Film and television lamp
By centralizing the cooling fan in the film and television light to directly dissipate heat at the light source of the light panel, the problem of increased size and weight caused by the complex heat dissipation structure in the existing technology is solved, and efficient heat dissipation and light emission effects are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GODOX PHOTO EQUIPMENT CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-21
AI Technical Summary
The existing LED film and television lights have complex heat dissipation structures, resulting in a large size and significant weight increase in the lamp body, which affects luminous efficiency and color temperature effect.
A centralized cooling fan is used to directly dissipate heat at the light source of the lamp panel. By setting pressure blocks and vents on the light-emitting side of the lamp panel, the cooling fan drives airflow to directly dissipate heat from the light source. The combination of vents and air ducts improves the heat dissipation efficiency.
It effectively reduces the heat accumulation phenomenon of the light source in the lamp panel, ensures the luminous efficiency and color temperature effect of the lamp panel, and avoids excessive increase in the size and weight of the lamp body.
Smart Images
Figure CN224152811U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of photographic equipment technology, and in particular to a film and television light. Background Technology
[0002] Film and television lights are a type of lighting equipment used in stage performances and film and television shooting for illumination and to achieve certain lighting effects. They help to express the content of the program, reflect the author's creative intentions, create an artistic atmosphere, and provide the audience and camera with the correct color perception and exposure.
[0003] In existing technologies, LED film and television lights, whether using air cooling or liquid cooling, dissipate heat from the back of the light panel. As the power requirements of film and television lights increase, the heat dissipation structure on the back of the light panel becomes increasingly complex, resulting in a large light body and a significant increase in the overall weight of the light. Utility Model Content
[0004] The purpose of this utility model is to provide a film and television light that can concentrate the airflow of the cooling fan at the light source of the light panel, so as to more directly target the light source of the light panel, reduce the heat accumulation phenomenon of the light source on the light-emitting side of the light panel, and ensure the luminous efficiency and color temperature effect of the light panel.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] According to one aspect of the present invention, a film and television light is provided, comprising a housing, a lamp plate, a pressing block, and a cooling fan; the housing has a light outlet extending into the housing; the lamp plate is disposed within the housing; the light-emitting side of the lamp plate faces the light outlet; a light source is disposed on the light-emitting side of the lamp plate, the light source being directly opposite the light outlet; a first chamber and a second chamber are formed on both sides of the lamp plate within the housing; the first chamber is located on the side of the lamp plate facing the light outlet; the housing has a plurality of ventilation holes on the outer periphery of the light outlet. Multiple ventilation holes extend into the first chamber; a pressure block is disposed within the first chamber; the pressure block is disposed parallel to the lamp panel and close to the light-emitting side of the lamp panel; a through-hole is provided on the pressure block corresponding to the light source, the through-hole communicating with the light outlet; a mounting groove is provided on the side of the pressure block facing the light outlet; a cooling fan is disposed in the mounting groove of the pressure block; the side of the mounting groove facing the through-hole communicates with the through-hole; an air passage is also provided on the pressure block; the air passage passes through the outer periphery of the pressure block and the through-hole.
[0007] In some embodiments of this application, the cooling fan is capable of inlet or outlet air along its own radial direction, and the axial direction of the cooling fan is perpendicular to the light-emitting side of the lamp panel; the air passage is open to one side facing the lamp panel.
[0008] In some embodiments of this application, the cooling fan is a centrifugal fan; the central axis of the centrifugal fan is perpendicular to the light-emitting side of the lamp panel.
[0009] In some embodiments of this application, multiple air ducts are provided, and the multiple air ducts are provided on the side of the light-transmitting hole facing away from the mounting groove.
[0010] In some embodiments of this application, the outer shell includes a main shell and a front shell; the front side of the main shell is open, the front shell covers the front side of the main shell, the light outlet is opened on the front shell and penetrates the wall thickness of the front shell in the front-rear direction; the vent is opened on the main shell or the front shell.
[0011] In some embodiments of this application, the vent holes are provided on the front shell; there are multiple vent holes, some of which are located near the mounting groove and some of which are located near the opening of the air passage.
[0012] In some embodiments of this application, at least a portion of the vent holes form an angle greater than 0° and less than or equal to 90° with the normal to the lamp plate in the light emission direction.
[0013] In some embodiments of this application, a filter screen is provided inside the housing, and the filter screen covers the vent holes or is embedded in the vent holes.
[0014] In some embodiments of this application, a filter screen is provided inside the housing, and the filter screen is disposed at the opening of the mounting groove or the air passage.
[0015] In some embodiments of this application, a cooling fan is also provided inside the housing, and a receiving groove is also provided on the side of the pressure block facing the light outlet; the cooling fan is disposed in the receiving groove.
[0016] In some embodiments of this application, the cooling fan is a centrifugal fan; the receiving groove is disposed on the edge of the pressure block, and the receiving groove is open in the direction toward the periphery of the pressure block.
[0017] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects:
[0018] In this invention, a pressure block is disposed within the first chamber, and a mounting groove is formed on the side of the pressure block facing the light outlet. A cooling fan is disposed within the mounting groove of the pressure block, and the operation of the cooling fan drives the airflow within the first chamber. Multiple vent holes are formed on the outer periphery of the outer casing; these vent holes extend into the first chamber, allowing the cooling fan to drive airflow within the first chamber, enabling the air to enter and exit the first chamber through the vent holes and / or the light outlet, facilitating gas exchange between the first chamber and the external environment for heat dissipation. The mounting groove and the light-transmitting hole are interconnected, and an air duct runs through the outer periphery of the pressure block and the light-transmitting hole, concentrating the cooling fan's airflow at the light source of the lamp panel, providing more direct heat dissipation to the light source, reducing heat accumulation on the light-emitting side of the lamp panel, and ensuring the luminous efficiency and color temperature effect of the lamp panel.
[0019] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.
[0020] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.
[0022] Figure 1 This is a structural schematic diagram of the film and television lamp of this utility model.
[0023] Figure 2 A partial structural diagram of the film and television lamp of this utility model.
[0024] Figure 3 This is an exploded view of the film and television lamp of this utility model.
[0025] Figure 4 This is a cross-sectional schematic diagram of the film and television lamp of this utility model.
[0026] Figure 5 This is a schematic diagram of the front shell of this utility model.
[0027] Figure 6 This is a schematic diagram of the structure of the pressure block of this utility model.
[0028] Figure 7 This is a schematic diagram of another embodiment of the film and television lamp of this utility model.
[0029] Figure 8This is a cross-sectional view of the film and television lamp of this utility model at the vent.
[0030] The reference numerals in the attached drawings are explained as follows: 100, outer casing; 101, first chamber; 102, second chamber; 110, light outlet; 120, vent hole; 130, heat dissipation hole; 140, lens; 150, push-fit structure; 160, bayonet structure; 170, main casing; 180, front casing; 181, inclined surface; 200, lamp board; 210, conductive terminal; 300, cooling fan; 400, pressure block; 410, light-transmitting hole; 420, mounting slot; 430, air duct; 500, heat dissipation component; 510, heat spreader; 520, heat pipe; 530, fins; 600, cooling fan. Detailed Implementation
[0031] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art.
[0032] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.
[0033] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present application, and should not be construed as limiting the present application.
[0034] Figure 1 This is a structural schematic diagram of the film and television lamp of this utility model. Figure 2 A partial structural diagram of the film and television lamp of this utility model. Figure 3 This is an exploded view of the film and television lamp of this utility model.
[0035] For ease of description and understanding, Figure 1 The placement of film and television lights is defined by the vertical direction. The front-back direction is defined by the light emission direction of the lights. The light emission direction of the lights is considered the front, and the direction away from the front is considered the back. The directions perpendicular to the vertical and front-back directions are the left-right directions.
[0036] See also Figures 1 to 3 This application provides a film and television light, which is a device used for color temperature illumination in film and television shooting, and can be used to control the light effect and create the atmosphere of the scene during shooting. The film and television light of this application includes a housing 100 and a light panel 200 disposed inside the housing 100. The housing 100 has a hollow structure, and an installation space is formed inside the housing 100. A light outlet 110 is opened on the outer periphery of the housing 100, extending into the housing 100, and the light panel 200 is disposed in the installation space of the housing 100. The light emitted by the light panel 200 passes through the light outlet 110 on the housing 100 and is projected outside the film and television light. The light outlet 110 is opened on the front side of the housing 100 and penetrates the front side wall of the housing 100, and the light emitted by the light panel 200 is projected forward through the light outlet 110.
[0037] Multiple vent holes 120 are provided on the outer periphery of the outer casing 100. The multiple vent holes 120 extend into the outer casing 100 so that the gas inside the outer casing 100 can circulate with the external environment through the vent holes 120 for heat dissipation in the film and television lamp.
[0038] In one embodiment, a plurality of vent holes 120 are respectively opened on two opposite side walls of the housing 100, such as on the left side wall and the right side wall; or, on the upper side plate and the lower side wall.
[0039] In another embodiment, a plurality of vent holes 120 are formed on the same side wall of the housing 100, and the plurality of vent holes 120 are spaced apart on the same side wall of the housing 100.
[0040] In some embodiments, the vent 120 is formed on the outer periphery of the light outlet 110 of the housing.
[0041] Ventilation holes 120 are provided at any position on any side wall of the outer casing, without any restrictions.
[0042] In some embodiments, the housing 100 includes a main housing 170 and a front housing 180. The front side of the main housing 170 is open, and the front housing 180 covers the front side of the main housing 170. A light outlet 110 is formed on the front housing 180 and extends through the wall thickness of the front housing 180 in the front-rear direction.
[0043] In one embodiment, a plurality of vent holes 120 are formed on the front housing 180. The plurality of vent holes 120 are formed on the upper and lower parts of the front housing 180. Alternatively, the plurality of vent holes 120 are formed on the left and right sides of the front housing 180.
[0044] In another embodiment, a plurality of vent holes 120 are formed at the front end of the main housing 170, and a plurality of vent holes 120 are formed on the upper sidewall and the lower sidewall of the main housing 170.
[0045] In some embodiments, the housing 100 is further provided with heat dissipation holes 130, which are located behind the vent holes 120 and are used for gas flow between the housing 100 and the external environment.
[0046] In one embodiment, the heat dissipation holes 130 are formed on the upper and lower sidewalls of the housing 100. In another embodiment, the heat dissipation holes 130 are formed on the left and right sidewalls of the housing 100.
[0047] Figure 4 This is a cross-sectional schematic diagram of the film and television lamp of this utility model. Figure 5 This is a schematic diagram of the front shell of this utility model.
[0048] See Figures 1 to 4 The light source is provided on the light-emitting side of the light panel 200, and the light source emits light for shooting. The light panel 200 is disposed inside the housing 100, and the light-emitting side of the light panel 200 faces the light outlet 110 on the housing 100. The light emitted by the light source passes through the light outlet 110 and is projected onto the outside of the film and television light.
[0049] In one embodiment, the light source is a COB (Chip on Board) light source. A COB light source integrates multiple LED chips directly onto a lamp board 200. These LED chips are directly fixed to the lamp board 200, connected by gold wires or conductive adhesive, and their surfaces are covered with phosphor and silicone to form an integrated light source. When the LED chips are powered on, they emit light; the phosphor converts some of the blue light into other colors (such as white light), and the silicone encapsulates and protects the chips while optimizing luminous efficiency. The lamp board 200 is a metal substrate (such as an aluminum substrate, copper substrate, etc.) or a ceramic substrate.
[0050] In one embodiment, the light source is an SMD (surface mount device) light source, with each LED individually packaged and mounted on the light board 200.
[0051] In another embodiment, the light source is a DIP (dual in-line package) light source.
[0052] In this application, the lamp panel 200 is disposed within the housing 100, and the space within the housing 100 forms a first chamber 101 and a second chamber 102 on both sides of the lamp panel 200; the first chamber 101 is located on the side of the lamp panel 200 facing the light outlet 110. The first chamber 101 is disposed on the front side of the lamp panel 200, and the second chamber 102 is disposed on the rear side of the lamp panel 200.
[0053] In some embodiments, a plurality of vent holes 120 are provided on the outer periphery of the outer casing 100, and the plurality of vent holes 120 respectively extend into the first chamber 101. The vent holes 120 allow gas to flow between the first chamber 101 and the external environment, so that the heat in the first chamber 101 can be dissipated to the outside of the video lamp through the vent holes 120. The vent holes 120 are provided on the front casing 180.
[0054] Multiple heat dissipation holes 130 on the outer casing 100 can be connected to the second chamber 102 respectively. The heat dissipation holes 130 allow gas flow between the second chamber 102 and the external environment, so that the heat in the second chamber 102 can be dissipated to the outside of the film and television lamp through the heat dissipation holes 130.
[0055] In some embodiments, a lens 140 is provided at the light outlet 110 of the housing 100, and the lens 140 faces the light source of the lamp panel 200.
[0056] Figure 6 This is a schematic diagram of the structure of the pressure block of this utility model.
[0057] See Figures 1 to 6 The film and television light is equipped with a cooling fan 300, which is located inside the first chamber 101. Multiple ventilation holes 120 are formed on the outer periphery of the outer casing 100, each extending into the first chamber 101. The cooling fan 300 drives airflow within the first chamber 101, allowing gas to enter and exit through the ventilation holes 120 and / or the light outlet 110, thus carrying heat from the first chamber 101 to the outside of the outer casing 100. A cooling fan 300 is also installed on the light-emitting side of the lamp panel 200 to directly and quickly remove heat generated on the light-emitting side through air circulation, reducing heat accumulation at the light source and ensuring the luminous efficiency and color temperature of the lamp panel 200.
[0058] In some embodiments, a pressure block 400 is provided on the light-emitting side of the lamp panel 200, and the pressure block 400 is disposed within the first chamber 101 of the lamp panel 200. The pressure block 400 is disposed parallel to the lamp panel 200 and close to the light-emitting side of the lamp panel 200. The pressure block 400 is disposed on the light-emitting side of the lamp panel 200 to shield the light-emitting side of the lamp panel 200 and protect the electronic components on the light-emitting side of the lamp panel 200.
[0059] In other embodiments, the pressure block 400 covers the light-emitting side of the lamp panel 200, and the pressure block 400 has a through light-transmitting hole 410 corresponding to the light source. The light-transmitting hole 410 is set to correspond to the light-emitting port 110, and the light-transmitting hole 410 and the light-emitting port 110 are connected, so that the light from the light source can pass through the light-emitting port 110 and the light-transmitting hole 410.
[0060] In this application, there is a gap between the side of the pressure block 400 facing the light outlet 110 and the corresponding inner wall of the outer casing 100, so that the gas in the first chamber 101 can flow within the gap. The gas in the first chamber 101 can flow under the drive of the cooling fan 300 and dissipate heat to the outside of the film and television lamp through the vent 120.
[0061] In some embodiments, a mounting groove 420 is formed on the side of the pressure block 400 facing the light outlet 110, and a cooling fan 300 is disposed in the mounting groove 420 of the pressure block 400. The mounting groove 420 and the light-transmitting hole 410 on the pressure block 400 are interconnected, so that the airflow of the cooling fan 300 can be directly transmitted to the light-transmitting hole through the mounting groove 420. An air passage 430 is also formed on the pressure block 400; the air passage 430 passes through the outer periphery of the pressure block 400 and the light-transmitting hole 410, so that the gas at the light-transmitting hole 410 can flow directly to the outside of the pressure block 400 through the air passage 430.
[0062] The mounting slot 420 passes through the light-transmitting hole 410; the air duct 430 passes through the outer periphery of the pressure block 400 and the light-transmitting hole 410, so as to concentrate the air force of the cooling fan 300 at the light source of the lamp board 200, and dissipate heat from the light source of the lamp board 200 more directly, thereby reducing the heat accumulation phenomenon of the light source on the light-emitting side of the lamp board 200, so as to ensure the luminous efficiency and color temperature effect of the lamp board 200.
[0063] In some implementations, the cooling fan 300 can draw in or expel air radially, and the axial direction of the cooling fan 300 is perpendicular to the light-emitting side of the lamp panel 200. The cooling fan can have a smaller thickness in its axial direction relative to its radial direction. When the cooling fan 300 is disposed in the first chamber, it has a smaller thickness in the front-to-back direction.
[0064] In one embodiment, the cooling fan 300 is a centrifugal fan, which draws in air along its axial direction and exhausts air along its radial direction. The centrifugal fan has a smaller thickness along its axial direction relative to its radial direction. The central axis of the centrifugal fan is perpendicular to the light-emitting side of the lamp panel 200. Because the centrifugal fan has a smaller thickness along its axial direction, when placed inside the first chamber 101, it does not cause excessive changes in the thickness direction of the first chamber 101, thus effectively preventing an increase in the volume of the video lamp in the front-to-back direction.
[0065] In this application, the pressure block 400 has a mounting groove 420 on the side facing the light outlet 110, and the centrifugal fan is installed in the mounting groove 420. The installation of the centrifugal fan in the mounting groove 420 can effectively ensure that the thickness of the first chamber 101 in the front-back direction will not increase excessively or will not increase.
[0066] In some embodiments, the centrifugal fan is disposed in the mounting groove 420, and the side of the centrifugal fan facing the light outlet 110 does not extend beyond the side of the pressure block 400 facing the light outlet 110, so as to ensure that the arrangement of the centrifugal fan will not cause an increase in the thickness of the first chamber 101 in the front-back direction.
[0067] There is a gap between the side of the centrifugal fan facing the light outlet 110 and the side wall of the housing 100 where the light outlet 110 is located, so as to drive the air flow in the first chamber 101, so that the gas in the first chamber 101 can flow out of the first chamber 101 through the vent 120.
[0068] In some embodiments, the air duct 430 is open on the side facing the lamp panel 200. When the gas flows in the air duct 430, it flows through the light-emitting side of the lamp panel 200 and can also carry away the heat from other electronic components on the light-emitting side of the lamp panel 200, so as to better dissipate heat from the light-emitting side of the lamp panel 200.
[0069] In other embodiments, multiple air ducts 430 are provided, and the multiple air ducts 430 are located on the side of the light-transmitting hole 410 facing away from the mounting groove 420. The mounting groove 420 and the air ducts 430 are located on opposite sides of the light-transmitting hole 410. Air is drawn in and discharged at opposite ends of the pressure block 400, thereby effectively ensuring airflow within the first chamber 101 for better heat dissipation.
[0070] In some embodiments, vent holes 120 are provided on the front housing 180; multiple vent holes 120 are provided, with some vent holes 120 located near the mounting groove 420 and some vent holes 120 located near the opening of the air passage 430. The mounting groove 420 passes through the light-transmitting hole 410, and the air passage 430 passes through the outer periphery of the pressure block 400 and the light-transmitting hole 410. The light source of the lamp panel 200 is located within the enclosure of the light-transmitting hole 410, thereby allowing the gas at the light source to be discharged from the housing 100 more quickly, resulting in higher heat dissipation efficiency at the light source.
[0071] It should be noted that the film and television lights are also equipped with a filter (not shown in the picture), which is used for filtration to prevent dust.
[0072] In some embodiments, a filter screen is disposed within the housing 100, and the filter screen covers the vent 120. The vent 120 is formed on the front housing 180, and the filter screen is disposed on the inner side of the front housing 180.
[0073] In other embodiments, the filter screen is embedded in the vent 120.
[0074] In one embodiment, a filter screen is provided inside the housing 100, and the filter screen is located at the opening of the mounting groove 420 or the air passage 430.
[0075] See again Figures 1 to 6 The film and television light also includes a heat dissipation component 500, which is disposed within the second chamber 102. The heat dissipation component 500 is located on the side of the lamp panel 200 facing away from the light outlet 110, and the outer casing 100 also has heat dissipation holes 130. The heat dissipation component 500 is attached to the side of the lamp panel 200 facing away from the light outlet 110, and heat from the lamp panel 200 is transferred to the heat dissipation component 500 for heat dissipation. The heat from the heat dissipation component 500 is dissipated to the outside of the outer casing 100 through the heat dissipation holes 130. The heat dissipation component 500 is either an air-cooled or water-cooled heat dissipation structure.
[0076] In one embodiment, the heat dissipation assembly 500 includes a vapor chamber 510, a heat pipe 520, and fins 530. The vapor chamber 510 is attached to the side of the lamp panel 200 facing away from the light outlet 110, and the heat pipe 520 is connected to the vapor chamber 510. Fins 530 are disposed on the heat pipes 520, and multiple fins 530 are provided. Heat from the lamp panel 200 is transferred to the fins 530 through the vapor chamber 510 and the heat pipes 520. The fins 530 dissipate the heat to the gas in the second chamber 102, and the gas in the second chamber 102 is dissipated to the outside of the outer casing 100 through the heat dissipation holes 130.
[0077] In another embodiment, the heat dissipation assembly 500 includes a heat spreader 510, a heat pipe 520, fins 530 and a fan (not shown in the figure). After the heat on the fins 530 is transferred to the gas in the second chamber 102, the fan drives the gas in the second chamber 102 to move to the outside of the outer casing 100 through the heat dissipation hole 130.
[0078] It should be noted that, in some embodiments, the first chamber 101 and the second chamber 102 of the lamp panel 200 are respectively provided with heat dissipation structures. The cooling fan 300 is disposed in the first chamber 101, and the heat dissipation assembly 500 is disposed in the second chamber 102, thereby enabling heat dissipation from both sides of the lamp panel 200.
[0079] In another embodiment, the lamp panel 200 is provided with a cooling fan 300 only in the first chamber 101.
[0080] See again Figures 1 to 5 A bayonet structure 160 is provided on the outer side of the housing 100 at the light outlet 110. A protective cover (not shown) is provided on the housing 100, and the protective cover is detachably connected to the bayonet structure 160. When the protective cover is installed at the light outlet 110, it can protect the light outlet 110.
[0081] After the protective cover is removed from the bayonet structure 160, accessories such as reflectors and electric Fresnel lenses can be installed at the bayonet structure 160.
[0082] In some embodiments, a conductive terminal 210 is provided on the light-emitting side of the lamp panel 200, with the front end of the conductive terminal 210 exposed at the light outlet 110. After accessories such as reflectors and electric Fresnel sensors are connected to the bayonet structure 160, the conductive terminal 210 abuts against and is electrically connected to the accessories.
[0083] In other embodiments, a slidable push-lock structure 150 is provided on the outer side of the housing 100 near the light outlet 110. The push-lock structure 150 is used to limit accessories such as protective covers, reflectors, and electric Fresnel lenses. The push-lock structure 150 locks the protective cover or unlocks it from the protective cover by sliding.
[0084] Figure 7 This is a schematic diagram of another embodiment of the film and television lamp of this utility model.
[0085] See Figure 7 and combined Figures 1 to 6 In this embodiment, a cooling fan 600 is also provided inside the first chamber 101. A receiving groove is formed on the side of the pressure block 400 facing the light outlet 110, and the cooling fan 600 is disposed within the receiving groove. The cooling fan 600 can drive the gas flow within the first chamber 101, thereby causing the gas within the first chamber 101 to flow out through the vent 120 to the outside of the outer casing 100. The placement of the cooling fan 600 within the receiving groove effectively ensures that the thickness of the first chamber 101 in the front-back direction does not increase excessively or at all.
[0086] The cooling fan 600 is a centrifugal fan, with a smaller thickness along its axial direction relative to its radial direction. A receiving groove is located at the edge of the pressure block 400, opening towards the periphery of the pressure block 400. The cooling fan 600 is disposed within the receiving groove, and the centrifugal fan draws air in along its axial direction to move the gas within the first chamber 101 toward the centrifugal fan. The centrifugal fan discharges air radially to exhaust the gas through the vent 120 on the outer casing 100.
[0087] Figure 8 This is a cross-sectional view of the film and television lamp of this utility model at the vent.
[0088] See Figure 8 and combined Figures 1 to 7 At least some of the vent holes 120 have an angle between the axis 121 and the normal 201 of the lamp board in the light-emitting direction that is greater than 0° and less than or equal to 90°, so as to facilitate the flow of gas in the first chamber to the outside of the outer shell, and to facilitate gas convection between the first chamber and the external environment, so as to facilitate heat dissipation.
[0089] In some embodiments, the edge of the front sidewall of the housing 100 is inclined forward in the direction from the edge to the center to form an inclined wall 181, and the axis 121 of the vent 120 is perpendicular to the inclined wall 181, so that the vent 120 has a minimum length, thereby facilitating the passage of gas through the vent 120 and improving the efficiency of heat dissipation.
[0090] For example, both the light outlet 110 and the vent 120 are formed on the front housing 180. The edge of the front sidewall of the front housing 150 is inclined forward in the direction from the edge to the center to form an inclined wall 181. The axis 121 of the vent 120 is perpendicular to the inclined wall 181.
[0091] In some embodiments, the vent 120 is formed on the upper part of the front housing 180, and the axis 121 of the vent 120 is inclined upward and forward.
[0092] In other embodiments, the vent 120 is located on the left or right side of the front housing 180, and the axis 121 of the vent 120 is tilted to the left or right in the forward direction.
[0093] In one specific embodiment, the angle between the axis 121 of the vent hole 120 and the normal 201 of the lamp panel in the light emission direction is 60°.
[0094] In some embodiments, the angle between the axis 121 of the vent hole 120 and the normal 201 of the lamp panel in the light emission direction is any angle between 60° and 90°.
[0095] In other embodiments, the angle between the axis 121 of the vent 120 and the normal 201 of the lamp panel in the light emission direction is any angle between 0° and 60°.
[0096] Based on the above structure, the pressure block 400 is disposed within the first chamber 101, and a mounting groove 420 is formed on the side of the pressure block 400 facing the light outlet 110. A cooling fan 300 is disposed within the mounting groove 420 of the pressure block 400, and the operation of the cooling fan 300 drives the airflow within the first chamber 101. Multiple vent holes 120 are formed on the outer periphery of the outer casing 100; these vent holes 120 extend into the first chamber 101, and the cooling fan 300 drives the airflow within the first chamber 101, allowing the gas within the first chamber 101 to enter and exit the first chamber 101 through the vent holes 120 and / or the light outlet 110, thereby facilitating gas exchange between the first chamber 101 and the external environment for heat dissipation. The pressure block 400 has an installation groove 420 and an air passage 430. The installation groove 420 passes through the light passage hole 410. The air passage 430 passes through the outer periphery of the pressure block 400 and the light passage hole 410, so that the air force of the cooling fan 300 can be concentrated at the light source of the lamp board 200, so as to dissipate heat from the light source of the lamp board 200 more directly, improve the heat dissipation efficiency of the light source, and reduce the heat accumulation phenomenon of the light source on the light-emitting side of the lamp board 200, so as to ensure the luminous efficiency and color temperature effect of the lamp board 200.
[0097] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0098] In this application, unless otherwise expressly specified and limited, the terms "assembly," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In the description of this specification, the reference to terms such as "some embodiments," "exemplarily," etc., means that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples.
[0099] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application. Therefore, any changes or modifications made in accordance with the claims and description of this application should fall within the scope of this patent application.
Claims
1. A film and television light characterized by, include: The outer casing has a light-emitting port that extends through the casing. A lamp panel is disposed within the housing; the light-emitting side of the lamp panel faces the light outlet; a light source is disposed on the light-emitting side of the lamp panel, and the light source is directly facing the light outlet; a first chamber and a second chamber are formed on both sides of the lamp panel within the housing; the first chamber is located on the side of the lamp panel facing the light outlet; the housing has a plurality of vent holes on the outer periphery of the light outlet; the plurality of vent holes respectively penetrate into the first chamber; A pressure block is disposed in the first chamber; the pressure block is disposed parallel to the lamp panel and close to the light-emitting side of the lamp panel; a through light-transmitting hole is provided on the pressure block corresponding to the light source, and the light-transmitting hole communicates with the light-emitting port; a mounting groove is provided on the side of the pressure block facing the light-emitting port; A cooling fan is disposed within the mounting slot of the pressure block; The mounting groove is connected to the light-transmitting hole on the side facing the light-transmitting hole; an air passage is also provided on the pressure block; the air passage passes through the outer periphery of the pressure block and the light-transmitting hole.
2. The movie light of claim 1, wherein, The cooling fan can draw in or expel air radially, and the axial direction of the cooling fan is perpendicular to the light-emitting side of the lamp panel; the air duct is open to one side of the lamp panel.
3. The movie light of claim 2, wherein, The cooling fan is a centrifugal fan; the central axis of the centrifugal fan is perpendicular to the light-emitting side of the lamp panel.
4. The movie light of claim 1, wherein, Multiple air ducts are provided, and the multiple air ducts are located on the side of the light-transmitting hole that faces away from the mounting groove.
5. The film and television lamp according to any one of claims 1 to 4, characterized in that, The outer casing includes a main casing and a front casing; the front side of the main casing is open, the front casing covers the front side of the main casing, the light outlet is opened on the front casing and penetrates the wall thickness of the front casing in the front-back direction; the vent is opened on the main casing or the front casing.
6. The movie light as defined in claim 5 wherein, The ventilation holes are provided on the front shell, and there are multiple ventilation holes. Some of the ventilation holes are located near the mounting groove, and some of the ventilation holes are located near the opening of the air passage. And / or at least part of the vent hole has an angle greater than 0° and less than or equal to 90° with the normal of the lamp plate in the light emission direction.
7. The movie light of claim 1, wherein, The housing is provided with a filter screen, which covers the vent holes or is embedded in the vent holes.
8. The movie light of claim 1, wherein, A filter screen is provided inside the housing, and the filter screen is located at the opening of the mounting slot or the air passage.
9. The movie light of claim 1, wherein, A cooling fan is also provided inside the housing, and a receiving groove is provided on the side of the pressure block facing the light outlet; the cooling fan is disposed in the receiving groove.
10. The movie light of claim 9, wherein, The cooling fan is a centrifugal fan; the receiving groove is located on the edge of the pressure block, and the receiving groove is open in the direction toward the periphery of the pressure block.