CN210722265U

CN210722265U - LED display module

Info

Publication number: CN210722265U
Application number: CN201922337406.XU
Authority: CN
Inventors: 吕孔强; 曾剑平; 谢富松
Original assignee: Shenzhen Huangjia Display Technology Co ltd
Current assignee: Shenzhen Huangjia Display Technology Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-06-09
Anticipated expiration: 2029-12-23

Abstract

The utility model discloses a LED display module, this LED display module include the circuit board, set up a plurality of LED lamps on the circuit board and fill the glue film on circuit board surface, and the glue film includes first glue film and the second glue film that encircles the setting of first glue film, and first glue film is used for sealing the lamp base and the circuit board of LED lamp, and the hardness of second glue film is greater than the hardness of first glue film. The utility model provides an among the prior art LED display module yielding, the off-welding scheduling problem, reduced dead lamp probability of appearing, improved LED display module's life.

Description

LED display module

Technical Field

The utility model relates to an encapsulation technology field, concretely relates to LED display module.

Background

Present most indoor booth apart from LED display module, for preventing great quality problems such as LED fluorescent tube pin oxidation, fluorescent tube drop, ion migration, generally adopt full mode of irritating to fill epoxy resin on the lamp plate surface, treat the colloid solidification back, play waterproof dustproof effect.

Because epoxy hardness is quite high, and not resistant UV, easy ageing, the LED lamp plate causes the circuit board to warp and LED fluorescent tube and circuit board desoldering scheduling problem because of the internal stress easily after long-term the use, appears dying then, influences the display effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a LED display module aims at solving among the prior art LED lamp plate and causes the problem that the circuit board warp and LED fluorescent tube and circuit board desolder because of the internal stress easily after long-term the use.

In order to achieve the above object, the utility model provides a LED display module, this LED display module include the circuit board, set up in a plurality of LED lamps on the circuit board with fill the glue film on circuit board surface, the glue film includes first glue film and encircles the second glue film that first glue film set up, first glue film be used for with the lamp base of LED lamp with the circuit board is sealed, the hardness of second glue film is greater than the hardness of first glue film.

Preferably, the second adhesive layer fixes the lamp pins of the circle of LED lamps at the outermost periphery of the circuit board to the circuit board.

Preferably, the first glue layer is made of a silica gel material.

Preferably, the second adhesive layer is made of epoxy resin material.

Preferably, the LED display module further comprises a housing wrapped outside the circuit board and the adhesive layer.

Preferably, the housing comprises a base and a mask arranged above the base, the mask being movably connected to the base.

Preferably, the face shield is provided with a plurality of through holes corresponding to the positions of the LED lamps, and the LED lamps are arranged in the through holes in a penetrating mode one by one.

The utility model discloses an encapsulation of LED lamp and circuit board is realized to the glue film of inside and outside two-layer different hardness, wherein, adopts comparatively mild first glue film to reduce LED display module's internal stress, prevents that structural deformation and the LED lamp that causes from desoldering, the circuit board is drawn and is taken off and the poor scheduling problem of roughness, adopts comparatively hard second glue film to surround in first glue film periphery simultaneously to increase overall structure's intensity, thereby play better guard action. The utility model provides an among the prior art LED display module yielding, the off-welding scheduling problem, reduced dead lamp probability of appearing, improved LED display module's life.

Drawings

Fig. 1 is a schematic structural diagram of an LED display module according to an embodiment of the present invention;

fig. 2 is a partial cross-sectional view of an LED display module according to another embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same elements or elements having the same function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

The utility model provides a LED display module, in an embodiment, as shown in fig. 1 and fig. 2, this LED display module includes circuit board 1, set up a plurality of LED lamps 2 on circuit board 1 and pour into glue film 3 on circuit board 1 surface, glue film 3 includes first glue film 31 and encircles the second glue film 32 that first glue film 31 set up, first glue film 31 is used for sealing the lamp base of LED lamp 2 with circuit board 1, the hardness of second glue film 32 is greater than the hardness of first glue film 31.

In this embodiment, LED lamp 2 realizes being connected with circuit board 1's electricity through its lamp base welding on circuit board 1, and the effect of filling glue layer 3 is the intensity that increases circuit board 1, reinforcing LED lamp 2 and circuit board 1's the steadiness of being connected to and prevent that LED lamp 2 from intaking and weing on the lamp plate.

In this embodiment, glue film 3 comprises first glue film 31 and second glue film 32, and wherein, first glue film 31 is sealed with the lamp base and the circuit board 1 of LED lamp 2, prevents that steam from getting into through the lamp base and causing LED lamp 2 to wet and corrode, and second glue film 32 then encircles the setting of first glue film 31, specifically is: the second adhesive layer 32 surrounds the circumference of the circuit board 1 and is arranged close to the edge of the circuit board 1, the first adhesive layer 31 is located in the area formed by the second adhesive layer 32 in a surrounding mode, and the first adhesive layer 31 is in seamless connection with the second adhesive layer 32. On the basis, the hardness of the second adhesive layer 32 is greater than that of the first adhesive layer 31, and the second adhesive layer 32 with the greater hardness is used for enhancing the connection stability of the peripheral LED lamp 2 and the circuit board 1 and plays a role in fixing.

When glue is poured, firstly, a layer of second glue layer 32 is arranged on the outer ring of the circuit board 1, then, the first glue layer 31 is half poured in the area formed by the second glue layer 32 in a surrounding mode, the first glue layer 31 covers the lamp pins of each LED lamp 2, the height of the first glue layer 31 exceeds that of the second glue layer 32, and the edge portion of the first glue layer 31 is located above the second glue layer 32, so that the lamp pins of the LED lamps 2 are guaranteed to be sealed with the circuit board 1.

This embodiment realizes the encapsulation of LED lamp 2 and circuit board 1 through the glue film 3 of inside and outside two-layer different hardness, wherein, adopt comparatively soft first glue film 31 to reduce LED display module's internal stress, prevent structural deformation and the LED lamp 2 that causes desolder, circuit board 1 draws and takes off and the poor scheduling problem of roughness, adopt comparatively hard second glue film 32 to encircle in first glue film 31 periphery simultaneously, with the intensity that increases overall structure, thereby play better guard action. The utility model provides an among the prior art LED display module yielding, the off-welding scheduling problem, reduced dead lamp probability of appearing, improved LED display module's life.

Preferably, as shown in fig. 1, the LED lamps 2 are embedded in the glue layer 3 laid on the circuit board 1, and the height of the glue layer 3 only covers the lamp feet of each LED lamp 2, that is, the head of each LED lamp 2 still emerges from the upper end face of the glue layer 3, that is, the present embodiment adopts a half-filling process, so as to further reduce the internal stress of the LED display module, prevent the internal stress from causing structural deformation and the LED lamps 2 from being detached, and in addition, the half-filling process can save material cost.

In a preferred embodiment, as shown in fig. 1 and 2, the second adhesive layer 32 fixes the lamp pins of the LED lamp 2 at the outermost periphery of the circuit board 1 to the circuit board 1.

In this embodiment, the second adhesive layer 32 is further disposed on the circuit board 1 at the outermost periphery of the lamp base of the LED lamp 2, so as to protect the LED lamp 2 at the periphery better. It should be noted that, in the whole LED display module, the position most susceptible to collision is the peripheral LED lamp 2, and the larger the area of the epoxy resin is, the higher the strength of the whole structure is, and the greater the internal stress is, so that the present embodiment is only arranged corresponding to the circle of LED lamps 2 at the outermost periphery of the second adhesive layer 32, thereby taking into account the advantages of protecting the peripheral LED lamp 2, ensuring the strength of the LED display module, and reducing the internal stress.

In a preferred embodiment, the first adhesive layer 31 is made of a silicone material.

The silica gel material is low in hardness, and has high toughness and good heat dissipation performance, so that the internal stress of the LED display module is further reduced, and the heat dissipation effect of the structure is enhanced. The second glue layer 32 may be made of a glue filling material with a hardness higher than that of silicone, for example: the second adhesive layer 32 is made of epoxy resin. The hardness of the epoxy resin is obviously higher than that of the silica gel material, so that the strength of the whole structure can be improved.

In a preferred embodiment, as shown in fig. 1, the LED display module further comprises a housing 4 wrapped around the circuit board 1 and the adhesive layer 3. The housing 4 functions to protect the circuit board 1 and the LED lamp 2 located therein from moisture or impact damage.

In a preferred embodiment, as shown in FIG. 1, the housing 4 includes a base 41 and a visor 42 disposed above the base 41, the visor 42 being movably coupled to the base 41.

In this embodiment, the main function of the cover 42 is to improve the overall strength and protect the circuit board 1 and the LED lamp 2. The face shield 42 covers the upper surface of the circuit board 1, the circuit board 1 and the adhesive layer 3 are completely wrapped inside, and the LED lamp 2 can be partially located in the face shield 42 while another part penetrates out of the face shield 42, or completely located in the face shield 42. When the LED lamp 2 is completely located in the face shield 42, the face shield 42 is made of a hard transparent material, so that light generated by the LED lamp 2 can be emitted through the face shield 42; when the LED lamp 2 partially penetrates the face shield 42, the face shield 42 may be made of an opaque hard material.

Preferably, as shown in fig. 1, the present application adopts a structure form that the LED lamp 2 is partially located in the face mask 42, and the other part penetrates out of the face mask 42, specifically: the face mask 42 is provided with a plurality of through holes corresponding to the positions of the LED lamps 2, and the LED lamps 2 penetrate through the through holes one by one and penetrate out of the face mask 42 through the through holes. So design, can realize the protection and the improvement bulk strength to circuit board 1, prevent simultaneously that the light of adjacent LED lamp 2 from interfering each other, influencing whole display effect.

The above is only the part or the preferred embodiment of the present invention, no matter the characters or the drawings can not limit the protection scope of the present invention, all under the whole concept of the present invention, the equivalent structure transformation performed by the contents of the specification and the drawings is utilized, or the direct/indirect application in other related technical fields is included in the protection scope of the present invention.

Claims

1. The utility model provides a LED display module, its characterized in that, include the circuit board, set up in a plurality of LED lamps on the circuit board are in with pouring into the glue film on circuit board surface, the glue film includes first glue film and encircles the second glue film that first glue film set up, first glue film be used for with the lamp foot of LED lamp with the circuit board is sealed, the hardness of second glue film is greater than the hardness of first glue film.

2. The LED display module of claim 1, wherein the second adhesive layer secures the lamp feet of the LED lamp of the outermost periphery of the circuit board to the circuit board.

3. The LED display module as claimed in claim 1, wherein the first glue layer is made of a silicone material.

4. The LED display module as claimed in claim 3, wherein the second adhesive layer is made of epoxy resin.

5. The LED display module of claim 1, further comprising a housing wrapped around the circuit board and adhesive layer.

6. The LED display module of claim 5, wherein the housing comprises a base and a mask disposed over the base, the mask being movably coupled to the base.

7. The LED display module of claim 6, wherein the face mask is provided with a plurality of through holes corresponding to the positions of the LED lamps, and the LED lamps are arranged in the through holes one by one.