CN203562151U

CN203562151U - Waterproof system for LED display screen module

Info

Publication number: CN203562151U
Application number: CN201320628336.3U
Authority: CN
Inventors: 齐泽明; 张益来
Original assignee: SHENZHEN LIGHTKING TECHNOLOGY Co Ltd
Current assignee: SHENZHEN LIGHTKING TECHNOLOGY Co Ltd
Priority date: 2013-10-11
Filing date: 2013-10-11
Publication date: 2014-04-23
Anticipated expiration: 2023-10-11

Abstract

The utility model discloses a waterproof system for an LED display screen module, which comprises a bottom shell, a silica gel pad and a box body, wherein the right side of the bottom shell is used for mounting the LED display screen module; the bottom surface of the bottom shell faces the box body and the bottom shell is mounted on the box body; the bottom shell comprises a first through hole; except for the first through hole, the other parts of the bottom shell are enclosed; the first through hole is used for enabling a wire to get through, and the LED display screen module is electrically connected with the box body through the wire; a bounding wall higher than the bottom surface of the bottom shell is arranged around the first through hole; a second through hole is formed in the silica gel pad; a surrounding edge higher than the bottom surface of the silica gel pad is arranged around the second through hole; the second through hole is matched with the bounding wall and sleeved upon the bounding wall; a third through hole is formed in a position, corresponding to the bounding wall, of the box body; the surrounding edge is arranged in the third through hole and matched with the third through hole. According to the utility model, the waterproof effect between the LED display screen module and the box body is better, and the accuracy requirements on the hardness of the bottom shell, the hardness of the box body, and the flatness of the box body are less.

Description

A kind of waterproof system for LED display module

Technical field

The utility model relates to waterproof type between LED display module and casing, relates in particular to a kind of waterproof system for LED display module.

Background technology

As shown in Figure 1, waterproof between existing LED display module and casing is normally fixed on LED display module 1 front of drain pan 2, between the face contacting with casing 4 at drain pan 2 again, pack silica gel ring 3 into, utilize the built-in fitting on screw locking LED display module to make its distortion reach water-proof function from front extruding silica gel ring 3, the power that this waterproof type requires to lock screw enough could produce greatly forward extrusion power is out of shape silica gel ring, because screw locking power is large, time has been grown and has easily made the plastic cement generation cracking of built-in fitting surrounding bad, and between this LED display module and casing, positive extruding silica gel ring reaches the mode of water-proof function, casing and LED display module opposite position need leave larger hole, require the hardness of LED display module extruding silica gel ring face to want large, it is large that the hardness of casing stress surface is also wanted, sometimes also need to increase reinforcement and can make all energy stress deformations of the whole circle of silica gel ring, flatness accuracy requirement to casing surface of contact is tighter, need be less than the stressed deflection of its silica gel ring, otherwise be difficult to reach waterproof effect.

Summary of the invention

Technical problem to be solved in the utility model is: the defect existing for overcoming prior art, the utility model provides a kind of waterproof system for LED display module, waterproof effect between LED display module and casing is better, and less to the hardness of the hardness of drain pan and casing and flatness accuracy requirement.

Technical matters of the present utility model is solved by the following technical programs:

For a waterproof system for LED display module, comprise drain pan, silicagel pad and casing, the front of described drain pan is used for installing LED display module, and the bottom surface of described drain pan is arranged on described casing towards described casing; Described drain pan comprises the first through hole, other parts of described drain pan except described the first through hole are sealed, described the first through hole passes through for wire that LED display module is electrically connected to casing, in the surrounding of described the first through hole, is provided with the enclosure wall higher than the bottom surface of described drain pan; Described silicagel pad is provided with the second through hole, in the surrounding of described the second through hole, is provided with the surrounding edge higher than the bottom surface of described silicagel pad, and described the second through hole coordinates with described enclosure wall, is sheathed on outside described enclosure wall; On described casing, the position of corresponding described enclosure wall is provided with third through-hole, and described surrounding edge is placed in described third through-hole, coordinates with described third through-hole.

Preferably, be also provided with built-in fitting on described drain pan, described drain pan is fixedly connected with by described built-in fitting with casing.

Preferably, described the first through hole is near the edge setting of described drain pan.

Preferably, on the bottom surface of described silicagel pad, be also provided with some projections, on described casing, be also provided with the cavity coordinating with described projection accordingly.

Preferably, described silicagel pad forms by injection mo(u)lding.

The utility model compared with prior art its beneficial effect is: owing to adopting above technical scheme, the surrounding edge of silicagel pad is sheathed on outside the enclosure wall on drain pan and surrounding edge is pressed in the third through-hole on casing, surrounding edge in third through-hole on casing and the enclosure wall of drain pan extruding silicagel pad makes its distortion, thereby make to seal between LED display module and casing, determined to compare by the positive extruding of the torsion strength of locking drain pan screw with the sealing of existing casing dress silica gel ring, the side extruding force that silicagel pad of the present utility model is subject between the third through-hole on enclosure wall and casing reaches water-tight, waterproof effect is better, and the enclosure wall hardness on drain pan enough makes silicagel pad distortion, the size design of the dimensional tolerence of silicagel pad and casing perforate is reasonable, less to the hardness in the hardness of drain pan and casing front and flatness accuracy requirement.

Accompanying drawing explanation

Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram of LED display module waterproof system in prior art;

Fig. 2 is the STRUCTURE DECOMPOSITION schematic diagram of the waterproof system for LED display module of an embodiment of the utility model;

Fig. 3 is the sectional structure schematic diagram after the waterproof system of Fig. 2 is assembled into one;

Fig. 4 is the decomposing schematic representation of Fig. 3;

Fig. 5 is the elevational schematic view of the silicagel pad in Fig. 4;

Fig. 6 is that the master of the drain pan in Fig. 2 looks schematic diagram;

Fig. 7 is the A-A cross-sectional schematic of Fig. 6;

Fig. 8 is the B-B cross-sectional schematic of Fig. 6.

Embodiment

Below in conjunction with embodiment and contrast accompanying drawing the utility model is described in further detail.

The utility model provides a kind of waterproof system for LED display module, in one embodiment, as shown in Fig. 2～8, comprise drain pan 5, silicagel pad 6 and casing 7, the front of drain pan 5 is used for installing LED display module, and the bottom surface of drain pan 5 is arranged on casing 7 towards casing 7; Drain pan 5 comprises the first through hole 51, and other parts of drain pan except the first through hole 51 are sealed, and the first through hole 51 is for LED display module is passed through with the wire that casing 7 is electrically connected to, and in the surrounding of the first through hole 51, is provided with the enclosure wall 52 higher than the bottom surface of drain pan; Silicagel pad 6 is provided with the second through hole 61, and surrounding edge 62, the second through holes 61 that are provided with higher than the bottom surface of silicagel pad 6 in the surrounding of the second through hole 61 coordinate with enclosure wall 52, are sheathed on outside enclosure wall 52; On casing 7, the position of corresponding enclosure wall 52 is provided with third through-hole 71, and surrounding edge 62 is placed in third through-hole 71, coordinates with third through-hole 71.

On drain pan 5, be also provided with built-in fitting (not shown), described drain pan 5 is fixedly connected with by described built-in fitting with casing 7; The first through hole 51 is near the edge setting of drain pan 5; On the bottom surface of silicagel pad 6, be also provided with some projections 63, corresponding, on casing 7, be also provided with the cavity 72 coordinating with projection 63, during installation, projection 63 is put into cavity 72, can more guarantee that silicagel pad can not become flexible.

Silicagel pad 6 forms by injection mo(u)lding, owing to a plurality of LED display modules being generally installed on a casing to form a large LED display, when actual design silicagel pad, two of left and right the second through hole and corresponding surrounding edge can be set in silicagel pad, for two the LED display modules in left and right on casing, more convenient when producing and assemble silicagel pad, than saving many resources costss and human cost for the silica gel ring of existing casing and LED display module waterproof, being shown in Fig. 2 and Fig. 5 designed the silicagel pad of two the second through holes and corresponding surrounding edge.

In the utility model, because drain pan is provided with the first through hole, other parts except the first through hole are sealed, LED display module place is installed on casing and can only opens the corresponding hole of enclosure wall individual and on drain pan, the gauge of silicagel pad can be controlled by injection moulding machine, to can be good at controlling the tolerance of its size, as shown in Figure 4, the size of the third through-hole on casing (D size) machining precision can be controlled by numerically-controlled machine, size (the B of the enclosure wall on drain pan (A size) and silicagel pad, C and E size) precision can be controlled at by mold injection ± 0.1mm, wherein, the A size of enclosure wall and the C dimensional fits of silicagel pad, A is a bit larger tham C, the B size of silicagel pad and the D dimensional fits of third through-hole, D can be a bit larger tham B, also can equal B, as long as guarantee that the surrounding edge 62 of silicagel pad can pack in third through-hole 71, the E size of silicagel pad is distortion size, be ± 0.1mm of the tolerance of size is advisable.

During installation, silicagel pad is enclosed within on enclosure wall, in the third through-hole of malleation inlet body (install power thrusts the vertical direction of arrow) as shown in Figure 3, thereby being subject to the side extruding force (the side extruding force that silicagel pad the is subject to horizontal direction of arrow as shown in Figure 3) of side inwall between enclosure wall on drain pan and the third through-hole on casing, the surrounding edge of silicagel pad reaches the airtight effect of leaking of preventing.

Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, make without departing from the concept of the premise utility some substituting or obvious modification, and performance or purposes identical, all should be considered as belonging to protection domain of the present utility model.

Claims

1. for a waterproof system for LED display module, it is characterized in that: comprise drain pan, silicagel pad and casing, the front of described drain pan is used for installing LED display module, the bottom surface of described drain pan is arranged on described casing towards described casing;

Described drain pan comprises the first through hole, other parts of described drain pan except described the first through hole are sealed, described the first through hole passes through for wire that LED display module is electrically connected to casing, in the surrounding of described the first through hole, is provided with the enclosure wall higher than the bottom surface of described drain pan;

Described silicagel pad is provided with the second through hole, in the surrounding of described the second through hole, is provided with the surrounding edge higher than the bottom surface of described silicagel pad, and described the second through hole coordinates with described enclosure wall, is sheathed on outside described enclosure wall;

On described casing, the position of corresponding described enclosure wall is provided with third through-hole, and described surrounding edge is placed in described third through-hole, coordinates with described third through-hole.

2. waterproof system as claimed in claim 1, is characterized in that: on described drain pan, be also provided with built-in fitting, described drain pan is fixedly connected with by described built-in fitting with casing.

3. waterproof system as claimed in claim 1, is characterized in that: described the first through hole is near the edge setting of described drain pan.

4. waterproof system as claimed in claim 1, is characterized in that: on the bottom surface of described silicagel pad, be also provided with some projections, accordingly, be also provided with the cavity coordinating with described projection on described casing.

5. waterproof system as claimed in claim 1, is characterized in that: described silicagel pad forms by injection mo(u)lding.