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LED light mixing device

A light mixing device and LED light source technology, which is applied to lighting devices, components of lighting devices, optics, etc., can solve the problems of large thickness of the light mixing device, non-compliance with thinning, and low light output rate, so as to improve the light output rate, The effect of reducing thickness and uniform light mixing

Inactive Publication Date: 2010-09-29
LED ONE HANGZHOU
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of device has the following disadvantages: Since LEDs with a certain thickness need to be accommodated in the diffusion cover, the thickness of the entire light mixing device is relatively large, which does not conform to the trend of thinning; The lower panel of the diffusion cover is emitted, the light is lost, and the light output rate is low

Method used

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Embodiment Construction

[0017] The substantive features of the present invention will be further described below in conjunction with the drawings and specific implementations of the specification.

[0018] Such as figure 1 with figure 2 The LED light mixing device shown includes a rectangular parallelepiped light guide plate 22 made of materials such as PMMA, COP, or PC. The lower plate of the light guide plate 22 is formed with uniform scores or reflective dots. A light-emitting module 1 is provided on at least one side of the light guide plate 22. The light-emitting module 1 includes a long substrate 11 on which at least two monochromatic LED light sources 12 are mounted. A diffusion film 23 is provided above the upper panel of the light guide plate 22. The diffusion film 23 A light-transmitting plate 24 is provided above. A reflective sheet 21 is arranged under the lower panel of the light guide plate 22, and the reflective sheet 21 is made of PET or a material with a highly reflective coating on t...

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Abstract

The invention relates to an LED light mixing device. The existing LED light mixing device does not conform to the tendency of thin appearance, and has low light outlet rate. The LED light mixing device of the invention comprises an illumination module. The invention is characterized in that the LED light mixing device also comprises a light guide plate, the light illumination module comprises a base plate, at least two kinds of single-color LED light sources are arranged on the base plate, the illumination module is arranged on the side surface of the light guide plate, the illumination direction of the LED light source faces the light guide plate, uniform notches or reflecting net points are formed on a lower panel of the light guide plate, and a diffusion film is arranged above the upper panel of the light guide plate. The invention reduces the integral thickness of the light mixing device, the emitting direction of partial LED light sources is changed through the light guide plate with the net points or the notches at the lower panel, the loss caused by light ray emitting from the lower panel of the light guide plate is avoided, and the light outlet rate is improved. Partial light rays are emitted out from the upper side of the light guide plate after being reflected for many times in the light guide plate, the light mixing distance of the LED light source is effectively increased in the period, and the light mixing effect is more uniform.

Description

Technical field [0001] The present invention relates to the field of LED technology, in particular to an LED light mixing device. technical background [0002] LED has the characteristics of narrow spectral line, luminous brightness in the working voltage range approximately proportional to forward current, fast response speed and small size, which is very suitable for light mixing. The commonly used LED light mixing device at present includes a substrate. Multiple monochromatic LED light sources are installed on the substrate. A diffuser is placed on the monochromatic LED light source. The light emitted by each different color LED light source is transmitted to the light-emitting surface above the diffuser. Scatter to form a mixed light effect. This type of device has the following disadvantages: due to the need to accommodate LEDs with a certain thickness in the diffuser, the thickness of the entire light mixing device is large, which does not conform to the trend of thinning;...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V13/00F21V19/00F21V8/00F21Y101/02
Inventor 王万林
Owner LED ONE HANGZHOU
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