Adjustable light source box

Abstract

The utility model discloses an adjustable light source box which comprises a box body, a control part and an LED module, and the control part and the LED module are arranged in the box body. The box body is provided with a back plate, a panel, a left side plate, a right side plate, a top plate and a bottom plate, the back plate is provided with a plurality of mounting holes, the LED modules are mounted on the back plate through screws and the mounting holes, the LED modules are transversely and longitudinally arranged and distributed, the panel is provided with a light outlet, and the outer side of the panel is provided with a limiting strip for mounting a to-be-tested piece at the edge of the light outlet. The surfaces of the left side plate, the right side plate and the top plate are coated with reflective materials, a lifting handle for lifting is arranged on the outer side of the top plate, and supporting legs are arranged on the outer side of the bottom plate. According to the adjustable light source box, the light reflecting material is arranged in the box body and matched with the LED module to form the reflection and diffuse reflection phenomena of light in the box body, so that the light intensity and illumination of the light outlet of the box body are uniform, a structure convenient to move and place is arranged outside the box body, and the use convenience of the adjustable light source box when the adjustable light source box is applied to machine vision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical equipment, in particular to an adjustable light source box. Background Art

[0002] Machine vision is a rapidly developing branch of artificial intelligence. Simply put, machine vision involves replacing the human eye with machines for measurement and judgment. The lighting system is one of the most critical components of machine vision. Commonly used light sources in machine vision include fluorescent lamps, halogen lamps, and LEDs. LEDs are increasingly becoming the dominant light source for machine vision due to their long lifespan, stable brightness, ability to create diverse spectrums, strobe and low-power options, strong lighting flexibility, and adjustable brightness and color temperature. PWM dimming, which adjusts the average current of LEDs by varying the duty cycle of a PWM signal, has become the most popular dimming technology due to its ease of generation, transmission, and isolation.

[0003] At present, the light source boxes on the market are inconvenient to use when applied to machine vision and cannot provide stable and uniform illumination. Therefore, it is urgent to research a light source box to solve the above technical problems. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides an adjustable light source box that can provide stable and uniform illumination and is convenient to use.

[0005] The adjustable light source box according to the first embodiment of the utility model comprises:

[0006] The box body has a back panel, a panel, a left panel, a right panel, a top panel and a bottom panel. The back panel is provided with multiple mounting holes. The LED module is mounted on the back panel through screws and the mounting holes. The multiple LED modules are arranged in the horizontal and vertical directions. The panel is provided with a light outlet. The outer side of the panel is located at the edge of the light outlet. A limiting strip for mounting the test piece is provided. The surfaces of the left panel, the right panel and the top panel are all coated with reflective material. The outer side of the top panel is provided with a handle for pulling. The outer side of the bottom panel is provided with a supporting foot.

[0007] The adjustable light source box according to the embodiment of the present invention has at least the following beneficial effects: the adjustable light source box, by arranging reflective material inside the box body, cooperates with the LED module to form reflection and diffuse reflection of light inside the box body, so that the light intensity and illumination of the light outlet of the box body are uniform, and the outside of the box body is provided with a structure that is convenient for movement and placement, thereby improving the convenience of use of the adjustable light source box when applied to machine vision.

[0008] According to some embodiments of the present invention, a plurality of first heat dissipation slots are provided on the outer side of the back plate, and the first heat dissipation slots are arranged and distributed. A support block is provided on the outer side of the back plate at a position corresponding to the mounting hole, and the support block is used to support the screw.

[0009] According to some embodiments of the present invention, second heat dissipation slots are provided on the outer sides of the panel, the left side panel, the right side panel and the top panel.

[0010] According to some embodiments of the present invention, the LED module comprises a circuit board and a plurality of light sources arranged in an array on the circuit board.

[0011] According to some embodiments of the present invention, the reflective material is a barium sulfate coating.

[0012] According to some embodiments of the present invention, the panel is provided with a probe of a visible light illuminance meter, the probe is electrically connected to the host of the visible light illuminance meter, the test piece is installed at the light outlet through a test board, the test board is provided with a probe hole, and the probe is installed in the probe hole.

[0013] According to some embodiments of the present invention, the support leg has a retractable support rod and a base mounted on the support rod, and the support rod is connected to the bottom plate.

[0014] According to some embodiments of the present invention, a plurality of limiting grooves for limiting the control component are provided on the inner side of the bottom plate, and the control component is electrically connected to the LED module.

[0015] According to some embodiments of the present invention, the handle has a mounting seat and a U-shaped handle rotatably disposed on the mounting seat.

[0016] According to some embodiments of the present invention, two limit bars are provided and are parallel to each other, a cover plate is provided on the outer side of the two limit bars, and a test port is opened on the cover plate at a position corresponding to the light outlet.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0019] Figure 1 This is a schematic diagram of an adjustable light source box according to an embodiment of the present invention;

[0020] Figure 2 for Figure 1A schematic diagram of the back panel of the adjustable light source box is shown;

[0021] Figure 3 for Figure 1 A schematic diagram of the bottom plate of the adjustable light source box is shown;

[0022] Figure 4 for Figure 1 A schematic diagram of the left side panel of the adjustable light source box is shown;

[0023] Figure 5 for Figure 1 A schematic diagram of the limit bar of the adjustable light source box is shown.

[0024] Reference numerals:

[0025] Box body 1, panel 2, back panel 3, top panel 4, bottom panel 5, left side panel 6, right side panel 7, limit bar 8, cover plate 9, first heat dissipation slot 10, second heat dissipation slot 11, handle 12, supporting foot 13, limit slot 14, supporting block 15. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of this utility model, "several" means one or more, "more" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. If the term "first" or "second" is used in a description, it is only used to distinguish technical features and should not be understood to indicate or imply relative importance, implicitly specify the number of the indicated technical features, or implicitly specify the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Machine vision is a rapidly developing branch of artificial intelligence. Simply put, machine vision involves replacing the human eye with machines for measurement and judgment. The lighting system is one of the most critical components of machine vision. Commonly used light sources in machine vision include fluorescent lamps, halogen lamps, and LEDs. LEDs are increasingly becoming the dominant light source for machine vision due to their long lifespan, stable brightness, ability to create diverse spectrums, strobe and low-power options, strong lighting flexibility, and adjustable brightness and color temperature. PWM dimming, which adjusts the average current of LEDs by varying the duty cycle of a PWM signal, has become the most popular dimming technology due to its ease of generation, transmission, and isolation.

[0031] At present, the light source boxes on the market are inconvenient to use when applied to machine vision and cannot provide stable and uniform light intensity. Therefore, it is urgent to research a light source box to solve the above technical problems.

[0032] In response to the above technical problems, an embodiment of the present utility model provides an adjustable light source box. By arranging reflective materials inside the box and cooperating with the LED module to form reflection and diffuse reflection of light inside the box, the light intensity at the light outlet of the box meets the standard and the light at the light outlet is uniform. In addition, the outside of the box is provided with a structure that is convenient for movement and placement, thereby improving the convenience of use of the adjustable light source box when applied to machine vision.

[0033] The following is combined with Figures 1 to 5 The adjustable light source box according to the embodiment of the present invention is described.

[0034] Reference Figure 1 As shown, in an embodiment of the present utility model, the adjustable light source box includes a box body 1, a control component and an LED module. The LED module and the control component are arranged in the box body 1 and are connected to an external power supply or a built-in power supply. The control component is used to adjust the light intensity of the LED module, and the LED module provides light for the test. In order to achieve visible light illumination adjustment, a constant current controllable power supply is used, and an illumination controllable scene of 70,000 Lux to 100,000 Lux is achieved by adjusting the knob. In order to ensure the stability of the light source, the light source and the controller are powered by 24V DC. This solution uses a high-precision constant current source to convert the AC 220V power supply into DC 24VDC, which can ensure the light intensity stability of the system and at the same time improve the safety of the equipment.

[0035] It should be noted that the housing 1 comprises a back panel 3, a front panel 2, a left side panel 6, a right side panel 7, a top panel 4, and a bottom panel 5. The control components are mounted on the inner side of the bottom panel 5, and the LED modules are mounted on the inner side of the back panel 3. The "inner side" here refers to the side located inside the housing 1 after the back panel 3, front panel 2, left side panel 6, right side panel 7, top panel 4, and bottom panel 5 are assembled.

[0036] Reference Figure 2 As shown, in an embodiment of the present utility model, the back panel 3 is provided with a plurality of mounting holes, and the LED module is mounted on the back panel 3 by means of screws and the mounting holes. The plurality of LED modules are arranged and distributed in the horizontal and vertical directions. Such a design can make the light emitted by the LED module more uniform. A plurality of first heat dissipation grooves 10 are provided on the outside of the back panel 3. The first heat dissipation grooves 10 are arranged and distributed. Support blocks 15 are provided at the positions of the mounting holes on the outside of the back panel 3. The support blocks 15 are used to support the screws. The provision of the first heat dissipation grooves 10 can greatly enhance the heat dissipation effect of the box body 1 on the LED module, and prevent the adjustable light source box from overheating during use, which may cause the LED to burn out. Due to the provision of the first heat dissipation grooves 10, the back panel 3 becomes thinner and its strength is reduced. If the screws are directly installed and are not stable enough, the support blocks 15 are provided to support the screws, thereby improving the stability of the assembled LED module.

[0037] The LED module also features a circuit board and multiple light sources arranged in an array on the circuit board. The matrix-style LED module provides uniform illumination, and the multiple light sources provide sufficient illumination intensity. The adjustable range of illumination is wide and the adjustment precision is high, effectively improving the accuracy and reliability of the test.

[0038] Reference Figure 1 and Figure 5 As shown, in an embodiment of the present utility model, the panel 2 is provided with a light outlet, and a limiting strip 8 for installing the piece to be tested is provided on the outer side of the panel 2 at the edge of the light outlet. There are two limiting strips 8 that are parallel to each other. The two limiting strips 8 are respectively located on the upper and lower sides of the light outlet, and the piece to be tested is clamped between the two limiting strips 8. In addition, a cover plate 9 is provided on the outer side of the two limiting strips 8, and a test port is provided on the cover plate 9 corresponding to the position of the light outlet. The front of the piece to be tested is limited by the cover plate 9, and the upper and lower sides are limited by the limiting strips 8, so as to achieve fixation. The size of the light outlet is configured to be 292 mm long and 222 mm wide. The test board for installing the piece to be tested can be replaced. The test board is installed between the limiting strips 8 and the cover plate 9, and the test board can be directly pulled out.

[0039] It should be noted that in the embodiment of the present invention, in order to facilitate use and improve work efficiency, panel 2 is provided with a probe of the visible light illuminance meter, the probe is electrically connected to the host of the visible light illuminance meter, the test piece is installed at the light outlet through the test board, the test board is provided with a probe hole, and the probe is installed in the probe hole. In this way, real-time monitoring can be achieved during the test, and the measurement range of the visible light illuminance meter is adjustable from 70,000 Lux to 100,000 Lux.

[0040] Reference Figure 1 and Figure 4As shown, in an embodiment of the present invention, in order to achieve a light uniformity of not less than 85% at the light outlet, a three-sided surround layout similar to an integrating sphere is first adopted inside the cube space, and the surfaces of the left side panel 6, the right side panel 7 and the top panel 4 are all coated with a reflective material, which is a barium sulfate coating. Through uniform reflection and diffuse reflection processing, the required light intensity and light uniformity can be measured.

[0041] It should be noted that, in the embodiment of the present invention, in order to further improve the heat dissipation effect of the box body 1 , second heat dissipation slots 11 are provided on the outer sides of the panel 2 , the left side panel 6 , the right side panel 7 and the top panel 4 .

[0042] Reference Figure 1 As shown, in the embodiment of the present invention, a handle 12 for carrying is provided on the outer side of the top plate 4. The handle 12 has a mounting base and a U-shaped handle rotatably arranged on the mounting base. The design of the handle 12 improves the convenience during use.

[0043] Reference Figure 3 As shown, in this embodiment of the present invention, support legs 13 are provided on the outside of the base plate 5. A plurality of retaining grooves 14 are provided on the inside of the base plate 5 for retaining the control components, which are electrically connected to the LED modules. Furthermore, the support legs 13 include a retractable support rod and a base mounted on the support rod, which is connected to the base plate 5.

[0044] Reference Figure 1 As shown, in the embodiment of the present invention, the back panel 3, the panel 2, the left side panel 6, the right side panel 7, the top panel 4 and the bottom panel 5 are all subjected to conductive anti-oxidation treatment, and the outer surfaces are sprayed with anti-oxidation paint, thereby improving the oxidation resistance of the box body 1.

[0045] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An adjustable light source box, characterized in that: include: The box body has a back panel, a panel, a left panel, a right panel, a top panel and a bottom panel. The back panel is provided with multiple mounting holes. The LED module is mounted on the back panel through screws and the mounting holes. The multiple LED modules are arranged in the horizontal and vertical directions. The panel is provided with a light outlet. The outer side of the panel is located at the edge of the light outlet. A limiting strip for mounting the test piece is provided. The surfaces of the left panel, the right panel and the top panel are all coated with reflective material. The outer side of the top panel is provided with a handle for pulling. The outer side of the bottom panel is provided with a supporting foot.

2. The adjustable light source box according to claim 1, characterized in that: A plurality of first heat dissipation slots are provided on the outer side of the back plate, and the first heat dissipation slots are arranged and distributed. A support block is provided on the outer side of the back plate at a position corresponding to the mounting hole, and the support block is used to support the screw.

3. The adjustable light source box according to claim 1, characterized in that: Second heat dissipation slots are provided on the outer sides of the panel, the left side panel, the right side panel and the top panel.

4. The adjustable light source box according to claim 1, characterized in that: The LED module comprises a circuit board and a plurality of light sources arranged in an array on the circuit board.

5. The adjustable light source box according to claim 1, characterized in that: The reflective material is a barium sulfate coating.

6. The adjustable light source box according to claim 1, characterized in that: The panel is provided with a probe of a visible light illuminometer, the probe is electrically connected to the host of the visible light illuminometer, the test piece is installed at the light outlet through a test board, the test board is provided with a probe hole, and the probe is installed in the probe hole.

7. The adjustable light source box according to claim 1, characterized in that: The supporting foot comprises a telescopic supporting rod and a base mounted on the supporting rod, and the supporting rod is connected to the bottom plate.

8. The adjustable light source box according to claim 1, characterized in that: A plurality of limiting grooves for limiting the control component are provided on the inner side of the bottom plate, and the control component is electrically connected to the LED module.

9. The adjustable light source box according to claim 1, characterized in that: The handle comprises a mounting seat and a U-shaped handle rotatably arranged on the mounting seat.

10. The adjustable light source box according to claim 1, characterized in that: There are two limit bars parallel to each other, and a cover plate is provided on the outer sides of the two limit bars. A test port is provided on the cover plate at a position corresponding to the light outlet.

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