Light inspection equipment for automobile bumpers

Abstract

This utility model discloses a lighting inspection device for automobile bumpers, including a housing, a positioning diaphragm, an imaging colorimeter, and a robotic arm. The positioning diaphragm is located inside the housing and is used to position and support the automobile bumper. The imaging colorimeter is located inside the housing and is used to inspect the automobile bumper. The robotic arm is used to drive the movement of the imaging colorimeter and to allow the imaging colorimeter to collect data from the automobile bumper at a perspective perpendicular to the light-emitting surface. Through the stable fixation of the positioning diaphragm and the precise movement of the imaging colorimeter driven by the robotic arm, the imaging colorimeter can collect data at a standard perspective perpendicular to the light-emitting surface of the automobile bumper, effectively avoiding measurement errors caused by angle deviations and ensuring the accuracy and reliability of the test results. The fully automated inspection process significantly shortens the cycle time of a single inspection compared to manual operation, effectively meeting the high-cycle, high-volume production needs of production lines.

Description

Technical Field

[0001] This utility model relates to the field of vehicle inspection technology, and in particular to a light inspection device for automobile bumpers. Background Technology

[0002] With the rapid development of the domestic automotive exterior parts industry, the design and function of car bumpers are increasingly incorporating intelligent elements, with intelligent illuminated car bumpers being a typical example. In such projects, the realization and quality control of lighting effects become crucial, especially optical performance parameters such as brightness, color temperature, and power, which directly affect the overall visual effect and safety performance of the vehicle.

[0003] Currently, in the optical inspection of illuminated car bumpers, most companies still rely on traditional manual visual inspection methods. This method suffers from several problems: inspectors are prone to visual fatigue from prolonged work, leading to missed inspections and misjudgments; subjective factors make it difficult to standardize evaluation criteria for optical characteristics among different personnel, resulting in inconsistent inspection results; furthermore, manual inspection is inefficient, unsuitable for large-scale, high-paced production, and fails to meet the requirements of digital quality management. Therefore, developing efficient, reliable, and automated lighting inspection equipment has become a crucial requirement for promoting the further development and application of intelligent illuminated car bumper technology. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a headlight inspection device for automobile bumpers, capable of automatically detecting parameters such as headlight position, brightness, and color temperature, thereby improving inspection efficiency and accuracy.

[0005] The lighting inspection device for automobile bumpers according to an embodiment of the present invention includes: Box; A positioning membrane, located inside the box, is used to position and support the vehicle bumper; An imaging colorimeter, located inside the housing, is used to detect the car bumper; A robotic arm is used to move the imaging colorimeter and to allow the imaging colorimeter to collect data from the car bumper from a perspective perpendicular to the light-emitting surface.

[0006] The lighting inspection equipment for automobile bumpers according to embodiments of this utility model has at least the following beneficial effects: By stably fixing the positioning membrane and precisely moving the imaging colorimeter driven by the robotic arm, the imaging colorimeter can collect data from a standard angle perpendicular to the luminous surface of the automobile bumper, effectively avoiding measurement errors caused by angle deviation and ensuring the accuracy and reliability of the test results. The fully automated inspection process replaces traditional manual visual operation, quickly completing the acquisition and analysis of brightness and color data from multiple inspection points. The cycle time for a single inspection is significantly shortened compared to manual operation, effectively meeting the high-cycle, high-volume production needs of the production line.

[0007] According to some embodiments of the present invention, the positioning membrane includes a support frame, two headlight positioning blocks and a support block, wherein the two headlight positioning blocks and the support block are all mounted on the support frame, and the support block is located between the two headlight positioning blocks.

[0008] According to some embodiments of the present invention, the support frame is provided with wiring terminals, which are used to connect to the wiring harness of the car bumper.

[0009] According to some embodiments of the present invention, the housing is provided with a motion mechanism, which is used to drive the robotic arm to move so that the imaging colorimeter can capture images of the left 1 / 3, middle and right 1 / 3 of the luminous area of ​​the car bumper.

[0010] According to some embodiments of the present invention, the robotic arm includes a first rotary joint, a second rotary joint, a third rotary joint, and a fourth rotary joint. The first rotary joint is used for horizontal rotation, and the second, third, and fourth rotary joints are used for vertical swinging.

[0011] According to some embodiments of the present invention, the inner wall of the box is provided with a black light-shielding layer.

[0012] According to some embodiments of the present invention, the housing includes a top plate, a bottom plate, a left side plate, a right side plate, a back plate, and a light-shielding curtain. The top plate, the bottom plate, the left side plate, the right side plate, and the back plate surround and form an open detection space. The light-shielding curtain is disposed at the opening to block the opening. The top plate, the bottom plate, the left side plate, the right side plate, the back plate, and the light-shielding curtain are all provided with the black light-shielding layer.

[0013] According to some embodiments of the present invention, the housing is provided with a rolling mechanism, which is used to roll up or lower the blackout curtain.

[0014] According to some embodiments of the present invention, a grating is provided at the opening.

[0015] According to some embodiments of the present invention, the light inspection equipment is equipped with a controller and an alarm device. The controller, the alarm device, and the imaging colorimeter are communicatively connected. The controller is used to receive images captured by the imaging colorimeter and perform comparative calculations on the captured images. When abnormal data is found, it can control the alarm device to issue an alarm.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the light inspection equipment according to an embodiment of the present utility model; Figure 2 for Figure 1 The diagram shown illustrates the concealed rolling mechanism and light-blocking curtain of the light inspection equipment. Figure 3 for Figure 1 The diagram shows the alignment of the positioning membrane and the car bumper. Figure 4 for Figure 3 A schematic diagram showing the positioning of the fetal membranes; Figure 5 for Figure 1 A schematic diagram of the robotic arm and imaging colorimeter is shown.

[0018] Figure label: 100. Housing; 110. Motion mechanism; 120. Top plate; 130. Bottom plate; 140. Left side plate; 150. Right side plate; 160. Back plate; 170. Sunshade curtain; 180. Rolling mechanism; 190. Light grating; 200. Positioning membrane; 210. Support frame; 220. Headlight positioning block; 230. Support block; 240. Terminal block; 300. Imaging colorimeter; 400. Robotic arm; 410. First rotary joint; 420. Second rotary joint; 430. Third rotary joint; 440. Fourth rotary joint; 500. Alarm device; 600. Display screen; 700. Car bumper. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional 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. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] Reference Figure 1 and Figure 2 The lighting inspection equipment of this utility model mainly consists of a housing 100, a positioning membrane 200, an imaging colorimeter 300, and a robotic arm 400. The housing 100 serves as the basic supporting frame of the equipment, its core function being to create a stable and interference-free optical inspection environment, preventing external ambient light (such as natural workshop light or other equipment lighting) from interfering with the data acquisition of the imaging colorimeter 300. The positioning membrane 200 is fixed inside the housing 100 for precise support and positioning of the car bumper 700 to be inspected. The imaging colorimeter 300, located inside the housing 100, is a core detection element installed at the end of the robotic arm 400. Its function is to convert the optical characteristics of the luminous surface of the car bumper 700 into quantifiable digital data, replacing manual visual inspection to complete the detection of indicators such as brightness, color temperature, and uniformity. The high-precision robotic arm 400 is used to drive the imaging colorimeter 300 to move in three-dimensional space and can precisely control its posture to ensure that the lens is always perpendicular to the light-emitting surface of the car bumper 700 during data acquisition, thereby obtaining high-precision optical data.

[0024] During operation, the car bumper 700 to be inspected is fixed by a special positioning diaphragm 200 inside the housing 100; then, the robotic arm 400 moves the imaging colorimeter 300 to each detection point according to the preset program, and actively adjusts its posture to ensure that it collects images and data from the best angle perpendicular to the light-emitting surface, laying the foundation for accurate measurement.

[0025] Reference Figure 3 and Figure 4 The positioning membrane 200 includes a support frame 210, two headlight positioning blocks 220, and a support block 230. All two headlight positioning blocks 220 and the support block 230 are mounted on the support frame 210, with the support block 230 positioned between the two headlight positioning blocks 220. The support frame 210 is the "skeleton" of the positioning membrane 200, bearing the installation and fixing functions of all positioning and supporting components, as well as the overall load-bearing function, and is the foundation for ensuring the stability of the membrane. It is typically made of high-strength aluminum alloy profiles or cold-rolled steel, and has an overall "frame structure adapted to the bottom contour of the car bumper 700." Bolt fixing holes are pre-drilled at the bottom for precise locking within the equipment housing 100, ensuring no overall displacement of the membrane during testing. The two headlight positioning blocks 220 are symmetrically installed on both sides of the top of the support frame 210, corresponding to the headlight mounting areas at the left and right ends of the car bumper 700, achieving precise positioning of the car bumper 700. The headlight area of ​​the car bumper 700 is the core benchmark for the entire vehicle assembly, and its positional accuracy directly determines the relative position of other luminous areas (such as daytime running lights and dynamic light effect strips). Through the contoured boss of the headlight positioning block 220, the lateral offset of the car bumper 700 can be controlled within a small error range, ensuring high consistency in the lateral and longitudinal positions of the car bumper 700 during each inspection. The support block 230 is installed on top of the support frame 210, in the central area between the two headlight positioning blocks 220, corresponding to the non-luminous flat area in the middle of the car bumper 700 (such as the position of the body reinforcing rib). Its core function is to assist in supporting the weight of the middle of the car bumper 700, calibrate its vertical posture, and prevent sagging in the middle due to the car bumper 700's own weight. The car bumper 700 is mostly made of thin-walled plastic with no rigid structural support in the middle. If it is only fixed by the headlight positioning blocks 220 on both sides, it is prone to bending downwards in the middle due to its own weight, causing the posture of the light-emitting surface to shift (such as increasing the vertical distance between the central light-emitting area and the imaging colorimeter 300). The upward support of the central support block 230 ensures that the entire light-emitting surface of the car bumper 700 is on the same horizontal reference plane, and the posture deviation in the vertical direction is controlled within a small error, ensuring that the imaging colorimeter 300 can collect data from a perspective perpendicular to the light-emitting surface.

[0026] Reference Figure 4The support frame 210 is equipped with a CAN communication terminal block 240, which is used to quickly connect the car bumper 700 to its wiring harness after the bumper 700 is fixed, powering on the product and providing a test signal. The illuminated car bumper 700 is manually placed on the positioning membrane 200, aligned with the headlight positioning blocks 220 on both sides, and then the wiring harness plug is connected to power on the product and put it into a test-ready state. The installation position of the terminal block precisely corresponds to the position of the car bumper 700's wiring harness interface. After the car bumper 700 is mechanically fixed to the central support block 230 via the headlight positioning blocks 220, its built-in wiring harness plug can be directly plugged into and unplugged from the terminal block without additional position adjustments.

[0027] Reference Figure 2 The housing 100 is equipped with a motion mechanism 110, which drives the robotic arm 400 to move, enabling the imaging colorimeter 300 to capture images of the left 1 / 3, middle, and right 1 / 3 of the luminous area of ​​the car bumper 700. The motion mechanism 110, as the displacement drive unit for the robotic arm 400, is installed on the top or side wall of the housing 100. It typically employs a combination structure of a high-precision linear module and a servo motor. Its core function is to drive the robotic arm 400 to reciprocate horizontally (along the length of the car bumper 700), achieving a wide range of positional adjustments for the imaging colorimeter 300. For example, the motion mechanism 110 includes four core components: a guide rail, a slider, a ball screw, and a servo motor. The guide rail is fixed parallel to the length of the luminous surface of the car bumper 700, the slider is rigidly connected to the base of the robotic arm 400, and the servo motor drives the ball screw to move the slider along the guide rail. The effective stroke of the motion mechanism 110 must cover the entire length of the illuminated area of ​​the car bumper 700 (usually 1.5-2.5 meters, adaptable to different car bumper sizes), ensuring that it can move the robotic arm 400 to the left 1 / 3, middle and right 1 / 3 of the illuminated area, with a safety margin of more than 50mm.

[0028] The motion mechanism 110 controls the large-scale displacement, responsible for moving the robotic arm 400 to the left, center, and right target areas of the luminescent region. The robotic arm 400 is responsible for local posture adjustment. After the motion mechanism 110 delivers the imaging colorimeter 300 to the target area, the robotic arm 400 adjusts the angle and distance of the colorimeter through multi-axis linkage to ensure that its lens axis is always perpendicular to the luminescent surface of that area (e.g., perpendicularity deviation ≤ 0.5°), and that the detection area is located at the center of the lens's field of view, avoiding edge distortion from affecting data accuracy.

[0029] By taking photos from three points—left, center, and right—the system covers both the edge and center of the 700-degree luminous area on the car bumper, avoiding missed defects caused by single-point detection (e.g., detecting only the center area might ignore brightness attenuation on both sides). This is especially suitable for detecting long, strip-shaped dynamic light effect strips. The three-point shooting method can also be used to determine overall uniformity.

[0030] Reference Figure 5 The robotic arm 400 of this embodiment includes a first rotary joint 410, a second rotary joint 420, a third rotary joint 430, and a fourth rotary joint 440. The first rotary joint 410 is used for horizontal rotation, while the second, third, and fourth rotary joints 420, 430, and 440 are used for vertical swinging. Specifically, the first rotary joint 410 adjusts the overall horizontal orientation of the robotic arm 400 to fit the arc-shaped contour of the light-emitting surface of the car bumper 700 (e.g., the bumper 700 of some car models has a slightly curved surface design), ensuring that the initial posture is aligned with the detection area. The second, third, and fourth rotary joints 420, 430, and 440 adjust the vertical swing angle of the robotic arm to fit light-emitting areas at different heights, controlling the vertical distance between the imaging colorimeter 300 and the light-emitting surface. Through the linkage of the four rotary joints, the robotic arm 400 achieves full-dimensional adjustment of "position + angle" in space.

[0031] Understandably, the inner wall of the enclosure 100 is equipped with a black light-shielding layer, forming a completely dark environment. This black light-shielding layer can be made of a high-absorption matte composite material, meeting the stringent requirements of optical inspection for "low reflection and no stray light." This design is crucial for ensuring the reliability of the optical inspection environment: its core purpose is to absorb stray light from inside and outside the enclosure 100 to the greatest extent possible, effectively preventing background interference caused by multiple reflections of light on the inner wall of the enclosure 100. This solves the problem of inaccurate brightness and colorimetry measurements caused by ambient light superimposed on the self-illumination of the car bumper 700 during inspection in non-ideal optical environments. Therefore, it provides a pure dark-field environment for the imaging colorimeter 300 to acquire high signal-to-noise ratio real image data, fundamentally ensuring the accuracy and repeatability of the inspection results.

[0032] Reference Figure 1The enclosure 100 includes a top plate 120, a bottom plate 130, a left side plate 140, a right side plate 150, a back plate 160, and a light-shielding curtain 170. The top plate 120, bottom plate 130, left side plate 140, right side plate 150, and back plate 160 enclose an open inspection space. The light-shielding curtain 170 is located at the opening to block it. All the enclosures—top plate 120, bottom plate 130, left side plate 140, right side plate 150, back plate 160, and light-shielding curtain 170—are equipped with a black light-shielding layer. The enclosure 100 adopts a "five-sided fixed + one-sided movable" frame design. The flexibly openable and closable light-shielding curtain 170 greatly facilitates manual loading and unloading operations, while effectively blocking the opening during operation. All inner surfaces are equipped with a black light-shielding layer, forming a complete and continuous light-shielding system. This design systematically eliminates internal light reflection and external stray light interference, providing a stable and pure "visual darkroom" for high-precision optical inspection, fundamentally ensuring the accuracy and repeatability of luminance and chromaticity measurement data.

[0033] Reference Figure 1 The housing 100 is equipped with a rolling mechanism 180, which is used to roll up or down the blackout curtain 170. The rolling mechanism 180 mainly consists of three parts: a drive unit, a roller assembly, and a guide and limit assembly. The drive unit is a high-speed motor with a reducer to ensure stable output speed and sufficient torque. At the same time, the motor has a built-in "power-off braking function", which can immediately lock the roller after power failure to prevent the blackout curtain 170 from slipping due to its own weight and ensure operational safety. The roller assembly includes a metal roller and curtain fixing parts. The top of the blackout curtain 170 is fixed to the roller with high-strength Velcro or metal clips. The two ends of the roller are installed on the top plate 120 through bearing seats. When rotating, it can evenly roll up the blackout curtain 170 to avoid curtain wrinkles (wrinkles will cause local light leakage). The guide limit assembly is installed on the left side plate 140 and right side plate 150 on both sides of the opening. It can be set as a symmetrical "vertical slide rail" (made of aluminum alloy with wear-resistant nylon strips on the inside). The two sides of the blackout curtain 170 are embedded in the slide rail and slide along the slide rail during lifting to avoid left and right deviation. At the same time, "photoelectric limit switches" are installed at the top (the fully rolled-up position of the blackout curtain 170) and the bottom (the fully lowered position of the blackout curtain 170) of the slide rail. When the blackout curtain 170 reaches the limit position, the limit switch sends a signal to the control system, and the motor stops automatically to prevent over-rolling or over-unrolling from damaging the mechanism.

[0034] Reference Figure 1 and Figure 2An optical grating 190 is installed at the opening. The optical grating 190 can be an infrared through-beam grating, which determines whether a foreign object has intruded into the opening area by the "on / off" state of the infrared beam. When the equipment is running, if the optical grating 190 detects an object (such as an operator's arm) accidentally intruding into the opening area, the system can immediately trigger an emergency stop or pause the motion mechanism 110 (such as the robotic arm 400), effectively preventing mechanical collisions or clamping accidents, achieving a safety upgrade from passive protection to active detection. This not only ensures the safety of the operator but also protects the expensive testing equipment and the product under test, making the automated testing process more efficient and reliable.

[0035] Reference Figure 1 and Figure 2 The lighting inspection equipment is equipped with a controller and an alarm device 500. The controller, alarm device 500, and imaging colorimeter 300 are communicatively connected. The controller receives images captured by the imaging colorimeter 300 and performs comparative calculations on the captured images. When abnormal data is found, it can control the alarm device 500 to sound an alarm. The lighting inspection equipment also has a display screen 600, which is communicatively connected to the controller. After the imaging colorimeter 300 completes its image capture, the controller calculates and analyzes the image data and displays the results (such as luminance and chromaticity values, uniformity charts, etc.) on the display screen 600 in real time. At the same time, the controller automatically judges according to preset standards. Once abnormal data is detected, it drives the alarm device 500 to sound an audible and visual alarm, thereby achieving rapid quality feedback. As the core of the system, the controller typically adopts a combination architecture of an industrial-grade PLC (Programmable Logic Controller) and an embedded image processing module. It has three core capabilities: data reception, analysis and calculation, and command issuance, and serves as the "nerve center" connecting all hardware components. The controller is equipped with a high-performance processor and a large-capacity storage module, and features multiple communication interfaces (RS485, EtherNet / IP, CAN bus), enabling real-time communication with components such as the imaging colorimeter 300, alarm device 500, display screen 600, scrolling mechanism 180, and six-axis robotic arm 400. Through a built-in optical detection algorithm, it quantifies image data: extracting brightness and color temperature values ​​for each area, calculating brightness uniformity (maximum / minimum brightness difference ratio), and comparing it with preset acceptable thresholds (e.g., brightness 800-1200 cd / m²). 2The system compares the results with other components (color temperature 6000±500K, uniformity deviation ≤15%). Based on the analysis results, instructions are sent to other components (e.g., if the test is qualified, the rolling mechanism 180 raises the light-blocking curtain 170; if abnormal, the alarm device 500 is triggered). Simultaneously, the timing of the robotic arm 400 and the motion mechanism 110 is coordinated to ensure automated operation of the testing process. The alarm device mainly consists of a buzzer and LED alarm lights, typically installed in a prominent position on the outside of the equipment housing 100 (e.g., on the top or next to the control panel). Its core function is to provide multi-dimensional early warnings to operators to address abnormal test data or equipment malfunctions. The display screen 600 is embedded in the equipment control panel, supporting touch operation and data display. It is the core interface for operator-equipment interaction, providing a clear and intuitive human-machine interface for easy observation of detailed data and problem tracing. The introduction of the alarm device 500 enables immediate and proactive alarms for quality anomalies, ensuring that non-conforming products are detected and intercepted immediately. This system works together to significantly improve testing efficiency, the objectivity and reliability of results, and the rapid response capability of the production line.

[0036] The operating process of the lighting inspection equipment is as follows: The operator places the illuminated car bumper 700 on the positioning membrane 200, aligns it with the positioning block to complete the positioning, and then connects the wiring harness plug to power on the product. After clicking the run button on the operation interface of the display screen 600, the equipment automatically executes the detection program: the roller shutter door closes, creating a darkroom environment; the car bumper 700 is powered on and illuminated. The robotic arm 400 drives the imaging colorimeter 300 to move along a predetermined trajectory, acquiring images three times from the left, middle, and right sides of the illuminated surface of the car bumper 700. The system calculates and analyzes the brightness and color of the acquired images and displays the results on the interface in real time. If the detection data exceeds the set standard, the buzzer immediately sounds an alarm. After the inspection is completed, the operator disconnects the wiring harness plug, removes the product, and transfers it to the packaging trolley.

[0037] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A light inspection device for automobile bumpers, characterized in that, include: Box; A positioning membrane, located inside the box, is used to position and support the vehicle bumper; An imaging colorimeter, located inside the housing, is used to detect the car bumper; A robotic arm is used to move the imaging colorimeter and to allow the imaging colorimeter to collect data from the car bumper from a perspective perpendicular to the light-emitting surface.

2. The lighting inspection equipment for automobile bumpers according to claim 1, characterized in that, The positioning membrane includes a support frame, two headlight positioning blocks, and a support block. The two headlight positioning blocks and the support block are all mounted on the support frame, and the support block is located between the two headlight positioning blocks.

3. The lighting inspection equipment for automobile bumpers according to claim 2, characterized in that, The support frame is equipped with wiring terminals, which are used to connect to the wiring harness of the car bumper.

4. The lighting inspection equipment for automobile bumpers according to claim 1, characterized in that, The housing is equipped with a motion mechanism, which is used to drive the robotic arm to move so that the imaging colorimeter can capture images of the left 1 / 3, middle and right 1 / 3 of the luminous area of ​​the car bumper.

5. The lighting inspection equipment for automobile bumpers according to claim 1, characterized in that, The robotic arm includes a first rotary joint, a second rotary joint, a third rotary joint, and a fourth rotary joint. The first rotary joint is used for horizontal rotation, and the second, third, and fourth rotary joints are used for vertical swinging.

6. The lighting inspection equipment for automobile bumpers according to claim 1, characterized in that, The inner wall of the box is provided with a black light-blocking layer.

7. The lighting inspection equipment for automobile bumpers according to claim 6, characterized in that, The enclosure includes a top plate, a bottom plate, a left side plate, a right side plate, a back plate, and a light-shielding curtain. The top plate, the bottom plate, the left side plate, the right side plate, and the back plate form an open detection space. The light-shielding curtain is located at the opening to block it. The top plate, the bottom plate, the left side plate, the right side plate, the back plate, and the light-shielding curtain are all provided with the black light-shielding layer.

8. The lighting inspection equipment for automobile bumpers according to claim 7, characterized in that, The housing is equipped with a rolling mechanism, which is used to roll up or lower the blackout curtain.

9. The lighting inspection equipment for automobile bumpers according to claim 7, characterized in that, A grating is provided at the opening.

10. The lighting inspection equipment for automobile bumpers according to claim 1, characterized in that, The light inspection equipment is equipped with a controller and an alarm device. The controller, the alarm device, and the imaging colorimeter are communicatively connected. The controller is used to receive images captured by the imaging colorimeter and perform comparative calculations on the captured images. When abnormal data is found, it can control the alarm device to issue an alarm.

Images