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LED lighting method and device

A technology of LED lighting and optical modules, which is applied to lighting devices, components of lighting devices, lighting and heating equipment, etc. It can solve problems such as the large structure of LED lamps, restrictions on the rapid promotion of LED lighting, and complex power supply circuit structures. To achieve the effect of increasing the speed of popularization and application, avoiding overheating of LEDs, and avoiding overheating and light decay

Active Publication Date: 2010-12-08
GUIZHOU GUANGPUSEN PHOTOELECTRIC
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  • Abstract
  • Description
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Problems solved by technology

In order to achieve the constant current effect, most of the power supply circuits have complex structures, low efficiency and high cost, resulting in large structures and high prices of LED lamps, which to some extent limits the rapid promotion of LED lighting.

Method used

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Embodiment

[0021] An LED lighting method, characterized in that: the power supply drives the LED for lighting after the constant current of the constant current diode CRD, and the constant current diode CRD and the LED optical module package are integrated in one chip to form an LED optical module integrated chip , The constant current diode CRD has negative power characteristics, so that the LED optical module integrated chip has negative power physical characteristics. When the operating temperature of the entire LED integrated chip is too high, the constant current diode CRD will automatically reduce the circuit power input, so that the LED optical module The temperature of the integrated chip is reduced, thereby protecting the integrated chip of the LED optical module and avoiding the problem of LED light decay due to overheating. The pulse source can be used to output controllable pulses. After being rectified by the diode, the constant current diode CRD with the control terminal is ...

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Abstract

The invention relates to LED lighting method and device, which is characterized in that an electric power supply drives an LED to illuminate after being subject to the constant current action of a constant current diode CRD (Capacitor-Resistor Diode), and the constant current diode CRD and an LED light module are packaged and integrated in a chip to form an LED light module integrated chip. The constant current diode CRD has the characteristic of negative power so that the LED light module integrated chip has the physical characteristic of negative power. When the working temperature of the entire LED integrated chip is too high, the constant current diode CRD can automatically reduce circuit power input so as to lower the temperature of the LED light module integrated chip, so that the LED light module integrated chip can be protected, and the problem of LED light attenuation due to overheating is avoided.

Description

technical field [0001] The invention relates to a lighting method and device, in particular to an LED lighting method and device. Background technique [0002] LED lighting has the advantages of high efficiency and energy saving. The luminous efficiency of most current LED lighting lamps can exceed 70LM / W, which is more energy-saving than traditional energy-saving lamps. Theoretically, the luminous efficiency of green LEDs can be as high as 683LM / W; the theoretical efficiency of white LEDs can also reach 182.45LM / W, so there is huge room for improving LED lighting efficiency. However, overheating of the LED will lead to a rapid decline in the luminous efficiency of the LED, forming the so-called "light decay". The withstand voltage of the LED is about 3.2V (between 3.0 and 3.5V). In theory, the light output of the LED is related to the driving current and has nothing to do with the power supply voltage. Unstable driving current supply will cause the LED to overheat, which ...

Claims

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Application Information

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IPC IPC(8): H05B37/02F21S2/00F21V23/00F21Y101/02
Inventor 张继强张哲源
Owner GUIZHOU GUANGPUSEN PHOTOELECTRIC
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