CN203477980U

CN203477980U - Area light source module of white light LEDs

Info

Publication number: CN203477980U
Application number: CN201320622630.3U
Authority: CN
Inventors: 刘新
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-10
Filing date: 2013-10-10
Publication date: 2014-03-12
Anticipated expiration: 2023-10-10

Abstract

The utility model relates to the field of light sources, in particular to an area light source module of white light LEDs. According to the area light source module of the white light LEDs, the white light LEDs are packaged in a plastic outer shell and electric pins are led out. A PCB is arranged in the plastic outer shell, copper layers are laid on the double faces of the PCB, two welding holes of each LED support are formed in each point on the PCB according to matrix position rules, each LED support comprises two parts, one part of each LED support is a long-shaped support body with the top end provided with an arc concave face, the two long-shaft support bodies of each LED support are inserted into the two corresponding welding holes in the PCB and are bonded on the first-face copper foil layer of the PCB through flexible heat-conducting glue, the second face of the PCB with the copper layers laid on the double faces are provided with a copper foil wire and a welding disk corresponding to the welding holes and the LED supports are connected with the copper foil layers through soldering tin.

Description

A kind of modular surface light source of white light LEDs

Technical field

The utility model relates to light source field, relates in particular to the modular surface light source of LED.

Background technology

Area source be a kind of of lighting source, be corresponding point light source, it is to belong to the luminous lighting system of a kind of area.Traditional modular surface light source is generally to adopt cathode tube fluorescent lamp, high pressure gas lamp or incandescent tengsten lamp to realize.Relatively simple but although these conventional light source realize the lighting system of area source, still come with some shortcomings, as consume energy large, generate heat high, the life-span is short, be unfavorable for environmental protection etc. problem.

And along with the development of LED technology, it has the unrivaled advantage of many traditional lighting modes, as consume energy relatively less, caloric value is relatively lower, the advantage of longer service life.But LED is the recombination luminescence by semiconductor chip, be to belong to typical point light source light-emitting mode.Therefore, if the LED of energy-conserving and environment-protective is applied to modular surface light source, is one and has problem to be solved.

Utility model content

The utility model, for the problems referred to above, proposes the illumination scheme of the area source of a kind of LED of realization, is white-light LED encapsulation to be become to the structure of modular surface light source.

The technical solution of the utility model is:

The modular surface light source of white light LEDs of the present utility model is packaged with a plurality of white light LEDs, and draws electrical pin in a plastic casing.In described plastic casing, be provided with the PCB circuit board of a double-side copper-applying layer, 2 welding holes of each LED support are set by matrix position rule each point on described PCB circuit board, each described LED support comprises 2 parts, one of them part of LED support is the long axis frame body of a top band circular arc concave surface, this circular arc concave surface is provided with LED chip, 2 parallel placements of long axis frame body also adopt the convex surface optical package structure of transparent resin endways, 2 long axis frame bodies of each described LED support insert 2 welding holes corresponding on PCB circuit board, and by flexible heat-conducting glue, be bonded in the first surface copper foil layer of PCB circuit board, the second face of the PCB circuit board of described double-side copper-applying layer is provided with the pad of Copper Foil wire and corresponding welding hole, and link described LED support and copper foil layer by scolding tin.

The subtended angle of described circular arc concave surface is 90 °, and diameter is 2mm.

Described white light LEDs is 9, is 3 * 3 arranged in matrix in rectangular plastic shell.

Described LED support top layer is coated with argent film plating layer.

The beneficial effects of the utility model:

The utility model adopts as above technical scheme, has realized the illumination scheme of the area source of LED, is white-light LED encapsulation to be become to the structure of modular surface light source, has advantages of simple in structure, operating temperature, long service life.

Accompanying drawing explanation

Fig. 1 is schematic perspective view of the present utility model;

Fig. 2 is the schematic diagram of PCB circuit board of the present utility model;

Fig. 3 is internal view of the present utility model;

Fig. 4 is electrical principle connection layout of the present utility model.

The specific embodiment

Now with the specific embodiment, the utility model is further illustrated by reference to the accompanying drawings.

Consult shown in Fig. 1, the modular surface light source of white light LEDs of the present utility model is packaged with a plurality of white light LEDs 2, and draws electrical pin 3 in a plastic casing 1.So just can realize the LED face luminous lighting of white light.

Consult shown in Fig. 2, in described plastic casing 1, be provided with the PCB circuit board 4 of a double-side copper-applying layer, 2 welding holes 401 of each LED support 201 are set by matrix position rule each point on described PCB circuit board 4.Preferably, the white light LEDs of area source of the present utility model is 9, is 3 * 3 arranged in matrix in rectangular plastic shell 1.Therefore, the PCB circuit board 4 of described double-side copper-applying layer has 18 welding holes 401 arranging in relevant position.

Consult shown in Fig. 3, each described LED support 201 comprises 2 parts, one of them part of LED support 201 is the long axis frame body of a top band circular arc concave surface, this circular arc concave surface is provided with LED chip 202, 2 parallel placements of long axis frame body also adopt the convex surface optical package structure of transparent resin 203 endways, 2 long axis frame bodies of each described LED support 201 insert 2 welding holes 401 corresponding on PCB circuit board 4, and by flexible heat-conducting glue 5, be bonded in the first surface copper foil layer of PCB circuit board 4, the second face of the PCB circuit board 4 of described double-side copper-applying layer is provided with the pad of Copper Foil wire and corresponding welding hole, and link described LED support 201 and copper foil layer by scolding tin 6.Preferably, the subtended angle of described circular arc concave surface is 90 °, and diameter is 2mm.Described LED support 201 top layers are coated with argent film plating layer.

Consult shown in Fig. 4, will be wherein 3 white light LEDs first connect, then every 3 white light LEDs are one group and are together in series.Like this, the operating voltage range of the modular surface light source of preferred embodiment of the present utility model is 10V～12V, and current margin is 60mA left and right.

The modular surface light source of white light LEDs of the present utility model not only can be applied the square face light-source structure of most preferred embodiment, also can be applied to the embodiment occasion of multiple area source simultaneously, can piece together combination, form symbol, word, can also mate use with switch key, become a kind of key light emitting body showing with LED power on/off status function.The utility model be exactly by two-sided PCB in conjunction with the LED support of special improvement LED chip die bond on it, then pressure welding, assembled package.Due to LED point light source groups is synthesized to area source, thermal resistance is also high simultaneously, therefore, by the Copper Foil of pcb board and the combination of flexible heat-conducting glue, effectively heat is transmitted out.

Although specifically show and introduced the utility model in conjunction with preferred embodiment; but those skilled in the art should be understood that; within not departing from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection domain of the present utility model.

Claims

1. the modular surface light source of a white light LEDs, in a plastic casing (1), be packaged with a plurality of white light LEDs (2), and draw electrical pin (3), it is characterized in that: the PCB circuit board (4) that is provided with a double-side copper-applying layer in described plastic casing (1), upper 2 welding holes (401) that each LED support (201) is set by matrix position rule each point of described PCB circuit board (4), described each LED support (201) comprises 2 parts, one of them part of LED support (201) is the long axis frame body of a top band circular arc concave surface, this circular arc concave surface is provided with LED chip (202), 2 parallel placements of long axis frame body also adopt the convex surface optical package structure of transparent resin (203) endways, 2 long axis frame bodies of described each LED support (201) insert upper corresponding 2 welding holes (401) of PCB circuit board (4), and by flexible heat-conducting glue (5), be bonded in the first surface copper foil layer of PCB circuit board (4), the second face of the PCB circuit board (4) of described double-side copper-applying layer is provided with the pad of Copper Foil wire and corresponding welding hole, and link described LED support (201) and copper foil layer by scolding tin (6).

2. the modular surface light source of white light LEDs according to claim 1, is characterized in that: the subtended angle of described circular arc concave surface is 90 °, and diameter is 2mm.

3. the modular surface light source of white light LEDs according to claim 1, is characterized in that: described white light LEDs is 9, is 3 * 3 arranged in matrix in rectangular plastic shell.

4. the modular surface light source of white light LEDs according to claim 1, is characterized in that: described LED support top layer is coated with argent film plating layer.