CN218180650U

CN218180650U - Side-stretching backlight source device and detection equipment

Info

Publication number: CN218180650U
Application number: CN202222290758.6U
Authority: CN
Inventors: 钟超
Original assignee: Guangdong OPT Machine Vision Co Ltd
Current assignee: Guangdong OPT Machine Vision Co Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2022-12-30
Anticipated expiration: 2032-08-30

Abstract

The utility model discloses a side-stretching backlight source device and detection equipment, wherein the side-stretching backlight source device comprises a light source shell, and a light-emitting component and a diffusion plate unit are arranged on the light source shell; a transition connecting assembly is connected between the light source shell and the diffusion plate unit and comprises a first connecting part and a second connecting part; the diffusion plate unit is supported through the first connecting part, and is stretched through the second connecting part, so that the diffusion plate unit is stretched and tightened, and the situation that the diffusion plate unit sinks and deforms due to self weight is avoided; in the above arrangement, no additional tempered glass is required to be disposed between the light emitting element and the diffuser unit, so that the light-emitting utilization rate of the side-stretching backlight device is not affected, and the brightness of the side-stretching backlight device is not reduced. In summary, the lateral stretching backlight device and the detecting apparatus can avoid the occurrence of the concave deformation of the diffusion plate unit due to the self weight on the premise of not reducing the brightness of the backlight.

Description

Side-stretching backlight source device and detection equipment

Technical Field

The utility model relates to a defect detection technology field especially relates to a side-draw backlight device and check out test set.

Background

The defect detection refers to a detection technology aiming at the surface defects of the workpiece, and the defect detection of the workpiece is realized through the cooperation of a light source and a camera. When the defect detection is carried out on the liquid crystal screen, the light source is a backlight source for multiple selection.

As shown in fig. 1, the backlight source includes a housing 01, a lamp panel 02 is installed at the bottom of the housing 01, a diffuser plate 03 is installed at the top of the housing 01, and light emitted by the lamp panel 02 is diffused to the outside of the housing 01 after being diffused by the diffuser plate 03. The backlight described above is suitable for a scene with a small workpiece size, and when the workpiece size is large, the size of the backlight needs to be correspondingly increased, and in order to ensure uniformity of the light emitting surface, the diffuser plate 03 needs to be integrated, and thus the size of the diffuser plate 03 also increases correspondingly.

However, as the size of the diffusion plate 03 increases, the diffusion plate 03 is easily deformed to be recessed due to its own weight. In order to overcome the defect, the traditional solution is to add a piece of toughened glass at the bottom of the diffusion plate 03 to support the diffusion plate 03; however, the tempered glass in the above scheme may reduce the light-emitting utilization rate of the light source, resulting in a reduction in the brightness of the light source.

Therefore, it is necessary to develop a backlight to solve the problem of the concave deformation of the diffuser 03 due to its own weight without reducing the luminance of the backlight.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a side-draw backlight device and check out test set to solve the problem of the concave deformation of backlight among the prior art because of the dead weight for reaching this purpose under the prerequisite that does not reduce light source luminance, the utility model discloses a following technical scheme:

a side-stretching backlight source device comprises a light source shell, wherein a light emitting component and a diffusion plate unit are arranged on the light source shell;

a transition connecting assembly is connected between the light source shell and the diffusion plate unit and comprises a first connecting part and a second connecting part;

the diffusion plate unit is carried on the first connecting portion and is stretched outwards by the second connecting portion.

Optionally, an elastic stretching unit is further connected between the second connecting portion and the light source housing, one end of the elastic stretching unit is connected with the light source housing, and the other end of the elastic stretching unit is connected with the second connecting portion.

Optionally, one end of the elastic stretching unit is a first circular ring part, and the other end of the elastic stretching unit is a second circular ring part;

transition coupling assembling still includes third connecting portion, be provided with fourth connecting portion on the light source casing, first ring portion pass through the retaining member with third connecting portion are connected, second ring portion pass through the retaining member with fourth connecting portion are connected.

Optionally, a first guide pillar part is arranged on the third connecting part in a protruding manner, a second guide pillar part is arranged on the fourth connecting part in a protruding manner, and threaded holes are formed in the first guide pillar part and the second guide pillar part;

first ring portion cover is located outside the first guide post portion, second ring portion cover is located outside the second guide post portion, the screw hole with retaining member threaded connection.

Optionally, the third connecting portion and the fourth connecting portion are both provided with threaded holes;

one of the locking pieces penetrates through the first circular ring part to be in threaded connection with the threaded hole in the third connecting part, and the other locking piece penetrates through the second circular ring part to be in threaded connection with the threaded hole in the fourth connecting part.

Optionally, the first connecting portion, the second connecting portion and the third connecting portion are integrally formed, and a mounting groove is formed between the first connecting portion and the second connecting portion.

Optionally, the second connecting portion is disposed above the first connecting portion, the second connecting portion is provided with a first mounting hole, the diffuser plate unit is provided with a second mounting hole at a position corresponding to the first mounting hole, and the first mounting hole is connected to the second mounting hole through a locking member.

Optionally, the number of the transition connecting assemblies is multiple, and the transition connecting assemblies are arranged around the edge of the diffusion plate unit.

An inspection apparatus comprising a camera and a side-draw backlight arrangement as described above.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model provides a side-stretched backlight device and detection equipment, it bears the weight of diffuser plate unit through first connecting portion, stretches diffuser plate unit through second connecting portion, makes diffuser plate unit stretched tightly, avoids the diffuser plate unit to appear the condition of recessed deformation because of the dead weight; in the above arrangement, no additional tempered glass is required to be disposed between the light emitting element and the diffuser unit, so that the light extraction utilization rate of the side-drawing backlight device is not affected, and the brightness of the side-drawing backlight device is not reduced. In conclusion, the lateral stretching backlight device and the detection equipment can avoid the situation that the diffusion plate unit is recessed and deformed due to self weight on the premise of not reducing the brightness of the backlight.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

The structure, proportion, size and so on shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification for the understanding and reading of the people skilled in the art, and are not used to limit the limit conditions of the present invention, so that the present invention does not have the essential significance in the technology, and any structure modification, proportion relation change or size adjustment should still fall within the scope covered by the technical content disclosed in the present invention without affecting the function and the achievable by the present invention.

FIG. 1 is a schematic structural diagram of a backlight in the background art;

fig. 2 is a schematic view of a first partial structure of a side-stretching backlight device according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a second partial schematic structural view of a side-stretching backlight device according to an embodiment of the present invention;

fig. 5 is a schematic view illustrating an installation of a diffuser plate unit of a side-stretching backlight device according to an embodiment of the present invention.

Illustration of the drawings: 01. a housing; 02. a lamp panel; 03. a diffusion plate;

10. a light source housing; 101. a fourth connecting portion; 20. a light emitting element; 30. a diffusion plate unit; 40. a transition connection assembly; 401. a first connection portion; 402. a second connecting portion; 403. a third connecting portion; 404. mounting grooves; 410. an elastic stretching unit; 411. a first circular ring portion; 412. a second circular portion; 50. a locking member; 60. and (7) a cover plate.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. It should be noted that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Referring to fig. 2 to 5, fig. 2 is a schematic view of a first partial structure of a side-stretching backlight device according to an embodiment of the present invention, fig. 3 is a schematic view of a partial enlarged structure at a position a in fig. 2, fig. 4 is a schematic view of a second partial structure of a side-stretching backlight device according to an embodiment of the present invention, and fig. 5 is a schematic view of a diffuser plate unit of a side-stretching backlight device according to an embodiment of the present invention.

Example one

The side-stretching backlight source device provided by the embodiment is applied to a detection scene of a workpiece, and is particularly suitable for detecting surface defects of a liquid crystal screen and has a polishing effect on the liquid crystal screen; through improving the structure of the tensile backlight device of offside, make it make diffuser plate unit 30 be difficult for recessed deformation under the prerequisite that luminance does not reduce, simultaneously this institutional advancement back, than toughened glass's scheme, possess advantages such as light in weight, simple to operate, save buffer material, reduce cost.

As shown in fig. 2 to 4, the side-drawing backlight device of the present embodiment includes a light source housing 10, on which a light emitting assembly 20 and a diffusion plate unit 30 are mounted on the light source housing 10; the light source housing 10 is provided with a light source mounting groove, and the light emitting module 20 and the diffusion plate unit 30 are disposed in the light source mounting groove. A transition connection assembly 40 is connected between the light source housing 10 and the diffusion plate unit 30, and the transition connection assembly 40 includes a first connection portion 401 and a second connection portion 402; the diffusion plate unit 30 is supported on the first connection portion 401, the diffusion plate unit 30 is stretched outwards by the second connection portion 402, the cover plate 60 is disposed at the notch of the light source installation slot, and the cover plate 60 plays a role in shielding the transition connection assembly 40.

Specifically, the present side stretching backlight device carries the diffuser plate unit 30 through the first connecting portion 401, stretches the diffuser plate unit 30 through the second connecting portion 402, so that the diffuser plate unit 30 is stretched and tightened, and avoids the situation that the diffuser plate unit 30 is deformed due to sinking due to its own weight; in the above arrangement, no additional tempered glass is required to be disposed between the light emitting element 20 and the diffuser unit 30, so that the light-emitting utilization rate of the side-stretching backlight device is not affected, and the brightness of the side-stretching backlight device is not reduced. In summary, the side-stretching backlight device can avoid the occurrence of the concave deformation of the diffusion plate unit 30 due to its own weight without reducing the backlight luminance. It is supplementary to need, owing to need not set up the toughened glass that weight is higher and the cost is higher for the side draws backlight device after the improvement is lighter than prior art's improvement scheme weight, and the cost is lower, and need not consider the complicated connection structure between toughened glass and the light source casing 10, makes the installation more convenient, has saved required buffer material (buffer material can prevent that toughened glass from appearing the fracture) when installing toughened glass simultaneously, makes overall cost further reduce.

Further, an elastic stretching unit 410 is connected between the second connecting portion 402 and the light source housing 10, one end of the elastic stretching unit 410 is connected to the light source housing 10, and the other end of the elastic stretching unit 410 is connected to the second connecting portion 402. Wherein, through the arrangement of the elastic stretching unit 410, an outward pulling force can be provided for the diffusion plate unit 30, so that the middle part of the diffusion plate unit 30 is not easily recessed.

In this embodiment, the elastic tension unit 410 is a tension spring unit. In other alternative embodiments, the elastic stretching unit 410 may be a wire material with a certain tension, such as a steel wire, and the second connecting portion 402 may be made of a material with a certain elastic modulus and directly connected to the light source housing 10 to stretch the diffusion plate unit 30.

Further, as shown in fig. 2 and 3, when the elastic stretching unit 410 is a tension spring unit, one end of the elastic stretching unit 410 is a first circular ring portion 411, and the other end of the elastic stretching unit 410 is a second circular ring portion 412; the transition connection assembly 40 further includes a third connection portion 403, a fourth connection portion 101 is disposed on the light source housing 10, the first circular portion 411 is connected to the third connection portion 403 through a locking member 50, and the second circular portion 412 is connected to the fourth connection portion 101 through the locking member 50. Exemplarily, when installing diffuser plate unit 30, can connect first ring portion 411 and third connecting portion 403 through foretell retaining member 50 earlier, and second ring portion 412 and fourth connecting portion 101 are connected to rethread retaining member 50, wherein, when installing second ring portion 412 and fourth connecting portion 101, receive the restriction of size, can make the extension spring unit stretched, and then accomplish the installation under overcoming tensile prerequisite, make diffuser plate unit 30 can be stretched by extension spring unit edgewise after the installation, possess the simple advantage of installation.

In a specific embodiment, a first guide pillar portion is convexly arranged on the third connecting portion 403, a second guide pillar portion is convexly arranged on the fourth connecting portion 101, and threaded holes are formed in the first guide pillar portion and the second guide pillar portion; the first circular portion 411 is sleeved outside the first guide pillar portion, the second circular portion 412 is sleeved outside the second guide pillar portion, and the threaded hole is in threaded connection with the locking member 50. For example, after the circular ring part is sleeved outside the guide post part, the circular ring part can be connected with the threaded hole through the locking piece 50, so that the circular ring part is prevented from sliding out of the guide post part.

In another specific embodiment, the third connecting portion 403 and the fourth connecting portion 101 are both provided with threaded holes; one of the locking members 50 passes through the first circular ring portion 411 and is in threaded connection with a threaded hole in the third connecting portion 403, and the other locking member 50 passes through the second circular ring portion 412 and is in threaded connection with a threaded hole in the fourth connecting portion 101. Illustratively, the locking piece 50 passes through the circular ring part to play a role in positioning the circular ring part, and then the locking piece is installed in the threaded hole, so that the circular ring part is prevented from being deviated; in both embodiments, the locking member 50 is a screw, and can be connected to the third connecting portion 403 and the fourth connecting portion 101 to complete the positioning of the circular portion.

Further, as shown in fig. 3, the first connection portion 401, the second connection portion 402 and the third connection portion 403 are integrally formed, and an installation groove 404 is formed between the first connection portion 401 and the second connection portion 402. Wherein, above-mentioned three connecting portion are the metal, and integrated into one piece plays the effect of strengthening rib to reduce the quantity of part, be convenient for assemble and reduce cost, the setting of mounting groove 404 is convenient for the staff to install diffuser plate unit 30 in transition coupling assembling 40 simultaneously.

Further, the second connecting portion 402 is disposed above the first connecting portion 401, and the second connecting portion 402 has a first mounting hole, the diffuser unit 30 has a second mounting hole corresponding to the first mounting hole, and the first mounting hole is connected to the second mounting hole through the locking member 50. The locking member 50 may be a conventional locking member such as a bolt or a pin.

Further, as shown in fig. 5, the transition connection assembly 40 is plural in number and is circumferentially disposed along the edge of the diffuser plate unit 30. With the above arrangement, the diffuser plate unit 30 can be stretched in various directions, and the diffuser plate unit 30 can be reinforced.

In summary, the side-stretching backlight device of the present embodiment makes the diffusion plate unit 30 not prone to concave deformation without decreasing the brightness, and has the advantages of light weight, convenient installation, saving buffer material, and reducing the cost.

Example two

The detection apparatus of this embodiment includes a camera and a side-stretching backlight device as in the first embodiment, the side-stretching backlight device performs a polishing function on the workpiece, and the camera can acquire surface image information of the workpiece. The first embodiment describes a specific structure and technical effects of the side-stretching backlight device, and the detection apparatus of the first embodiment uses the structure, and also has the technical effects.

In summary, the detection apparatus of the embodiment makes the diffusion plate unit 30 not prone to concave deformation on the premise that the brightness is not reduced, so that the detection effect is improved, and the detection apparatus has the advantages of being light in weight, convenient to install, saving buffer materials, reducing cost and the like.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A side-stretching backlight device is characterized by comprising a light source shell (10), wherein a light-emitting component (20) and a diffusion plate unit (30) are arranged on the light source shell (10);

a transition connection assembly (40) is connected between the light source housing (10) and the diffusion plate unit (30), wherein the transition connection assembly (40) comprises a first connection part (401) and a second connection part (402);

wherein the diffusion plate unit (30) is carried on the first connecting portion (401), and the diffusion plate unit (30) is stretched outwards by the second connecting portion (402).

2. The side-stretching backlight device as claimed in claim 1, wherein an elastic stretching unit (410) is further connected between the second connecting portion (402) and the light source housing (10), one end of the elastic stretching unit (410) is connected to the light source housing (10), and the other end of the elastic stretching unit (410) is connected to the second connecting portion (402).

3. The side-stretched backlight device of claim 2, wherein one end of the elastic stretching unit (410) is a first circular part (411), and the other end of the elastic stretching unit (410) is a second circular part (412);

transition coupling assembling (40) still includes third connecting portion (403), be provided with fourth connecting portion (101) on light source casing (10), first ring portion (411) through retaining member (50) with third connecting portion (403) are connected, second ring portion (412) through retaining member (50) with fourth connecting portion (101) are connected.

4. The side-draw backlight device as claimed in claim 3, wherein a first pillar portion is protruded from the third connecting portion (403), a second pillar portion is protruded from the fourth connecting portion (101), and both the first pillar portion and the second pillar portion have threaded holes;

the first circular part (411) is sleeved outside the first guide post part, the second circular part (412) is sleeved outside the second guide post part, and the threaded hole is in threaded connection with the locking part (50).

5. The side-stretching backlight device as claimed in claim 3, wherein the third connecting portion (403) and the fourth connecting portion (101) are both provided with threaded holes;

one of the locking pieces (50) penetrates through the first circular ring part (411) to be in threaded connection with a threaded hole in the third connecting part (403), and the other locking piece (50) penetrates through the second circular ring part (412) to be in threaded connection with a threaded hole in the fourth connecting part (101).

6. The side-stretching backlight device as claimed in claim 3, wherein the first connecting portion (401), the second connecting portion (402) and the third connecting portion (403) are integrally formed, and a mounting groove (404) is formed between the first connecting portion (401) and the second connecting portion (402).

7. The side-stretching backlight device as claimed in claim 6, wherein the second connecting portion (402) is disposed above the first connecting portion (401), and the second connecting portion (402) has a first mounting hole, the diffuser plate unit (30) has a second mounting hole corresponding to the first mounting hole, and the first mounting hole and the second mounting hole are connected by a locking member (50).

8. The side-hung backlight device as claimed in claim 2, wherein the transition connection assembly (40) is plural in number and is disposed around the edge of the diffuser plate unit (30).

9. An inspection apparatus comprising a camera and a side-stretched backlight device as claimed in any one of claims 1 to 8.