Area light source light guide plate assembly

Abstract

The utility model discloses an area light source light guide plate assembly which comprises a plurality of supporting transverse plates and a plurality of supporting vertical plates, the supporting transverse plates and the supporting vertical plates define an outer frame, glue is coated on the supporting transverse plates, the back face of a light guide plate is bonded on the supporting transverse plates through the glue, the side edge of the light guide plate makes contact with the supporting vertical plates, and the side edge of the light guide plate makes contact with the supporting vertical plates. A positioning and fixing assembly is arranged on the supporting main plate and comprises a clamping block and a top bead, the clamping block is located above the top bead, the clamping block and the top bead are both telescopically connected to the supporting vertical plate, the bottom face of the clamping block is tightly attached to the surface of the light guide plate, and the top bead abuts against the side edge of the light guide plate. Due to the fact that the distance between the lower surface of the wedge-shaped portion of the clamping block and the supporting transverse plate is fixed and the thickness of the light guide plate is fixed, the thickness of glue between the back face of the light guide plate and the supporting transverse plate can be kept consistent, the levelness of the light guide plate is guaranteed, installation is more convenient, efficiency is high, and many mechanism parts do not need to be operated.

Description

Technical Field

[0001] This utility model belongs to the field of light guide plate technology, and more specifically relates to a surface light source light guide plate assembly. Background Technology

[0002] Currently, light guide plates used as surface light sources are usually glued directly to the outer frame during installation. The specific steps are to apply glue to the supporting surface of the outer frame, align the bonding surface of the light guide plate with the supporting surface, place it on the supporting surface, and gently press to make the light guide plate firmly bonded. However, manual application of glue has the problem of unevenness, resulting in different bonding strengths at different positions on the light guide plate, reducing the bonding quality. Furthermore, uneven glue can cause uneven heights on the sides of the light guide plate, affecting the light guiding effect.

[0003] The existing patent with publication number CN109917508A discloses a light guide plate installation structure, which sets up a light guide plate fixing component, an adjusting bolt component, a movable adjusting column and other structures on the lamp frame. It limits the light guide plate in the horizontal and vertical directions, as well as in the vertical direction, which facilitates installation, ensures a firm fixation, and avoids the problem of the light guide plate shifting due to vibration.

[0004] However, the above installation structure has many parts and is complex. When limiting the position, it is necessary to operate the adjusting bolt assembly and the light guide plate fixing assembly multiple times, which is inefficient. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a surface light source light guide plate assembly that ensures the light guide plate is installed horizontally while making installation more convenient and efficient, requiring no operation of numerous mechanical parts.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a surface light source light guide plate assembly, comprising several horizontal support plates and vertical support plates, which together form an outer frame. Adhesive is applied to the horizontal support plates, and the back of the light guide plate is glued to the horizontal support plates. The side of the light guide plate contacts the vertical support plates. A positioning and fixing assembly is provided on the vertical support plates, comprising a locking block and a top bead. The locking block is located above the top bead, and both the locking block and the top bead are telescopically connected to the vertical support plates. The bottom surface of the locking block is in close contact with the surface of the light guide plate, and the top bead abuts against the side of the light guide plate.

[0007] Furthermore, a first groove is provided on the support vertical plate, the locking block is slidably connected in the first groove, and one end of the locking block can extend out of the first groove. A first spring is provided in the first groove, and the first spring connects the first groove and the locking block.

[0008] Furthermore, a second groove is provided on the support vertical plate, the top bead is slidably connected in the second groove, and the end of the top bead can extend out of the second groove. A second spring is provided in the second groove, and the second spring connects the second groove and the top bead.

[0009] Furthermore, the end of the card block extending out of the second groove is a wedge-shaped part, the upper surface of the wedge-shaped part is an inclined surface, and the lower surface is in close contact with the surface of the light guide plate.

[0010] Furthermore, the thickness of the portion of the support plate above the card block is less than the thickness of the portion below the card block, and the transition is achieved through an inclined surface.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: First, apply glue to the support plate, align the back of the light guide plate with the support plate, and press down on the front side of the light guide plate with external force. When the back of the light guide plate contacts the glue on the support plate, apply more force to press the glue on the support plate evenly through the light guide plate until the glue fills the support plate until the locking block extends again and contacts the front of the light guide plate. Since the distance from the lower surface of the wedge-shaped part of the locking block to the support plate is constant, and the thickness of the light guide plate is constant, the glue thickness between the back of the light guide plate and the support plate will also remain consistent. This ensures the level of the light guide plate, and makes installation more convenient and efficient, without requiring the operation of many mechanical parts. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the surface light source light guide plate assembly of this utility model before the light guide plate is installed;

[0013] Figure 2 This is a schematic diagram of the structure of the surface light source light guide plate assembly of this utility model after the light guide plate is installed.

[0014] Reference numerals: 1. Supporting horizontal plate; 2. Supporting vertical plate; 3. Light guide plate; 4. Locking block; 5. Top bead; 6. First groove; 7. First spring; 8. Second groove; 9. Second spring; 10. Inclined surface; 11. Glue. Detailed Implementation

[0015] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0016] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" or "a number" means two or more, unless otherwise explicitly specified.

[0017] Reference Figure 1 and Figure 2 The present invention will be further described below.

[0018] A surface light source light guide plate assembly includes several horizontal support plates 1 and vertical support plates 2, which are arranged to form an outer frame. Adhesive 11 is applied to the horizontal support plates 1. The back of the light guide plate 3 is adhered to the horizontal support plates 1 by the adhesive 11. The side of the light guide plate 3 contacts the vertical support plates 2. A positioning and fixing assembly is provided on the vertical support plates. The positioning and fixing assembly includes a locking block 4 and a top bead 5. The locking block 4 is located above the top bead 5. Both the locking block 4 and the top bead 5 are telescopically connected to the vertical support plates 2. The bottom surface of the locking block 4 is in close contact with the surface of the light guide plate 3, and the top bead 5 abuts against the side of the light guide plate 3.

[0019] Specifically, the supporting horizontal plate 1 and the supporting vertical plate 2 are integrated. Adjacent supporting horizontal plates 1 and supporting vertical plates 2 can be fixedly connected by means of bonding, welding or other methods. Alternatively, the outer frame can be integrally formed by injection molding. If the outer frame is a thin metal sheet, it can be formed by stamping.

[0020] like Figure 1 and Figure 2 As shown in the preferred embodiment, the supporting vertical plate 2 is provided with a first groove 6, the locking block 4 is slidably connected in the first groove 6, and one end of the locking block 4 can extend out of the first groove 6. A first spring 7 is provided in the first groove 6, and the first spring 7 connects the first groove 6 and the locking block 4.

[0021] Specifically, the card block 4 is provided with a limiting protrusion ring, and the first groove 6 is provided with a limiting step surface corresponding to the limiting protrusion ring, so as to limit the card block 4 when it extends.

[0022] like Figure 1 and Figure 2 As shown in this embodiment, preferably, the support vertical plate is provided with a second groove 8, the top bead 5 is slidably connected in the second groove 8, and the end of the top bead 5 can extend out of the second groove 8. A second spring 9 is provided in the second groove 8, and the second spring 9 connects the second groove 8 and the top bead 5.

[0023] Specifically, the opening of the second groove 8 is smaller than the diameter of the top bead 5, so that the top bead 5 extends out of the second groove 8 only at one end, not exceeding its center.

[0024] like Figure 1 and Figure 2 As shown, in this preferred embodiment, the end of the card block 4 extending out of the second groove 8 is a wedge-shaped part, the upper surface of the wedge-shaped part is an inclined surface, and the lower surface is in close contact with the surface of the light guide plate 3.

[0025] like Figure 1 and Figure 2 As shown, in this preferred embodiment, the thickness of the portion of the support vertical plate 2 above the card block 4 is less than the thickness of the portion below the card block 4, and it transitions through the inclined surface 10. The support vertical plate 2 with a smaller upper thickness forms a larger opening, which facilitates the insertion of the light guide plate 3 into the outer frame.

[0026] like Figure 1 and Figure 2 As shown, before installing the light guide plate 3, apply glue 11 to the support horizontal plate 1 using an applicator. Then, align the back of the light guide plate 3 with the support horizontal plate 1 and place the light guide plate 3 on the support horizontal plate 1. During this process, the light guide plate 3 is inserted into the outer frame through the larger outer frame opening. The bottom side of the light guide plate 3 will first contact the inclined surfaces on the wedge-shaped parts of several locking blocks 4 that extend due to the first spring 7. Then, by pressing down the front side of the light guide plate 3 with external force, the locking blocks 4 overcome the first spring 7 and extend into the first groove 6. During the pressing down process, the side of the light guide plate 3 will contact the top bead 5 on the support vertical plate 2 and retract the top bead 5 into the second groove 8. The elastic force of the second spring 9 will keep the gaps between each side of the light guide plate 3 and each support vertical plate 2 consistent, avoiding the situation where one side has no gap and the other side has an excessively large gap.

[0027] When the back of the light guide plate 3 contacts the adhesive 11 on the supporting horizontal plate 1, further force is applied through the light guide plate 3 to press the adhesive 11 on the supporting horizontal plate 1 evenly and to fill the supporting horizontal plate 1 with adhesive 11 until the front of the light guide plate 3 completely passes over the lower surface of the wedge-shaped part of the locking block 4. Then the locking block 4 extends again to abut against the front of the light guide plate 3. Since the distance from the lower surface of the wedge-shaped part of the locking block 4 to the supporting horizontal plate 1 is constant, and the thickness of the light guide plate 3 is constant, the thickness of the adhesive 11 between the back of the light guide plate 3 and the supporting horizontal plate 1 will also be consistent. This ensures that the light guide plate 3 is level and that the installation is more convenient, efficient, and requires no operation of many mechanical parts.

[0028] Specifically, a thicker layer of adhesive 11 can be applied to the support plate 1 so that when the light guide plate 3 is pressed down, there is enough adhesive 11 to fill the space between the light guide plate 3 and the support plate 1, thereby improving the bonding strength.

[0029] Specifically, glue 11 can be applied manually using a roller brush or a brush.

[0030] Specifically, the excess glue 11 caused by the downward pressure of the light guide plate 3 overflows from the edge of the supporting horizontal plate 1 and can be scraped off with a scraper.

[0031] Specifically, the part of the light guide plate 3 that is bonded to the supporting horizontal plate 1 does not participate in light guiding and will not affect the overall light guiding effect of the light guide plate.

[0032] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A surface light source light guide plate assembly, characterized by: The utility model provides a light guide plate fixing device, including several support horizontal plates and support vertical boards, and the support horizontal plates and support vertical boards enclose and form an outer frame, the support horizontal plate is coated with glue, the back of light guide plate is bonded on the support horizontal plate through the glue, the side of light guide plate is in contact with the support vertical board, the support vertical board is provided with positioning and fixing assembly, the positioning and fixing assembly includes a clamping block and a top bead, the clamping block is located above the top bead, the clamping block and top bead are both telescopic connection on the support vertical board, the bottom surface of clamping block is close to the surface of light guide plate, and the top bead is in contact with the side of light guide plate.

2. The surface light source light guide plate assembly according to claim 1, wherein: The support vertical board is provided with a first recess, the clamping block is slidably connected in the first recess, and one end of the clamping block can extend out of the first recess, the first recess is provided with a first spring, and the first spring is connected with the first recess and the clamping block.

3. The surface light source light guide plate assembly according to claim 1, wherein: The support vertical board is provided with a second recess, the top bead is slidably connected in the second recess, and the end of the top bead can extend out of the second recess, the second recess is provided with a second spring, and the second spring is connected with the second recess and the top bead.

4. The surface light source light guide plate assembly according to claim 2, wherein: The end of the clamping block extending out of the second recess is a wedge-shaped part, the upper surface of the wedge-shaped part is an inclined surface, and the lower surface is close to the surface of the light guide plate.

5. The surface light source light guide plate assembly according to claim 1, wherein: The thickness of the part of the support vertical board above the clamping block is less than the thickness of the part below the clamping block, and the transition is through an inclined surface.

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