Dot-matrix LED lamp box

Abstract

The utility model discloses a dot-matrix LED lamp box in the field of lamp boxes, which comprises a hollow frame and a bottom plate, the bottom plate is fixedly mounted at the bottom of the frame, a circuit board and a reflecting plate which are arranged on the inner side of the frame are respectively mounted on the bottom plate, a plurality of LED lamps distributed in a matrix structure are connected onto the circuit board, the reflecting plate is positioned above the circuit board, and the LED lamps are connected with the reflecting plate. The reflecting plate is provided with a plurality of conical hole sites used for containing and upwards ejecting single LED lamps, the ends, with small openings, of the conical hole sites face the circuit board, and the number and the positions of the conical hole sites correspond to those of the LED lamps in a one-to-one mode; a limiting groove is formed in the inner wall of the end, away from the bottom plate, of the frame, a light guide plate which covers all the LED lamps and is used for evenly dispersing light is installed in the limiting groove, and the horizontal plane of the light guide plate is flush with the outer edge of the frame. A picture layer flatly laid on the light guide plate is installed on the frame, and sealing rubber strips used for being clamped into the clamping grooves to be fixed are arranged on the periphery of the picture layer.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of lamp box, concretely to a dot matrix type LED lamp box. BACKGROUND

[0002] In the field of commercial display, advertising and interior decoration, LED lamp box gradually becomes the mainstream display tool with its high brightness, energy saving and environmental protection, easy to replace display content and other advantages. However, with the intensification of market competition and the improvement of consumer aesthetic demand, higher requirements are put forward for the performance and design of LED lamp box.

[0003] However, the traditional LED lamp box has obvious shortcomings in light uniformity. Since the LED lamp is usually distributed in point or line shape, direct irradiation can easily form uneven spots or stripes on the surface of the lamp box, affecting the visual effect.

[0004] In addition, the design of the reflector plate of the traditional LED lamp box is also relatively simple, usually only a flat metal plate or plastic plate, which is used to reflect the light of the LED lamp. This design often cannot fully utilize the light, causing waste of light and glare phenomenon. At the same time, the cooperation between the reflector plate and the LED lamp is not close enough, which also affects the uniformity and brightness of the light.

[0005] Finally, in the picture layer aspect, the traditional LED lamp box usually adopts screw fixing or pasting method to directly install the picture layer on the lamp box frame, and the picture layer cannot be supported behind. This installation method is not only cumbersome to operate, but also prone to problems such as picture layer loosening, deformation or sagging after long-term use, which affects the display effect and service life. UTILITY MODEL CONTENT

[0006] In order to overcome the shortcomings of the prior art, the utility model provides a dot matrix type LED lamp box, which can effectively solve the technical problems of insufficient brightness of the lamp box and sagging of the picture installed on the surface.

[0007] The utility model solves the technical problems by adopting the following technical scheme:

[0008] A dot matrix type LED lamp box, comprising a frame and a bottom plate of hollow structure, the bottom plate is fixedly installed at the bottom of the frame, the bottom plate is respectively installed with a circuit board and a reflector plate arranged on the inner side of the frame, the circuit board is connected with a plurality of LED lamps distributed in matrix structure, the reflector plate is located above the circuit board, and a plurality of conical hole positions for accommodating and upwardly ejecting a single LED lamp are formed in the reflector plate, the smaller end of the conical hole position is directed to the circuit board, and the number and position of the conical hole position correspond to the LED lamp one by one.

[0009] The inner wall of the frame far from the bottom plate is provided with a limiting groove, a light guide plate for uniformly dispersing light is installed in the limiting groove, the horizontal plane of the light guide plate is aligned with the outer edge of the frame, the end of the frame far from the bottom plate is also provided with a clamping groove distributed on the periphery of the limiting groove, and a picture layer is installed on the frame and laid on the light guide plate, and a sealing rubber strip is arranged around the picture layer and used for clamping into the clamping groove and fixing.

[0010] Further, a plurality of bosses for supporting the circuit board are arranged on the bottom plate, a plurality of partition blocks corresponding to the positions of the bosses are arranged between the light reflection plate and the circuit board, and a first locking piece is inserted into the light reflection plate and locked with the bosses and the circuit board.

[0011] Further, a power supply connected with the circuit board is installed on the inner side of the frame, and a lead hole for leading out the power supply connection end to the outside is formed on the bottom plate.

[0012] Further, a plurality of grooves are formed on the light guide plate, and a second locking piece for locking and fixing with the bottom of the limiting groove is inserted into the groove.

[0013] Further, a foot stand for fixing installation is connected to one side of the frame, and a plurality of heat dissipation holes for heat dissipation are formed on the side of the frame close to the foot stand.

[0014] Compared with the prior art, the LED lamp box has the advantages that:

[0015] The LED lamp box has the advantages that: the light reflection plate and the light guide plate are used in cooperation in the lamp box, the light of the LED lamp is uniformly dispersed, the conical hole position for accommodating the LED lamp is formed on the light reflection plate, the refraction of the light of the LED lamp is improved, the brightness of the lamp box is improved, the picture layer is laid on the surface of the light guide plate during installation, the phenomenon of concave after long-time use of the picture layer is effectively prevented, and the stability of use is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure after the picture layer is disassembled of the embodiment of the utility model;

[0018] Figure 3 It is the embodiment of the utility model Figure 2 A schematic diagram of the structure of part A of the embodiment of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure after the picture layer and the light guide plate are disassembled of the embodiment of the utility model;

[0020] Figure 5The utility model discloses an embodiment frame, bottom plate and foot base connection structure schematic diagram.

[0021] Figure 6 The utility model discloses an embodiment frame, bottom plate and foot base connection structure schematic diagram.

[0022] Figure 7 The utility model discloses an embodiment Figure 6 The middle B part structure amplification schematic diagram.

[0023] Figure 8 The utility model discloses an embodiment frame, bottom plate and foot base connection structure schematic diagram.

[0024] Mark in drawing:

[0025] 1-frame, 2-bottom plate, 3-circuit board, 4-reflective plate, 5-LED lamp, 6-light guide plate, 7-picture layer, 8-first locking piece, 9-power supply, 10-second locking piece, 11-foot base;

[0026] 101-limit slot, 102-clamping groove, 103-heat dissipation hole;

[0027] 201-tumulus, 202-separate block, 203-lead hole;

[0028] 401-tapered hole site;

[0029] 601-groove;

[0030] 701-sealing rubber strip. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in 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 the person skilled in the art without creative labor fall within the scope of the utility model.

[0032] As Figures 1-8 Indicated, the utility model provides a dot matrix type LED lamp box, and the structure of outer layer mainly includes the frame 1 and bottom plate 2 of hollow structure, and the bottom plate 2 is fixedly installed at the bottom of frame 1. Among them, frame 1 adopts light and solid aluminum alloy material to make, has hollow structure to reduce weight and enhance heat dissipation performance. The bottom plate 2 is made of high-strength plastic or metal, and the structure is stable.

[0033] A circuit board 3 and a reflector 4 are respectively mounted on the base plate 2, located inside the frame 1, with the reflector 4 positioned above the circuit board 3. Multiple LEDs 5 are distributed in a matrix on the surface of the circuit board 3, each LED being precisely soldered to the circuit board to ensure the stability and reliability of the electrical connection.

[0034] The reflector 4 is designed with multiple tapered holes 401, each precisely corresponding to an LED 5. The LED 5 is housed within the corresponding tapered hole 401 and protrudes upwards, facilitating light dispersion. The tapered hole 401 design helps focus light, improves brightness, and ensures uniform light distribution on the light guide plate 6. The two ends of the tapered hole 401 have unequal opening sizes, with the smaller opening facing the circuit board 3, while the larger opening faces the end of the LED 5 that disperses light. Because the LED 5 protrudes from the reflector 4, it can not only reflect light using the surface of the reflector 4, but also reflect light emitted from the unprotruding parts of the LED 5 through the inclined surface of the inner wall of the tapered hole 401, thus improving overall brightness.

[0035] When the circuit board 3 and the reflector 4 are installed on the base plate 2, in order to more easily fix the positions of the circuit board 3 and the reflector 4, a number of protrusions 201 are provided on the base plate to support the circuit board 3, and a spacer 202 corresponding to the position of the protrusion 201 is provided between the reflector 4 and the circuit board 3 to ensure an appropriate gap between the circuit board and the reflector 4. Then, a number of first locking members 8 are inserted into the surface of the reflector 4 to lock and fix it. When the first locking member 8 is inserted from the surface of the reflector 4, it simultaneously passes through the spacer 202 and the circuit board 3 to lock and fix it to the protrusion 201.

[0036] A light guide plate 6 and a display layer 7 are respectively installed at the end of the frame 1 away from the base plate 2. The light guide plate 6 evenly disperses the light emitted by the LED lights 5 to display the pattern on the display layer 7. To better install and fix the position of the light guide plate 6, a limiting groove 101 is provided on the inner wall of the end of the frame 1 away from the base plate 2. The light guide plate 6 is installed in the limiting groove 101 and covers all the LED lights 5. At this time, the light guide plate 6 can evenly disperse the light, ensuring that the light on the display layer 7 is evenly distributed. In order to make the display layer 7 flatter, the horizontal plane of the light guide plate 6 after installation is aligned with the outer edge of the frame 1, and several grooves 601 are also provided on the light guide plate 6 for inserting the second locking member 10 and locking it with the bottom of the limiting groove 101 to prevent the light guide plate from loosening.

[0037] Additionally, at the end of the frame 1 furthest from the base plate 2, there are slots 102 distributed around the periphery of the limiting groove 101. The image layer 7 is laid flat on the light guide plate 6 and is made of high-strength, deformation-resistant material to ensure that the image does not sag during long-term use. Sealing strips 701 are provided around the image layer 7 to secure it within the slots 102, protecting internal components and preventing dust and moisture intrusion. It should be noted that the image layer 7 can be made of film or fabric materials.

[0038] To ensure power supply to the inside of the light box, a power supply unit 9 is installed on the inside of the frame 1. This power supply unit 9 is connected to the circuit board 3 to provide a stable power supply. A lead wire hole 203 is also provided on the base plate 2 for leading out the power terminal of the power supply unit 9, facilitating connection to an external power source.

[0039] One side of the frame 1 is connected to a foot 11 for mounting and fixing. The light box can be mounted and fixed in different positions through the foot 11. Several heat dissipation holes 103 are provided on the side of the frame 1 near the foot 11 to promote internal air circulation, effectively dissipate heat, and ensure the long-term stable operation of the LED light box.

[0040] Compared with traditional technologies, the LED light box provided by this technical solution effectively achieves uniform dispersion of light from the LED lamps 5 through the combined use of a reflector 4 and a light guide plate 6 inside the light box. The conical holes 401 on the reflector 4 to accommodate the LED lamps 5 can improve the refraction of light from the LED lamps 5 and increase the brightness of the light box. In addition, the image layer 7 is installed flat on the surface of the light guide plate 6, which effectively prevents the image layer 7 from sinking after long-term use and improves the stability of use.

[0041] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dot-matrix LED lightbox, comprising a hollow frame and a base plate, wherein the base plate is fixedly installed at the bottom of the frame, characterized in that: The base plate is respectively equipped with a circuit board and a reflector located inside the frame. The circuit board is connected to a plurality of LED lights distributed in a matrix structure. The reflector is located above the circuit board and has a plurality of conical holes for accommodating and pushing out individual LED lights. The smaller end of the conical hole faces the circuit board. The number and position of the conical holes correspond one-to-one with the LED lights. The inner wall of the frame away from the base plate is provided with a limiting groove. A light guide plate covering all LED lights is installed in the limiting groove to evenly disperse the light. The horizontal plane of the light guide plate is aligned with the outer edge of the frame. The frame away from the base plate is also provided with a slot distributed around the limiting groove. A screen layer is installed on the frame and laid flat on the light guide plate. Sealing strips are provided around the screen layer to be fixed in the slots.

2. The dot matrix LED light box according to claim 1, characterized in that: The base plate is provided with a number of protrusions for supporting the circuit board. A number of spacers corresponding to the positions of the protrusions are provided between the reflector and the circuit board. A first locking member is inserted into the reflector and locked to the protrusions by the spacers and the circuit board.

3. A dot matrix LED light box according to claim 1, characterized in that: A power supply connected to a circuit board is installed on the inner side of the frame, and a lead hole for leading out the power supply terminal is provided on the base plate.

4. A dot matrix LED light box according to claim 1, characterized in that: The light guide plate has several grooves, and a second locking member is inserted into the groove for locking and fixing to the bottom of the limiting groove.

5. A dot matrix LED light box according to any one of claims 1-4, characterized in that: One side of the frame is connected to a foot for mounting and fixing, and the side of the frame near the foot has several heat dissipation holes for heat dissipation.

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