CN209569555U - A side-lit LED backlight - Google Patents

Abstract

The utility model discloses a side-light type LED backlight source, which comprises a light source box and a light guide plate. The light source box has an installation cavity with one side opening, and one side of the light guide plate is partially loaded into the installation cavity, and the installation cavity is installed A light source assembly, the light emitting surface of the light source assembly is set facing the light guide plate on one side, the light source assembly includes a lamp board and more than one lamp bead, the positive and negative poles of each lamp bead are respectively connected to the The positive and negative pins and more than one lamp bead are all fixedly mounted on an elastic band, and one end of the elastic band passes through an opening on one side of the light source box and protrudes outside the light source box. In the backlight of the utility model, the incidence angle of the lamp beads relative to the light guide plate and the distance between the lamp beads can be quickly adjusted, and can be quickly adjusted according to actual needs during later use, and the application range can be wider.

Description

A side-lit LED backlight

technical field

The utility model relates to a backlight source, in particular to a side-light LED backlight source.

Background technique

LED backlight includes light guide plate, diffusion film, light-emitting components, light-shielding film, etc. In order to reduce the thickness of the product, the side-type light source structure is widely used nowadays. The light-emitting component of the product is composed of more than one lamp bead structure. The distance between the lamp beads is generally fixed. After the distance is fixed, when the product is used later, if the light guide plate is replaced, the light source needs to be replaced, which is very inconvenient. All components need to be replaced accordingly. When there is a light problem in the later product, the distance between the lamp beads and the incident angle between the lamp beads and the light guide plate are difficult to adjust, and there are many shortcomings in use.

Contents of the invention

The technical problem to be solved by the utility model is to provide a side-light LED backlight, the incidence angle of the lamp beads relative to the light guide plate and the distance between the lamp beads can be quickly adjusted, and can be used according to actual needs in the later stage.

The utility model is realized through the following technical solutions: a side-light LED backlight source, including a light source box and a light guide plate, the light source box has an installation cavity with one side opening, and one side of the light guide plate is partially installed in the installation In the cavity, a light source assembly is installed in the installation cavity. The light emitting surface of the light source assembly is set facing the light guide plate on one side. The light source assembly includes a lamp board and more than one lamp bead. The positive and negative poles of each lamp bead The wires are respectively connected to the positive and negative pins on the lamp board. More than one lamp bead is fixedly installed on an elastic belt. One end of the elastic belt passes through the opening on one side of the light source box and protrudes outside the light source box. The protruding end of the elastic band is fixed and positioned by an adjustment mechanism.

As a preferred technical solution, an extension part protrudes from both sides of the outer opening of the light source box, and the adjustment mechanism adopts two positioning screws, which are spirally installed in the screw holes on the extension part, and the two positioning screws are arranged opposite to each other. , the protruding end of the elastic band passes through two positioning screws and is compressed and fixed by the positioning screws on both sides.

As a preferred technical solution, the inner side end of the elastic band is fixedly installed in a fixing base by screws, and the fixing base is fixedly installed on the inner wall of the installation cavity by screws.

As a preferred technical solution, more than one reflective plate is equidistantly bonded to the elastic band, and a lamp bead is installed on each reflective plate, and the positive and negative pins of the lamp bead are connected through the light-emitting plate and the elastic band. Light board.

As a preferred technical solution, the positive and negative pins of the lamp bead are each provided with a section of spring.

The beneficial effects of the utility model are: the backlight source of the utility model, the incident angle of the lamp beads relative to the light guide plate and the distance between the lamp beads can be quickly adjusted, and can be quickly adjusted according to actual needs during later use, The scope of use can be wider.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the overall structural representation of the utility model;

FIG. 2 is a partially enlarged schematic diagram of A in FIG. 1 .

Detailed ways

All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and/or steps.

Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

As shown in FIG. 1 , it includes a light source box 4 and a light guide plate 8. The light source box 4 has an installation cavity with one side opening, and one side of the light guide plate 8 is partially installed in the installation cavity, and a light source component is installed in the installation cavity. The light emitting surface of the light source assembly is set facing the light guide plate 8 on one side;

The light source assembly includes a lamp board 2 and more than one lamp bead 5, the positive and negative pole lines 9 of each lamp bead 5 are respectively connected to the positive and negative pins on the lamp board 2, and more than one lamp bead 5 is fixedly installed On an elastic belt 3, one end of the elastic belt 3 passes through the opening 7 on one side of the light source box 4 and protrudes outside the light source box 4, and the protruding end of the elastic belt 3 is fixed and positioned by an adjustment mechanism.

As shown in Figure 2, an extension 11 protrudes from both sides of the outer opening of the light source box. 12 are relatively arranged, the protruding end of the elastic band 3 passes through two positioning screws 12 and is pressed and fixed by the positioning screws 12 on both sides, and the inner side end of the elastic band 3 is fixed and installed in a fixed seat 1 by screws, and the fixed seat 1 It is fixed on the inner wall of the installation cavity by screws.

If you want to adjust the distance between the lamp beads, just loosen the two positioning screws and pull out the elastic belt. At this time, the distance between the lamp beads can be elongated, and then lock the two positioning screws. When it is necessary to adjust the incident angle of the lamp bead relative to the light guide plate, just adjust the two positioning screws so that the elastic band is no longer parallel to the light guide plate, and the angle adjustment can be completed.

More than one reflector 6 is bonded equidistantly on the elastic belt, and a lamp bead is installed on each reflector. Through the light-emitting board and the elastic belt to connect the light board, the positive and negative pins of the lamp bead are each provided with a spring segment. Due to the setting of the spring section, the distance between the lamp bead and the lamp panel is adjustable, and the distance between the lamp bead is also adjustable. In this way, whether it is to replace the light guide plate or to adjust the light source in the later stage, just pull the elastic belt, that is The distance between the lamp beads can be adjusted, and the elastic belt can be swung at the same time to adjust the angle between the whole elastic belt and the light guide plate, that is, to adjust the incident angle of the lamp beads relative to the light guide plate.

The beneficial effects of the utility model are: the backlight source of the utility model, the incident angle of the lamp beads relative to the light guide plate and the distance between the lamp beads can be quickly adjusted, and can be quickly adjusted according to actual needs during later use, The scope of use can be wider.

The above is only a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any change or replacement that is not thought of through creative work should be covered within the scope of protection of the utility model . Therefore, the protection scope of the present utility model should be determined by the protection scope defined in the claims.

Claims (5)

1. a kind of side light type LED backlight source, it is characterised in that: including a light source box, light guide plate, there is a side in light source box The installation cavity of opening, light guide plate side are partially loaded in installation cavity, installing a light source assembly in installation cavity, and light source assembly goes out Smooth surface faces the light guide plate setting of side, and the light source assembly includes the lamp bead of a lamp plate and one or more, each lamp bead Positive and negative polar curve be separately connected the positive and negative anodes pin on lamp plate, one or more lamp bead is fixedly installed on an elastic webbing, bullet Property band one end pass through the opening of light source box side and stretch out in the outside of light source box, the extension end of the elastic webbing is adjusted by one Save mechanism stationary positioned.

2. side light type LED backlight source as described in claim 1, it is characterised in that: the outer openings two sides of the light source box are each Protrusion one extension of setting, regulating mechanism use two positioning screws, and positioning screw spiral is installed in the screw hole on extension, Two positioning screws are oppositely arranged, and the extension end of elastic webbing passes through two positioning screws and compressed by the positioning screw of two sides solid It is fixed.

3. side light type LED backlight source as described in claim 1, it is characterised in that: the inner end of elastic webbing is screwed It is installed in a fixing seat, fixing seat is screwed on the inner wall for being installed on installation cavity.

4. side light type LED backlight source as described in claim 1, it is characterised in that: be equidistantly bonded with one piece on the elastic webbing Above reflector, a lamp bead is respectively mounted on every piece of reflector, and the positive and negative anodes pin of lamp bead passes through luminescent screen and elastic webbing Connect lamp plate.

5. side light type LED backlight source as described in claim 1, it is characterised in that: the positive and negative anodes pin of the lamp bead is respectively provided with There is one section of spring section.