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Illuminating device

A lighting device, red technology, applied in the direction of lighting devices, fixed lighting devices, lighting and heating equipment, etc., can solve the problems of insufficient evaluation of color, insufficient evaluation methods, etc.

Inactive Publication Date: 2012-02-01
TOSHIBA LIGHTING & TECH CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such a color rendering evaluation method is a relative evaluation for a reference light source, and it is not a sufficient evaluation method from the viewpoint of making colors look bright, and there is a problem that the conventional light source devices cannot sufficiently evaluate the color rendering properties. More vivid effects such problems

Method used

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Examples

Experimental program
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Embodiment Construction

[0109] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0110] figure 1 One embodiment of the lighting device according to the present invention is a configuration diagram showing a schematic configuration of the lighting device.

[0111] Such as figure 1 As shown, the lighting device 1 of this embodiment is configured to include a device body 2 , a light source device 3 disposed in the device body 2 , and a lighting device 4 for controlling the light source device 3 to be turned on or off.

[0112] The device main body 2 is arranged, for example, on a ceiling in a building or the like, and has a shape in which the light source device 3 can be arranged. In addition, the device main body 2 is formed in a low frame shape or a plate shape, but it is not limited to these shapes, and any shape can be used as long as the light source device 3 can be arranged.

[0113] The light source device 3 has a light source configured to i...

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PUM

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Abstract

A lighting apparatus includes a red LED; a green LED; a blue LED; and a white LED made up of a blue light-emitting element and a yellow phosphor, wherein the red LED, the green LED, the blue LED, and the white LED generate 26 to 38%, 35 to 50%, 0 to 2%, and 12 to 33% of light, respectively, and white light obtained by additive color mixing of light from the red, green, blue, and white LEDs has a correlated color temperature of 2800 K or more to less than 3500 K, a deviation of 0.02 or below in absolute value, and a color gamut area ratio of 120% or more to 140% or less. Consequently, the lighting apparatus can radiate an illuminating light which makes colors look vivid.

Description

technical field [0001] The present invention relates to a lighting device including a light source such as a light emitting diode (LED: Light Emitting Diode). Background technique [0002] Conventionally, a light source device including a light source such as an LED is used as a white light source of an illumination device. In particular, a light source device composed of a blue LED and a yellow phosphor has high luminous efficiency and can obtain a large light beam, so it has become the mainstream of white light sources. [0003] As such a light source, for example, as described in Japanese Patent Application Laid-Open No. 2005-101296 (hereinafter referred to as Document 1), there is a monochromatic light emitting part having an LED chip emitting monochromatic light, and a white light emitting part including an independent LED chip. The white light-emitting part is a color-changing light-emitting diode element composed of a blue LED chip that emits blue light and a phospho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/48F21S8/04H01L33/00H01L33/50F21Y101/02
CPCH05B33/086H05B33/0869H01L25/0753F21K9/00H01L2924/0002F21Y2115/10H05B45/22H05B45/20H01L2924/00
Inventor 石渡朋子八代和德内野胜友山崎勇生三田一敏河野仁志
Owner TOSHIBA LIGHTING & TECH CORP
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