CN211124838U

CN211124838U - L ED module and fire-proof L ED display screen

Info

Publication number: CN211124838U
Application number: CN202020089124.2U
Authority: CN
Inventors: 张奇; 何昆鹏; 吴涵渠
Original assignee: Shenzhen Aoto Electronics Co Ltd
Current assignee: Shenzhen Aoto Electronics Co Ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-07-28
Anticipated expiration: 2030-01-16

Abstract

The application relates to an L ED module and a fireproof L ED display screen, wherein the L ED module comprises lamp beads, a metal substrate, a bottom shell and a driving board, the lamp bead array is arranged on the metal substrate, the bottom shell is provided with a display surface and a back surface which are oppositely arranged, the metal substrate is fixed on the display surface, one side of the display surface of the bottom shell is provided with a first groove, the metal substrate covers the first groove, a closed cavity is formed by encircling the metal substrate and the bottom shell, the driving board is accommodated in the cavity and electrically connected to the driving board, the driving board is provided with a driving circuit, the driving circuit drives the lamp beads on the metal substrate to emit light, the fireproof L ED display screen comprises a L ED module, the lamp beads are arranged on the metal substrate through lamp driving separation, the driving board bearing the driving circuit is protected inside a L ED module, and therefore the surface material of the L ED module does not have flammability, and the purpose of improving fireproof performance is achieved.

Description

L ED module and fire-proof L ED display screen

Technical Field

The application relates to L ED shows the field, especially relates to a L ED module and fire prevention L ED display screen.

Background

L ED display screen is increasingly valued for fire protection, especially in airport, mall and subway applications, whereas in practice, the L ED display screen is not very fire-resistant.

L ED display screen mainly includes L ED module, box body structure, internal control circuit and several bold of power supply part, box body structure usually comprises metallic structure spare, the fire-proof ability is stronger, internal control circuit is protected in box body structure, can not receive the influence yet, and L ED module mainly includes PCB board, L ED lamp and three major components of construction external member, and L ED module's surface structure large tracts of land is exposed outside, fire-proof ability is very limited, the biggest problem lies in that the board itself of large-area PCB board does not accord with the fire-proof requirement of standard, the PCB board that usually adopts is FR-4 epoxy plate material, the PCB board after the shaping contains a large amount of organic resin material, this kind of material has the flammability, and release a large amount of heat when burning, thereby influence L ED display screen's fire-proof ability.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a L ED module and a fireproof L ED display screen to solve the problem that the conventional L ED display screen does not have strong fireproof capability due to the board limited by the PCB.

The application provides, in a first aspect, an L ED module including a lamp bead, a metal substrate, a bottom case, and a driving board,

the lamp bead array is arranged on the metal substrate;

the bottom shell is provided with a display surface and a back surface which are oppositely arranged, the metal substrate is fixed on the display surface, a first groove is formed in one side of the display surface of the bottom shell, the metal substrate covers the first groove, and a closed cavity is formed by the metal substrate and the bottom shell in a surrounding mode;

the drive board is accommodated in the cavity and is electrically connected to the metal substrate;

the driving board is provided with a driving circuit, and the driving circuit drives the lamp beads on the metal substrate to emit light.

In one embodiment, the bottom case is provided with a plurality of first fixing columns, and the metal substrate is fixed on the first fixing columns.

In one embodiment, a plurality of protruding columns are arranged on an end surface of the metal substrate close to the bottom shell, receiving holes are arranged in the first fixing columns, and at least part of the protruding columns are received in the receiving holes.

In one embodiment, a concave hole is disposed on the convex pillar, a through hole is disposed at the bottom of the accommodating hole, the through hole penetrates through the bottom case in the thickness direction, and the concave hole is communicated with the through hole.

In one embodiment, an end face of one end of the first fixing column, which is close to a metal substrate, is on the same horizontal plane with the display surface, and the metal substrate is assembled on the display surface; or

The end face of one end, close to the metal substrate, of the first fixing column is lower than the display face, the first fixing column is completely contained in the first groove, and at least part of the metal substrate is contained in the first groove.

In one embodiment, a through hole is formed in the driving plate, and a part of the first fixing column penetrates through the through hole.

In one embodiment, a first connector is disposed on an end surface of the metal substrate close to the bottom case, a second connector is disposed on the driving board, and the first connector and the second connector are fixedly inserted into each other, so that the driving board is fixedly connected to the metal substrate.

In one embodiment, a second fixing column is further arranged in the first groove, and the driving plate is fixed on the second fixing column.

In one embodiment, the metal substrates are provided in plurality, the metal substrates are electrically connected to the same driving board, and the metal substrates share the same driving board.

Above-mentioned L ED module, through setting up the lamp pearl array on metal substrate, set up drive circuit on the drive plate, thereby the drive plate is connected with the metal substrate electricity and is realized the drive, realized the separation of lamp drive, metal substrate surrounds formation an inclosed air with the drain pan, the drive plate is acceptd in the cavity, realize with external isolation, thereby, when the conflagration breaing out, can avoid drive plate and external fire source direct contact, avoid the drive plate to participate in the burning, the fire behavior of L ED module has been strengthened, simultaneously, the mode that sets up the drive plate alone, drive circuit need not to provide the lamp pearl solder joint, be favorable to drive circuit's design.

The application second aspect provides a fire prevention L ED display screen, including box frame and L ED module, L ED module is fixed in on the box frame, L ED module be above-mentioned arbitrary L ED module.

Because the box frame of fire prevention L ED display screen is mainly made by the panel beating material, and the drive plate of L ED module is built-in addition, has stronger fire behavior, therefore, fire prevention L ED display screen has good fire behavior.

Drawings

Fig. 1 is an exploded view of an L ED module according to an embodiment of the present disclosure;

fig. 2 is a schematic rear view of an L ED module according to an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a partial enlarged view of portion B of FIG. 3;

fig. 5 is a schematic structural diagram of a bottom chassis of an L ED module according to an embodiment of the present application;

fig. 6 is a schematic view of a matching structure of a bottom chassis and a driving board of an L ED module according to an embodiment of the present application.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

L ED module and fire prevention L ED display screen of each embodiment of this application, drive the separation through the lamp, set up the lamp pearl on metal substrate, bear drive circuit's drive plate and protected in the inside of L ED module to the surface material of L ED module does not have the flammability, in order to reach the purpose that promotes fire behavior.

The L ED module and the fireproof L ED display screen of the embodiments of the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 3, schematically illustrating a structure of an L ED module 10 according to an embodiment of the present disclosure, a L ED module 10 includes beads (not shown), a metal substrate 110, a bottom case 120, and a driving board 130, the bead array is disposed on the metal substrate 110, the metal substrate 110 is fixed on the bottom case 120 and surrounds the bottom case 120 to form a cavity, and the driving board 130 is disposed in the cavity.

For example, in a specific embodiment, the lamp beads adopt Mini L ED lamp beads packaged in a four-in-one mode.

The metal substrate 110 is made of metal or alloy, for example, in a specific embodiment, the metal substrate 110 may be an aluminum substrate or an aluminum alloy substrate. Of course, other metal materials are also possible.

Referring to fig. 1 and 4, the bead array is disposed on an end surface of the metal substrate 110 away from the bottom case 120, a plurality of protruding columns 112 may be disposed on an end surface of the metal substrate 110 close to the bottom case 120, and concave holes 112a are disposed on the protruding columns 112, so that the metal substrate 110 may be fixed to the bottom case 120 by a fastener cooperating with the concave holes 112a on the protruding columns 112. For example, the protruding columns 112 may be copper columns welded on the metal substrate 110, the concave holes 112a are threaded holes, and the fastening members may be screws, so that the metal substrate 110 may be fixed on the bottom case 120 by passing the screws through the bottom case 120 into the threaded holes.

The metal substrate 110 may be provided with a plurality of metal substrates 110 fixed on the bottom case 120. For example, in the embodiment shown in fig. 1, four metal substrates 110 are provided. Of course, the metal substrate 110 may be provided with only one piece for better sealing.

In one or more embodiments, the bottom case 120 is made of a metal material to facilitate heat conduction while enhancing fire protection of the bottom case 120.

Referring to fig. 5, the bottom case 120 has a display surface 121 and a back surface 123 disposed opposite to each other, the metal substrate 110 is fixedly mounted on the display surface 121, a first recess 120a is disposed on one side of the display surface 121 of the bottom case 120, the metal substrate 110 covers the first recess 120a, so that a closed cavity is formed by the metal substrate 110 and the bottom case, and the driving board 130 is accommodated in the cavity and electrically connected to the metal substrate 110.

The bottom casing 120 is provided with a plurality of first fixing posts 125, and the metal substrate 110 is fixed on the first fixing posts 125. For example, the first fixing column 125 is disposed corresponding to the protruding column 112, an accommodating hole 1251 is disposed in the first fixing column 125, and at least a portion of the protruding column 112 is accommodated in the accommodating hole 1251; the bottom of the receiving hole 1251 is provided with a through hole, the through hole penetrates through the bottom case 120 in the thickness direction, and the concave hole 112a is communicated with the through hole, so that the fastener can penetrate through the through hole to enter the receiving hole 1251 and be fixedly connected with the convex pillar 112, thereby fixing the metal substrate 110 to the bottom case 120.

In some embodiments, an end surface of the first fixing pillar 125 near one end of the metal substrate 110 is at the same level as the display surface 121 of the bottom chassis 120, so that the metal substrate 110 can be mounted on the display surface 121.

In other embodiments, an end surface of the first fixing post 125 near one end of the metal substrate 110 is lower than the display surface 121 of the bottom casing 120, so that the first fixing post 125 is completely received in the first recess 120a, and the metal substrate 110 is at least partially received in the first recess 120 a.

The metal substrate 110 is fixed by the first fixing posts 125, on one hand, the metal substrate 110 is positioned by the accommodating holes 1251 of the first fixing posts 125, and the accommodating holes 1251 of the first fixing posts 125 enable the metal substrate 110 and the bottom case 120 to be in a preset posture after being fixed, which is beneficial to balancing flatness differences and seam size differences of different metal substrates 110; on the other hand, a guide is provided for fixing the metal substrate 110 while restricting lateral displacement of the metal substrate 110.

Referring to fig. 4, in one or more embodiments, the through hole is a stepped hole, and includes a first hole segment 1253 and a second hole segment 1255, the first hole segment 1253 is connected to the second hole segment 1255, and the second hole segment 1255 is connected to the receiving hole 1251; the depth of the differently perforated first hole sections 1253 may be different to enable the first fixing posts 125 to accommodate different shapes of the rear surface 123 of the bottom case 120.

Referring to fig. 1 and 4, in one or more embodiments, a first connector 114 is disposed on an end surface of the metal substrate 110 close to the bottom case 120, a second connector 131 is disposed on the driving board 130, and the first connector 114 and the second connector 131 are inserted and fixed to each other, so that the driving board 130 is fixedly connected to the metal substrate 110. For example, the first connector 114 and the second connector 131 are board-to-board connectors to fix the driving board 130 through the metal base board 110.

Referring to fig. 1 and 6, in one or more embodiments, the driving board 130 may be further fixed by a first fixing column 125. For example, the driving board 130 may be provided with a through hole 130a, and a portion of the first fixing posts 125 passes through the through hole 130a, thereby limiting the displacement of the driving board 130 in a horizontal plane by the first fixing posts 125 and fixing the driving board 130 in a vertical direction by the first connector 114 and the second connector 131, thereby achieving two-dimensional fixation. By the assembling mode, the metal substrate 110 and the driving plate 130 can be detached together.

Referring to fig. 5, the bottom case 120 may further be provided with second fixing posts 127 in the first recess 120a, and the driving board 130 may be fixed on the second fixing posts 127, for example, screws pass through the driving board 130 and are in threaded connection with the second fixing posts 127, so that the driving board 130 is fixed on the plurality of second fixing posts 127.

Be provided with drive circuit on the drive plate 130, the lamp pearl on the drive circuit drive metal substrate 110 is luminous. In one or more embodiments, a plurality of metal substrates 110 are provided, and the plurality of metal substrates 110 are electrically connected to the same driving board 130, so that the plurality of metal substrates 110 share the same driving board 130. At this time, the driving board 130 may be fixed by the second fixing posts 127 to facilitate the assembly of the metal base plate 110 and the driving board 130.

For example, in the embodiment shown in fig. 1, four metal substrates 110 are provided, and the driving board 130 is disposed corresponding to the boundary of the four metal substrates 110, and is respectively and fixedly connected to the four metal substrates 110, and drives the light beads on the four metal substrates 110 to emit light. Therefore, the plurality of metal substrates 110 share the driving plate 130, the structure can be simplified, the cost is saved, meanwhile, the plurality of metal substrates 110 are all fixed with the driving plate 130, the four metal substrates 110 are indirectly fixed with each other through the driving plate 130, and the stability and the reliability of the structure are enhanced.

Above-mentioned L ED module 10, through setting up the lamp pearl array on metal substrate 110, set up drive circuit on drive plate 130, thereby drive plate 130 is connected with metal substrate 110 electricity and is realized the drive, the separation of lamp drive has been realized, metal substrate 110 surrounds formation an inclosed air with drain pan 120, drive plate 130 is acceptd in the cavity, realize the isolation with the external world, thereby, when the conflagration breaing out, can avoid drive plate 130 and external fire source direct contact, avoid drive plate 130 to participate in the burning, L ED module 10's fire behavior has been strengthened, simultaneously, with the mode that drive plate 130 set up alone, drive circuit need not to provide the lamp pearl solder joint, be favorable to drive circuit's design.

An embodiment of this application still provides a fire prevention L ED display screen, and fire prevention L ED display screen includes box frame and L ED module, and the L ED module is fixed in on the box frame, the L ED module be above-mentioned any embodiment L ED module 10.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An L ED module is characterized by comprising a lamp bead, a metal substrate, a bottom shell and a driving plate, wherein,

the lamp bead array is arranged on the metal substrate;

2. The L ED module according to claim 1, wherein the bottom housing is provided with a plurality of first fixing posts, the metal substrate is fixed on the first fixing posts.

3. The L ED module according to claim 2, wherein the metal substrate has a plurality of posts disposed on an end surface thereof adjacent to the bottom housing, and the first fixing posts have receiving holes disposed therein, the posts being at least partially received in the receiving holes.

4. The L ED module of claim 3, wherein the protrusion has a recess, and the bottom of the receptacle has a through hole extending through the bottom housing in the thickness direction, the recess communicating with the through hole.

5. The L ED module of claim 2, wherein the end surface of the first fixing post near one end of a metal substrate is at the same level as the display surface on which the metal substrate is mounted, or

6. The L ED module of claim 2, wherein the drive plate is provided with a through hole through which a portion of the first fixing posts pass.

7. The L ED module according to claim 1 or 6, wherein a first connector is disposed on an end surface of the metal substrate near the bottom housing, and a second connector is disposed on the driving board, and the first connector and the second connector are fixed to each other by plugging so that the driving board is fixedly connected to the metal substrate.

8. The L ED module of claim 1, wherein the first recess further has a second fixed post disposed therein, the drive plate being fixed to the second fixed post.

9. The L ED module according to claim 1 or 8, wherein the metal substrate is provided with a plurality of metal substrates, a plurality of the metal substrates are electrically connected to the same driving board, and a plurality of the metal substrates share the same driving board.

10. A fire-proof L ED display screen, comprising a box frame and a L ED module, wherein the L ED module is fixed on the box frame, and the L ED module is the L ED module of any one of claims 1-9.