Light source plate of projector

Abstract

The utility model discloses a light source plate of a projector, which comprises a substrate and is characterized in that the substrate is divided into three layers from top to bottom, the upper layer is a printed circuit board layer, LED lamp beads are arranged in the printed circuit board layer, the middle layer is a ceramic glaze layer, and the bottom layer is a copper plate; and the thickness of the ceramic glaze layer is 0.5-10 microns. The light source plate of the projector mainly comprises the copper foil and the copper plate, the extremely thin ceramic glaze layer is arranged between the copper foil and the copper plate, the copper foil, the copper plate and the ceramic glaze layer not only can efficiently dissipate heat and insulate, but also cannot form a thermal resistance phenomenon, the brightness attenuation of the LED lamp beads is slow, the service life of the LED lamp beads is greatly prolonged, and the service life of the projector is prolonged. And the device is particularly suitable for narrow places such as projectors and automobile headlamps.

Description

TECHNICAL FIELD

[0001] The utility model relates to a projector field, especially a light source board of projector. BACKGROUND

[0002] The projector is a kind of device that can project image or video to the screen, and the key to determine the projection quality is often the light source board of projector;The light source board in the existing projector is generally composed of substrate and multiple LED lamp beads installed on the substrate, and the LED lamp beads are usually arranged on the substrate in regular arrangement mode.The LED lamp bead has the characteristics of generating extremely high heat in extremely small volume.Because the heat capacity of LED lamp bead itself is very small, it must conduct the heat away at the fastest speed, otherwise, very high temperature will be generated.Due to the small space of projector, heat dissipation is difficult, so the LED lamp bead brightness decays fast, and the service life is short, and the LED lamp bead needs to be replaced frequently. SUMMARY

[0003] The utility model discloses a light source board of projector, which has good heat dissipation performance, slow LED lamp bead brightness decay and long LED lamp bead service life.

[0004] To solve the above technical problems, the utility model adopts the technical scheme as follows: a light source board of projector, comprising a substrate, the substrate is divided into three layers from top to bottom, the upper layer is a printed circuit board layer, the printed circuit board layer has LED lamp beads, the middle layer is a ceramic glaze layer, and the bottom layer is a copper plate;The thickness of the ceramic glaze layer is 0.5-10 microns.

[0005] Further, the thickness of the ceramic glaze layer is preferably 1-3 microns.

[0006] Further, the printed circuit board layer is a printed circuit formed by etching copper foil, and the LED lamp beads are connected to the printed circuit.

[0007] Compared with the prior art, the utility model has the beneficial effects that:

[0008] The light source board provided by the utility model mainly comprises copper foil and copper plate, and there is an extremely thin ceramic glaze layer between the copper foil and the copper plate, the copper foil, the copper plate and the ceramic glaze layer can efficiently dissipate heat and be insulated, without forming thermal resistance phenomenon, the LED lamp bead brightness decays slowly, the service life of the LED lamp bead is greatly prolonged, and the light source board is especially suitable for narrow spaces such as projectors and automobile headlamps. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the sectional structure drawing of the utility model projector light source board.

[0010] In the drawing, 1, printed circuit board layer;2, ceramic glaze layer;3, copper plate;4, LED lamp bead. DETAILED DESCRIPTION

[0011] The utility model discloses purposes, function features and advantages will be combined with embodiment, reference to the further illustration of the drawings.

[0012] The technical solutions in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings of the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0013] Referring to Figure 1 The utility model discloses a light source board of projector, including substrate, the substrate is divided into 3 layers from top to bottom, the upper layer is printed circuit board layer 1, and there is LED lamp pearl in printed circuit board layer, and the middle is ceramic glaze layer 2, and the bottom layer is copper plate 3.

[0014] The thickness of the ceramic glaze layer is 0.5-10 microns, preferably 1-3 microns, which can ensure the close combination of the ceramic glaze layer and the copper plate and prevent the formation of thermal resistance.

[0015] The printed circuit board layer is a printed circuit formed by copper foil corrosion, and the LED lamp pearl is connected to the printed circuit.

[0016] The light source board of the projector provided by the utility model mainly comprises copper foil and copper plate, and there is an extremely thin ceramic glaze layer between the copper foil and the copper plate. The copper foil, the copper plate and the ceramic glaze layer can efficiently dissipate heat and insulate, and will not form thermal resistance. The brightness attenuation of the LED lamp pearl is slow, which greatly prolongs the service life of the LED lamp pearl, and the utility model is particularly suitable for narrow spaces such as projectors and automobile headlamps.

[0017] The above is only the optional embodiment of the utility model, and does not limit the patent scope of the utility model, and any equivalent structural transformation or direct / indirect application in other related technical fields based on the utility model concept, the contents of the utility model specification and the drawings are included in the patent protection scope of the utility model.

Claims

1. A light source panel for a projector comprising a substrate, characterised in that: The substrate is divided into three layers from top to bottom, the upper layer is a printed circuit board layer, the printed circuit board layer has LED lamp beads, the middle layer is a ceramic glaze layer, and the bottom layer is a copper plate; the thickness of the ceramic glaze layer is 0.5-10 microns.

2. The light source panel of claim 1, wherein: The thickness of the ceramic glaze layer is 1-3 microns.

3. The light source panel of claim 1, wherein: The printed circuit board layer is a printed circuit formed by etching copper foil, and the LED lamp beads are connected to the printed circuit.

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