Stereoscopic light source type film and television lamp and film and television lamp system

Abstract

The invention provides a three-dimensional light source type film and television lamp and a film and television lamp system. The three-dimensional light source type film and television lamp comprises a plurality of lamp panels and a liquid cooling device. The lamp panel comprises a light source and a circuit board, and the light source is arranged on the circuit board. The liquid cooling device comprises a liquid cooling box, at least one liquid cooling cavity used for circulation of cooling liquid is formed in the liquid cooling box, the liquid cooling box is further provided with a liquid inlet and a liquid outlet which are communicated with the liquid cooling cavity, the liquid cooling device is provided with a plurality of heat conduction faces, included angles are formed between the heat conduction faces, and lamp panels are assembled on at least two heat conduction faces. Cooling liquid enters the liquid cooling cavity through the liquid inlet and is discharged from the liquid outlet. According to the three-dimensional light source type film and television lamp and the film and television lamp system, the good heat dissipation effect can be guaranteed, and the size is small.

Description

Technical Field

[0001] The present invention relates to the field of photographic equipment, and in particular to a stereoscopic light source type film and television lamp and a film and television lamp system. Background Art

[0002] At present, the light sources of film and television lamps can generally be divided into LED lamps and thermal light source lamps. Among them, thermal light source lamps generally include incandescent lamps, halogen lamps, etc. Due to the advantages of LED lamps such as small size and fast response, LED lamps are gradually replacing traditional thermal light source lamps. However, the power of LED lamps is often limited by the number of LEDs. In order to increase the power of LED lamps, more LED chips need to be added.

[0003] However, adding more LED chips will result in a larger area of ​​the LED lamp and a larger area of ​​the light-emitting surface of the LED lamp. Usually, when using film and television lamps, optical accessories with corresponding functions are set on the outside of the LED lamp according to usage requirements. If the light-emitting surface of the LED lamp is large, the volume of the optical accessories will be large, and it will be difficult for the optical accessories to achieve their optical effects. In addition, when the number of LED lamps is large and the light-emitting area is large, there are certain limitations on the heat dissipation of the LED lamp, which directly affects the normal operation of the high-power LED lamp. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art and to propose a stereoscopic light source type video lamp and a video lamp system which can ensure good heat dissipation effect and small size.

[0005] A stereoscopic light source type video lamp, comprising:

[0006] A plurality of light boards, each light board comprising a light source and a circuit board, wherein the light source is disposed on the circuit board; and

[0007] A cooling device, wherein the cooling device comprises a plurality of heat-conducting surfaces, the plurality of heat-conducting surfaces are arranged at an angle, at least two of the heat-conducting surfaces are equipped with the lamp boards, and at least two of the lamp boards emit light in different directions.

[0008] In one embodiment, the cooling device is a liquid cooling device, which includes a liquid cooling box, wherein the liquid cooling box is provided with at least one liquid cooling cavity for circulating cooling liquid, and the liquid cooling box is also provided with a liquid inlet and a liquid outlet connected to the liquid cooling cavity, and the cooling liquid enters the liquid cooling cavity through the liquid inlet and is discharged from the liquid outlet.

[0009] In one embodiment, the lamp panel is detachably mounted on the heat conducting surface.

[0010] In one embodiment, the liquid cooling box is in a polyhedral shape, and the liquid inlet and the liquid outlet are located on the same side of the liquid cooling box.

[0011] In one embodiment, the liquid cooling box includes a plurality of sub-liquid cooling boxes, each of the sub-liquid cooling boxes is provided with a sub-liquid cooling cavity, and the plurality of sub-liquid cooling boxes are spliced ​​with each other at an angle, and the sub-liquid cooling box includes a first mounting plate and a second mounting plate arranged opposite to each other, the outer side surface of the first mounting plate is the heat conducting surface, and the second mounting plate is provided with a first connecting pipe and a second connecting pipe connected to the sub-liquid cooling cavity.

[0012] In one embodiment, the liquid cooling device further includes a junction box, the liquid inlet and the liquid outlet are arranged on the junction box, a junction cavity is arranged in the junction box, and the junction cavity is communicated with the liquid cooling cavity.

[0013] In one embodiment, a mounting frame is further included, wherein the mounting frame is provided with a plurality of mounting surfaces inclined to each other, and the second mounting plate of the sub-liquid cooling box is mounted on the mounting surfaces.

[0014] In one embodiment, the second mounting plate of the sub-liquid cooling box is also provided with a circuit pipeline for passing the cable of the lamp board, and the mounting surface is provided with a first through hole, a second through hole and a third through hole, the first through hole is used to pass the first connecting tube, the second through hole is used to pass the second connecting tube, and the third through hole is used to pass the circuit pipeline.

[0015] In one embodiment, it further includes a base, the mounting bracket is mounted on the base, and the base is provided with a bayonet structure for detachable connection of the optical accessory.

[0016] In one embodiment, the liquid cooling box is an integrated structure.

[0017] In one embodiment, it also includes a liquid cooling box, in which a cooler and a pressure pump are provided. The liquid cooling box is also provided with a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe is connected to the liquid inlet, and the liquid outlet pipe is connected to the liquid outlet. The cooler is used to provide circulating coolant for the liquid cooling device, and the pressure pump is connected to the circulation.

[0018] In one embodiment, a power supply control device is further included, wherein the power supply control device is electrically connected to the light board and the liquid cooling box, and the power supply control device is used to supply power to the light board and the liquid cooling box.

[0019] In one embodiment, the power control device is electrically connected to the light board and the liquid cooling box respectively. After the power control device controls the liquid cooling box to start working, it controls the light board to be powered on.

[0020] In one embodiment, the cooling device includes a plurality of semiconductor refrigeration plates, wherein the cold surfaces of the semiconductor refrigeration plates face the lamp board, and the hot surfaces of the semiconductor refrigeration plates face away from the lamp board.

[0021] A video lighting system, comprising:

[0022] The above-mentioned stereoscopic light source type video light;

[0023] The optical accessory is arranged in front of the stereoscopic light source type video light, and the stereoscopic light source type video light is located on the optical axis of the optical accessory.

[0024] Compared with the prior art, the present invention has at least the following advantages:

[0025] The above-mentioned three-dimensional light source type movie lamp uses a liquid cooling device to take away the heat of the lamp board through the flowing cooling liquid, ensuring that the heat at various positions of the lamp board can be dissipated in time, thereby improving the heat dissipation effect of the liquid cooling device.

[0026] In addition, the liquid cooling device is provided with multiple heat conducting surfaces, which are arranged at an angle. The multiple heat conducting surfaces are used to install lamp boards respectively, so the area of ​​each lamp board can be relatively reduced, so that it is also convenient to dissipate the heat on each lamp board, further improving the heat dissipation effect of the liquid cooling device.

[0027] Thirdly, the above-mentioned three-dimensional light source type movie and television lamp can not only achieve a higher working power, but also, by arranging multiple lamp panels at an angle, the liquid cooling device has light-emitting surfaces at multiple angles, forming a three-dimensional light-emitting surface.

[0028] In the film and television lamp system, the diameter of the stereoscopic light source film and television lamp is relatively small, and the diameter of the optical accessories it is adapted to is also relatively small. On the one hand, the optical accessories with smaller diameters are smaller in size and easier to install; on the other hand, the optical accessories with smaller diameters have higher light conversion efficiency for the liquid cooling device, thereby improving the optical effect of the film and television lamp system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a three-dimensional diagram of the video lighting system of this embodiment;

[0030] Figure 2 yes Figure 1 An exploded view of the stereoscopic light source type video light shown;

[0031] Figure 3 yes Figure 2 The internal schematic diagram of the liquid cooling box of the stereoscopic light source type movie light shown;

[0032] Figure 4 yes Figure 3 A cross-sectional view of the liquid cooling box along the AA direction is shown;

[0033] Figure 5 is a three-dimensional diagram of a three-dimensional light source type movie light according to another embodiment;

[0034] Figure 6 yes Figure 5 An exploded view of a stereoscopic light source video light shown;

[0035] Figure 7 is a three-dimensional diagram of the video light system of this embodiment with optical accessories and a base;

[0036] Figure 8 yes Figure 7 An exploded view of the video lighting system shown;

[0037] Fig. 9 is a stereogram of the video lighting system shown at another angle;

[0038] Fig.10 yes Fig. 9 An exploded view of the video lighting system shown;

[0039] Fig.11 It is a structural schematic diagram of another embodiment of a cooling device for a stereoscopic light source type movie and television lamp of the present application.

[0040] The reference numerals are described as follows:

[0041] 1. Stereoscopic light source video lamp;

[0042] 10. three-dimensional light source; 11. lamp board; 111. LED light source; 112. circuit board; 113. electrical connection module; 114. cable; 13. lamp housing;

[0043] 20. Liquid cooling device; 21. Liquid cooling box; 201. Heat conducting surface; 202. Temperature sensor; 203. First heat conducting surface; 204. Second heat conducting surface; 205. Third heat conducting surface; 206. Fourth heat conducting surface; 207. Fifth heat conducting surface; 212 (312), liquid inlet; 213 (313), liquid outlet; 214, first cooling cavity; 215, second cooling cavity; 216, cooling channel; 217, fin; 218, high temperature reflux cavity; 219, baffle;

[0044] 22, sub-liquid cooling box; 221, first mounting plate; 222, second mounting plate; 223, first connecting pipe; 224, second connecting pipe; 225, circuit pipeline; 23, junction box; 231, first joint; 232, second joint;

[0045] 30, cooling device; 31, liquid cooling box; 320: semiconductor refrigeration plate; 303, first heat conducting surface; 305, third heat conducting surface; 307, fifth heat conducting surface; 300, cooling rack;

[0046] 40. base; 41. bayonet structure;

[0047] 50, mounting frame; 51, mounting surface; 511, first through hole; 512, second through hole; 513, third through hole;

[0048] 60. Liquid cooling box; 61. Pressure pump; 62. Fan; 63. Liquid inlet pipe; 64. Liquid outlet pipe;

[0049] 70. Power supply control device; 71, 72. Electric wire;

[0050] 2. Optical accessories. DETAILED DESCRIPTION

[0051] Although the present invention can be easily embodied in different forms of embodiments, only some of the specific embodiments are shown in the drawings and will be described in detail in this specification. It should be understood that this description should be regarded as an exemplary illustration of the principles of the invention and is not intended to limit the invention to that described herein.

[0052] Thus, a feature indicated in this specification will be used to illustrate one of the features of an embodiment of the present invention, rather than implying that each embodiment of the present invention must have the described feature. In addition, it should be noted that this specification describes many features. Although some features can be combined together to illustrate possible system designs, these features can also be used in other combinations that are not explicitly described. Thus, unless otherwise stated, the described combinations are not intended to be limiting.

[0053] In the embodiments shown in the drawings, the indications of directions (such as up, down, left, right, front and back) used to explain the structure and movement of various elements of the present invention are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the positions of these elements changes, the indications of these directions also change accordingly.

[0054] Movie lights can be used on stages, concerts, studios and other occasions. They can usually be used for stage lighting and also for photography and videography. For traditional high-power movie lights, the light source is usually a halogen lamp, and its luminous power can often reach thousands of watts or even tens of thousands of watts. For movie lights with LED light sources, when their luminous power reaches thousands of watts or tens of thousands of watts, the number of LED chips will be large. If all LED chips are arranged on the same plane, the layout area of ​​the LED chips will increase a lot. For LED light sources with a large layout area, the heat dissipation problem becomes a problem. At the same time, a large area of ​​LED light sources will also lead to a larger installation diameter of the optical accessories adapted to it, resulting in a larger size of the overall optical accessories, such as a soft box with a diameter of several meters, a soft cover, a reflector cup, a reflector, a soft ball, a projection tube, a Fresnel lens, an electric focus lens, a multi-page baffle, etc. Large-sized optical accessories will also have a poor optical effect on light, so it is inconvenient to use high-power LED movie lights.

[0055] See also Figure 1 and Figure 2 The stereoscopic light source type movie lamp 1 provided in this embodiment includes a stereoscopic light source 10 and a liquid cooling device 20. The stereoscopic light source 10 is arranged on the cooling device. In this example, the cooling device is a liquid cooling device 20. Compared with the traditional planar light source, the stereoscopic light source 10 can greatly reduce the projection area of ​​the LED chip on the light emitting surface. In addition, the liquid cooling device 20 can dissipate heat from the stereoscopic light source 10 in time to ensure that the movie lamp with a relatively high power can work normally.

[0056] The three-dimensional light source 10 includes a plurality of light panels 11, which are arranged at angles to each other to form light-emitting surfaces at multiple angles, and the light-emitting surfaces are distributed in a three-dimensional space. The three-dimensional light source 10 can reduce its area perpendicular to the irradiation direction, which is conducive to reducing the volume of a high-power three-dimensional light source type movie light 1.

[0057] The light board 11 includes a light source 111 and a circuit board 112. The light source 111 is disposed on the circuit board 112. The light source 111 may be an LED lamp bead, an LED chip, a laser light source, etc. When the light source 111 is an LED chip, the LED chip may be directly integrated on the circuit board using the chip on board packaging technology COB (chip on board). The light board 11 may also be a COB board. When the light source is lit, it generates heat, which is transferred to the circuit board 112.

[0058] The LED chips are evenly arranged on the circuit board 112, and the arrangement shape of the LED chips corresponds to the shape of the light-emitting surface of the lamp board 11. The arrangement shape of the LED chips can be rectangular, circular, etc. When the density of the LED chips is large, the heat generated by the LED chips is large.

[0059] The light board 11 is also provided with an electrical connection module 113, which can be provided at the outer edge of the circuit board. The circuit of the LED chip on the COB board is integrated in the electrical connection module 113, and the electrical connection module 113 leads outwardly to a cable 114, which can be used to power the light board 11 and transmit data signals.

[0060] The electrical connection modules 113 can be connected through cables 114, and can be electrically connected by plugging. The mutually spliced ​​light panels 11 can be electrically connected and data signal transmitted through the electrical connection module 113. It can be understood that the electrical connection relationship between the light panels 11 can be in series or in parallel. That is, the three-dimensional light source type film and television lamp 1 can realize the working state of a single light panel 11 individually, and can also realize the working state of multiple light panels 11 at the same time. The working state of the light panel 11 includes lighting, extinguishing, flashing, and controlling the corresponding LED chips of different colors to adjust the color temperature.

[0061] The liquid cooling device 20 is in a three-dimensional shape. The liquid cooling device 20 is provided with a plurality of heat-conducting surfaces 201, which are arranged at an angle, and at least two heat-conducting surfaces 201 are equipped with lamp boards 11. Then, the three-dimensional light source 10 can be formed by installing the heat-conducting surfaces 201 of the liquid cooling device 20. Moreover, the lamp board 11 is installed on the heat-conducting surface 201, which can facilitate the heat on the lamp board 11 to be transferred through the heat-conducting surface 201.

[0062] The side of the liquid cooling device 20 can be set as a heat conducting surface 201. Each heat conducting surface 201 corresponds to a light emitting surface. A plurality of light panels 11 can be assembled on the liquid cooling device 20 to form the three-dimensional light source 10. The liquid cooling device 20 can be a cube, a polyhedron, an irregular shape, etc., and the corresponding shape of the three-dimensional light source 10 can also be a cube, a polyhedron, an irregular shape, etc.

[0063] The lamp panels 11 are detachably mounted on the heat conducting surface 201. When one of the lamp panels 11 fails, only the lamp panel 11 needs to be disassembled and replaced, while the other lamp panels 11 can continue to work normally, thus facilitating maintenance and saving maintenance costs.

[0064] Specifically, the lamp board 11 can be detachably mounted on the heat conducting surface 201 of the liquid cooling device 20 by fastening screws 9 .

[0065] See also Figure 2 The liquid cooling device 20 includes a liquid cooling box 21. The liquid cooling box 21 is provided with at least one liquid cooling chamber for circulating cooling liquid. The liquid cooling box 21 is also provided with a liquid inlet and a liquid outlet connected to the liquid cooling chamber. The cooling liquid enters the liquid cooling chamber through the liquid inlet and is discharged from the liquid outlet. The flowing cooling liquid flows out of the liquid cooling chamber and can take away the heat on the heat conducting surface 201, thereby realizing heat dissipation of the lamp board 11.

[0066] The liquid cooling box 21 includes a plurality of sub-liquid cooling chambers, which are interconnected. Each sub-liquid cooling chamber may correspond to a heat conducting surface 201, and dissipate heat from the lamp board 11 disposed on the heat conducting surface 201. The plurality of sub-liquid cooling chambers may be interconnected in series or in parallel, as long as the circulation of the coolant in each sub-liquid cooling chamber can be achieved.

[0067] The liquid cooling box 21 may be an integrated structure. Each side surface of the liquid cooling box 21 is a heat conducting surface 201 , and the lamp board 11 is directly mounted on multiple side surfaces of the liquid cooling box 21 .

[0068] Specifically, the liquid cooling box 21 is in a cube shape. Then two adjacent heat-conducting surfaces 201 are arranged perpendicular to each other, and the angle between the two adjacent heat-conducting surfaces 201 is a right angle. When the liquid cooling box 21 is in other shapes, such as a frustum or a polyhedral sphere, the angle between the heat-conducting surfaces 201 can also be an acute angle or an obtuse angle.

[0069] The liquid cooling box 21 has six side surfaces. Five of the side surfaces can be used as heat-conducting surfaces 201, and the other side surface can be provided with a liquid inlet 212 and a liquid outlet 213, and is used to lead out the liquid inlet pipe 63, the liquid outlet pipe 64, the cable 114 and other lines. Alternatively, the side surface can also be used for assembly to fix the liquid cooling box 21 on an external bracket. Alternatively, the side surface can also be provided with a snap-fit ​​structure to enable the liquid cooling boxes 21 to be spliced ​​with each other. Alternatively, when the liquid inlet pipe 63, the liquid outlet pipe 64 and the cable 114 do not interfere with the operation of other lamp boards 11, the side surface can also be used as a heat-conducting surface 201 for installing the lamp board 11, thereby increasing the number of lamp boards 11 installed in the liquid cooling box 21.

[0070] The liquid cooling boxes 10 can also be connected to each other to form a pyramid, column, etc. Multiple liquid cooling boxes 10 can be stacked to form a light source that meets the design requirements of the photography light. In addition, when one of the liquid cooling boxes 10 is damaged, only the damaged liquid cooling box 10 needs to be replaced, and the other liquid cooling boxes 10 continue to work, making the liquid cooling device easy to repair and reducing the maintenance cost.

[0071] A liquid cooling cavity 211 may be formed inside the liquid cooling box 21, or the internal space of the liquid cooling box 21 may be divided into a plurality of sub-liquid cooling cavities by partitions, pipes, etc. The division of the internal liquid cooling cavity of the liquid cooling box 21 is not limited here, as long as each heat-conducting surface 201 of the liquid cooling box 21 is in contact with a corresponding liquid cooling cavity, and the heat on the heat-conducting surface 201 can be taken away by the coolant. The liquid cooling box 21 is introduced with low-temperature coolant through the liquid inlet to cool each heat-conducting surface 201 contacted by the liquid cooling cavity. The low-temperature coolant absorbs the heat generated by the light source on the lamp board 11 through the heat-conducting surface 201 and becomes high-temperature coolant, which is discharged from the liquid outlet.

[0072] Specifically in this embodiment, please refer to Figure 3 and Figure 4 For convenience of description, the heat conducting surface 201 of the liquid cooling box 21 includes a first heat conducting surface 203, a second heat conducting surface 204, a third heat conducting surface 205 and a fourth heat conducting surface 206 which are arranged around and connected end to end, and a fifth heat conducting surface 207 located at the top. The liquid inlet 212 and the liquid outlet 213 are opened at the bottom of the liquid cooling box 21.

[0073] The liquid cooling chamber 211 of the liquid cooling box 21 can be divided into a low-temperature cooling chamber and a high-temperature reflux chamber. The low-temperature cooling chamber is connected to the liquid inlet 212, and the high-temperature reflux chamber is connected to the liquid outlet 213. Among them, the low-temperature cooling chamber includes a first cooling chamber 214 distributed in a ring around the liquid cooling chamber 211, and a second cooling chamber 215 arranged at the top, and the first cooling chamber 214 and the second cooling chamber 215 are connected through a cooling channel 216. The first cooling chamber 214 is distributed around the first heat conducting surface 203, the second heat conducting surface 204, the third heat conducting surface 205 and the fourth heat conducting surface 206. The second cooling chamber 215 is located at the top of the liquid cooling box 21, corresponding to the fifth heat conducting surface 207. The cooling channel 216 is located at the center of the liquid cooling box 21, extending from bottom to top, to achieve the connection between the first cooling chamber 214 and the second cooling chamber 215. Fins 217 are provided in both the first cooling chamber 214 and the second cooling chamber 215.

[0074] When the low-temperature coolant enters from the liquid inlet 212 at the bottom, it is diverted to the first cooling chamber 214 and the second cooling chamber 215 through the cooling channel 216. The coolant in the first cooling chamber 214 will flow from bottom to top along the fins 217, and will take away the heat generated by the first heat-conducting surface 203, the second heat-conducting surface 204, the third heat-conducting surface 205 and the fourth heat-conducting surface 206, and will flow out from the top of the first cooling chamber 214 to become the first high-temperature reflux liquid. The coolant in the second cooling chamber 215 will flow upward to the fins, and the coolant will be diverted to both sides, and will take away the heat generated by the fifth heat-conducting surface 207, and will flow out from the surrounding side of the second cooling chamber 215 to become the second high-temperature reflux liquid.

[0075] The high-temperature reflux chamber 218 is located between the first cooling chamber 214 and the second cooling chamber 215, and the high-temperature reflux chamber 218 extends in the vertical direction. The high-temperature reflux chamber 218 is connected to the first cooling chamber 214 and the second cooling chamber 215. The liquid cooling box 21 is provided with a baffle 219 between the top of the first cooling chamber 214 and the peripheral side of the second cooling chamber 215. The baffle 219 can prevent the first high-temperature reflux liquid and the second high-temperature reflux liquid from turbulent flow, affecting the smooth reflux of the first high-temperature reflux liquid and the second high-temperature reflux liquid into the high-temperature reflux chamber 218, and finally the first high-temperature reflux liquid and the second high-temperature reflux liquid flow out through the liquid outlet 213. The above-mentioned low-temperature cooling chamber and the high-temperature reflux chamber 218 are arranged to facilitate the one-way flow of the coolant in the liquid cooling chamber, which is convenient for the circulation of the coolant.

[0076] It can be understood that the shape of the liquid cooling box 21 can also be a sphere, a polyhedron, an irregular shape, etc.

[0077] See also Figure 5 and Figure 6 In other embodiments, the liquid cooling box 21 may further include a plurality of sub-liquid cooling boxes 22. The sub-liquid cooling boxes 22 are provided with sub-liquid cooling chambers. The plurality of sub-liquid cooling boxes 22 are mutually inclined and spliced, and may be spliced ​​into a pyramid shape, a sphere shape, a polyhedron shape, etc.

[0078] The sub-liquid cooling box 22 may be flat. The sub-liquid cooling box 2222 includes a first mounting plate 221 and a second mounting plate 222 that are arranged opposite to each other. The outer side surface of the first mounting plate 221 is a heat-conducting surface 201. The lamp board 11 may be mounted on the outer side surface of the first mounting plate 221. The lamp board 11 is detachably mounted on the heat-conducting surface 201. When one of the lamp boards 11 fails, only the lamp board 11 needs to be disassembled and replaced, and the other lamp boards 11 can continue to work normally, thereby facilitating maintenance and saving maintenance costs. Specifically, the lamp board 11 may be detachably mounted on the heat-conducting surface 201 of the liquid cooling device 20 by fastening screws 9.

[0079] A temperature sensor 202 may also be provided on the first mounting plate 221 . The temperature sensor 202 is used to sense the temperature of the first mounting plate 221 .

[0080] The first mounting plate 221 and / or the second mounting plate 222 may be provided with a water tank along the thickness direction, and the first mounting plate 221 and the second mounting plate 222 cover the water tanks to form a sub-liquid cooling cavity. The sub-liquid cooling cavity is used to pass the cooling liquid. The second mounting plate 222 is provided with a first connecting pipe 223 and a second connecting pipe 224 connected to the sub-liquid cooling cavity. The first connecting pipe 223 can be used to connect the cooling liquid, and the second connecting pipe 224 can be used to lead out the cooling liquid. It can be understood that the first connecting pipe 223 can also be used to lead out the cooling liquid, and the second connecting pipe 224 can also be used to connect the cooling liquid.

[0081] The plurality of sub-liquid cooling boxes 22 include a plurality of sub-liquid cooling chambers, and the plurality of sub-liquid cooling chambers can be interconnected through the first connecting pipe 223 and the second connecting pipe 224. Furthermore, the plurality of sub-liquid cooling chambers can be connected in series or in parallel.

[0082] The liquid cooling device 20 further includes a junction box 23, a liquid inlet 212 and a liquid outlet 213 are arranged on the junction box 23, a junction cavity is arranged in the junction box 23, and the junction cavity is connected with the liquid cooling cavity. Specifically, the plurality of sub-liquid cooling cavities are connected with the junction cavity, and the plurality of sub-liquid cooling cavities are connected in parallel through the junction cavity.

[0083] Specifically, five sub-liquid cooling boxes 22 and one junction box 23 are spliced ​​together to form a hexahedral liquid cooling device 20. The five sub-liquid cooling boxes 22 correspond to the five side surfaces of the hexahedron, and the junction box 23 is located on the bottom surface of the hexahedron. The first mounting surfaces of the five sub-liquid cooling boxes 22 are used to mount the light board 11, and also form a three-dimensional light source 10. Then the two adjacent sub-liquid cooling boxes 22 are arranged perpendicular to each other, and the angle between the two adjacent heat conducting surfaces 201 is a right angle. When the liquid cooling box 21 is in other shapes, such as a frustum or a polyhedron, the angle between the two adjacent liquid cooling boxes 22 can also be an acute angle or an obtuse angle.

[0084] The junction box 23 is located at the bottom of the hexahedral liquid cooling device 20. The upper surface of the junction box 23 is provided with a first joint 231 for connecting the first connecting pipe 223 and a second joint 232 for connecting the second connecting pipe 224. There are multiple first joints 231 and second joints 232, which correspond to the first connecting pipes 223 and the second connecting pipes 224 of the five sub-liquid cooling boxes 22, respectively.

[0085] Furthermore, the first connecting tube 223 and the second connecting tube 224 of the sub-liquid cooling box 22 located on different sides extend toward the upper surface of the junction box 23. This ensures that the first connecting tube 223 and the second connecting tube 224 of each sub-liquid cooling box 22 can be connected to the first joint 231 and the second joint 232 of the junction box 23.

[0086] Furthermore, the first joints 231 and the second joints 232 are aligned with the docking positions of the first connecting pipe 223 and the second connecting pipe 224 of each sub-liquid cooling box 22, respectively, so that the five sub-liquid cooling boxes 22 can be docked to form a cube shape.

[0087] The first connecting pipe 223 and the second connecting pipe 224 are hard pipes. In addition, the sub-liquid cooling box 22 is supported and positioned on the junction box 23 by the first connecting pipe 223 and the second connecting pipe 224 .

[0088] Furthermore, the first connecting pipe 223 is detachably connected to the first joint 231. The second connecting pipe 224 is detachably connected to the second joint 232. When one of the sub-liquid cooling boxes 22 is damaged, it is only necessary to remove the sub-liquid cooling box 22 and replace it with a new sub-liquid cooling box 22, thereby achieving convenient maintenance.

[0089] See also Figure 7 and Figure 8 In other embodiments, the stereoscopic light source type movie light 1 further includes a base 40 and a mounting frame 50. The mounting frame 50 is disposed on the base 40. The base 40 may be the main body of the stereoscopic light source type movie light 1, and is used to provide support. The base 40 may be a hollow box. The mounting frame 50 may also be a cubic structure with one end open. The open end of the mounting frame 50 is mounted on the base 40 and communicated with the interior of the base 40. The mounting frame 50 and / or the base 40 may be a metal frame.

[0090] The base 40 is provided with a bayonet structure 41 for mounting the optical accessory. The mounting frame 50 is arranged at the center of the bayonet structure 41, and the optical accessory is sleeved on the outer side of the mounting frame 50. The mounting frame 50 is located on the optical axis of the optical accessory.

[0091] The mounting frame 50 is provided with a plurality of mounting surfaces 51 which are arranged obliquely to each other. The sub-liquid cooling boxes 22 are mounted on the respective mounting surfaces 51 of the mounting frame 50. The mounting frame 50 can better support the plurality of sub-liquid cooling boxes 22 so that the sub-liquid cooling boxes 22 can be stably spliced ​​together and maintain a three-dimensional shape. Therefore, the three-dimensional light source 10 is formed by relying on the mounting frame 50.

[0092] See also Fig. 9 and Fig.10 In addition, the stereoscopic light source 10 of the stereoscopic light source type movie light 1 also includes a lamp housing 13. The lamp housing 13 is sleeved on the outside of the stereoscopic light source 10 to protect the stereoscopic light source 10. The shape of the lamp housing 13 is adapted to the shape of the stereoscopic light source 10 and the mounting frame 50. The lamp housing 13 is also in a polyhedral shape. A light-transmitting hole is provided on the side of the lamp housing 13 corresponding to the lamp board 11, which is used to transmit the light emitted by the light source on the lamp board 11.

[0093] Specifically, the mounting frame 50 is in a cubic shape. The mounting frame 50 may have five mounting surfaces 51 and one open end. Five sub-liquid cooling boxes 22 are correspondingly mounted on the five mounting surfaces 51. A first connecting pipe 223, a second connecting pipe 224 and a circuit pipeline 225 are provided on the second mounting plate 222 of the sub-liquid cooling box 22. Among them, the circuit pipeline 225 is used to transmit the cable 114 of the light board 11. The mounting surface 51 is provided with a first through hole 511, a second through hole 512 and a third through hole 513, the first through hole 511 is used to pass through the first connecting pipe 223, the second through hole 512 is used to pass through the second connecting pipe 224, and the third through hole 513 is used to pass through the circuit pipeline 225. Then, the first connecting pipe 223, the second connecting pipe 224 and the circuit pipeline 225 of the plurality of sub-liquid cooling boxes 22 are gathered inside the mounting frame 50 and enter the inside of the base 40 from the open end.

[0094] It can be understood that the multiple first connecting tubes 223 can be merged into one pipeline, and the multiple second connecting tubes 224 can also be merged into one pipeline, so as to facilitate the connection with the liquid inlet pipe 63 and the liquid outlet pipe 64.

[0095] The above-mentioned stereoscopic light source type movie and television lamp 1 may also include an external liquid cooling box 60 and a power control device 70. The liquid cooling box 60 is independent of the liquid cooling device 20. Moreover, the liquid cooling box 60 and the liquid cooling device 20 are connected to each other. Then the liquid cooling box 60 provides low-temperature cooling liquid for the liquid cooling device 20. The cooling liquid may be low-temperature water, low-temperature fluorinated liquid, low-temperature silicone oil, etc. The liquid cooling box 60 is independently arranged from the liquid cooling device 20, does not occupy the space of the liquid cooling device 20, and does not increase the weight of the liquid cooling device 20, which can facilitate the layout of the stereoscopic light source 10. Moreover, the distance between the liquid cooling box 60 and the liquid cooling device 20 can be adjusted according to the use requirements, and can be applied to a variety of occasions.

[0096] A pressure pump and a cooler are provided in the liquid cooling box 60. The external liquid cooling box 60 is also provided with a liquid inlet pipe 63 and a liquid outlet pipe 64. The liquid inlet pipe 63 is connected to the liquid inlet 212, and the liquid outlet pipe 64 is connected to the liquid outlet 213, forming a closed liquid cooling circulation loop. The pressure pump is connected to the liquid cooling circulation loop to pressurize the coolant, so that the coolant maintains a high flow rate, so that the coolant can quickly take away heat.

[0097] The cooler is used to provide circulating coolant for the liquid cooling device 20. The cooler in the liquid cooling box 60 can be a heat exchanger 61 and an electric fan 62. The electric fan 62 is arranged on one side of the heat exchanger 61.

[0098] The heat exchanger 61 may be a plate heat exchanger, a tube heat exchanger, a shell and tube heat exchanger, etc. The heat exchanger 61 allows high-temperature coolant to flow on one side, while cold air flows on the other side, and the heat in the coolant is taken away by the flowing cold air through heat conduction and convection, thereby cooling the coolant.

[0099] The electric fan 62 can accelerate the flow of cold air on the surface of the heat exchanger, improve the heat dissipation efficiency of the heat exchanger, and help the coolant to dissipate heat to the surrounding environment more quickly.

[0100] The liquid cooling box 60 can be powered by an internal battery or an external mains supply, and the power supply method of the liquid cooling box 60 is not limited here. The liquid cooling box 60 is connected to a power source, so that the pressure pump and the fan can be powered on and work.

[0101] The power control device 70 is used for connecting an external power source. The power control device 70 is electrically connected to the light board 11 and the liquid cooling box 60 , and is used for supplying power to the light board 11 and the liquid cooling box 60 .

[0102] The power control device 70 can be directly electrically connected to the cable 114 of the light board 11. The light boards 11 can be connected in series or in parallel. Alternatively, the power control device 70 is provided with a wire 31, and the power control device 70 is electrically connected to the stereoscopic light source type movie light 1 through the wire 71. The power control device 70 is connected to the light board 11 by electrical signals. The power control device 70 can realize the control of various working states of the light board 11.

[0103] The heat-conducting surface 201 of the stereoscopic light source type movie light 1 is provided with a temperature sensor 202. The temperature sensor 202 is electrically connected to the power supply control device 70. When the temperature information collected by the temperature sensor 202 reaches a preset temperature, the preset temperature is a safe temperature that can ensure the safe operation of the light board 11. When the temperature of the heat-conducting surface 201 reaches the preset temperature, it means that the liquid cooling device 20 has begun to cool the heat-conducting surface 201. When the temperature drops to the safe temperature of the light board 11, the power supply control device 70 can be controlled to turn on the stereoscopic light source 10 to ensure that the stereoscopic light source type movie light 1 can work normally.

[0104] Specifically in this embodiment, the power control device 70 can also be electrically connected to the liquid cooling box 60 of the liquid cooling device to supply power to the liquid cooling box 60. The power control device 70 can also be electrically connected to the liquid cooling box 60. After the power control device 70 controls the liquid cooling box 60 to start working, it controls the light board 11 to be powered on. Thus, the operation of the liquid cooling box 60 is controlled. The power control device 70 is provided with a wire 72, and the power control device 70 is electrically connected to the liquid cooling box 60 through the wire 32.

[0105] Specifically in this embodiment, the power control device 70 can first control the liquid cooling box 60 to turn on, so that the pressure pump and the fan start working. After the liquid cooling box 60 is turned on, after a preset time interval, the power control device 70 controls the three-dimensional light source type movie light 1 to turn on, so as to ensure that the three-dimensional light source type movie light 1 works normally.

[0106] See also Figures 7 to 10, and also provides a film and television lamp system. The film and television lamp system includes the above-mentioned three-dimensional light source film and television lamp 1 and optical accessories 2.

[0107] The optical accessory 2 is arranged in front of the stereoscopic light source 10, and the optical accessory 2 can be a soft light umbrella, a soft light cover, a soft light box, a reflective cup, etc. The stereoscopic light source 10 of the stereoscopic light source type movie lamp 1 is located on the optical axis of the optical accessory 2. In addition, the light output area of ​​the stereoscopic light source 10 in the direction perpendicular to the optical axis is small, so the stereoscopic light source 10 can be approximated as a point light source to the greatest extent. For the optical accessory 2, it is convenient for the optical accessory 2 to achieve focusing and improve the conversion efficiency of the optical accessory 2 to light. In addition, the installation aperture size of the optical accessory 2 is also greatly reduced, reducing the diameter size of the optical accessory 2, which is convenient for the assembly and use of the optical accessory 2. The optical accessory 2 can be a small reflective cup sleeved on the outside of the stereoscopic light source 10 and assembled into one through the lamp housing. The optical accessory 2 can also be various detachable external optical accessories.

[0108] Please see Fig.11 , is a schematic diagram of the structure of another embodiment of a cooling device for a stereoscopic light source type movie lamp of the present application. The cooling device 30 is similar to the liquid cooling device 20 in terms of the overall appearance structure and the arrangement of the heat-conducting surface. Therefore, the cooling device 30 includes multiple heat-conducting surfaces similar to the liquid cooling device 20, and can be used to install multiple lamp boards with different light-emitting directions. For example, the lamp board installed on the first heat-conducting surface 303 emits light in the left direction in the figure, the lamp board installed on the third heat-conducting surface 305 emits light in the right direction in the figure, and the lamp board installed on the fifth heat-conducting surface 307 emits light in the upper direction in the figure, thereby forming a stereoscopic light source. The cooling device 30 may include a cooling rack 300 made of metal or other materials with good thermal conductivity, the outer surface of the cooling rack 300 forms the aforementioned multiple heat-conducting surfaces in different directions, and the inner surface of the cooling rack 300 is installed with a semiconductor refrigeration plate 320 corresponding to each heat-conducting surface, and the cold surface of the semiconductor refrigeration plate 320 faces or is close to the heat-conducting surface and the lamp board, and the hot surface of the semiconductor refrigeration plate 320 is away from the heat-conducting surface. The cooling effect generated by the cold surface of the semiconductor refrigeration plate 320 can quickly cool the lamp panel, while the hot surface can dissipate heat through a fan or liquid cooling. As an example, the cooling device 30 may further include a liquid cooling box 31 disposed inside the cooling rack 300, the liquid cooling box 31 is filled with liquid, and its outer surface is respectively connected to the hot surface of the semiconductor refrigeration plate 320, for rapid liquid cooling and heat dissipation of the hot surface of the semiconductor refrigeration plate 320. The liquid cooling box 31 is connected to the liquid inlet 312 and the liquid outlet 313, so that the coolant is introduced into the liquid cooling box 31 for circulation and then discharged from the liquid cooling box 31.

[0109] Although the solution of the present application is mainly described by taking an external or partially external cooling system as an example, it should be understood that a movie light utilizing the stereoscopic light source of the present application may also combine an external liquid cooling box with the stereoscopic light source and the liquid cooling device into one body through a housing.

[0110] The above contents are only preferred embodiments of the present invention and are not intended to limit the implementation scheme of the present invention. A person skilled in the art can easily make corresponding changes or modifications based on the main concept and spirit of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope required by the claims.

Claims

1. A stereoscopic light source video lamp, characterized in that: include: A plurality of light boards, each light board comprising a light source and a circuit board, wherein the light source is arranged on the circuit board; and A cooling device, wherein the cooling device comprises a plurality of heat-conducting surfaces, the plurality of heat-conducting surfaces are arranged at an angle, at least two of the heat-conducting surfaces are equipped with the lamp boards, and at least two of the lamp boards emit light in different directions.

2. The video light according to claim 1, characterized in that: The cooling device is a liquid cooling device, which includes a liquid cooling box. The liquid cooling box is provided with at least one liquid cooling cavity for circulating cooling liquid. The liquid cooling box is also provided with a liquid inlet and a liquid outlet connected to the liquid cooling cavity. The cooling liquid enters the liquid cooling cavity through the liquid inlet and is discharged from the liquid outlet.

3. The stereoscopic light source type movie and television lamp according to claim 2, characterized in that: The lamp panel is detachably arranged on the heat conducting surface.

4. The stereoscopic light source type movie and television lamp according to claim 2, characterized in that: The liquid cooling box is in a polyhedral shape, and the liquid inlet and the liquid outlet are located on the same side of the liquid cooling box.

5. The stereoscopic light source type movie and television lamp according to claim 4, characterized in that: The liquid cooling box includes a plurality of sub-liquid cooling boxes, each of which is provided with a sub-liquid cooling cavity, and the plurality of sub-liquid cooling boxes are mutually inclined and spliced, and the sub-liquid cooling box includes a first mounting plate and a second mounting plate which are arranged opposite to each other, the outer side surface of the first mounting plate is the heat conducting surface, and the second mounting plate is provided with a first connecting pipe and a second connecting pipe which are connected with the sub-liquid cooling cavity.

6. The stereoscopic light source type movie and television lamp according to claim 5, characterized in that: The liquid cooling device further comprises a junction box, the liquid inlet and the liquid outlet are arranged on the junction box, a junction cavity is arranged in the junction box, and the junction cavity is communicated with the liquid cooling cavity.

7. The stereoscopic light source type movie and television lamp according to claim 5, characterized in that: It also includes a mounting frame, which is provided with a plurality of mounting surfaces that are arranged obliquely to each other, and the second mounting plate of the sub-liquid cooling box is mounted on the mounting surfaces.

8. The stereoscopic light source type movie and television lamp according to claim 7, characterized in that: The second mounting plate of the sub-liquid cooling box is also provided with a circuit pipeline for passing the cable of the lamp board, and the mounting surface is provided with a first through hole, a second through hole and a third through hole, the first through hole is used to pass the first connecting tube, the second through hole is used to pass the second connecting tube, and the third through hole is used to pass the circuit pipeline.

9. The stereoscopic light source type movie and television lamp according to claim 7, characterized in that: It also includes a base, the mounting bracket is arranged on the base, and the base is provided with a bayonet structure for detachable connection of the optical accessory.

10. The stereoscopic light source type movie and television lamp according to claim 2, characterized in that: The liquid cooling box is an integrated structure.

11. The stereoscopic light source video lamp according to any one of claims 2 to 10, characterized in that: It also includes a liquid cooling box, which is equipped with a cooler and a pressure pump. The liquid cooling box is also equipped with a liquid inlet pipe and a liquid outlet pipe. The liquid inlet pipe is connected to the liquid inlet, and the liquid outlet pipe is connected to the liquid outlet. The cooler is used to provide circulating coolant for the liquid cooling device, and the pressure pump is connected to the circulation.

12. The stereoscopic light source type video lamp according to claim 11, characterized in that: It also includes a power supply control device, which is electrically connected to the light board and the liquid cooling box, and is used to supply power to the light board and the liquid cooling box.

13. The stereoscopic light source type video lamp according to claim 12, characterized in that: The power supply control device is respectively connected to the light board and the liquid cooling box with electrical signals. After the power supply control device controls the liquid cooling box to start working, it controls the light board to be powered on.

14. The stereoscopic light source type movie and television lamp according to claim 1, characterized in that: The cooling device comprises a plurality of semiconductor refrigeration plates, wherein the cold surfaces of the semiconductor refrigeration plates face the lamp board, and the hot surfaces of the semiconductor refrigeration plates face away from the lamp board.

15. A film and television lighting system, characterized in that: include: The stereoscopic light source type video lamp according to any one of claims 1 to 14; The optical accessory is arranged in front of the stereoscopic light source type video light, and the stereoscopic light source type video light is located on the optical axis of the optical accessory.

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