A dual high CRI flat panel light for video and film applications

Abstract

This utility model discloses a dual high-resolution video flat panel light, the purpose of which is to provide a light guide plate located within the frame. A frame is provided at the light-emitting end of the light guide plate, and several light-shielding plates are arranged circumferentially around the frame. The light-shielding plates are angled to the frame, restricting the light emission direction of the light guide plate in multiple directions. A connecting component is provided between the frame and the frame to fix the frame to the frame. This utility model features multi-directional angle adjustment and quick assembly / disassembly.

Description

Technical Field

[0001] This utility model relates to the field of lighting equipment technology, and in particular to a dual high-visibility film and television flat panel light. Background Technology

[0002] In high-end lighting fields such as film and television production, professional photography, and stage performances, flat panel lights are widely used due to their advantages such as uniform and soft light, relatively compact size, and ease of lighting setup. In particular, "dual high CRI" flat panel lights, with their high color rendering index and high color fidelity, can more realistically reproduce the colors of the subject, making them essential lighting fixtures for professional scenes. The light-shielding structure of a flat panel light is crucial for controlling the beam direction and eliminating stray light. Traditional solutions directly fix the light-shielding plate to the edge of the light outlet of the frame using clips or screws. This method has problems with limited angle adjustment and difficult maintenance. Regarding the former problem, the rigid connection between the light-shielding plate and the frame makes it difficult to achieve multi-degree-of-freedom angle fine-tuning; regarding the latter problem, replacing or adjusting the light-shielding plate requires removing each plate individually, which is cumbersome. Utility Model Content

[0003] The purpose of this invention is to provide a dual high-visibility film and television flat panel light that is adjustable in multiple directions and can be quickly disassembled and assembled.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a dual high-resolution video flat panel light, including a frame and a light guide plate located within the frame. The light guide plate has a frame at its light-emitting end, and a plurality of light-shielding plates are arranged circumferentially on the frame. The light-shielding plates are arranged at an angle to the frame to restrict the light-emitting direction of the light guide plate in multiple directions. A connecting component is provided between the frame and the frame to fix the frame to the frame.

[0005] By adopting the above technical solution, when it is necessary to remove the light-shielding panels, all the light-shielding panels can be removed as a whole by removing the frame, or a single light-shielding panel can be removed from the frame, which is simple to operate; in addition, the installation angle of the light-shielding panels can be adjusted as needed during installation, so as to facilitate the adjustment of the angle of the light-shielding panels relative to the light guide plate.

[0006] A further feature of this invention is that the connecting component is fixedly sleeved at the corner of the frame, the connecting component fits the outline of the frame to form a corner, the end of the connecting component near the frame forms a mounting part, and the frame is fixedly connected to the frame through the mounting part.

[0007] By adopting the above technical solution, the connecting components are fitted to the outline of the rack to form a corner, which can soften the overly rigid rack outline to improve aesthetics and effectively connect the frame.

[0008] A further feature of this invention is that: a first mounting groove is provided at the bottom of the mounting part, a retaining member is fixedly connected in the first mounting groove, the retaining member is provided with a second mounting groove that engages with the frame, the frame is fixedly connected to the retaining member through the second mounting groove, and an elastic member is provided between the first mounting groove and the retaining member.

[0009] By adopting the above technical solution and setting up retaining and elastic components, the frame can be easily assembled and disassembled relative to the machine frame, making the operation convenient and easy to implement.

[0010] A further feature of this invention is that a limiting block protrudes from one end of the retaining member near the first mounting groove, and a baffle that cooperates with the limiting block is provided in the first mounting groove. The elastic member drives the limiting block to abut against the baffle, thereby fixing the retaining member to the connecting assembly.

[0011] By adopting the above technical solution, and by setting limit blocks and baffles, the clamping effect of the clamping component on the frame is achieved. The structure is simple and easy to implement.

[0012] A further feature of this invention is that: a first protrusion is provided at the top of the first mounting groove, a second protrusion is provided at one end of the retaining member near the first mounting groove, the first protrusion and the second protrusion are arranged opposite to each other, and the elastic member is sleeved on the first protrusion and the second protrusion.

[0013] By adopting the above technical solution and setting the first and second protrusions, it is ensured that the elastic element always maintains the force along the direction of the first and second protrusions during the deformation process, thus preventing the elastic element from coming out and losing its function of holding the frame, and ensuring the direction and effect of the force of the elastic element.

[0014] A further feature of this invention is that it includes a lamp bead plate disposed on the back of the light guide plate and a heat sink disposed on the back of the lamp bead plate. The heat sink covers the internal space defined by the frame outline, and the heat dissipation area of ​​the heat sink is greater than or equal to the heat-generating area of ​​the lamp bead plate.

[0015] By adopting the above technical solution and design, the volume of the LED board and heat sink is maximized within the casing. The former ensures the large size of the LED board required for the "dual high display" flat panel lamp, while the latter reduces the reliance on fan cooling, thereby reducing fan power and achieving the effect of reducing noise.

[0016] A further feature of this invention is that it also includes a host unit, wherein one end of the heat sink away from the LED bead plate is connected to the frame to form a heat dissipation surface, the host unit is disposed on the heat dissipation surface, and the heat dissipation area of ​​the heat sink is greater than or equal to the heat-generating area of ​​the host unit.

[0017] By adopting the above technical solution, the host is placed on the heat dissipation surface, so that the heat sink can dissipate heat for the LED board and the host in addition to the LED board, without the need to add an extra heat dissipation device, thus reducing costs.

[0018] A further feature of this invention is that the host includes a heat-conducting plate and a power supply, a silent fan, a display panel, and a dimming plate disposed on the heat-conducting plate, wherein the heat-conducting plate is in contact with the heat dissipation surface of the heat sink.

[0019] By adopting the above technical solution, the power supply, silent fan, display panel and dimming board are all thermally connected to the heat sink through the heat conduction plate to achieve the heat dissipation effect.

[0020] A further feature of this invention is that: a mounting plate is movably disposed on the frame, the light-shielding plate is mounted on the frame via the mounting plate, the mounting plate is provided with a damping structure, and the mounting plate is rotatably connected to the frame via the damping structure, so that the light-shielding plate can be angled relative to the frame.

[0021] By adopting the above technical solution and setting a damping structure on the mounting plate, the light shield can be freely rotated on the frame and can be hovered at any angle, which facilitates the control of the beam direction and the elimination of stray light.

[0022] A further feature of this invention is that: a hollow C-shaped region is provided within the mounting plate to accommodate the frame, an extension extends from the edge of the hollow C-shaped region, the damping structure is a friction plate circumferentially disposed on the hollow C-shaped region and the extension, and a fastener is provided through the extension, the fastener being used to adjust the friction force between the friction plate and the frame.

[0023] By adopting the above technical solution, the light-blocking sheet can be hovered at any angle on the frame.

[0024] In summary, this utility model has the following beneficial effects:

[0025] 1. The frame is independent of the main frame, and the light shield is set on the frame. When the light shield needs to be removed, all the light shields can be removed by removing the frame, or a single light shield can be removed from the frame, which is simple to operate. In addition, the light shield is set on the frame, and the installation angle of the light shield can be adjusted as needed during installation, so as to facilitate the adjustment of the angle of the light shield relative to the light guide plate.

[0026] 2. A connecting component is used to fit the outline of the frame to form a corner. The end of the connecting component near the frame forms a mounting part. The frame is fixedly connected to the frame through the mounting part. This can soften the overly rigid frame outline to improve aesthetics and effectively connect the frame.

[0027] 3. The use of clamping and elastic components facilitates the assembly and disassembly of the frame relative to the machine frame, making operation convenient and easy to implement.

[0028] 4. Heat sinks are used to fill the internal space defined by the rack outline. The heat dissipation area of ​​the heat sink is greater than or equal to the heat-generating area of ​​the LED board, reducing reliance on fan cooling, thereby reducing fan power and achieving the effect of reducing noise.

[0029] 5. By placing the main unit on the heat dissipation surface, the heat sink can dissipate heat for both the LED chip board and the main unit, eliminating the need for additional heat dissipation devices and reducing costs. Attached Figure Description

[0030] Figure 1 This is a front perspective view of the present invention.

[0031] Figure 2 This is a utility model Figure 1 A magnified view of A in the middle.

[0032] Figure 3 This is a perspective view of the back of this utility model.

[0033] Figure 4 This is a schematic diagram of the internal structure of the host of this utility model.

[0034] Figure 5 This is an exploded view of this utility model.

[0035] Figure 6 This is a cross-sectional view of the connection component and the retaining member of this utility model when they are connected.

[0036] Figure 7 This is a schematic diagram of the connection component and frame of this utility model.

[0037] Figure 8 This is a schematic diagram of Embodiment 2 of this utility model.

[0038] In the diagram: 1. Frame; 2. Light guide plate; 3. Frame; 31. Mounting blade; 311. Hollow C-shaped area; 312. Extension; 32. Friction plate; 33. Fastener; 4. Light shield; 5. Connecting assembly; 51. Mounting part; 511. First mounting slot; 512. Baffle; 513. First protrusion; 6. Holding part; 61. Second mounting slot; 62. Elastic element; 63. Limiting block; 64. Second protrusion; 7. Lamp bead plate; 8. Heat sink; 81. Heat dissipation surface; 9. Main unit; 91. Heat conduction plate; 92. Power supply; 93. Silent fan; 94. Display panel; 95. Dimming plate. Detailed Implementation

[0039] The present invention will be further described below with reference to the accompanying drawings.

[0040] A type of high-visibility flat panel light for video and audio production, such as Figure 1-7 As shown, the system includes a frame 1 and a light guide plate 2 located within the frame 1. A frame 3 is provided at the light-emitting end of the light guide plate 2. Several light-shielding plates 4 are arranged circumferentially on the frame 3, with the light-shielding plates 4 angled to the frame 3 to restrict the light-emitting direction of the light guide plate 2 from multiple directions. A connecting component 5 is provided between the frame 1 and the frame 3 to fix the frame 3 to the frame 1. The frame 3 is spaced apart from the frame 1, and the area of ​​the frame 3 is greater than or equal to the light-emitting area of ​​the light guide plate 2. Preferably, there are four light-shielding plates 4, located at the top, bottom, left, and right positions of the frame 3, corresponding to the light-emitting direction of the light guide plate 2. It should be noted that the number of light-shielding plates 4 is not limited to four; additional light-shielding positions (upper left, lower left, upper right, and lower right) can be added to the existing four positions. Adding light-shielding plates 4 according to the required positions further controls the beam direction, improving the stray light elimination effect. This is because the system is independent of the frame 1. The frame 3 outside the frame 1 has light-shielding plates 4 installed on it. When it is necessary to remove the light-shielding plates 4, all the light-shielding plates 4 can be removed by removing the frame 3 as a whole, or a single light-shielding plate 4 can be removed from the frame 3. The operation is simple. With this structure, adding multiple light-shielding plates 4 will not cause cumbersome disassembly and assembly problems. In addition, the light-shielding plates 4 are installed on the frame 3. During installation, the installation angle of the light-shielding plates 4 can be adjusted as needed, so as to facilitate the adjustment of the angle of the light-shielding plates 4 relative to the light guide plate 2.

[0041] Preferably, the connecting component 5 is fixedly sleeved at the corner of the frame 1, and the connecting component 5 fits against the contour of the frame 1 to form a corner protector. The end of the connecting component 5 near the frame 3 forms a mounting part 51, and the frame 3 is fixedly connected to the frame 1 through the mounting part 51. Preferably, there are four connecting components 5, located at the four corners of the frame 1 respectively. The mounting parts 51 correspond to the four corners of the frame 3 respectively, clamping and fixing the four corners, thereby fixing the frame 3 to the frame 1 through the mounting parts 51. It should be noted that the connecting components 5 are not limited to four; any number of connecting components 5 that can fix the frame 3 to the frame 1 are included in the scope of protection of this application. By fitting the connecting component 5 against the contour of the frame 1 to form a corner protector, the overly rigid contour of the frame 1 can be softened to improve aesthetics, and the frame 3 can be effectively connected.

[0042] Preferably, the bottom of the mounting part 51 is provided with a first mounting groove 511, and a retaining member 6 is fixedly connected in the first mounting groove 511. The retaining member 6 is provided with a second mounting groove 61 that engages with the frame 3. The frame 3 is fixedly connected to the retaining member 6 through the second mounting groove 61. An elastic member 62 is provided between the first mounting groove 511 and the retaining member 6. Multiple retaining members 6 form an initial contour in the initial state. The contour of the frame 3 matches the initial contour and is larger than the initial contour. When installing the frame 3, one end of the frame 3 first enters the second mounting groove 61 of the retaining member 6. Then, an external force is applied to the retaining member 6 in the direction close to the frame 1, causing the elastic member 62 to contract and drive the retaining member 6 to move in the direction close to the frame 1. This allows the other end of the frame 3 to be engaged in the second mounting groove 61 of another retaining member 6. At this time, the frame 3 is released, and the elastic member 62 rebounds, holding the frame 3 between the retaining members 6 in relative positions, forming a fixed connection between the frame 3 and the frame 1. When disassembling the frame 3, an external force is applied to one of the retaining members 6 in the direction close to the frame 1, causing the frame 3 to disengage from the retaining forces of the two retaining members 6 in relative positions, thereby allowing the frame 3 to disengage from the second mounting groove 61 and complete the disassembly. By setting the retaining members 6 and the elastic member 62, it is convenient to assemble and disassemble the frame 3 relative to the frame 1. The operation is convenient and easy to implement.

[0043] Preferably, a limiting block 63 protrudes from one end of the retaining member 6 near the first mounting groove 511. A baffle 512, which engages with the limiting block 63, is provided within the first mounting groove 511. The elastic member 62 drives the limiting block 63 to abut against the baffle 512, thereby fixing the retaining member 6 to the connecting assembly 5. Two limiting blocks 63 and two baffles 512 are configured, and the protruding direction of the limiting block 63 corresponds to the opening direction of the baffle 512. By setting the limiting block 63 and the baffle 512, the retaining member 6 achieves a retaining effect on the frame 3. The structure is simple and easy to implement.

[0044] Preferably, a first protrusion 513 is provided at the top of the first mounting groove 511, and a second protrusion 64 is provided at one end of the retaining member 6 near the first mounting groove 511. The first protrusion 513 and the second protrusion 64 are arranged opposite to each other, and the elastic member 62 is sleeved on the first protrusion 513 and the second protrusion 64. By providing the first protrusion 513 and the second protrusion 64, it is ensured that the elastic member 62 always maintains a force along the direction of the first protrusion 513 and the second protrusion 64 during deformation, preventing the elastic member 62 from dislodging and losing its function of retaining the frame 3, and ensuring the direction and effect of the force of the elastic member 62.

[0045] Preferably, the light guide plate 2 also includes an LED bead board 7 disposed on the back side of the light guide plate 2 and a heat sink 8 disposed on the back side of the LED bead board 7. The heat sink 8 covers the internal space defined by the outline of the frame 1, and the heat dissipation area of ​​the heat sink 8 is greater than or equal to the heat-generating area of ​​the LED bead board 7. The LED bead board 7 is provided with LED beads electrically connected to the power supply 92. The heat sink 8 is in close contact with the back side of the LED bead board 7, and its area is at least equal to the area of ​​the LED bead board 7. The area of ​​the LED bead board 7 is the maximum area formed by the internal space of the housing. Through the above design, the volume of the LED bead board 7 and the heat sink 8 are maximized within the housing. The former ensures the large volume requirement of the "dual high display" flat panel light for the LED bead board 7, while the latter reduces the reliance on fan cooling, thereby reducing fan power and achieving the effect of reducing noise.

[0046] Preferably, the device also includes a host unit 9. The end of the heat sink 8 facing away from the LED bead board 7 is connected to the frame 1 to form a heat dissipation surface 81. The host unit 9 is disposed on the heat dissipation surface 81, and the heat dissipation area of ​​the heat sink 8 is greater than or equal to the heat-generating area of ​​the host unit 9. By disposing the host unit 9 on the heat dissipation surface 81, the heat sink 8 can dissipate heat not only for the LED bead board 7 but also for the host unit 9, eliminating the need for additional heat dissipation devices and reducing costs.

[0047] Preferably, the host 9 includes a heat-conducting plate 91 and a power supply 92, a silent fan 93, a display panel 94, and a dimming plate 95 disposed on the heat-conducting plate 91. The heat-conducting plate 91 is in contact with the heat dissipation surface 81 of the heat sink 8. The heat-conducting plate 91 is made of sheet metal with thermal conductivity. The power supply 92, the silent fan 93, the display panel 94, and the dimming plate 95 are located in the same circuit and are all thermally connected to the heat sink 8 through the heat-conducting plate 91 to achieve a heat dissipation effect.

[0048] Example 2:

[0049] A type of high-visibility flat panel light for video and audio production, such as Figure 8As shown, the difference between this embodiment and specific embodiment one is that: a mounting plate 31 is movably disposed on the frame 3, the light shield 4 is mounted on the frame 3 through the mounting plate 31, a damping structure is disposed on the mounting plate 31, the mounting plate 31 is rotatably connected to the frame 3 through the damping structure, so that the light shield 4 can be angled relative to the frame 3, a hollow C-shaped region 311 is disposed inside the mounting plate 31 to accommodate the frame 3, an extension portion 312 extends from the edge of the hollow C-shaped region 311, the damping structure is a friction plate 32 circumferentially disposed on the hollow C-shaped region 311 and the extension portion 312, a fastener 33 is disposed through the extension portion 312, and the fastener 33 is used to adjust the friction force between the friction plate 32 and the frame 3. The friction plate 32 can be made of hard material, such as metal, or soft material, such as resin. The fastener 33 can be a bolt. The extension 312 is clamped by the fastener 33. The friction plate 32 located in the hollow C-shaped region 311 and the upper part of the extension 312 contacts the friction plate 32 located in the hollow C-shaped region 311 and the lower part of the extension 312, forming a clamping force of the friction plate 32 in the hollow C-shaped region 311 on the frame 3. By adjusting the clamping force of the fastener 33 on the extension 312, the fixing effect of the light shield on the frame 3 can be controlled. In a suitable position, the friction force of the friction plate 32 on the frame 3 is sufficient to prevent the light shield from falling off the frame 3 and to enable the light shield to be suspended at any angle on the frame 3, which is convenient for controlling the beam direction and eliminating stray light.

[0050] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A dual high-resolution video flat panel light, comprising a frame (1) and a light guide plate (2) located within the frame (1), characterized in that: The light guide plate (2) is provided with a frame (3) at the light-emitting end. The frame (3) is provided with a plurality of light-shielding plates (4) around its perimeter. The light-shielding plates (4) are set at an angle to the frame (3) to restrict the light-emitting direction of the light guide plate (2) in multiple directions. A connecting component (5) is provided between the frame (1) and the frame (3) to fix the frame (3) and the frame (1) through the connecting component (5).

2. The dual high-visual-resolution video flat panel light according to claim 1, characterized in that: The connecting component (5) is fixedly sleeved at the corner of the frame (1). The connecting component (5) fits the outline of the frame (1) to form a corner. The end of the connecting component (5) near the frame (3) forms a mounting part (51). The frame (3) is fixedly connected to the frame (1) through the mounting part (51).

3. The dual high-resolution video flat panel light according to claim 2, characterized in that: The bottom of the mounting part (51) is provided with a first mounting groove (511), and a retaining member (6) is fixedly connected in the first mounting groove (511). The retaining member (6) is provided with a second mounting groove (61) that engages with the frame (3). The frame (3) is fixedly connected to the retaining member (6) through the second mounting groove (61). An elastic member (62) is provided between the first mounting groove (511) and the retaining member (6).

4. A dual high-visual-resolution video flat panel light according to claim 3, characterized in that: The retaining member (6) has a limiting block (63) protruding from one end near the first mounting groove (511). The first mounting groove (511) is provided with a baffle (512) that cooperates with the limiting block (63). The elastic member (62) drives the limiting block (63) to abut against the baffle (512), so that the retaining member (6) is fixedly connected to the connecting assembly (5).

5. A dual high-resolution video flat panel light according to claim 4, characterized in that: The top of the first mounting groove (511) is provided with a first protrusion (513), and the end of the retaining member (6) near the first mounting groove (511) is provided with a second protrusion (64). The first protrusion (513) and the second protrusion (64) are arranged opposite to each other, and the elastic member (62) is sleeved on the first protrusion (513) and the second protrusion (64).

6. A dual high-resolution video flat panel light according to claim 1, characterized in that: It also includes a lamp bead plate (7) disposed on the back of the light guide plate (2) and a heat sink (8) disposed on the back of the lamp bead plate (7). The heat sink (8) covers the internal space defined by the outline of the frame (1). The heat dissipation area of ​​the heat sink (8) is greater than or equal to the heat-generating area of ​​the lamp bead plate (7).

7. A dual high-resolution video flat panel light according to claim 6, characterized in that: It also includes a host (9), the end of the heat sink (8) away from the lamp bead plate (7) is connected to the frame (1) to form a heat dissipation surface (81), the host (9) is disposed on the heat dissipation surface (81), and the heat dissipation area of ​​the heat sink (8) is greater than or equal to the heat generation area of ​​the host (9).

8. A dual high-resolution video flat panel light according to claim 7, characterized in that: The host (9) includes a heat-conducting plate (91) and a power supply (92), a silent fan (93), a display panel (94) and a dimming plate (95) disposed on the heat-conducting plate (91). The heat-conducting plate (91) is in contact with the heat dissipation surface (81) of the heat sink (8).

9. A dual high-resolution video flat panel light according to claim 1, characterized in that: The frame (3) is movably provided with a mounting plate (31), and the light shield (4) is mounted on the frame (3) through the mounting plate (31). The mounting plate (31) is provided with a damping structure, and the mounting plate (31) is rotatably connected to the frame (3) through the damping structure so that the light shield (4) can be angled relative to the frame (3).

10. A dual high-resolution video flat panel light according to claim 9, characterized in that: The mounting plate (31) is provided with a hollow C-shaped area (311) for accommodating the frame (3). An extension (312) extends from the edge of the hollow C-shaped area (311). The damping structure is a friction plate (32) circumferentially arranged on the hollow C-shaped area (311) and the extension (312). A fastener (33) is provided through the extension (312). The fastener (33) is used to adjust the friction force between the friction plate (32) and the frame (3).

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