LED light-emitting device

一种发光装置、发光部的技术，应用在照明装置、电致发光光源、光源等方向，能够解决不容易进行、不容易、复杂运算处理等问题，达到低成本、容易色温的控制的效果

Inactive Publication Date: 2012-01-04
CCS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the difference between each group of LED elements or the difference in deterioration speed has a great influence on the color temperature of the obtained white light, and the color temperature control of the white light requires, for example, extremely subtle adjustments or complicated calculation processing, etc., and is not easy to perform.
This also means that for an LED light-emitting device that uses a structure that produces white light by mixing red light, green light, and blue light once emitted outside the device, even if you want to subtly adjust the color temperature of white light, the color temperature is very low. Large changes are prone to occur. If such a type of LED lighting device is used, the control of the color temperature of white light still requires complex calculation processing and is not easy.

Method used

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Examples

Experimental program
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Embodiment Construction

[0040] Embodiments of the present invention will be described below with reference to the drawings.

[0041]

[0042] Such as figure 1 as well as figure 2 As shown, the light emitting system 1 related to this embodiment has: a power supply 2; an LED light emitting device 3 having three kinds of light emitting parts 31, 32, 33, and each light emitting part 31, 32, 33 has LED elements 311, 321, 331 respectively. , and emit red light, green light and blue light respectively; the variable resistors 41, 42, 43 and the control device 5 are respectively connected to the LED elements 311, 321, 331 of the light emitting parts 31, 32, 33.

[0043] Each part is described in detail below.

[0044] The voltage of the power supply 2 is larger than the voltage drops of the LED elements 311 , 321 , and 331 .

[0045] The LED lighting device 3 has a red-based light-emitting part 31 that emits red light, a green-based light-emitting part 32 that emits green light, and a blue-based light-e...

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Abstract

In order to provide an LED light emitting device that can easily control a color temperature of white light, the LED light emitting device is provided with a plurality of types of light emitting parts that: respectively have LED elements that emit ultraviolet radiation or violet color visible light, and phosphors that absorb the ultraviolet radiation or violet color visible light to emit colored light; and emit the colored light, wherein: the colored light emitted by the plurality of types of light emitting parts become white light when all mixed with each other; the LED elements of the plurality of types of light emitting parts are all the same ones, and mounted on a single base material; and two or more light emitting parts overlap with each other in their parts.

Description

technical field [0001] The invention relates to an LED lighting device which is easy to control the color temperature of white light. Background technique [0002] Conventionally, an LED light-emitting device is known that emits white light using three types of LED elements: a red LED element, a green LED element, and a blue LED element (Patent Document 1). However, the forward voltage drop (vf) of each LED element is different. The red LED element is about 2.0V, the green LED element is about 3.3V, and the blue LED element is about 3.4V. Therefore, adjust the current flowing through each LED element. Adjusting the balance of the amount of light requires complicated arithmetic processing, and therefore, there is a problem that it is difficult to control the color temperature of white light. [0003] In addition, if such a conventional LED lighting device is adopted, the red light, green light, and blue light emitted from the LED lighting device are mixed together outside th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50H01L33/00H05B44/00
CPCH05B33/0821H05B33/0857H01L2224/49107H01L25/0753H01L33/508H01L33/504H05B45/40H05B45/20H01L2224/48091H01L2924/00014
Inventor 铃木弘一小西淳田中裕一郎米田贤治
Owner CCS INC
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