LED display module

Abstract

The utility model relates to an LED (light-emitting diode) display module, which comprises a shell and is characterized in that the shell comprises a surface cover and a bottom shell, an installation cavity is formed between the surface cover and the bottom shell, a plurality of light holes and light reflecting cavities in one-to-one correspondence with the light holes are respectively arranged on the surface cover in a penetrating manner, and an LED component is arranged in the installation cavity. The surface cover is provided with a first retaining wall along the contour edge, the bottom shell is provided with a second retaining wall along the contour edge, the inner side wall of the first retaining wall abuts against the outer side wall of the second retaining wall in a matched mode, grooves are formed in the inner walls of the two sides of the first retaining wall in a concave mode, U-shaped inserts are rotationally arranged in the grooves, and clamping grooves corresponding to the U-shaped inserts are formed in the outer walls of the two sides of the second retaining wall in a concave mode. And the U-shaped insert can rotationally protrude out of the outer side of the groove and is matched with the clamping groove, at the moment, a filling cavity is formed between the U-shaped insert and the groove, and epoxy resin can be injected into the filling cavity.

Description

Technical Field

[0001] This utility model specifically relates to an LED display module. Background Technology

[0002] LED display modules, also known as LED digital tubes, are semiconductor light-emitting devices. The basic unit is a light-emitting diode (LED). By inputting a relative current through different pins, the LED lights up to display numbers. They are widely used in home appliances such as air conditioners, water heaters, and refrigerators.

[0003] LED digital tube packaging technology is also constantly developing. The traditional LED digital tube packaging structure uses an integral potting technology, which requires a large amount of colloid, resulting in higher costs and making the LED digital tube relatively heavy. Utility Model Content

[0004] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes an LED display module.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An LED display module includes a housing, comprising a front cover and a bottom cover, with a mounting cavity formed between the front cover and the bottom cover. The front cover has a plurality of light-transmitting holes and corresponding reflective cavities. An LED component is disposed within the mounting cavity. The front cover has a first baffle wall along its contour edge, and the bottom cover has a second baffle wall along its contour edge. The inner sidewall of the first baffle wall and the outer sidewall of the second baffle wall abut against each other. The inner walls on both sides of the first baffle wall have recessed grooves, within which U-shaped inserts are rotatably disposed. The outer walls on both sides of the second baffle wall have recessed slots corresponding to the U-shaped inserts. The U-shaped inserts can rotatably protrude outward from the outside of the grooves and engage with the slots. At this time, a filling cavity is formed between the U-shaped inserts and the grooves, into which epoxy resin can be injected.

[0007] In one embodiment, the LED component includes a PCB board disposed on one side of the bottom shell and located in the mounting cavity, the PCB board having a plurality of LED chips corresponding to a plurality of light-transmitting holes, and pins extending from the other side of the bottom shell.

[0008] In one embodiment, an annular flange is provided on one side of the cover and inside the mounting cavity, and a sealing groove is formed between the annular flange and the first baffle wall, and one end of the second baffle wall is fitted into the sealing groove.

[0009] In one embodiment, a sealing ring is fitted into the sealing groove, and one end of the second baffle wall abuts against the sealing ring.

[0010] In one embodiment, a number of light-transmitting holes are arranged and combined to form a shape like a Chinese character 'Ri' (日), 'N', 'Mi' (米), or '+1'.

[0011] In one embodiment, the mating surface of the card slot for abutting against the U-shaped insert is an inclined surface.

[0012] In one embodiment, the width of the groove is equal to the width of the card slot.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In the present utility model, the second retaining wall of the bottom case is fitted and embedded inside the first retaining wall of the face cover to form a positioning and sealing connection between the bottom case and the face case. Then, the U-shaped insert inside the first retaining wall rotates into the card slot of the second retaining wall, so as to form a filling cavity between the U-shaped insert and the groove. At this time, epoxy resin is filled in the filling cavity and the epoxy resin is cured. Furthermore, the U-shaped insert maintains a connection state of pressing against the inside of the card slot, thereby maintaining the integral connection and fixation of the face cover and the bottom case, and effectively reducing the amount of filling colloid used. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic cross-sectional structure view of an LED display module in the present utility model;

[0016] Figure 2 is one of the schematic three-dimensional structure views of an LED display module in the present utility model;

[0017] Figure 3 is another schematic three-dimensional structure view of an LED display module in the present utility model;

[0018] Figure 4 is the third schematic three-dimensional structure view of an LED display module in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following specific implementation content provides multiple different embodiments or examples for implementing the present utility model. Of course, these are only embodiments or examples and are not intended to be restrictive. Additionally, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the present utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0020] Such as Figures 1-4An LED display module as shown includes a housing, and the housing includes a face cover 1 and a bottom case 2. An installation cavity is formed between the face cover 1 and the bottom case 2. A plurality of light-transmitting holes 3 and reflecting cavities 4 corresponding to the light-transmitting holes 3 one by one penetrate through the face cover 1 respectively. An LED component 5 is arranged in the installation cavity. The face cover 1 is provided with a first stop wall 6 along the contour edge, and the bottom case 2 is provided with a second stop wall 7 along the contour edge. The inner side wall of the first stop wall 6 is in mating abutment with the outer side wall of the second stop wall 7. The inner walls on both sides of the first stop wall 6 are recessed with grooves 8, and a U-shaped insert 9 is rotatably arranged in the grooves 8. The outer walls on both sides of the second stop wall 7 are recessed with clamping grooves 10 corresponding to the U-shaped insert 9. The U-shaped insert 9 can rotate and protrude outside the groove 8 and cooperate with the clamping groove 10. At this time, a filling cavity 11 is formed between the U-shaped insert 9 and the groove 8, and epoxy resin can be injected into the filling cavity 11.

[0021] Specifically, the second stop wall of the bottom case is fitted and embedded inside the first stop wall of the face cover to form a positioning and sealing connection between the bottom case and the face case. Then, the U-shaped insert inside the first stop wall is rotated into the clamping groove of the second stop wall, so that a filling cavity is formed between the U-shaped insert and the groove. At this time, epoxy resin is placed in the filling cavity and the epoxy resin is cured. Furthermore, the U-shaped insert remains in a connection state of pressing against the clamping groove, so as to maintain the integral connection and fixation of the face cover and the bottom case, effectively reducing the amount of filling colloid. Only the colloid needs to be sealed in the filling cavity and the light-transmitting holes, and a light diffusing agent is added to the colloid.

[0022] Furthermore, the LED component includes a PCB board 12 arranged on one side of the bottom case 2 and located in the installation cavity. The PCB board 12 is provided with a plurality of LED chips (not marked in the figure) corresponding to the plurality of light-transmitting holes 3, and pins 13 extend from the other side of the bottom case 2. The electrical connection between the PCB board, the LED chips and the pins is a relatively mature prior art, and its structural principle will not be described in detail here.

[0023] Furthermore, a ring-shaped flange 14 is arranged on one side of the face cover 1 and located in the installation cavity. A sealing groove 15 is formed between the ring-shaped flange 14 and the first stop wall 6, and one end of the second stop wall 7 is fitted and inserted into the sealing groove 15. Furthermore, through the ring-shaped flange and the sealing groove, the sealing performance between the first stop wall and the second stop wall is effectively increased.

[0024] Furthermore, a sealing ring (not marked in the figure) is fitted and embedded in the sealing groove 15, and one end of the second stop wall 7 presses against the sealing ring (not marked in the figure). Furthermore, through the sealing ring, the sealing performance between the first stop wall and the second stop wall is effectively increased.

[0025] Furthermore, the plurality of light-transmitting holes 3 are arranged and combined to form a "day" shape, an "N" shape, a "rice" shape or a "+1" shape. Furthermore, different display patterns can be formed according to the light transmission of different LED chips.

[0026] Furthermore, the mating surface of the slot 10 that abuts against the U-shaped insert 9 is an inclined surface. This effectively increases the contact area between the U-shaped insert and the slot.

[0027] Furthermore, the width of the groove 8 is equal to the width of the slot 10. The width of the U-shaped insert is the same as the groove, thereby reducing the sidewall gap between the U-shaped insert and the slot.

[0028] Based on the accompanying drawings and the foregoing display and description of the basic principles, main features, and advantages of this utility model, those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An LED display module, comprising a housing, characterized in that: The housing includes a face cover (1) and a bottom case (2). An installation cavity is formed between the face cover (1) and the bottom case (2). A plurality of light-transmitting holes (3) and corresponding light-reflecting cavities (4) corresponding to the light-transmitting holes (3) penetrate through the face cover (1) respectively. An LED component (5) is arranged in the installation cavity. The face cover (1) is provided with a first stop wall (6) along the contour edge, and the bottom case (2) is provided with a second stop wall (7) along the contour edge. The inner side wall of the first stop wall (6) is in mating abutment with the outer side wall of the second stop wall (7). The inner walls on both sides of the first stop wall (6) are recessed with grooves (8), and a U-shaped insert (9) is rotatably arranged in the grooves (8). The outer walls on both sides of the second stop wall (7) are recessed with clamping grooves (10) corresponding to the U-shaped insert (9). The U-shaped insert (9) can rotate and protrude outside the groove (8) and cooperate with the clamping groove (10). At this time, a filling cavity (11) is formed between the U-shaped insert (9) and the groove (8), and epoxy resin can be injected into the filling cavity (11).

2. The LED display module according to claim 1, characterized in that: The LED component includes a PCB board (12) arranged on one side of the bottom case (2) and located in the installation cavity. The PCB board (12) is provided with a plurality of LED chips corresponding to the plurality of light-transmitting holes (3). A pin (13) extends from the other side of the bottom case (2).

3. The LED display module according to claim 2, characterized in that: A ring-shaped flange (14) is arranged on one side of the face cover (1) and located in the installation cavity. A sealing groove (15) is formed between the ring-shaped flange (14) and the first stop wall (6). One end of the second stop wall (7) is inserted into the sealing groove (15) in a matching manner.

4. An LED display module according to claim 3, characterized in that: A sealing ring is fitted and embedded in the sealing groove (15), and one end of the second stop wall (7) presses against the sealing ring.

5. An LED display module according to claim 1, characterized in that: The plurality of light-transmitting holes (3) are arranged and combined to form a "day" shape, an "N" shape, a "rice" shape or a "+1" shape.

6. An LED display module according to claim 1, characterized in that: The mating surface of the clamping groove (10) for abutting against the U-shaped insert (9) is an inclined surface.

7. An LED display module according to claim 1, characterized in that: The width of the groove (8) is equal to the width of the clamping groove (10).

Images