Search

CN-224203000-U - Lamp box and visual detection device

CN224203000UCN 224203000 UCN224203000 UCN 224203000UCN-224203000-U

Abstract

The utility model relates to the technical field of light source structures and discloses a light box and a visual detection device, wherein the light box comprises a box body, a light outlet is formed in the bottom of the box body, a top plate opposite to the light outlet is arranged on the bottom of the box body, and a diffuse reflection area is arranged on the bottom surface of the top plate; the strip-shaped light source assembly is arranged in the box body, and light rays emitted by the strip-shaped light source assembly can be emitted from the light outlet after being reflected by the diffuse reflection area. The lamp box and the visual detection device can better detect the tiny scratches.

Inventors

  • ZHANG ZIHAO

Assignees

  • 广东奥普特科技股份有限公司

Dates

Publication Date
20260505
Application Date
20250331

Claims (10)

  1. 1. A light box, comprising: The light emitting device comprises a box body (1), wherein a light emitting opening (101) is formed in the bottom of the box body (1), a top plate (11) opposite to the light emitting opening (101) is arranged, and a diffuse reflection area is formed in the bottom surface of the top plate (11); The strip-shaped light source assembly (2) is arranged in the box body (1), and light rays emitted by the strip-shaped light source assembly (2) can be emitted from the light outlet (101) after being reflected by the diffuse reflection area.
  2. 2. The light box according to claim 1, characterized in that the top plate (11) is provided with a through detection hole (111); The strip-shaped light source assembly (2) comprises at least two first strip-shaped light sources (21), and one first strip-shaped light source (21) is arranged on two opposite sides of the detection hole (111).
  3. 3. A light box according to claim 2, characterized in that the bar-shaped light source assembly (2) comprises two second bar-shaped light sources (22), and that one of the second bar-shaped light sources (22) is arranged on each of opposite sides of the detection hole (111); The two first strip-shaped light sources (21) and the two second strip-shaped light sources (22) are connected end to form a rectangular structure, and the rectangular structure surrounds the center line of the detection hole (111).
  4. 4. The lamp box according to claim 1, wherein the box body (1) comprises a side plate (12), a mounting U-shaped groove (121) is formed in the side plate (12), the mounting U-shaped groove (121) penetrates through the side plate (12), and a notch of the mounting U-shaped groove (121) extends to the bottom side edge of the side plate (12) to form a U-shaped notch; The strip-shaped light source assembly (2) is provided with a first nut fixing groove (201), and the fastening screw (3) can extend into the installation U-shaped groove (121) and is in threaded connection with the nut in the first nut fixing groove (201).
  5. 5. The light box according to claim 4, characterized in that the bar-shaped light source assembly (2) has a heat radiation fin portion forming the first nut fixing groove (201) corresponding to the mounting U-shaped groove (121).
  6. 6. The light box according to claim 5, characterized in that the heat sink fin portion is provided with one first nut fixing groove (201) on each of opposite sides thereof, and a second nut fixing groove (202) on each of opposite ends thereof.
  7. 7. The light box of claim 1, wherein the diffuse reflective area is provided with a white paint baked reflective layer.
  8. 8. The lamp box according to claim 4, wherein the box body (1) comprises four side plates (12), and the inner side surfaces of the side plates (12) close to the strip-shaped light source assembly (2) are fully covered with a baking white paint reflecting layer.
  9. 9. A light box according to claim 1, characterized in that the diffuse reflection area is distributed over the bottom surface of the top plate (11).
  10. 10. A visual inspection device, characterized by comprising a camera (4) and a light box as claimed in any one of claims 1 to 9.

Description

Lamp box and visual detection device Technical Field The utility model relates to the technical field of light source structures, in particular to a lamp box and a visual detection device. Background In the surface defect visual inspection device, a light source is one of important component parts, and the quality of the light source directly influences visual inspection efficiency and inspection accuracy. The existing strip-shaped light source can directly emit strip-shaped light spots to the surface of a workpiece, and the strip-shaped light spots are projected on the surface of the workpiece, so that the surface defects of the workpiece are more easily shot by a detection camera. However, the light emitted by the strip-shaped light spot directly forms a light spot on the workpiece, so that the light emitting direction is uniform, and partial tiny scratches on the surface of the workpiece are possibly difficult to detect by a camera, such as partial tiny scratches parallel to the extending direction of the light spot or partial tiny scratches perpendicular to the extending direction of the light spot. In view of this, there is a need to design a light box and a visual inspection device to at least partially solve the above problems. The above information is presented as background information only to aid in the understanding of the present disclosure and is not intended or admitted to be prior art relative to the present disclosure. Disclosure of utility model The utility model provides a lamp box and a visual detection device, which are beneficial to enabling a camera to better detect tiny scratches. In order to achieve the above object, the present utility model provides the following technical solutions: A light box, comprising: The light emitting device comprises a box body, wherein a light emitting opening is formed in the bottom of the box body, a top plate opposite to the light emitting opening is arranged on the bottom of the box body, and a diffuse reflection area is arranged on the bottom surface of the top plate; The strip-shaped light source assembly is arranged in the box body, and light rays emitted by the strip-shaped light source assembly can be emitted from the light outlet after being reflected by the diffuse reflection area. Optionally, the top plate is provided with a penetrating detection hole; The strip light source assembly comprises at least two first strip light sources, and one first strip light source is arranged on two opposite sides of the detection hole. Optionally, the strip light source assembly includes two second strip light sources, and two opposite sides of the detection hole are respectively provided with one second strip light source; the two first strip-shaped light sources and the two second strip-shaped light sources are connected end to form a rectangular structure, and the rectangular structure surrounds the center line of the detection hole. Optionally, the box body comprises a side plate, a mounting U-shaped groove is formed in the side plate, the mounting U-shaped groove penetrates through the side plate, and a notch of the mounting U-shaped groove extends to the bottom side edge of the side plate to form a U-shaped notch; The strip-shaped light source assembly is provided with a first nut fixing groove, and the fastening screw can extend into the installation U-shaped groove and is in threaded connection with a nut in the first nut fixing groove. Optionally, the strip-shaped light source assembly has a heat radiation fin portion, and the heat radiation fin portion forms the first nut fixing groove corresponding to the mounting U-shaped groove. Optionally, the two opposite sides of the heat dissipation fin portion are respectively provided with a first nut fixing groove, and the two opposite ends of the heat dissipation fin portion are respectively provided with a second nut fixing groove. Optionally, the diffuse reflection area is provided with a white paint baking reflecting layer. Optionally, the box includes four the curb plate, the curb plate is close to the medial surface of bar light source subassembly is full cloth roast white paint reflector layer. Optionally, the diffuse reflection area is distributed on the bottom surface of the top plate. A visual inspection device comprising a camera and a light box as claimed in any one of the preceding claims. Compared with the prior art, the utility model has the following beneficial effects: The light emitted by the strip-shaped light source assembly is reflected by the diffuse reflection area and then emitted from the light outlet and irradiates on the surface of the workpiece, and the light spots are reflected by the diffuse reflection area and then further diverge the light, so that the irradiation direction and the irradiation angle of the light irradiated on the surface of the workpiece are more various, thereby being beneficial to enabling part of tiny scratches to be clearly displayed in the image of th