CN201221690Y

CN201221690Y - LED plane illuminating device

Info

Publication number: CN201221690Y
Application number: CNU200820059094XU
Authority: CN
Inventors: 林小建
Original assignee: SHANGHAI FOREVER FLASH OPTO-TECHNOLOGY Co Ltd
Current assignee: SHANGHAI FOREVER FLASH OPTO-TECHNOLOGY Co Ltd
Priority date: 2008-05-29
Filing date: 2008-05-29
Publication date: 2009-04-15
Anticipated expiration: 2018-05-29

Abstract

The utility model discloses an LED plane device which comprises an aluminum base plate, a plurality of LED chips and a silica gel coating containing a certain percentage of fluorescent powders; wherein, the LED chips mutually connected in parallel or in series are welded and packaged on the aluminum base plate; a layer of protective material for protecting the LED chips and gold threads connecting the chips with the aluminum base plate is coated on the aluminum base plate, and the material can be epoxide resin or silica gel. The silica gel containing a certain percentage of fluorescent powder is poured on the aluminum base plate, and the thickness of the silica gel covering the aluminum base plate is 2 mm to 3 mm. In addition, because the device adopts the LED chips emitting blue light, the blue light during transmission and the yellow light emitted by yellow fluorescent powders in the light-emitting silica gel coating can form white light with optimum brightness. If a certain percentage of red fluorescent powders is added into the yellow fluorescent powder, the device can emit warm white light similar to sunlight.

Description

The LED planar emission apparatus

Technical field:

The utility model relates to optics and led circuit, particularly a kind of LED planar emission apparatus.

Background technology:

Existing employing LED mostly adopts with single or a few LED lamp composition light source as the device of light emitting source.Though improvement by technology, it is good to have occurred a lot of luminescent properties at present successively, the LED lamp that light is bright, but it is inhomogeneous to overcome light by the constructed light-emitting device of several or single led lamp in the propagation of light, and the situation of hot spot appears during illumination easily.Influenced the whole illumination effect of device like this.And traditional light source heat radiation poor effect, directly influenced life-span of LED.

The utility model content:

In order to solve the problems of the technologies described above, the purpose of this utility model provides a kind of LED planar emission apparatus.

The concrete technical scheme of this device is as follows:

This LED planar emission apparatus comprises aluminium base, a plurality of led chip and the silica-gel coating that contains certain proportion fluorescent material.Wherein, welding is packaged with a plurality of led chips in series or in parallel with each other on aluminium base, also is coated with one deck simultaneously and is used for protecting led chip and chip to be connected the protective material of gold thread with aluminium base, and this protective material can be epoxy resin or silica gel.Perfusion contains the silica gel of certain proportion fluorescent powder above the aluminium base, and the thickness that this luminous layer of silica gel covers on the aluminium base is between the 2-3 millimeter.

In addition and since in this device employing be the turn blue led chip and the yellow fluorescent powder of coloured light, its blue light in transmittance process with luminous layer of silica gel in yellow fluorescent powder with gold-tinted can form the better white light of brightness.As in yellow fluorescent powder, mixing a certain proportion of rouge and powder again, can send near the photochromic warm white of the sun.

According to technique scheme, the utility model is the flat luminous source that is made of led chip and luminous layer of silica gel owing to what adopt, the spot light that this compares and generally adopted in the past, light-emitting area light is more even, soft, and the appearance hot spot of avoiding can also can fully obtain the luminosity of led chip performance simultaneously.Guarantee the life-span of led chip long-term work, greatly reduced the decay of brightness after the led chip long-term work.

Description of drawings:

Further specify the utility model below in conjunction with the drawings and specific embodiments.

Fig. 1 is the profile of LED planar emission apparatus.

Fig. 2 is that the led chip of this device among the embodiment is in the aluminium base trace-diagram.

The specific embodiment:

For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.

As shown in Figure 1 and Figure 2, detailed process is as follows in the preparation for the utility model:

At first, 32 LEDs chips 2 are encapsulated on the same aluminium base 1 uniformly, promptly these chips are connected on the ready-made aluminium base.

Secondly, on aluminium base, be coated with the effect that thin epoxy resin of one deck or silica gel play protection luminescence chip and gold thread.

Then, pour into the silica gel 3 that contains the certain proportion fluorescent powder above the aluminium base.

It should be noted that the thickness that luminous layer of silica gel covers on the aluminium base is between the 2-3 millimeter.The complementary white light that forms of gold-tinted that blue light that led chip sends and fluorescent material are sent.As in yellow fluorescent powder, mixing a certain proportion of rouge and powder again, can send near the photochromic warm white of the sun.

More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1, LED planar emission apparatus comprises aluminium base, a plurality of led chip and the silica-gel coating that contains certain proportion fluorescent material; It is characterized in that; welding is packaged with the led chip of a plurality of mutual series connection on aluminium base; also being coated with one deck simultaneously is used for protecting led chip and chip to be connected the protective material of gold thread with aluminium base; perfusion contains the silica gel of certain proportion fluorescent powder above the aluminium base, and the thickness that this luminous layer of silica gel covers on the aluminium base is between the 2-3 millimeter.

2, according to the LED planar emission apparatus of claim 1, it is characterized in that, described device adopts is the turn blue led chip and the yellow fluorescent powder of coloured light, its blue light in transmittance process with luminous layer of silica gel in yellow fluorescent powder with gold-tinted can form the better white light of brightness.

3, according to the LED planar emission apparatus of claim 2, it is characterized in that, as in yellow fluorescent powder, mixing a certain proportion of rouge and powder again, then blue light in transmittance process with luminous layer of silica gel in the yellow fluorescent powder effect after can send near the photochromic warm white of the sun.

According to the LED planar emission apparatus of claim 1, it is characterized in that 4, described protective material can be epoxy resin or silica gel.