LED film and television lamp

Abstract

The utility model provides an LED film and television lamp. The LED film and television lamp comprises a shell, a light source plate and a pressing block. Wherein the light source plate is arranged in the shell. A plurality of light-emitting parts are integrated on the light source plate. The pressing block comprises a body and a hollow cavity located in the inner side of the body. The pressing block is arranged on one side of the light-emitting face of the light source plate or the light source plate is arranged in the hollow cavity, and light emitted by the light source plate is output to the outside of the shell through an opening, close to the outside of the shell, of the hollow cavity. The body comprises an inclined wall defining a hollow cavity, and the included angle between the surface where the inclined wall is located and the normal direction of the light-emitting face of the light source plate is an acute angle. According to the LED film and television lamp, the inclined wall is arranged, so that the light emitting efficiency of the LED film and television lamp can be improved under the conditions that the power is constant and the heat dissipation burden and the size of the lamp holder are not increased, and the light emitting illuminance of a bare lamp of the LED film and television lamp under the condition that a lighting effect accessory is not additionally arranged is improved.

Description

Technical Field

[0001] This utility model relates to the field of film and television equipment technology, and in particular to an LED film and television light. Background Technology

[0002] Professional film and television lighting is an indispensable piece of equipment in film and television shooting. Cinematographers need to use film and television lights to create lighting conditions on the shooting location that cannot be achieved by natural light, so that the captured images can meet creative needs, tone, and the creator's personal characteristics. Compared with traditional discharge and heat conversion light fixtures such as tungsten filament lamps and dysprosium lamps, LED film and television lights use light-emitting chips to emit light, which are relatively smaller in size and have higher environmental friendliness and safety. Therefore, LED film and television lights have gradually become the mainstream type of film and television lighting.

[0003] Compared to ordinary household lights, LED film and television lights have extremely high requirements in terms of parameters or indices such as illuminance, luminous flux, adjustable brightness levels, color rendering index, color temperature diversity, and color diversity. To meet these requirements, existing LED film and television lights have gradually developed more technologies at the levels of light-emitting chips, bare lamp structure, heat dissipation, and optical accessories. For example, using COB (Chipon Board) packaging technology, more LED chips can be integrated into a smaller volume to form a high-brightness light source and improve the illuminance of film and television lights. At the same time, using higher power LED chips can achieve higher luminous flux. Utilizing a rich ecosystem of optical accessories can meet more personalized light control needs. For example, by using softboxes of different shapes, the hard light of the bare lamp can be converted into soft light output. Using reflectors, the light from the bare lamp can be focused and the size and shape of the light spot can be controlled.

[0004] However, the increased power of LED chips leads to a corresponding increase in the area of ​​the lamp head and the size of the accessory mount. On the one hand, the heat dissipation system faces challenges, and on the other hand, the size of the optical accessories also needs to be increased accordingly. All of these factors will increase the cost of LED film and television lights and reduce their ease of use. Utility Model Content

[0005] One objective of this invention is to provide an LED film and television light that, with a fixed power and without increasing the heat dissipation burden or lamp head size, has a high light output efficiency and can efficiently meet the user's needs.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] An LED film and television light, comprising:

[0008] case;

[0009] A light source board is disposed inside the housing, and the light source board integrates multiple light-emitting elements;

[0010] The pressure block includes a body and a hollow cavity located inside the body. The pressure block is disposed on one side of the light-emitting surface of the light source plate, or the light source plate is disposed inside the hollow cavity. The light emitted by the light source plate is output to the outside of the housing through an opening in the hollow cavity near the outside of the housing. The body includes an inclined wall surrounding the hollow cavity, and the angle between the normal directions of the light-emitting surface of the light source plate and the normal directions is an acute angle.

[0011] In an exemplary embodiment, the acute angle formed between the surface of the inclined wall and the normal direction of the light-emitting surface of the light source plate is 3° to 60°.

[0012] In an exemplary embodiment, the acute angle formed between the surface of the inclined wall and the normal direction of the light-emitting surface of the light source plate is 30° or 5°.

[0013] In one exemplary embodiment, the inclined wall is provided with a diffuse reflection layer, the diffuse reflection layer comprising a diffuse reflection material, the diffuse reflection material comprising one or more combinations of barium sulfate, titanium dioxide, zirconium oxide, and aluminum oxide.

[0014] In one exemplary embodiment, the light-emitting element includes one or more of the following: red light chip, blue light chip, green light chip, cool white light chip, warm white light chip, cyan light chip, amber light chip, and yellow light chip.

[0015] In an exemplary embodiment, the LED video light includes a lens disposed on the end of the pressure block away from the light source plate, and the lens is arranged at the opening of the hollow cavity, such that light emitted from the light source plate passes through the hollow cavity and the lens and is directed to the outside of the housing.

[0016] In an exemplary embodiment, the body has a stepped portion at the end away from the light source plate, and the lens is disposed on the stepped portion.

[0017] In an exemplary embodiment, the LED video light includes a lens holder, the lens holder is disposed on the holder, the inner side of the lens holder is provided with a through hole, the through hole is arranged corresponding to the lens, and the lens holder is pressed against the edge of the lens to fix the lens.

[0018] In one exemplary embodiment, the LED video light includes an accessory connection assembly for detachably connecting external optical accessories. The accessory connection assembly is connected to the pressure block and is located on the side of the pressure block away from the light source plate.

[0019] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects:

[0020] This utility model of an LED film and television light, by setting the angle between the inner wall of the pressure block and the normal direction of the light-emitting surface of the light source board to an acute angle, redirects the light originally scattered or lost by the light source board, allowing more light to be output to the outside of the housing. This effectively improves the utilization rate of the light emitted by the light source board and enhances the light output efficiency of the LED film and television light. Therefore, it can be understood that this application can effectively improve the light output efficiency of the LED film and television light through structural design without increasing the power of the LED chip, which is beneficial to improving the illuminance of the bare LED film and television light without adding light effect accessories. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of an LED film and television light according to one embodiment of the present invention.

[0022] Figure 2 yes Figure 1 The image shows a cross-sectional view of an LED film and television light.

[0023] Figure 3 yes Figure 2 A magnified view of part A of the LED film and television light shown.

[0024] Figure 4 This is a three-dimensional structural diagram of an LED film and television light according to another embodiment of the present invention, with some parts omitted.

[0025] Figure 5 yes Figure 4 The image shows a cross-sectional view of an LED film and television light.

[0026] Figure 6 yes Figure 4 The image shown is an exploded view of an LED film and television light.

[0027] Figure 7 This is a schematic diagram of the structure of the light source plate according to one embodiment of the present invention.

[0028] Figure 8 yes Figure 7 A schematic diagram of the structure at point B.

[0029] The annotations in the attached figures are explained as follows:

[0030] 100. LED film and television light; 10. Housing; 11. Window; 12. Heat dissipation hole; 20. Light source board; 21. Light-emitting surface; 22. Back side; 23. Board body; 24. Light-emitting component; 241a. Blue light chip; 241b. Red light chip; 241c. Green light chip; 241d. Cool white light-emitting component; 241e. Warm white light-emitting component; 25. Light-emitting area; 26. Terminal; 30. Pressing block; 31. Body; 311. Sloping wall; 312. Main body; 313. Extension; 314. Groove; 315. Mounting Components; 315a, Assembly hole; 316, Outer edge; 316a, Second connecting hole; 317, Mounting part; 32, Hollow cavity; 33, First opening; 34, Second opening; 35, Stepped part; 351, Support wall; 352, Vertical wall; 40, Lens; 50, Lens clamping block; 51, Through hole; 52, Main body; 53, Protruding edge; 54, Connecting part; 541, First connecting hole; 60, Accessory connecting assembly; 61, Bayonet structure; 62, Electrical connection terminal; 70, Lamp holder; 71, Fixing part; 80, Cooling fan. Detailed Implementation

[0031] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0032] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back) are merely for the convenience of describing this application 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. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] This utility model provides an LED film and television light 100, which has high light output efficiency under the condition of constant power and without increasing heat dissipation burden or lamp head size, effectively enhancing the usability of the LED film and television light 100 of this application. The specific solution is described through the following embodiments.

[0035] Please see Figures 1 to 3 The LED film and television light 100 includes a housing 10 and a light source board 20. The light source board 20 emits light. The two opposite sides of the light source board 20 are a light-emitting surface 21 and a back surface 22, respectively. A window 11 is provided on the housing 10. The light source board 20 is located inside the housing 10, and the light-emitting surface 21 of the light source board 20 faces the window 11, so that the light emitted by the light source board 20 can pass through the window 11 and reach the outside of the housing 10.

[0036] Specifically, see Figure 4 , Figure 5 The light source board 20 includes a board body 23 and a plurality of light-emitting elements 24 integrated on one side of the board body 23. It can be understood that the side of the light source board 20 with the plurality of light-emitting elements 24 is the light-emitting surface 21, and the opposite side is the back surface 22.

[0037] For example, see Figure 6 Multiple light-emitting elements 24 in the light source board 20 are integrated in the middle of the board body 23 to form a light-emitting area 25. The light-emitting area 25 is arranged corresponding to the window 11 of the housing 10 to ensure that the light emitted by the light-emitting elements 24 can pass through the window 11 of the housing 10 and be projected to the outside of the housing 10.

[0038] Each light-emitting element 24 includes at least one light-emitting chip. The light-emitting chip can be a surface-mount chip or a bare chip, etc. Specifically, in this embodiment, the light-emitting chip is a bare chip. The light-emitting chip can be a red light chip 241b that emits red light, a blue light chip 241a that emits blue light, a green light chip 241c that emits green light, a cool white light chip that emits cool white light, a warm white light chip that emits warm white light, a cyan light chip that emits cyan light, an amber light chip that emits amber light, or a yellow light chip that emits yellow light, etc.

[0039] A light-emitting element 24 includes one or more of the aforementioned light-emitting chips. For example, a light-emitting element 24 is an RGB light-emitting element, including three light-emitting chips, namely a red light chip 241b, a blue light chip 241a, and a green light chip 241c, so that the light-emitting element 24 can emit monochromatic light of red, blue, or green, or the light-emitting element 24 can emit mixed light of red and green, mixed light of red and blue, mixed light of red and green, or white light formed by mixing red, blue, and green.

[0040] It is understood that the multiple light-emitting elements 24 on the light source board 20 can be multiple identical light-emitting elements 24; or multiple different light-emitting elements 24. For example, the light source board 20 includes two or three different light-emitting elements 24, so that the light source board 20 can emit multi-color light sources.

[0041] For example, please see Figure 7 and Figure 8 , Figure 7 The light source includes three different types of light-emitting elements 24: multiple cool white light-emitting elements 241d (each containing a cool white light chip), multiple warm white light-emitting elements 241e (each containing a warm white light chip), and multiple RGB light-emitting elements. These multiple cool white light-emitting elements 241d, warm white light-emitting elements 241e, and RGB light-emitting elements are fixed on the substrate 23 of the light source board 20 according to a certain arrangement rule or pattern, enabling the light source board 20 to form a five-color light source. Furthermore, these chips are integrated on the substrate 23 of the light source board 20 and covered with encapsulating adhesive and / or phosphor layers.

[0042] In other embodiments, the light source board 20 can further add one or more light-emitting chips of colors such as cyan, yellow, and amber to form a six-color light source, a seven-color light source, etc. The light source board 20 can also be a four-color light source (white, red, green, blue), a four-color light source (yellow, red, blue, green), a three-color light source (RGB), a two-color light source (cool white, warm white), etc. Through PWM control, the brightness of different colored light-emitting chips can be controlled. Adjusting each PWM signal can produce different light mixing effects from the multi-color light-emitting chips, thereby adjusting the color, color temperature, brightness, and other parameters of the light source. In the embodiments of this application, multiple light-emitting chips can mix light to produce white light with adjustable color temperature, or white light with color variations (e.g., yellowish white light, reddish white light, pinkish white light, etc.).

[0043] In some embodiments, each light-emitting chip has a phosphor layer, so that the light emitted by the light-emitting element 24 passes through the phosphor layer and is then directed to the outside of the housing 10. The phosphor layer can change the color emitted by the light-emitting element 24. For example, if the light-emitting chip in the light-emitting element 24 is blue and the phosphor layer is yellow, a portion of the light emitted by the blue chip will be absorbed by the phosphor to form longer wavelengths of yellow light, red light, etc., so that the light emitted by the light-emitting element 24 when powered on is ultimately white. When the light-emitting element 24 includes multi-color chips, the phosphor layer can absorb a portion of the light emitted by different color chips to excite and generate more wavelengths of different colors, supplementing the spectrum lacking in the self-emitting wavelengths of the light-emitting chips, allowing the light source board 20 to produce white light closer to natural light. Furthermore, improving the color rendering index of the light-emitting element 24 makes the light emitted by the light-emitting element 24 more vibrant and bright, thereby effectively improving the visual effect of the LED film and television light 100. By selecting a suitable phosphor layer, the variable color temperature range of the light source can also be changed.

[0044] For example, the fluorescent layer can be a phosphor film. The phosphor film coats the light-emitting chip. It should be noted that there are various ways to coat the light-emitting chip with a phosphor film. For example, the phosphor film can be directly coated on the outer surface of the light-emitting chip; or the phosphor film can be coated on the periphery of the light-emitting chip, but not in contact with the surface of the light-emitting chip, but separated from the light-emitting chip by a certain distance. The specific method can be set according to actual needs and is not limited here. Of course, the phosphor film can also be formed by spraying, deposition, dispensing, etc.

[0045] In some embodiments, the light source may also include a terminal 26, which may be disposed on one side surface of the light-emitting surface 21 of the plate 23 and arranged outside the light-emitting area 25. The terminal 26 is used for electrical connection of the light source.

[0046] Please see Figure 3 and Figure 5 The LED film and television light 100 includes a pressure block 30, which includes a body 31 and a hollow cavity 32 located inside the body 31. The hollow cavity 32 has openings at both ends. For ease of description, the opening at the end of the hollow cavity 32 near the light source plate 20 is defined as the first opening 33, and the opening at the end of the hollow cavity 32 near the outside of the housing 10 is defined as the second opening 34.

[0047] In some embodiments, the pressure block 30 may be disposed on one side of the light-emitting surface of the light source plate 20. For example, the body 31 of the pressure block 30 may be directly pressed against the surface of the plate 23 in an area where the light-emitting element 24 is not provided (e.g., Figure 3 (as shown); or, the body 31 in the pressure block 30 and the plate 23 in the light source are spaced apart (as shown). Figure 5 (As shown).

[0048] All of the above settings must ensure that the light-emitting area 25 of the light source plate 20 is arranged correspondingly to the first opening 33, so that the light emitted by the light source plate 20 enters the hollow cavity 32 from the first opening 33 and is emitted to the outside of the housing 10 from the second opening 34.

[0049] It should be noted that in other embodiments, the light source plate 20 may also be disposed inside the hollow cavity 32, so that the light emitted by the light source plate 20 can be directly output to the outside of the housing 10 through the second opening 34 via the hollow cavity 32.

[0050] This embodiment is illustrated by taking the example of the pressure block 30 being located on one side of the light-emitting surface of the light source plate 20.

[0051] Furthermore, the body 31 includes an inclined wall 311 that surrounds and forms a hollow cavity 32. The angle α between the surface of the inclined wall 311 and the normal direction of the light-emitting surface 21 of the light source plate 20 is an acute angle. In the figure, α represents the angle between the surface of the inclined wall 311 and the normal direction of the light-emitting surface of the light source plate 20. In other words, the cross-sectional area of ​​the hollow cavity 32 formed by the inclined wall 311 gradually increases from the direction of the light source plate 20 toward the outside of the housing 10.

[0052] Taking the light-emitting area 25 of the light source plate 20 as circular and the cross-section of the hollow cavity 32 as circular as an example, the hollow cavity 32 formed by the inclined wall 311 is a frustum structure, and the end where the first opening 33 is located is the small circular end, and the end where the second opening 34 is located is the large circular end.

[0053] The aforementioned inclined wall 311 can redirect the light emitted by the light source plate 20 that was originally scattered or lost, allowing more light to be output to the outside of the housing 10. This effectively improves the utilization rate of the light emitted by the light source plate 20 and enhances the light output efficiency of the LED film and television light 100. It is understood that this application can effectively improve the light output efficiency without increasing the power of the LED chip, which is beneficial for improving the illuminance of the bare LED film and television light 100 without adding any additional light effect accessories.

[0054] In some embodiments, the angle α formed between the surface of the inclined wall 311 and the normal direction of the light-emitting surface 21 of the light source plate 20 is 3° to 60°. The normal direction of the light-emitting surface 21 of the light source plate 20 is the direction perpendicular to the light-emitting surface.

[0055] For example, the angle α between the surface of the inclined wall 311 and the normal of the light-emitting surface 21 of the light source plate 20 is 3°. At this time, the inclined wall 311 can guide the light incident on the inclined wall 311 to the outside of the housing 10 through reflection, thereby effectively improving the illuminance of the LED film and television light 100.

[0056] Alternatively, the angle α between the surface of the inclined wall 311 and the normal of the light-emitting surface 21 of the light source plate 20 is 5°. In this case, the inclined wall 311 can guide more light incident on the inclined wall 311 to the outside of the housing 10, effectively reducing light loss and improving the light utilization rate of the light emitted by the light source plate 20.

[0057] Alternatively, the angle α between the surface of the inclined wall 311 and the normal of the light-emitting surface 21 of the light source plate 20 is 10° to 15°. In this case, the inclined wall 311 can make the light reflect more obviously after it comes into contact with the inclined wall 311, which can supplement the edge brightness of the light beam emitted by the light source plate 20 to the outside of the housing 10, thereby obtaining a uniform lighting effect.

[0058] Alternatively, the angle α between the surface of the inclined wall 311 and the normal of the light-emitting surface 21 of the light source plate 20 is 25° to 45°, for example, α is 30°. In this case, the inclined wall 311 can reflect or refract light that has not been incident on the outside of the housing 10 multiple times, so that the light can be effectively diffused. While improving the utilization rate of the light emitted by the light source plate 20, it also makes the light incident on the outside of the housing 10 more uniform and softer.

[0059] Alternatively, the angle α between the surface of the inclined wall 311 and the normal of the light-emitting surface 21 of the light source plate 20 is 60°. In this case, the inclined wall 311 can reflect most of the light emitted by the light source plate 20 multiple times, thereby making the brightness distribution of the light more uniform.

[0060] In some embodiments of this application, a diffuse reflection layer is provided on the inclined wall 311. The inclined wall 311 and the diffuse reflection layer work together to scatter light incident on the inclined wall 311 in various directions through the diffuse reflection layer, and some light returns to the hollow cavity 32. While improving the light utilization rate, it also makes the light in the hollow cavity 32 fully mixed, thereby effectively improving the light output uniformity of the LED film and television light 100.

[0061] The diffuse reflection layer includes a diffuse reflection material, which includes one or more of barium sulfate, titanium dioxide, zirconium oxide, and aluminum oxide.

[0062] Barium sulfate has a high reflectivity, so very little light incident on the inclined wall 311 is absorbed, and most of it is reflected to the outside of the housing 10 or into the hollow cavity 32, effectively reducing light energy loss and thus improving the output illuminance of the LED film and television light 100.

[0063] Zirconia is particularly suitable for reflecting light in the wavelength range of 450nm to 500nm, effectively improving the output luminous efficacy of LED film and television lights. Furthermore, zirconium oxide has a high melting point, making it suitable for long-term high-temperature environments. Therefore, the diffuse reflection layer structure including zirconium oxide is stable and will not undergo thermal expansion or oxidation leading to surface oxidation.

[0064] Titanium oxide is also particularly suitable for reflecting light in the wavelength range of 450nm to 500nm. Furthermore, titanium oxide possesses photocatalytic properties; under ultraviolet excitation, it can decompose impurities on the diffuse reflection layer, such as dust. Therefore, the diffuse reflection layer, including titanium oxide, can remain clean over long-term use, effectively preventing dust accumulation and subsequent decrease in reflectivity.

[0065] The diffuse reflective layer can include any one of barium sulfate, titanium dioxide, zirconium oxide, and aluminum oxide. It can also include any combination of two or three of these materials; for example, the reflective material could be a combination of barium sulfate and zirconium oxide, or a combination of barium sulfate, titanium dioxide, and zirconium oxide, or a combination of titanium dioxide and zirconium oxide. The diffuse reflective layer can also include a combination of all four materials simultaneously. It should be noted that the specific proportions can be set according to actual needs and are not limited here.

[0066] Please see Figure 4 and Figure 5 In some embodiments, the body 31 of the pressure block 30 includes a main body 312 and an extension 313. The main body 312 is arranged in a ring shape. The extension 313 is connected to the outer side of the main body 312 and extends from the light-emitting surface 21 of the light source plate 20 toward the back surface 22. In other words, the main body 312 and the extension 313 are arranged at an angle, so that a groove 314 is formed on the main body 52. ​​The light source plate 20 is disposed in the groove 314.

[0067] See Figure 5 and Figure 6 In some embodiments, the body 31 may further include an assembly portion 315. The assembly portion 315 is connected to the end of the extension portion 313 away from the main body portion 312, and the assembly portion 315 and the extension portion 313 are arranged at an angle. The assembly portion 315 is provided with an assembly hole 315a, so fasteners can be used to pass through the assembly hole 315a to connect with other structures inside the housing 10 of the LED video light 100, thereby fixing the pressure block 30 inside the housing 10.

[0068] The main body 31 includes a mounting portion 317, which is connected to the inner side of the main body 312 and extends from the back surface 22 of the light source plate 20 toward the light-emitting surface 21, such that the main body 312 and the mounting portion 317 are arranged at an angle. The inner sidewalls of the mounting portion 317 and the main body 312 are flush and together form an inclined wall 311.

[0069] In some embodiments, the LED video light 100 includes a lens 40, which is disposed on the end of the pressure block 30 away from the light source plate 20, and the lens 40 is arranged at the second opening 34 of the hollow cavity 32, so that the light emitted by the light source plate 20 is directed to the outside of the housing 10 through the hollow cavity 32 and the lens 40.

[0070] Lens 40 can converge or parallelize the light rays within the hollow cavity 32, further improving the utilization rate of light. Lens 40 can be a convex lens 40, a Fresnel lens 40, etc., and the specific type can be chosen according to actual needs; no restrictions are imposed here.

[0071] For example, a step portion 35 is provided at the second opening 34 of the body 31 corresponding to the inner wall of the hollow cavity 32, and the lens 40 is disposed on the step portion 35. The step portion 35 can prevent light from escaping directly from the gap between the lens 40 and the body 31 without passing through the lens 40, thus avoiding uneven brightness of the beam of light directed to the outside.

[0072] Furthermore, the stepped portion 35 includes a support wall 351 and a vertical wall 352 arranged at an angle to the support wall 351, the support wall 351 and the vertical wall 352 enclosing each other to form the stepped portion 35. The support wall 351 is used to support the lens 40 to ensure the stability of the lens 40.

[0073] In some embodiments, the LED video light 100 includes a lens holder 50, which is disposed on the holder 30. The lens holder 50 has a through hole 51 on its inner side, which is arranged correspondingly to the lens 40 to ensure that the light passing through the lens 40 can pass through the hole 51 and be directed to the outside of the housing 10.

[0074] The lens clamping block 50 is pressed against the edge of the lens 40 to fix the lens 40, further ensuring the stability and firmness of the lens 40.

[0075] For example, the lens retainer 50 includes a main body 52 and a protruding edge 53 disposed at one end of the main body 52. ​​The protruding edge 53 is disposed at an angle to the main body 52 to form a receiving groove, and the end of the mounting portion 317 in the body 31 of the retainer 30 away from the main body 312 is disposed in the receiving groove. The body 31 also includes an outer edge 316, which is connected to the outer side wall of the mounting portion 317. The surface of the outer edge 316 is used to abut against the end of the lens 40 body 52 away from the protruding edge 53 to support the lens retainer 50.

[0076] The protruding edge 53 encloses the inner wall of the lens 40 near the optical axis to form a through hole 51. The protruding edge 53 is pressed against the edge of the lens 40 away from the surface of the light source plate 20 to fix the lens 40 on the stepped portion 35 of the pressure block 30.

[0077] For example, the lens clamping block 50 is detachably mounted on the clamping block 30. For instance, the lens clamping block 50 includes a connecting portion 54 located at the other end of the main body 52. ​​The connecting portion 54 is angled to the main body 52 and extends in a direction away from the hollow cavity 32. A first connecting hole 541 is provided on the connecting portion 54 of the lens clamping block 50. A second connecting hole 316a is provided on the outer edge 316 of the main body 31 of the clamping block 30. By using a connector that passes through the first connecting hole 541 and the second connecting hole 316a, the connection and fixation between the lens clamping block 50 and the clamping block 30 can be achieved. The connector can be a screw, pin, etc.

[0078] In other embodiments, the lens pressing block 50 can also be directly pressed onto the pressing block 30 (e.g., Figure 3 (as shown), or the detachable connection between lens block 50 and block 30 can also be achieved through magnetic attraction, snap-fit ​​structure, etc.

[0079] exist Figure 3 In the illustrated embodiment, the LED video light 100 further includes an accessory connection assembly 60, which is connected to the pressure block 30 and located on the side of the pressure block 30 away from the light source plate 20. The accessory connection assembly 60 is used for detachably connecting external optical accessories to further enrich the optical effects of the light emitted by the LED video light 100. These external optical accessories can be softboxes, four-leaf baffles, projectors, reflectors, Fresnel lenses, etc.

[0080] The accessory connection component 60 may include a threaded structure, so that external optical accessories can be screwed onto the LED video light 100 of this application; or the accessory connection component 60 may include a bayonet structure 61, so that external optical accessories can be snapped onto the LED video light 100 of this application.

[0081] Please see Figure 2 and Figure 3 In some embodiments, the accessory connection component 60 includes an electrical connection terminal 62, through which an external optical accessory can form an electrical connection with the LED video light 100, thereby supplying power to the external optical accessory and enabling control of the external optical accessory.

[0082] Please see Figure 1 and Figure 2 The LED film and television light 100 includes a light holder 70, and a housing 10 is mounted on the light holder 70. The light holder 70 includes a fixing part 71 for connecting to an external support, so that the user can install and fix the LED film and television light 100 to the outside, thereby freeing up their hands and effectively improving the user experience.

[0083] The housing 10 is rotatably mounted on the lamp holder 70 so that the user can adjust the direction and angle of the light emitted by the LED film and television light 100 to meet the shooting needs of various scenarios.

[0084] In some embodiments, the housing 10 is provided with heat dissipation holes 12. When the LED film and television light 100 is in use, the light source board 20 usually generates heat, so the provision of heat dissipation holes 12 is conducive to heat dissipation, thereby facilitating the long-term use of the LED film and television light 100.

[0085] The LED film and television light 100 includes at least one cooling fan 80. The cooling fan 80 is located inside the housing 10 and on one side of the back surface 22 of the light source board 20. The cooling fan 80 effectively promotes airflow, driving heat out through the heat dissipation holes 12, which helps extend the service life of the LED film and television light 100.

[0086] The LED film and television light 100 of this application improves the utilization rate of the light emitted by the light source board 20 by setting the angle between the inner wall of the pressure block 30 and the normal direction of the light-emitting surface 21 of the light source board 20 to an acute angle. This reflects and redirects the light originally scattered or lost by the light source board 20, allowing more light to be output to the outside of the housing 10, thereby improving the light output efficiency of the LED film and television light 100. Therefore, it can be understood that this application can effectively improve the light output efficiency and increase the illuminance of the bare LED film and television light 100 without adding light effect accessories without increasing the power of the LED chip.

[0087] The above embodiments are merely illustrative examples of structures. The structures in each embodiment are not fixed combinations. In the absence of structural conflicts, the structures in multiple embodiments can be arbitrarily combined and used.

[0088] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. An LED film and television light, characterized in that, include: case; A light source board is disposed inside the housing, and the light source board integrates multiple light-emitting elements; The pressure block includes a body and a hollow cavity located inside the body. The pressure block is disposed on one side of the light-emitting surface of the light source plate, or the light source plate is disposed inside the hollow cavity. The light emitted by the light source plate is output to the outside of the housing through an opening in the hollow cavity near the outside of the housing. The body includes an inclined wall surrounding the hollow cavity, and the angle between the normal directions of the light-emitting surface of the light source plate and the normal directions is an acute angle.

2. The LED film and television light according to claim 1, characterized in that, The acute angle formed between the surface of the inclined wall and the normal direction of the light-emitting surface of the light source plate is 3° to 60°.

3. The LED film and television light according to claim 2, characterized in that, The acute angle formed between the surface of the inclined wall and the normal direction of the light-emitting surface of the light source plate is 30° or 5°.

4. The LED film and television light according to claim 1, characterized in that, The inclined wall is provided with a diffuse reflection layer, which includes a diffuse reflection material, and the diffuse reflection material includes one or more of barium sulfate, titanium dioxide, zirconium oxide, and aluminum oxide.

5. The LED film and television light according to claim 1, characterized in that, The light-emitting element includes at least one light-emitting chip, and the light-emitting chip is provided with a fluorescent layer, so that the light emitted by the light-emitting element is directed into the hollow cavity through the fluorescent layer.

6. The LED film and television light according to claim 1, characterized in that, The light-emitting element includes one or more of the following: red light chip, blue light chip, green light chip, cool white light chip, warm white light chip, cyan light chip, amber light chip, and yellow light chip.

7. The LED film and television light according to claim 1, characterized in that, The LED video light includes a lens, which is disposed on the end of the pressure block away from the light source plate, and the lens is arranged at the opening of the hollow cavity, so that the light emitted by the light source plate passes through the hollow cavity and the lens and is directed to the outside of the housing.

8. The LED film and television light according to claim 7, characterized in that, The body has a stepped portion at the end away from the light source plate, and the lens is disposed on the stepped portion.

9. The LED film and television light according to claim 8, characterized in that, The LED video light includes a lens holder, which is disposed on the holder. The lens holder has a through hole on its inner side, which is arranged corresponding to the lens. The lens holder is pressed against the edge of the lens to fix the lens.

10. The LED film and television light according to claim 1, characterized in that, The LED video light includes an accessory connection assembly for detachably connecting external optical accessories. The accessory connection assembly is connected to the pressure block and is located on the side of the pressure block away from the light source plate.

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