Film and television lamp

Abstract

The utility model provides a film and television lamp. A film and television lamp comprises a plurality of light sources, a base and a reflection cup. The light source emits light. The base is provided with a conical light-emitting cavity, one end of the light-emitting cavity is a large-opening end, the other end of the light-emitting cavity is a small-opening end, the light source is arranged on the inner side wall of the light-emitting cavity, and the large-opening end is a light outlet of light rays of the light source. The reflection cup is contained in the light-emitting cavity and arranged close to the small opening end, the reflection cup and the light-emitting cavity are arranged on the same optical axis, a light reflection face is arranged on the outer surface of the reflection cup, the light reflection face and the light source are oppositely arranged, and the light reflection face is used for reflecting light rays and enabling the light rays to be emitted in the direction of the light outlet. According to the film and television lamp, light of the light source can be well dodging, the light utilization rate of the film and television lamp is high, and the film and television lamp can achieve a good optical effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to a light emitting device technical field, especially a kind of film and television lamp. BACKGROUND

[0002] For film and television lamp, to meet the use demand of stage, concert, studio and so on, the working power of film and television lamp is higher, its luminous power can reach thousands of watts, even tens of thousands of watts. Therefore, for the traditional larger power film and television lamp, the area of its light emitting surface is larger. When the film and television lamp is used in cooperation with optical accessory, the light in the middle of the light emitting surface of larger area cannot reach the optical action surface of optical accessory, and is directly emitted, and optical accessory cannot achieve the expected optical effect on the above light, so that the optical accessory cannot form better light mixing effect on film and television lamp, which affects the optical effect of film and television lamp. SUMMARY

[0003] The utility model aims at solving the technical problem of the poor light mixing effect of the larger power film and television lamp in the prior art, and provides a film and television lamp capable of uniformly mixing light.

[0004] A film and television lamp, comprising:

[0005] a plurality of light sources for emitting light;

[0006] a base provided with a light emitting cavity, the light emitting cavity is conical, one end of the light emitting cavity is a large opening end, and the other end is a small opening end, the light sources are arranged on the inner side wall of the light emitting cavity, and the large opening end is the light outlet of the light of the light sources; and

[0007] a reflecting cup accommodated in the light emitting cavity and arranged close to the small opening end, the reflecting cup and the light emitting cavity are arranged on the same optical axis, the outer surface of the reflecting cup is provided with a reflecting surface, the reflecting surface is arranged opposite to the light sources, and the reflecting surface is used for reflecting the light and making the light emit towards the direction of the light outlet.

[0008] In one embodiment, the reflecting surface is a plurality of reflecting surfaces, and the plurality of reflecting surfaces are symmetrically arranged on the outer surface of the reflecting cup.

[0009] In one embodiment, the light emitting cavity is provided with a plurality of light emitting surfaces, and the plurality of light emitting surfaces are symmetrically distributed on the inner side surface of the base, and each light emitting surface corresponds to a reflecting surface opposite thereto.

[0010] In one embodiment, the reflecting surface is a smooth continuous curved surface.

[0011] Alternatively, the reflecting surface is a splicing surface of a plurality of micro reflecting surfaces.

[0012] In one of the embodiments, the distance between the reflective surface and the optical axis gradually decreases in the light emitting direction of the light emitting cavity.

[0013] In one of the embodiments, the reflective surface is a convex surface protruding towards the light source.

[0014] In one of the embodiments, the reflective surface is a concave surface recessing towards the light source.

[0015] In one of the embodiments, the reflective cup is detachably arranged at the small end of the base.

[0016] In one of the embodiments, the video light further comprises a circuit board, the light source is integrally arranged on the circuit board, and the circuit board is detachably connected to the inner side wall of the light emitting cavity.

[0017] In one of the embodiments, the video light further comprises a liquid cooling module, the liquid cooling module comprises a heat conduction surface connected to the circuit board, the inside of the liquid cooling module is arranged in a liquid cooling cavity, and the liquid cooling cavity is in communication with the heat conduction surface.

[0018] In one of the embodiments, the side surface of the liquid cooling module facing the inner side wall of the base is a mounting surface, the mounting surface is provided with a docking head, a docking hole is correspondingly arranged on the inner side wall of the base, the docking head is inserted into the docking hole, the docking head comprises a liquid inlet head, a liquid outlet head and an electric head, the liquid inlet head and the liquid outlet head are in communication with the liquid cooling cavity, the electric head is electrically connected with the cable of the light source, the liquid inlet head is in communication with the liquid inlet, and the liquid outlet head is in communication with the liquid outlet.

[0019] According to the above technical solution, the video light has the following advantages:

[0020] In the above video light, the lamp panel of the video light is arranged on the inner side wall of the base to form a three-dimensional light source, which can facilitate the arrangement of more light sources in a three-dimensional space and improve the working power of the video light. Moreover, the reflective surface is arranged opposite to the light source, the reflective surface is used for reflecting light and making the light emit towards the light outlet direction. The reflective surface of the reflective cup can reflect the light emitted by the light source and emit from the light outlet, so that the angle of the light emitted by the light source can be better projected on the reflective cup, the reflective surface of the reflective cup can better receive all the light of the light source, thereby the all light can be utilized to improve the utilization rate of the light of the video light and has a better optical effect.

[0021] On the other hand, the optical effect of the video light can also achieve the optical effect of the traditional optical accessory, and the video light can also reduce the use of optical accessories, facilitating debugging and assembly.

[0022] And the reflecting cup can avoid the mutual reflection of the lamp plates on the opposite sides, causing the heat to increase dramatically and damage the light source.

[0023] And the above-mentioned film and television lamp can cool the lamp plate through liquid cooling, so as to ensure good heat dissipation effect of the lamp plate and avoid the influence of high heat on the normal work of the lamp plate when the power of the film and television lamp is high. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a schematic diagram of the three-dimensional structure of the film and television lamp of the embodiment.

[0025] Figure 2 is Figure 1 is another angle of the film and television lamp shown in the schematic diagram of the three-dimensional structure.

[0026] Figure 3 is Figure 1 is an exploded view of the film and television lamp shown.

[0027] Figure 4 is Figure 2 is an exploded view of the film and television lamp shown.

[0028] Figure 5 is Figure 1 is a light path diagram of the reflecting cup of the film and television lamp shown.

[0029] Figure 6 is Figure 5 is a light path diagram of another embodiment of the reflecting cup shown.

[0030] Figure 7 is Figure 5 is a light path diagram of another embodiment of the reflecting cup shown.

[0031] Figure 8 is Figure 5 is a sectional view of another embodiment of the reflecting cup shown.

[0032] Figure 9 is Figure 8 is a sectional view of another embodiment of the reflecting cup shown.

[0033] Figure 10 is Figure 5 is a sectional view of another embodiment of the reflecting cup shown.

[0034] Figure 11 is Figure 10 is a sectional view of another embodiment of the reflecting cup shown.

[0035] Figure 12 is Figure 5 is a sectional view of another embodiment of the reflecting cup shown.

[0036] Figure 13 is Figure 5 is a sectional view of another embodiment of the reflector cup.

[0037] Figure 14 is Figure 13 is a sectional view of another embodiment of the reflector cup.

[0038] The reference signs are explained as follows:

[0039] 10, film and television lamp; 11, light source; 14, circuit board; 15, lamp plate;

[0040] 12, base; 121, light emitting cavity; 122, large opening end; 123, small opening end; 124, light emitting surface; 125, liquid inlet; 126, liquid outlet; 127, line interface;

[0041] 13, reflector cup; 131, reflecting surface; 132, micro reflecting surface;

[0042] 16, liquid cooling module; 160, heat conduction surface; 161, first liquid cooling plate; 162, second liquid cooling plate; 163, mounting surface; 164, liquid inlet connector; 165, liquid outlet connector; 166, electrical connector;

[0043] 17, mounting part; 171, total liquid inlet; 172, total liquid outlet; 17163, total line interface;

[0044] 9, fastening screw. DETAILED DESCRIPTION

[0045] The typical embodiments embodying the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can have various changes in different embodiments, which do not deviate from the scope of the present application, and the description and drawings in the essence are used for description, not for limiting the present application.

[0046] In the description of the present application, it should be understood that in the embodiments shown in the drawings, the indication of direction or position relationship (such as up, down, left, right, front and back, etc.) is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation. When these elements are in the position shown in the drawings, these descriptions are appropriate. If the position of these elements changes, the indication of these directions also changes accordingly.

[0047] In addition, the terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an ordered ranking of the indicated technical features. Thus, features defined with "first", "second" etc. can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0048] The film and television lamp can be used in stage, concert, studio and other occasions, which can be used for stage lighting and also for photography lighting. For the traditional high-power film and television lamp, its luminous power can reach thousands of watts, even tens of thousands of watts. For the LED light source film and television lamp, when its luminous power reaches thousands of watts or tens of thousands of watts, the number of LED chips will be more. If all the LED chips are arranged on the same plane, the layout area of the LED chips will increase a lot. For the larger area of LED light source, the installation aperture of the optical accessories matched with it will be larger, resulting in the larger size of the overall optical accessories, such as the soft light box, soft light cover, reflector cup, soft light cover, projection cylinder, Fresnel lens, electric focusing mirror, multi-page baffle, etc. The large size of the optical accessories will also have poor optical effect on the light, thus causing inconvenience to the use of the film and television lamp.

[0049] In addition, for the traditional film and television lamp, as the area of the light-emitting surface increases, the overall volume of the film and television lamp will also increase a lot. At the same time, in order to meet the photography needs of different environments, the film and television lamp often needs to have zoom function. In the traditional film and television lamp, for the zoom adjustment, an external optical lens translation bracket is often needed to realize. For the film and television lamp with large volume, the volume of the optical lens focusing translation bracket is larger, thus the focusing translation bracket causes great inconvenience to the assembly, use and transportation of the film and television lamp.

[0050] In addition, for the film and television lamp with large light-emitting surface, its maintenance also has many difficulties, such as inconvenience to disassemble, inconvenience to transport, complex disassembly, resource waste and other problems. At the same time, for the light source with large power and large light-emitting surface area, its heat dissipation problem also becomes a problem.

[0051] Please refer to Figure 1 and Figure 2 The film and television lamp 10 of the embodiment includes a light source 11, a base 12 and a reflector cup 13.

[0052] The light source 11 can be an LED lamp bead, a bulb, or an LED chip. The light source 11 is configured to emit light. The LED chip can include multiple colors and multiple color temperatures. The single light source 11 includes at least two light-emitting chips of white light, cold white light, warm white light, red light, green light, blue light, yellow light, and cyan light. For example, the light source 11 can be a four-color light source including RGBW four-color LED chips, or a five-color light source such as RGBWW, RGBYW, and the like. The number of light-emitting chips included in the single light source 11 can be tens to thousands, thereby forming a high-power light-emitting light source. The video light 10 formed by multiple light sources 11 can have a power of hundreds to thousands of watts, or even more than ten thousand watts.

[0053] The light source 11 can be arranged on one side of the circuit board 14. The multiple light sources 11 and the circuit board 14 form a lamp panel 15. It can be understood that when the light source 11 is a bulb or an LED lamp bead, the circuit board can be omitted, and the bulb can be electrically connected by a wire.

[0054] In this embodiment, the light source 11 is an LED chip, which can be directly packaged on the circuit board 14 by COB packaging technology. The light source 11 can include an LED light bar or a COB (Chip On Board) lamp panel, and the COB lamp panel can use ceramic, metal, PCB, or composite materials as a substrate.

[0055] In addition, the lamp panels 15 are connected in parallel with each other. By controlling the lighting state and the light-emitting intensity of the LED chip, the color and the color temperature of different lamp panels 15 and different light sources 11 can be adjusted, thereby meeting the various use requirements of the video light 10.

[0056] The LED chip on the lamp panel 15 is provided with a connecting cable, which is configured to provide power and control signals for the LED chip.

[0057] In this embodiment, the multiple lamp panels 15 are connected to each other on the inner side wall of the base 12, thereby forming a three-dimensional light source on the inner side of the light-emitting cavity. The three-dimensional light source emits light in a three-dimensional manner, and the light-emitting surface is not concentrated on a two-dimensional plane. Therefore, when the video light 10 has the same power, the area of the cross section of the three-dimensional light source is much smaller than that of the traditional two-dimensional light-emitting surface, thereby reducing the volume of the video light 10 and facilitating transportation and use.

[0058] The base 12 can have a three-dimensional structure. The base 12 can have a bowl shape, a horn shape, or a cone shape. The base 12 is provided with a light-emitting cavity 121.

[0059] Circuit board 14 is detachably connected to the inner wall of base 12. Lamp board 15 is detachably disposed on the inner wall of light-emitting cavity 121. When one of the lamp boards 15 fails, it can be simply removed and replaced. The area of ​​each lamp board 15 is small, making it easy to transport and disassemble. Furthermore, the detachable lamp board 15 reduces the difficulty of maintenance, facilitates user self-repair, and improves the convenience of using film and television lights.

[0060] The light-emitting cavity 121 is conical. One end of the light-emitting cavity 121 is a large opening 122, and the other end is a small opening 123. The light source 11 is disposed on the inner wall of the light-emitting cavity 121, and the large opening 122 is the light outlet of the light source 11. The shape of the base 12 is not limited to the above shape, as long as the shape of the formed light-emitting cavity 121 is conical. The large opening 122 is the light outlet of the light source 11 to facilitate light dispersion.

[0061] See Figure 3 , Figure 4 The inner wall of the light-emitting cavity 121 can be divided into multiple light-emitting surfaces 124. The light-emitting surfaces 124 are inclined relative to the optical axis of the light-emitting cavity 121. The multiple light-emitting surfaces 124 are arranged symmetrically. The extending direction of each light-emitting surface 124 forms an angle with the optical axis. Specifically, the angle between each light-emitting surface 124 and the optical axis of the light-emitting cavity 121 is 80° to 150°. The light-emitting cavity 121 includes four light-emitting surfaces 124, which together form a frustum-shaped surface.

[0062] The angle between the light emitted by the lamp panel 15 and the optical axis is 80° to 150°. Furthermore, the light-emitting surface 124 may also be provided with a reflective layer, which is used to reflect the light emitted by the light source 11.

[0063] The lamp panels 15 are arranged directly along the inner wall of the light-emitting cavity 121, and multiple lamp panels 15 are symmetrically distributed about the central axis of the light-emitting cavity 121. The light emitted from the multiple lamp panels 15 forms an angle, that is, the multiple lamp panels 15 emit light to form a three-dimensional light source 11. By controlling the illumination of different lamp panels 15, corresponding optical effects can be achieved, such as divergent light, parallel light, etc. Therefore, the multiple lamp panels 15 in this light-emitting cavity 121 can also achieve the optical effects achieved by the interaction of a traditional point light source 11 and optical accessories.

[0064] In this embodiment, the light emission state of each light panel 15 is determined according to the desired light emission effect and the type of each light panel 15. The light emission state includes whether it is on or off, and the color or brightness of the emitted light. Therefore, a control signal for each light panel 15 can be generated based on its light emission state and the corresponding driving method. This control signal includes a light emission state control signal.

[0065] Exemplarily, if the light emitting effect to be presented is a blue light effect, the light emitting type of the lamp panel 15 is an LED chip capable of emitting multiple colors including blue, all the blue LED chips are controlled to be turned on, and the LED chips of other colors are controlled to be turned off. For another example, if the light emitting effect to be presented is a starry sky flickering light effect, the light emitting type of the lamp panel 15 is a single-color LED chip, and the control signal corresponding to each lamp panel 15 can be generated according to the light emitting state (part of the lamp beads emit stronger light, and another part emits weaker light) of each lamp panel 15 and the driving mode corresponding to each lamp panel 15, so as to control the three-dimensional light source 111 to present the starry sky flickering light effect.

[0066] Specifically in the embodiment, the control signal of the light emitting brightness of each lamp panel 15 can be generated according to the corresponding relationship between the brightness and the irradiation range of the lamp panel 15 located at different positions. Then, each control signal is sent to the corresponding lamp panel 15, and the lamp panel 15 performs light emitting control to realize the light control zooming effect. For example, by adjusting the brightness enhancement of the lamp panel 15 close to the center of the optical axis and the brightness weakening of the light emitting unit at the edge, the light of the three-dimensional light source 11 can be more concentrated, thereby realizing the “focusing” effect. For this purpose, the brightness of different lamp panels 15 in different zooming states is calculated by an algorithm, and then real-time adjustment is performed, so as to realize the smooth light control zooming effect and realize the zooming effect of the irradiation range of the three-dimensional light source 11 from large to small.

[0067] Therefore, the lamp panel 15 of the above-mentioned film and television lamp 10 is arranged on the inner side wall of the base 12 to form the three-dimensional light source 11. On one hand, the three-dimensional light source 11 can facilitate the arrangement of more lamp panels 15 and improve the working efficiency of the film and television lamp 10. On the other hand, the optical effect of the film and television lamp 10 can also achieve the optical effect of the traditional optical accessory, and the film and television lamp 10 can reduce the use of optical accessories, thereby facilitating debugging and assembly.

[0068] The inner side wall of the light emitting cavity 121 of the base 12 is located at one side of the accommodation cavity, and the accommodation cavity is used to accommodate a cable used for electrical connection with the lamp panel 15. The cable can be guided from the back of the light emitting cavity 121, thereby facilitating the line design of the film and television lamp 10. It can be understood that the cable can be a multi-way wire or a line between integrated electrical modules. In addition, the line interface 127 is used for electrical connection with the cable. The cable can be connected to the power supply, control signal, etc. through the line interface 127, so as to realize the lighting and control of the LED chip on the lamp panel 15.

[0069] The film and television lamp 10 further comprises a liquid cooling module 16. The liquid cooling module 16 is flat. The liquid cooling module 16 comprises a first liquid cooling plate 161 and a second liquid cooling plate 162 arranged oppositely. The first liquid cooling plate 161 and / or the second liquid cooling plate 162 can be provided with a water containing groove along the thickness direction thereof, and the first liquid cooling plate 161 and the second liquid cooling plate 162 mutually cover the water containing groove to form a liquid cooling cavity. The liquid cooling cavity is used for passing through cooling liquid.

[0070] The liquid cooling module 16 comprises a heat conduction surface 160 and a mounting surface 163 arranged oppositely. The heat conduction surface 160 is used for connecting with the circuit board 14, and the liquid cooling cavity is in communication with the heat conduction surface 160. The heat conduction surface 160 can take away the heat generated by the light source 11 on the circuit board 14. The mounting surface 163 is used for assembling the inner side surface of the base 12.

[0071] Specifically, the outer side surface of the first liquid cooling plate 161 is the heat conduction surface 160. The circuit board 14 can be mounted on the outer side surface of the first liquid cooling plate 161. The shape of the circuit board 14 is matched with the shape of the liquid cooling module 16. Each circuit board 14 can correspond to one liquid cooling module 16, or two circuit boards 14 correspond to one liquid cooling module 16, which is arranged according to the area of the lamp panel 15 and the area of the heat conduction surface 160 of the liquid cooling module 16.

[0072] In addition, the circuit board 14 can be detachably arranged on the heat conduction surface 160. When one of the circuit boards 14 fails, only the circuit board 14 needs to be disassembled and replaced, and the other circuit boards 14 can continue to work normally, which realizes convenient maintenance and saves maintenance cost. Specifically, the circuit board 14 can be detachably arranged on the heat conduction surface 160 of the liquid cooling module 16 through the fastening screw 9.

[0073] The side surface of the second liquid cooling plate 162 facing the inner side wall of the base 12 is the mounting surface 163, that is, the outer side surface of the second liquid cooling plate 162 is the mounting surface 163. The mounting surface 163 is provided with a butt joint. The butt joint comprises a liquid inlet joint 164 and a liquid outlet joint 165 in communication with the liquid cooling cavity. The cooling liquid enters the liquid cooling cavity through the liquid inlet joint 164 and is discharged from the liquid outlet joint 165. The flowing cooling liquid flows out of the liquid cooling cavity, which can take away the heat on the heat conduction surface 160, thereby realizing heat dissipation of the lamp panel 15.

[0074] The butt joint further comprises an electric joint 166. The electric joint 166 is used for electrically connecting with the cable of the lamp panel 15.

[0075] The inner side wall of the base 12 is correspondingly provided with a butt joint hole, and the butt joint can be inserted into the butt joint hole. The liquid inlet joint 164 is in communication with the liquid inlet 125, the liquid outlet joint 165 is in communication with the liquid outlet 126, and the electric joint 166 can be electrically connected with the power supply control box of the film and television lamp 10.

[0076] The small end 123 of the base 12 is also provided with a mounting portion 17. The volume of the mounting portion 17 is smaller than that of the base 12. The mounting portion 17 is used to fix the base 12 to an external support. In addition, the mounting portion 17 is provided with a total liquid inlet 171, a total liquid outlet 172 and a total wiring port 173.

[0077] The total liquid inlet 171 can be in communication with the liquid inlet connector 164 through a pipeline or a passage, the total liquid outlet 172 can be in communication with the liquid outlet connector 165 through a pipeline or a passage, and the total wiring port 173 can be electrically connected with the electric connector 166 through a wire or an integrated circuit. Then, the total liquid inlet 171 can be used to access the low-temperature cooling liquid, so as to be input into the liquid cooling cavity through the liquid inlet connector 164. After flowing through the heat-conducting surface 160, the warmed cooling liquid is output from the liquid outlet connector 165 to the total liquid outlet 172, and the circulation of the cooling liquid is realized through the external liquid cooling device, so as to cool the lamp panel 10.

[0078] In addition, the liquid cooling module 16 can be detachably mounted on the inner side wall of the light-emitting cavity 121. When one of the liquid cooling modules 16 fails, only the liquid cooling module 16 needs to be replaced, and the other liquid cooling modules 16 can continue to work normally, so as to realize convenient maintenance and save maintenance cost. Specifically, the liquid cooling module 16 can be detachably provided on the inner side wall of the base 12 through a fastening screw 9.

[0079] The liquid cooling cavities of the liquid cooling modules 16 can be connected in parallel with each other. When the different lamp panels 15 are controlled to be on or off, the corresponding liquid cooling modules 16 can also be matched with the on or off state of the lamp panels 15. That is, when the lamp panel 15 is on, the corresponding liquid cooling module 16 corresponding to the on lamp panel 15 is started to cool, or when the lamp panel 15 is off, the corresponding liquid cooling module 16 can also be in a non-working state. Therefore, the plurality of liquid cooling modules 16 can be independently controlled, and different working states are distinguished, so as to reduce the energy consumption of the liquid cooling modules 16.

[0080] The above-mentioned film and television lamp 10 cools the lamp panel 15 through liquid cooling, so as to ensure good heat dissipation effect of the lamp panel 15, and avoid that when the power of the film and television lamp 10 is high, high heat is generated to affect the normal work of the lamp panel 15.

[0081] The base 12 is provided with a liquid inlet 125, a liquid outlet 126 and a wiring interface 127. The liquid inlet 125 and the liquid outlet 126 are in communication with the receiving cavity. Therefore, the receiving cavity can also be used to circulate the cooling liquid.

[0082] In one embodiment, the receiving cavity is a liquid cooling cavity used to contain the cooling liquid. The liquid cooling cavity cools the inner side wall of the light-emitting cavity 121. When the cooling liquid flows in the receiving cavity, the heat on the inner side wall of the light-emitting cavity 121 of the base 12 can be timely taken away, so as to cool the lamp panel 15.

[0083] Specifically in this embodiment, the receiving cavity of the base 12 can also not contain cooling liquid. The receiving cavity can be used to contain a plurality of cooling liquid pipelines.

[0084] The reflecting cup 13 is received in the light emitting cavity 121 and is arranged close to the small opening end 123. The small opening end 123 of the base 12 can be a plane, and the reflecting cup 13 can be mounted on the plane. Specifically in this embodiment, the reflecting cup 13 is detachably arranged at the small opening end 123 of the base 12. Different optical effects can be formed for different shapes of the reflecting cup 13, and therefore, according to the use requirements of different optical effects of the film and television lamp 10, the reflecting cups 13 of various optical effects can be replaced and used.

[0085] The reflecting cup 13 can be a hollow structure, so that the reflecting cup 13 is lighter in weight, avoids increasing the overall weight of the film and television lamp 10, and enhances the convenience of the film and television lamp 10.

[0086] The reflecting cup 13 is arranged on the same optical axis A as the light emitting cavity 121, and the outer surface of the reflecting cup 13 is provided with a reflecting surface 131. Please refer to Figure 5 The reflecting surface 131 is arranged opposite to the light source 11, and the reflecting surface 131 is used for reflecting light and making the light emit toward the light emitting opening direction. The reflecting surface 131 of the reflecting cup 13 can reflect the light emitted by the light source 11 and emit from the light emitting opening, and therefore, the reflecting surface 131 of the reflecting cup 13 can better receive the light of the light source 11, so as to be able to utilize all the light, improve the utilization rate of the light of the film and television lamp, and have a better optical effect. Moreover, the reflecting cup 13 can avoid the light plates 15 on the opposite sides from mutually reflecting each other, causing a sharp increase in heat and damaging the light source 11.

[0087] The reflecting surface 131 is a plurality of. The plurality of reflecting surfaces 131 are symmetrically arranged on the outer surface of the reflecting cup 13. Moreover, a plurality of light emitting surfaces 124 are symmetrically distributed on the inner side of the base 12, and each light emitting surface 124 corresponds to a reflecting surface 131 opposite thereto. The light of the light source 11 on the light emitting surface can be directly projected onto the reflecting surface 131, and the reflecting surface 131 reflects the light.

[0088] Specifically in this embodiment, the number of the reflecting surface 131 is the same as that of the light emitting surface 124, and also includes four. The edges of the reflecting surface 131 and the edges of the light emitting surface are aligned with each other, so that the light emitting surface 124 and the reflecting surface 131 are kept continuous.

[0089] In the light emitting direction of the light emitting cavity 121, the distance of the reflecting surface 131 from the optical axis A gradually decreases. That is, the shape of the reflecting cup 13 gradually decreases in size in the light emitting direction. Therefore, the reflecting surface of the reflecting cup 13 is toward the light emitting direction, so that most of the reflected light can be emitted from the light emitting opening.

[0090] Please refer to Figure 6 , the reflecting surface 131 is a concave surface which is concave towards the light source 11. The concave shape of the reflecting surface 131 can make the exit angle of the reflected light smaller, and closer to the optical axis A, so as to avoid the light being too dispersed.

[0091] Please refer to Figure 7 , or the reflecting surface 131 is a convex surface which is convex towards the light source 11. The convex shape of the reflecting surface 131 can make the exit angle of the reflected light larger, and farther away from the optical axis A, so as to disperse the light and have a larger illumination range.

[0092] It can be understood that in other embodiments, the shape of the reflecting cup 13 can be conical or frustum-shaped, i.e., corresponding to different optical effects. That is, when the reflecting cup 13 is conical, the front end of the reflecting cup 13 is a pointed end; when the reflecting cup 13 is frustum-shaped, the front end of the reflecting cup 13 is provided with a flat surface.

[0093] Taking the center symmetry plane of the reflecting cup 13 as a section plane, the section view of the reflecting cup 13 is obtained. In this section view, the shape of the reflecting surface 131 of the reflecting cup 13 can be a straight line, a parabola, a hyperbola, etc. According to different optical effect requirements, the specific shape of the reflecting surface 131 can be designed correspondingly.

[0094] Please refer to Figure 8 and Figure 9 , in the section view of the reflecting cup 13, the shape of the reflecting surface 131 of the reflecting cup 13 can be a straight line. Among them Figure 8 , the plane reflecting surfaces 131 on both sides of the reflecting cup 13 converge at a point. Figure 9 , the plane reflecting surfaces 131 on both sides of the reflecting cup 13 converge on the end plane of the front end.

[0095] Please refer to Figure 10 , Figure 11 , in the section view of the reflecting cup 13, the shape of the reflecting surface 131 of the reflecting cup 13 can also be an arc. Among them Figure 10 , as shown in the figure, the arc-shaped reflecting surfaces 131 on both sides of the reflecting cup 13 converge at a point. Figure 11 , the arc-shaped reflecting surfaces 131 on both sides of the reflecting cup 13 converge on the end plane of the front end.

[0096] In other embodiments, in the section view of the reflecting cup 13, the shape of the reflecting surface 131 of the reflecting cup 13 can also be an arc. And in the light emitting direction, the distance of the reflecting surface 131 from its optical axis A gradually increases. That is, the shape of the reflecting cup 13 can shield the light at the center of the light source, so as to achieve different optical effects.

[0097] Please refer to Figure 13 ,Figure 13 The side view of the light emitting surface 131. The above-mentioned light reflecting surface 131 can be a smooth continuous curved surface; or, the light reflecting surface 131 can also be a joint surface formed by a plurality of micro light reflecting surfaces 132 jointing with each other. The shape of the micro light reflecting surface 132 can be square, circular, trapezoidal, pentagonal, hexagonal, etc.

[0098] Please refer to Figure 14 , Figure 14 The side view of another embodiment of the light emitting surface 131. The light reflecting surface 131 can also be a joint surface formed by a plurality of continuous curved surfaces jointing with each other, for example, the light reflecting surface 131 is sequentially arranged with a plurality of continuous curved surfaces along the light emitting direction, then the light reflecting surface 131 is a wave-shaped curved surface. The wave-shaped curved surface can also make the light uniformly reflect on the light reflecting surface 131, and enhance the uniform light effect of the film and television lamp 10.

[0099] Although the present application has been described with reference to several exemplary embodiments, it is understood that the words that have been used are words of description and illustration, rather than words of limitation. Since the present application can be embodied in various forms without departing from the spirit or essential characteristics thereof, it is understood that the embodiments are not limited to any particular combinations of the components set forth, but are only by way of example, and that the scope of the application is to be determined by proper interpretation of the appended claims and their equivalents.

Claims

1. A film and television light characterized by, The utility model relates to a light emitting device, comprising: a plurality of light sources for emitting light rays; a base provided with a light emitting cavity, the light emitting cavity is conical, one end of the light emitting cavity is a large opening end, the other end is a small opening end, the light sources are arranged on the inner side wall of the light emitting cavity, and the large opening end is the light emitting port of the light rays of the light sources; a reflecting cup is arranged in the light emitting cavity and close to the small opening end, the reflecting cup and the light emitting cavity are arranged on the same optical axis, the outer surface of the reflecting cup is provided with a reflecting surface, the reflecting surface is arranged opposite to the light sources, the reflecting surface is used for reflecting the light rays and making the light rays emit towards the light emitting port. The reflecting surface is a plurality of reflecting surfaces, and the plurality of reflecting surfaces are symmetrically arranged on the outer surface of the reflecting cup.

2. The movie light of claim 1, wherein, The light emitting cavity is provided with a plurality of light emitting surfaces, and the plurality of light emitting surfaces are symmetrically distributed on the inner side surface of the base, and each light emitting surface corresponds to a reflecting surface.

3. The movie light of claim 1, wherein, The reflecting surface is a smooth continuous curved surface.

4. The movie light of claim 1, wherein, Alternatively, the reflecting surface is a splicing surface of a plurality of micro reflecting surfaces. In the light emitting direction of the light emitting cavity, the distance between the reflecting surface and the optical axis gradually decreases.

5. The movie light of claim 1, wherein, The reflecting surface is a convex surface protruding towards the light sources.

6. The movie light of claim 4, wherein, The reflecting surface is a concave surface recessed towards the light sources.

7. The movie light of claim 4, wherein, The reflecting cup is detachably arranged at the small opening end of the base.

8. The movie light of claim 1, wherein, The video light further comprises a circuit board, the light sources are integrally arranged on the circuit board, and the circuit board is detachably connected to the inner side wall of the light emitting cavity.

9. The movie light of claim 1, wherein, The video light further comprises a liquid cooling module, the liquid cooling module comprises a heat conducting surface connected to the circuit board, and the inside of the liquid cooling module is arranged in a liquid cooling cavity, and the liquid cooling cavity is in communication with the heat conducting surface.

10. The movie light according to claim 9, wherein, The side surface of the liquid cooling module towards the inner side wall of the base is a mounting surface, the mounting surface is provided with a butt joint, the inner side wall of the base is correspondingly provided with a butt hole, the butt joint can be inserted into the butt hole, the butt joint comprises a liquid inlet joint, a liquid outlet joint and an electric joint, the liquid inlet joint and the liquid outlet joint are in communication with the liquid cooling cavity, the electric joint is electrically connected with the cable of the light sources, the liquid inlet joint is in communication with the liquid inlet of the base, and the liquid outlet joint is in communication with the liquid outlet of the base.

11. The movie light of claim 10, wherein, ​

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