CN205678442U

CN205678442U - A kind of LED area light source module

Info

Publication number: CN205678442U
Application number: CN201620569380.5U
Authority: CN
Inventors: 王圣然
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-07
Filing date: 2016-06-07
Publication date: 2016-11-09
Anticipated expiration: 2026-06-07

Abstract

The utility model is a kind of LED (light emitting diode) area source module, belongs to the integrated technique technical field of LED lamp or LED backlight parts.There is obvious defect in existing LED light source module, or luminous efficiency is low, or the thickness of light source module itself is very thick, it is impossible to realizes the lightening of fitting structure.The utility model area source module, to have the optics sheet material of microlens array as novel diffuser plate, replaces common diffuser plate, is greatly improved the diffusion of light.Both do not need to increase the reticular density of LED, it is not required that increase the spacing between diffuser plate and LED, just can reach more satisfactory even light effect, and light efficiency is maintained at more than 90%.The utility model area source module very suitable for making indoor LED illumination light fixture and LED advisement lamp case.

Description

A kind of LED area light source module

Technical field

The utility model is a kind of LED (light emitting diode) area source module, belongs to LED lamp or LED backlight parts Integrated technique technical field.LED light source module existing more than ten years history, by this process means up to tens to upper The integrated area source module of making of the LED of hundred, then according to reality apply each area source module can be independently operated, or Combination becomes bigger area source.The utility model area source module very suitable for making indoor LED illumination light fixture and LED advertising lamp Case etc..

Background technology

People usual opposite light source module has 2 requirements: one is that its luminescence of requirement must be uniformly, as a face；Separately One to be intended to modulus group more light more thin then better, so just can produce not only light but also thin light fixture or advertising lamp box, not only can Save product cost, moreover it is possible to convenient transport and installation.But LED is spot light, need to take measures to convert thereof into area source.Mesh Front conventional two kinds of ways: a kind of bottom surface being to be placed on the dot matrix that LED forms module frame, its light-emitting area faces a diffusion Plate, light can be diffused by diffuser plate, and then makes LED point light source become than more uniform area source.This mode is referred to as " straight Following formula is luminous "；Another kind of way is the side that the lamp bar phase by LED composition is embedded in module frame, one piece of light guide plate of middle placement, The light-emitting area of LED is close to the sidewall of light guide plate, by light guide plate, LED point light source is scattering into area source, and this mode is referred to as " side is luminous ".Although both ways are all effective, but obvious defect is individually present.

For straight-down negative is luminous, want to obtain uniform visual effect, need the density increasing LED dot matrix (i.e. to increase The quantity of LED), or increase the spacing (being equal to add the thickness of module) between diffuser plate and LED, otherwise diffuser plate cannot Fully diffusion, LED light spot particle is still visible.Increase the spacing between diffuser plate and LED, with require area source module more light more Bao Zeyue becomes conflict well.The luminous light efficiency of straight-down negative is generally higher, between 70%-95%, this is because LED light source The luminous flux producing directly is transmitted by diffuser plate, and light efficiency depends primarily on the light transmittance of diffuser plate.

Just indirectly scattered out by light guide plate produced by the LED lamp bar of side owing to being embedded in, use this side Luminous area source module does not needs to increase LED quantity, it is also possible to accomplish not only light but also thin.But the luminous light efficiency in side is very low, generally Only 30%-50%, even light effect also can be deteriorated (because the ink of light guide plate silk-screen can volatilize) with the passage of the time of use.

Light fixture specular removal should be kept, realize that fitting structure is lightening again, it is necessary to transform the luminous shape of existing LED light source Formula.

Content of the invention

For keeping light fixture specular removal, the utility model LED area light source module still uses straight-down negative illumination mode, and continues to use Its integrated technique.Feature of the present utility model is: to have the optics sheet material of microlens array as novel diffuser plate, replace general Logical diffuser plate, is greatly improved the diffusion of light.The thickness of this novel diffuser plate is suitable with common diffuser plate, and such one Come, both do not needed to increase LED reticular density, it is not required that increase the spacing between diffuser plate and LED, just can reach more satisfactory Even light effect, also make area source more light more thin while keeping specular removal, better be achieved.

Novel diffuser plate top layer be embossed a layer depth be 150 nanometers to 50 microns, width is that 300 nanometers are to 100 microns The microlens array of the order of magnitude, this microlens array is commonly called as " texture ".The thickness of the utility model LED area light source module finished product Below 5 centimetres, generally below 2 centimetres, the thickness identical with side luminescence and even light effect, absolutely not LED light spot are reached Grain occurs, and light efficiency is maintained at more than 90%.

Brief description

Fig. 1 is the schematic diagram of the utility model LED area light source module.

The implication that each sequence number in figure represents is:

(1) microlens array optical sheet

(2) LED dot matrix

(3) printed circuit board (PCB)

(4) housing

Detailed description of the invention

Explain accompanying drawing and explanation invention place of the present utility model below in conjunction with embodiment.

Fig. 1 is the schematic diagram of the utility model LED area light source module, is the LED dot matrix of a kind of square arrangement.LED point Battle array (2) is fixedly welded on printed circuit board (PCB) (3), and it is i.e. micro-that the top of LED dot matrix (2) covers one or more novel diffuser plate Lens arra optical sheet (1), replaces common diffuser plate with this microlens array optical sheet, then embeds them in housing (4) Fixing, after test is aging, become the utility model LED area light source module.

The utility model LED area light source module can be standardized by the size of LED dot matrix and Shape Classification, seriation Produce.

In sum, being LED dot matrix (2) bottom the utility model light source module, LED dot matrix (2) is fixedly welded on printing On circuit board (3), fixing in embedding them into housing (4), feature of the present utility model is: the top of LED dot matrix (2) covers One or more novel diffuser plate i.e. microlens array optical sheet (1).

Novel diffuser plate top layer be embossed a layer depth be 150 nanometers to 50 microns, width is that 300 nanometers are to 100 microns The microlens array of the order of magnitude.

The above, be only preferable enforcement example of the present utility model, not make any pro forma limit to invention System, any those skilled in the art are changed possibly also with the technology contents of the disclosure above or are modified to equivalent variations Equivalent embodiments, but every without departing from technical solutions of the utility model content, according to technical spirit pair of the present utility model Any simple modification, equivalent variations and the modification that above example is made, all still falls within the scope of technical solutions of the utility model In.

Claims

1. a LED area light source module, is LED dot matrix (2) bottom light source module, and LED dot matrix (2) is fixedly welded on printed circuit It is on plate (3), fixing in embedding them into housing (4), it is characterised in that: it is new that the top of LED dot matrix (2) covers one or more Type diffuser plate i.e. microlens array optical sheet (1).

2. LED area light source module as claimed in claim 1, it is characterised in that: novel diffuser plate top layer is embossed a layer depth Be 150 nanometers to 50 microns, width is the microlens array of 300 nanometers to 100 micron number magnitudes.