Light box with adjustable light source irradiation angle

Abstract

The utility model discloses a light box with an adjustable light source irradiation angle, which belongs to the technical field of light boxes and comprises a shell and a light source component, the light source component is rotatably mounted in an accommodating cavity of the shell and comprises a fin radiator, a lamp panel and a radiating fan, and two sides of the fin radiator are rotatably connected with the shell. The lamp panel is installed on one side of the fin radiator, the radiating fan is installed on the other side of the fin radiator, a plurality of locking holes are formed in the shell around the rotating center of the fin radiator in the circumferential direction, a locking piece is installed on the shell, and the locking piece can penetrate through any locking hole to be connected with the fin radiator. And a shading plate is fixedly mounted at the edge of the lamp panel. According to the lamp box with the adjustable light source irradiation angle, the lamp panel is installed on the fin radiator, the fin radiator rotates to drive the lamp panel to rotate, the lamp panel is prevented from deforming easily, the control over the light source irradiation angle is facilitated, the light shielding plate is beneficial to light gathering, and enough illumination conditions can be provided.

Description

Technical Field

[0001] This utility model relates to the field of light box technology, and in particular, to a light box with an adjustable light source illumination angle. Background Technology

[0002] When designing an optical structure, two main parameters need to be considered: the illumination angle and uniformity of the light source. An approximate design range can be obtained through optical simulation. The main equipment used for optical simulation is a light box, on which a light source is installed. In actual installation and use, when there is a large deviation in the simulation results or when the simulation requirements change, it is usually necessary to adjust the position of the light source to meet the illumination angle of the light source.

[0003] Currently, most light boxes use light panels as the light source. The light panels are mounted on the outer shell of the light box via rotating pins on both sides. The light panels can rotate relative to the light box around the rotating pins, thereby achieving a large adjustment of the light source. However, the main structure of the light panel is an aluminum substrate, which is relatively thin. After prolonged use, the light panel may deform, making it difficult to control the illumination angle of the light source and resulting in poor reliability. At the same time, the light emitted by the light panel will be scattered from the edges of the light panel, resulting in poor light focusing and difficulty in providing sufficient illumination.

[0004] Therefore, it is necessary for the inventor to improve the structure of the lightbox to overcome the aforementioned defects. Summary of the Invention

[0005] The technical problem to be solved by this utility model is: in order to overcome the above-mentioned defects in the prior art, a light box with adjustable illumination angle using a reliable light source is provided.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a light box with adjustable light source illumination angle, including a shell and a light source assembly. The light source assembly is rotatably installed in the accommodating cavity of the shell. The light source assembly includes a finned heat sink, a lamp plate and a cooling fan. The two sides of the finned heat sink are rotatably connected to the shell. The lamp plate is installed on one side of the finned heat sink and the cooling fan is installed on the other side of the finned heat sink. The shell has a plurality of locking holes circumferentially opened around the rotation center of the finned heat sink. A locking member is installed on the shell. The locking member can pass through any one of the locking holes and connect to the finned heat sink. A light shield is fixedly installed at the edge of the lamp plate.

[0007] Furthermore, the finned heat sink includes a heat dissipation substrate and fins, the two sides of the heat dissipation substrate are rotatably connected to the outer casing, and the lamp plate is fixedly mounted on the surface of the heat dissipation substrate opposite to the fins.

[0008] Furthermore, the lamp panel includes an aluminum substrate and lamp beads mounted on the aluminum substrate, and the aluminum substrate is fixedly connected to the heat dissipation substrate.

[0009] Furthermore, the aluminum substrate is bonded to the heat dissipation substrate.

[0010] Furthermore, the thickness of the heat dissipation substrate is greater than the thickness of the aluminum substrate.

[0011] Furthermore, a fixing rod is vertically fixedly mounted on the surface of the heat dissipation substrate away from the lamp plate, and the cooling fan is mounted on the free end of the fixing rod.

[0012] Furthermore, the light-shielding plate includes a horizontal plate and a vertical plate connected to each other. The horizontal plate is fixed relative to the lamp plate and located on the side of the lamp plate away from the finned heat sink. The vertical plate is attached to the inner wall of the outer shell and is slidable relative to the outer shell.

[0013] Furthermore, a connecting post connects the lamp panel and the horizontal plate.

[0014] Furthermore, both sides of one end of the heat dissipation substrate extend outward to form screws, and the locking member is a disc bolt, which is threadedly connected to the screw after passing through the locking hole.

[0015] Furthermore, a rotating shaft is fixedly connected to the middle of each of the two opposite sides of the finned heat sink, and the rotating shafts on both sides are rotatably connected to the opposite sides of the outer casing. There are two cooling fans, and the two cooling fans are symmetrically arranged about the central axis of the rotating shafts.

[0016] The beneficial effects of this utility model are as follows: The adjustable light source illumination angle light box of this utility model has a light panel for emitting light installed on a finned heat sink. The opposite sides of the finned heat sink are rotatably connected to the opposite sides of the outer shell. When adjusting the illumination angle, it is only necessary to rotate the finned heat sink to drive the light panel to rotate. The finned heat sink serves as both a heat dissipation component for the light panel and a mounting carrier for the light panel, preventing the light panel from easily deforming and helping to control the illumination angle of the light source. At the same time, installing a light shield on the light panel helps to concentrate the light, making the illumination more concentrated and providing sufficient illumination conditions. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a perspective view of the adjustable light source illumination angle light box of this utility model;

[0019] Figure 2 yes Figure 1A partially exploded view of a lightbox with an adjustable light source illumination angle.

[0020] Figure 3 yes Figure 1 The front view of the adjustable light box with the light source illumination angle shown.

[0021] Figure 4 yes Figure 3 The light box with adjustable illumination angle shown is a cross-sectional view along AA.

[0022] Figure 5 yes Figure 4 A magnified view of point B in the adjustable light box with the light source illumination angle shown.

[0023] In the diagram: 1. Outer shell, 11. Receiving cavity, 12. Locking hole, 13. Heat dissipation hole, 2. Light source assembly, 21. Finned heat sink, 211. Heat dissipation substrate, 212. Fin, 213. Fixing rod, 214. Rotating shaft, 215. Screw, 216. Bolt, 22. Lamp board, 221. Aluminum substrate, 222. Lamp bead, 223. Connecting post, 23. Cooling fan, 3. Locking component, 4. Light shield, 41. Horizontal plate, 42. Vertical plate. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0025] Please see Figures 1-5 This utility model provides a light box with adjustable illumination angle, including a shell 1 and a light source assembly 2. A receiving cavity 11 is formed on the shell 1. The light source assembly 2 is rotatably disposed in the receiving cavity 11. The light source assembly 2 includes a finned heat sink 21, a lamp plate 22 and a cooling fan 23. The two sides of the finned heat sink 21 are rotatably connected to the shell 1. The lamp plate 22 is installed on one side of the finned heat sink 21 and the cooling fan 23 is installed on the other side of the finned heat sink 21. A plurality of locking holes 12 are circumferentially opened on the shell 1 around the rotation center of the finned heat sink 21. A locking member 3 is installed on the shell 1. The locking member 3 can pass through any one of the locking holes 12 and connect to the finned heat sink 21. A light shield 4 is fixedly installed at the edge of the lamp plate 22.

[0026] Please see Figure 2In this embodiment, the finned heat sink 21 includes a heat dissipation substrate 211 and fins 212. The heat dissipation substrate 211 has a flat plate structure, and there are multiple fins 212. The multiple fins 212 are evenly distributed on one surface of the heat dissipation substrate 211. The lamp plate 22 is fixedly mounted on the surface of the heat dissipation substrate 211 opposite to the fins 212. In use, the two sides of the heat dissipation substrate 211 are rotatably connected to the outer casing 1. The heat generated by the lamp plate 22 can be transferred to the heat dissipation substrate 211, and then further transferred to the fins 212, increasing the heat dissipation area and improving the heat dissipation effect.

[0027] Please see Figure 4 The lamp panel 22 includes an aluminum substrate 221 and LED beads 222 mounted on the aluminum substrate 221 for emitting light. The aluminum substrate 221 is fixedly connected to a heat dissipation substrate 211, and the connection method between the two includes, but is not limited to, welding and bolting. The aluminum substrate 221 and the heat dissipation substrate 211 are in close contact to achieve efficient heat transfer. At the same time, the thickness of the heat dissipation substrate 211 is greater than that of the aluminum substrate 221, and the structural strength of the heat dissipation substrate 211 is greater than that of the aluminum substrate 221. Therefore, the heat dissipation substrate 211 is not easily deformed. In addition, the heat dissipation substrate 211 serves as a mounting carrier for the lamp panel 22, which further prevents the lamp panel 22 from easily deforming and is beneficial for controlling the illumination angle of the light source.

[0028] The cooling fan 23 is mounted on the finned heat sink 21. When the cooling fan 23 is turned on, it can accelerate the airflow on the side of the finned heat sink 21 located on the fin 212, thereby speeding up heat dissipation.

[0029] Please also refer to Figure 2 , Figure 5 In one specific embodiment, a fixing rod 213 is vertically fixedly mounted on the surface of the heat dissipation substrate 211 away from the lamp plate 22, and the cooling fan 23 is mounted on the free end of the fixing rod 213 (i.e., the end of the fixing rod 213 away from the heat dissipation substrate 211). Specifically, one end of the fixing rod 213 is configured as a stud, which is threadedly connected to the heat dissipation substrate 211, and the other end of the fixing rod 213 has a threaded hole. The housing of the cooling fan 23 is connected to the threaded hole by fasteners such as bolts or screws, thereby realizing the connection relationship between the cooling fan 23 and the fixing rod 213. During installation, the stud at one end of the fixing rod 213 is directly threaded from between the fins 212 onto the heat dissipation substrate 211, resulting in a compact structure and convenient operation.

[0030] Please see Figure 2The finned heat sink 21 has a rotating shaft 214 fixedly connected to the middle of each of its two opposite sides. The rotating shafts 214 on both sides are rotatably connected to the opposite sides of the outer casing 1. There are two cooling fans 23, symmetrically arranged about the central axis of the rotating shafts 214. This ensures that the weight of the finned heat sink 21 on both sides of the rotating shafts 214 is balanced. When the illumination angle of the lamp panel 22 needs to be adjusted, simply rotating the finned heat sink 21 will rotate the lamp panel 22. After the lamp panel 22 is rotated to the appropriate position, the user can pass one end of the locking member 3 through the locking hole 12 and fix it to the finned heat sink 21. At this time, the relative position between the finned heat sink 21 and the outer casing 1 is locked, and they cannot move relative to each other.

[0031] In this embodiment, the locking element 3 is a disc bolt, which is threadedly connected to the finned heat sink 21. When the user screws in the disc bolt, the head of the disc bolt can abut against the outer wall of the outer casing 1, thereby achieving a locking relationship between the locking element 3 and the outer casing 1 and preventing the locking element 3 from easily separating from the outer casing 1. The disc-shaped structure of the head of the disc bolt increases the lateral force-bearing area, making it convenient for the user to turn the locking element 3 with one hand, greatly facilitating operation. In addition, by setting multiple locking holes 12, segmented angle adjustment is achieved. Since the locking holes 12 and the locking element 3 cooperate with each other, after the locking element 3 passes through the locking holes 12, the finned heat sink 21 cannot easily rotate relative to the outer casing 1. Compared with stepless adjustment, the angle is fixed by frictional locking, and this utility model is more reliable and avoids loosening.

[0032] Furthermore, both sides of one end of the heat dissipation substrate 211 extend outward to form a screw 215, and a threaded hole is provided on the screw 215. One end of the locking member 3 is threadedly connected to the threaded hole on the screw 215.

[0033] Additionally, please see Figure 5 A bolt 216 is installed on the outer casing 1. One end of the bolt 216 passes through the outer casing 1 and is threaded to one end of the rotating shaft 214. When the bolt 216 is loosened and one end of the locking member 3 is disengaged from the heat dissipation base plate 211, the user can rotate the finned heat sink 21. When the bolt 216 is tightened, the head of the bolt 216 abuts against the outer wall of the outer casing 1. Under the squeezing action of the head of the bolt 216, the rotating shaft 214 is locked on the outer casing 1, which further improves the locking reliability between the finned heat sink 21 and the outer casing 1.

[0034] Two light-shielding plates 4 are arranged opposite each other on opposite sides of the lamp plate 22. The light-shielding plates 4 have an L-shaped structure and include a horizontal plate 41 and a vertical plate 42 connected to each other. The horizontal plate 41 is fixed relative to the lamp plate 22 and located on the side of the lamp plate 22 away from the finned heat sink 21. The vertical plate 42 is attached to the inner wall of the outer shell 1 and can slide relative to the outer shell 1. When the finned heat sink 21 rotates, it can drive the light-shielding plates 4 to rotate relative to the outer shell 1. The horizontal plate 41 restricts the illumination area of ​​the lamp plate 22, which is conducive to light focusing and makes the light more concentrated on the desired position.

[0035] Please see Figure 2 In this embodiment, a connecting post 223 is fixedly connected between the lamp plate 22 and the horizontal plate 41. Specifically, one end of the connecting post 223 is fixedly connected to the aluminum substrate 221, and the other end of the connecting post 223 is fixedly connected to the horizontal plate 41. The light shield 4 is made of an opaque material, or the surface of the light shield 4 is coated with an opaque coating; this is not limited here.

[0036] To facilitate heat dissipation, heat dissipation holes 13 are provided on the outer casing 1 so that the heat inside the accommodating cavity 11 can be dissipated. Furthermore, in other embodiments, a heat dissipation fan is installed inside the outer casing 1 at the heat dissipation hole 13. When the heat dissipation fan is turned on, the heat inside the accommodating cavity 11 can be blown out to the outside of the outer casing 1 through the heat dissipation hole 13 to accelerate heat dissipation.

[0037] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A light box with adjustable illumination angle, comprising a housing and a light source assembly, wherein the light source assembly is rotatably mounted within a cavity of the housing, characterized in that: The light source assembly includes a finned heat sink, a lamp panel, and a cooling fan. The two sides of the finned heat sink are rotatably connected to the outer casing. The lamp panel is installed on one side of the finned heat sink, and the cooling fan is installed on the other side of the finned heat sink. The outer casing has multiple locking holes circumferentially around the rotation center of the finned heat sink. A locking element is installed on the outer casing. The locking element can pass through any one of the locking holes and connect to the finned heat sink. A light shield is fixedly installed at the edge of the lamp panel.

2. The adjustable light box with adjustable illumination angle as described in claim 1, characterized in that: The finned heat sink includes a heat dissipation substrate and fins. The two sides of the heat dissipation substrate are rotatably connected to the outer casing, and the lamp plate is fixedly mounted on the surface of the heat dissipation substrate opposite to the fins.

3. The adjustable light box with adjustable illumination angle as described in claim 2, characterized in that: The lamp panel includes an aluminum substrate and lamp beads mounted on the aluminum substrate, and the aluminum substrate is fixedly connected to the heat dissipation substrate.

4. The adjustable light source illumination angle lightbox as described in claim 3, characterized in that: The aluminum substrate is bonded to the heat dissipation substrate.

5. The adjustable light box with adjustable illumination angle as described in claim 3, characterized in that: The thickness of the heat dissipation substrate is greater than the thickness of the aluminum substrate.

6. The adjustable light box with adjustable illumination angle as described in claim 2, characterized in that: A fixing rod is vertically fixed on the surface of the heat dissipation substrate away from the lamp plate, and the cooling fan is installed on the free end of the fixing rod.

7. The adjustable light box with adjustable illumination angle as described in claim 1, characterized in that: The light-shielding plate includes a horizontal plate and a vertical plate connected to each other. The horizontal plate is fixed relative to the lamp plate and located on the side of the lamp plate away from the finned heat sink. The vertical plate is attached to the inner wall of the outer shell and is slidable relative to the outer shell.

8. The adjustable light source illumination angle lightbox as described in claim 7, characterized in that: A connecting column connects the lamp panel and the horizontal plate.

9. The adjustable light box with adjustable illumination angle as described in claim 2, characterized in that: Both sides of one end of the heat dissipation substrate extend outward to form screws, and the locking member is a disc bolt. The disc bolt passes through the locking hole and is threadedly connected to the screw.

10. The adjustable light box with adjustable illumination angle as described in claim 1, characterized in that: The finned heat sink has a rotating shaft fixedly connected to the middle of each of its two opposite sides. The rotating shafts on both sides are rotatably connected to the opposite sides of the outer casing. There are two cooling fans, which are symmetrically arranged about the central axis of the rotating shafts.

Images