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Lighting system

A technology of lighting and light-emitting components, which is applied in the direction of output power conversion devices, electrical components, DC power input conversion to DC power output, etc. It can solve the problems of large output current tolerance of car lights and failure to meet low-brightness lighting specifications, etc.

Pending Publication Date: 2021-08-17
CHICONY POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, this brightness adjustment method may cause the output current tolerance of different lamps at low brightness to be too large due to the difference in parts during mass production of products, resulting in failure to comply with the regulations for low brightness lighting in regulations.

Method used

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Embodiment Construction

[0025] The following is a detailed description of the embodiments in conjunction with the accompanying drawings, but the described specific embodiments are only used to explain the present case, and are not used to limit the present case, and the description of the structure and operation is not used to limit the order of its execution. The recombined structure and the devices with equivalent functions are all within the scope of the present invention.

[0026] Unless otherwise specified, the terms used throughout the specification and claims generally have the ordinary meaning of each term as used in the field, in the context of the invention and in the special context. Certain terms used to describe the present invention are discussed below or elsewhere in this specification to provide those skilled in the art with additional guidance in describing the present invention.

[0027] In addition, the words "comprising", "including", "having", "containing" and so on used herein a...

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Abstract

A lighting system suitable for receiving two kinds of power signals includes a light emitting unit, a switch control circuit, first and second power adjustment circuits, and first and second switches. The switch control circuit is electrically connected to the light emitting unit, the first and second switches. When the light emitting unit and the switch control circuit receive a first power signal, the switch control circuit turns on the first switch and turns off the second switch, so that a first current drives the light emitting unit to emit. When the light emitting unit and the switch control circuit do not receive the first power signal and the second power adjustment circuit receives the second power signal, the switch control circuit turns off the first switch and turns on the second switch, so that a second current drives the light emitting unit to emit. Therefore, the driving current of the light-emitting element can be controlled within a smaller error range.

Description

technical field [0001] The present invention relates to a lighting system, in particular to a lighting system suitable for receiving two kinds of power supply signals. Background technique [0002] In the regulations and specifications of car lights, lights with different functions (such as vehicle width lights and daytime running lights) must meet different light output conditions (such as: brightness limit and light type) to achieve the purpose of traffic safety . [0003] Generally speaking, switchable power supply is used when the wattage of the light is large, and linear power supply is used when the wattage of the light is small, which can achieve the purpose of different fixed brightness. And if you want to use the same group of light-emitting diodes (Light-emitting diodes, LEDs) to produce multiple brightnesses, the common practice is to use switching power supplies to achieve brightness adjustment methods in conjunction with general lighting, such as pulse width mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B45/30H05B45/10
CPCH02M1/10H02M3/156H05B45/3725H05B45/10H05B47/10H05B45/30
Inventor 林陈琦
Owner CHICONY POWER TECH CO LTD