with optical elements such as reflectors, projectors and light guides . [0003] A conventional LED main headlight used in practice has, for example, one or more LED modules and one or more separate electronic ballasts for supplying the LEDs with a constant current. The LED modules are connected to the ballast by means of plug-in connections and cable connections. Since pulse-width-modulated signals are used to control the LEDs, the lines required for this are radiated in areas that can cause disturbances i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/08H05B44/00
CPCF21V23/005H05B45/10F21S41/151H05B45/375F21V29/70F21V29/89B60Q1/0088
Inventor M·奥斯特雷尔W·克尔纳
Owner CONTINENTAL AUTOMOTIVE TECH GMBH
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