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Luminous diode lighting device

A technology for light-emitting diodes and lighting devices, which is applied to lighting devices, lighting device parts, lighting and heating equipment, etc. Uniformity, the effect of improving the uniformity of light output

Inactive Publication Date: 2011-02-09
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, even if the above-mentioned side-lit LED light source 13 is matched with the LED top reflector 15, the light beam emitted by the LED light source 13 is fully mixed in the space formed by the reflective element 14 and the lamp cover 16, and the light beam emitted by the adjacent LED light source 13 is completely mixed. There are still obvious dark areas
That is to say, the point light source cannot be effectively converted into a uniform surface light source, so the brightness of the emitted light from the LED lighting device 10 is uneven.
To sum up, the above phenomena will lead to a decline in the quality of LED lighting devices

Method used

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Examples

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Embodiment Construction

[0019] See also Figure 2 to Figure 5 , The LED lighting device 20 of the preferred embodiment 1 of the present invention includes a light box 21 , a circuit board 22 , multiple side-lit LED light sources 23 , a reflective element 24 , multiple shades 25 and a lamp cover 26 .

[0020] The light box 21 is a hollow strip structure with an opening 212 . The circuit board 22 is also strip-shaped, and is correspondingly arranged on the bottom of the light box 21 . The plurality of edge-lit LED light sources 23 are electrically connected and arranged at equal intervals on the upper surface of the circuit board 22 . like Figure 5 As shown, each edge-lit LED light source 23 includes a base 231, a semiconductor light-emitting chip 233 disposed on the upper surface of the base 231, and an optical prism 235. The optical prism 235 is disposed above the base 231 and emits light from the semiconductor. The chip 233 is packaged therein. The width of the base portion 231 is larger than t...

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Abstract

The invention discloses a light emitting diode (LCD) lighting device, which comprises a lamp house with an opening, a circuit board, at least one LCD, at least one light shading element, and a lamp cover. The circuit board is arranged at the bottom of the lamp house, and a reflective coating layer is arranged on the surface of the circuit board facing towards the lamp cover. The LCD is arranged on the surface of the circuit board in an electrical connection way. The light shading element is arranged with respect to the LED and comprises a substrate positioned above the corresponding LED and two opposite lateral baffle plates formed by extending from the edge of the substrate to one side of the light shading element, the two lateral baffle plates are respectively abutted against the two side walls of the lamp house, and a plurality of light holes are respectively formed at sites on the substrate close to the two lateral baffle plates. The lamp cover is covered at the opening of the lamp house. The inventive LED lighting device has better optical uniformity.

Description

technical field [0001] The invention relates to an illuminating device, in particular to an illuminating device using a light emitting diode. Background technique [0002] Light Emitting Diodes (LEDs) have the characteristics of environmental protection, high mechanical reliability and long service life, so it is a new trend to use LEDs as light sources of lighting devices. [0003] See figure 1 , is shown as an existing strip-shaped light-emitting diode lighting device 10 (hereinafter referred to as: LED lighting device). The LED lighting device 10 includes a light box 11 , a circuit board 12 , a side-light LED light source 13 , a light-shielding member 14 , an LED top reflector 15 and a lamp cover 16 . The light box 11 is a hollow strip structure with an opening 112 . The circuit board 12 is also strip-shaped, and is correspondingly arranged on the bottom of the light box 11 . The plurality of edge-lit LED light sources 13 are electrically connected and arranged on the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21V17/00F21V19/00F21V13/00F21Y101/02
CPCF21V11/12F21V5/046F21V13/10F21Y2101/02F21V11/14F21V7/0091F21Y2115/10
Inventor 章绍汉
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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