Film and television lamp
By installing a cooling fan and ventilation holes on the light-emitting side of the film and television light panel, the problem of increased volume caused by the complex heat dissipation structure in the existing technology is solved, achieving a highly efficient heat dissipation effect and ensuring luminous efficiency and color temperature effect.
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
- 2026-04-28
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 cooling fan is installed on the light-emitting side of the lamp panel, and ventilation holes are opened on the outer casing. The heat from the light-emitting side of the lamp panel is directly removed by air circulation, forming a first chamber and a second chamber for heat dissipation.
By quickly removing heat from the light-emitting side of the lamp panel through air circulation, the heat accumulation phenomenon of the light source is reduced, ensuring the luminous efficiency and color temperature effect of the lamp panel.
Smart Images
Figure CN224176860U_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, which has a cooling fan installed on the light-emitting side of the light panel, so as to directly remove the heat generated on the light-emitting side of the light panel quickly through air circulation, 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 this utility model, a film and television light is provided, including a housing, a lamp panel, and a cooling fan; the housing has a light outlet extending through the housing; the lamp panel is disposed inside 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 cooling fan is disposed in the first chamber; the housing has a plurality of vent holes on the outer periphery of the light outlet; the plurality of vent holes respectively extend through the first chamber.
[0007] 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.
[0008] In some embodiments of this application, a pressure block is provided on the light-emitting side of the lamp panel, the pressure block is arranged parallel to the lamp panel and abuts against the light-emitting side of the lamp panel; a receiving groove is provided on the side of the pressure block facing the light outlet; the centrifugal fan is disposed in the receiving groove.
[0009] In some embodiments of this application, the pressure block covers the light-emitting side of the lamp panel, and a light-passing hole is provided on the pressure block corresponding to the light source for penetration; there is a gap between the side of the pressure block facing the light outlet and the corresponding inner wall of the housing.
[0010] In some embodiments of this application, the plurality of vent holes include air inlets and air outlets disposed on different sidewalls of the housing; the receiving groove is disposed on the edge of the pressure block and close to the air outlet; the receiving groove is open on the side facing the air outlet.
[0011] In some embodiments of this application, the pressure block has a plurality of protruding guide ribs on the side facing the light outlet; the plurality of guide ribs are spaced apart, and a guide groove for gas flow is formed between the guide ribs so as to guide the gas in the first chamber toward the centrifugal fan.
[0012] In some embodiments of this application, the guide grooves are configured as multiple sets, and the multiple sets of guide grooves are distributed around the central axis of the centrifugal fan.
[0013] In some embodiments of this application, the cooling fan is an axial fan; the axis of the axial fan is perpendicular to or parallel to the side of the light-emitting side of the lamp panel.
[0014] In some embodiments of this application, the axis of the axial fan is perpendicular to the side of the light-emitting side of the lamp panel; a support column is provided between the side of the axial fan facing the lamp panel and the lamp panel, so that there is a gap between the side of the axial fan facing the lamp panel and the lamp panel.
[0015] In some embodiments of this application, the axis of the axial fan is parallel to the side of the light-emitting side of the lamp panel; a plurality of the ventilation holes are formed on two opposite sidewalls of the housing along the axial direction of the axial fan.
[0016] In some embodiments of this application, a plurality of the vent holes are provided on different sidewalls of the housing;
[0017] The cooling fan is a volute fan, and the air outlet of the volute fan is directly opposite the vent on one side wall of the outer casing.
[0018] In some embodiments of this application, the video lamp further includes a heat dissipation component disposed within the second cavity.
[0019] 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.
[0020] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects:
[0021] In this invention, the light-emitting side of the lamp panel faces the light-emitting port; a light source is provided on the light-emitting side of the lamp panel, and the light source faces the light-emitting port. The light emitted by the light source passes through the light-emitting port and is projected onto the outside of the film and television light, achieving the effect of illumination.
[0022] The space inside the housing forms a first chamber and a second chamber on both sides of the lamp panel; the first chamber is located on the side of the lamp panel facing the light-emitting port on the housing. A cooling fan is installed in the first chamber; multiple vents are opened on the outer periphery of the housing, and these vents extend into the first chamber. The cooling fan drives airflow within the first chamber, allowing gas to enter and exit the first chamber through the vents and / or the light-emitting port, carrying heat from the first chamber to the outside of the housing. A cooling fan is installed on the light-emitting side of the lamp panel to directly and quickly remove the heat generated on the light-emitting side through air circulation, reducing heat accumulation on the light-emitting side and ensuring the luminous efficiency and color temperature of the lamp panel.
[0023] 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.
[0024] 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
[0025] 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.
[0026] Figure 1 This is a structural schematic diagram of the film and television lamp of this utility model.
[0027] Figure 2 A partial structural diagram of the film and television lamp of this utility model.
[0028] Figure 3 This is a structural schematic diagram of the first embodiment of the cooling fan of this utility model.
[0029] Figure 4 This is a schematic diagram of the installation of the first embodiment of the cooling fan of this utility model inside a film and television light.
[0030] Figure 5 yes Figure 4 A cross-sectional view of the structure.
[0031] Figure 6 This is a cross-sectional view of the film and television lamp of this utility model at one of the ventilation holes.
[0032] Figure 7 This is a cross-sectional view of the film and television lamp of this utility model at another vent.
[0033] Figure 8 This is a schematic diagram of one embodiment of the pressure block of this utility model inside a film and television lamp.
[0034] Figure 9 yes Figure 8 A schematic diagram of the structure from another perspective.
[0035] Figure 10 This is a schematic diagram of the installation of the second embodiment of the cooling fan of this utility model inside a film and television light.
[0036] Figure 11 This is a schematic diagram of the first installation position inside a video light according to the third embodiment of the cooling fan of this utility model.
[0037] Figure 12 This is a schematic diagram of the second installation position inside a video light according to the third embodiment of the cooling fan of this utility model.
[0038] Figure 13 This is a structural schematic diagram of the fourth embodiment of the cooling fan of this utility model.
[0039] 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; 121, air inlet; 122, air outlet; 130, heat dissipation hole; 140, lens; 150, push-fit structure; 160, bayonet structure; 170, inclined surface; 200, lamp board; 210, conductive terminal; 300, cooling fan; 400, pressure block; 410, guide rib; 420, guide groove; 500, heat dissipation assembly; 510, heat spreader; 520, heat pipe; 530, fins; 540, fan; 600, support column. Detailed Implementation
[0040] 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.
[0041] 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.
[0042] 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.
[0043] 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.
[0044] 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.
[0045] See Figure 1 and Figure 2 This application provides a film and television light, which is a device used for color temperature illumination in film and television shooting, capable of controlling light effects and shaping 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 within the housing 100. The housing 100 has a hollow structure, and an installation space is formed within the housing 100. A light outlet 110 extending into the housing 100 is opened on the outer periphery of the housing 100, and the light panel 200 is disposed within 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 onto the outside of the film and television light.
[0046] 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.
[0047] 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 upper side wall and the lower side wall; or, on the left side plate and the right side wall.
[0048] 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.
[0049] In some embodiments, the housing 100 includes a main housing and a front housing. The front side of the main housing is open, and the front housing covers the front side of the main housing. A light outlet 110 is formed on the front housing and extends through the wall thickness of the front housing in the front-rear direction.
[0050] In one embodiment, a plurality of vent holes 120 are formed on the front housing. The plurality of vent holes 120 are formed on the upper and lower parts of the front housing.
[0051] In another embodiment, a plurality of vent holes 120 are formed at the front end of the main housing, and a plurality of vent holes 120 are formed on the upper sidewall and the lower sidewall of the main housing.
[0052] 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.
[0053] 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.
[0054] See again Figures 1 to 2 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, with the light-emitting side of the light panel 200 facing 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.
[0055] 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.
[0056] 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.
[0057] In another embodiment, the light source is a DIP (dual in-line package) light source.
[0058] In this application, the space inside 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 located on the front side of the lamp panel 200, and the second chamber 102 is located on the rear side of the lamp panel 200.
[0059] In some embodiments, a plurality of vent holes 120 are provided on the outer periphery of the housing 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 film and television lamp through the vent holes 120.
[0060] 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.
[0061] 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.
[0062] Figure 3 This is a structural schematic diagram of the first embodiment of the cooling fan of this utility model. Figure 4 This is a schematic diagram of the installation of the first embodiment of the cooling fan of this utility model inside a film and television light. Figure 5 yes Figure 4 A cross-sectional view of the structure.
[0063] See Figures 3 to 5 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.
[0064] In this embodiment, the cooling fan 300 is a centrifugal fan; the central axis of the centrifugal fan is perpendicular to the light-emitting side of the lamp panel 200. The centrifugal fan has a smaller thickness along its own axis. When the centrifugal fan is placed in the first chamber 101, it will not cause excessive changes in the thickness direction of the first chamber 101, thereby effectively avoiding an increase in the volume of the film and television lamp in the front-to-back direction.
[0065] In some embodiments, a pressure block 400 is provided on the light-emitting side of the lamp panel 200. The pressure block 400 is arranged parallel to the lamp panel 200 and abuts against the light-emitting side of the lamp panel 200. A cooling fan 300 is fixed to the side of the pressure block 400 facing the light outlet 110. The pressure block 400 is provided on the light-emitting side of the lamp panel 200 to block the light-emitting side of the lamp panel 200 and protect the electronic components on the light-emitting side of the lamp panel 200.
[0066] 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 (not shown in the figure) corresponding to the light source. The light-transmitting hole is set corresponding to the light-emitting port 110, and the light from the light source can pass through the light-emitting port 110 and the light-transmitting hole.
[0067] In this application, there is a gap between the side of the pressure block 400 facing the light outlet 110 and the corresponding inner sidewall 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 a centrifugal fan and dissipate heat to the outside of the film and television lamp through the vent 120.
[0068] In some embodiments, the pressure block 400 has a receiving groove (not shown in the figure) on the side facing the light outlet 110, and the centrifugal fan is disposed in the receiving groove. The placement of the centrifugal fan in the receiving groove can effectively ensure that the thickness of the first chamber 101 in the front-back direction does not increase excessively or does not increase at all.
[0069] In some embodiments, 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 does not cause an increase in the thickness of the first chamber 101 in the front-back direction.
[0070] 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.
[0071] In one embodiment, the plurality of vents 120 include inlet vents 121 and outlet vents 122 disposed on different sidewalls of the housing 100; a receiving groove is disposed on the edge of the pressure block 400 and near the outlet vent 122; the receiving groove is open on the side facing the outlet vent 122. A centrifugal fan is disposed within the receiving groove, and the centrifugal fan draws air in along its own axial direction to move the gas in the first chamber 101 toward the centrifugal fan. The centrifugal fan discharges air radially to exhaust the gas from the outlet vent 122 on the housing 100, thereby discharging the gas in the first chamber 101 from the housing 100 and cooling the front side of the lamp panel 200.
[0072] In one embodiment, the air inlet 121 is disposed on the upper side wall of the housing 100, and the air outlet 122 is disposed on the lower side wall of the housing 100. In another embodiment, the air outlet 122 is disposed on the upper side wall of the housing 100, and the air inlet 121 is disposed on the lower side wall of the housing 100.
[0073] In another embodiment, the air inlet 121 and the air outlet 122 are respectively disposed on the left side wall and the right side wall of the housing 100.
[0074] In some embodiments, the pressure block 400 has a square structure, and the receiving slots are formed at the corners of the pressure block 400. Two receiving slots are provided, each located at a corner of the upper end of the pressure block 400. Correspondingly, two centrifugal fans are provided, each housed within one receiving slot, and located at two corners of the pressure block 400.
[0075] In some embodiments, the number of centrifugal fans is set to one, three, four, or other different quantities.
[0076] In this embodiment, the cooling fan 300 is a centrifugal fan. The axis of the centrifugal fan is perpendicular to the light-emitting side of the lamp panel 200. The centrifugal fan draws in air along its own axis and discharges air along its own radial direction. The centrifugal fan has a smaller thickness on its own axis relative to its own radial direction, so the arrangement of the centrifugal fan in the first chamber 101 has little impact on the thickness of the first chamber 101 in the front-back direction.
[0077] Figure 6 This is a cross-sectional view of the film and television lamp of this utility model at one of the ventilation holes. Figure 7 This is a cross-sectional view of the film and television lamp of this utility model at another vent.
[0078] See Figure 6 and Figure 7 and combined Figures 1 to 5At least some of the vent holes 120 have an angle between the axis 1201 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.
[0079] 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 170, and the axis 1201 of the vent 120 is perpendicular to the inclined wall 170, 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.
[0080] 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 170. The axis 1201 of the vent 120 is perpendicular to the inclined wall 170.
[0081] In some embodiments, the vent 122 is formed on the upper part of the front housing 180, and the axis 1201 of the vent 122 is inclined upward and forward.
[0082] In another embodiment, the air intake 121 is formed in the lower part of the front housing 180, and the axis 1201 of the air intake 121 is perpendicular to the normal 201 of the lamp panel.
[0083] In one specific embodiment, the angle between the axis 1201 of the vent hole 120 and the normal 201 of the lamp panel in the light emission direction is 60°.
[0084] In some embodiments, the angle between the axis 1201 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°.
[0085] In other embodiments, the angle between the axis 1201 of the vent 120 and the normal 201 of the lamp panel in the light emission direction is any angle between 0° and 60°. See again Figures 1 to 5 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.
[0086] In one embodiment, the heat dissipation assembly 500 includes a heat spreader 510, a heat pipe 520, and fins 530. The heat spreader 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 heat spreader 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 heat spreader 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.
[0087] In another embodiment, the heat dissipation assembly 500 includes a heat spreader 510, a heat pipe 520, fins 530, and a fan 540. After the heat on the fins 530 is transferred to the gas in the second chamber 102, the fan 540 drives the gas in the second chamber 102 to move to the outside of the outer casing 100 through the heat dissipation hole 130.
[0088] 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.
[0089] In another embodiment, the lamp panel 200 is provided with a cooling fan 300 only in the first chamber 101.
[0090] 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 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.
[0091] 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.
[0092] 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.
[0093] 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.
[0094] Figure 8This is a schematic diagram of one embodiment of the pressure block of this utility model inside a film and television lamp. Figure 9 yes Figure 8 A schematic diagram of the structure from another perspective.
[0095] See Figure 8 and Figure 9 and combined Figures 1 to 5 The pressure block 400 is disposed on the side of the lamp panel 200 facing the light outlet 110. A centrifugal fan is disposed on the side of the pressure block 100 facing the light outlet 110. The structure of the pressure block 400 and the centrifugal fan is as described above.
[0096] In some embodiments, a plurality of protruding guide ribs 410 are formed on the side of the pressure block 400 facing the light outlet 110, and the plurality of guide ribs 410 are spaced apart. The guide ribs 410 extend in a straight line or in an arc, and the guide ribs 410 extend toward or near the centrifugal fan.
[0097] Guide ribs 410 protrude from the pressure block 400 on the side facing the light outlet 110, and guide grooves 420 for gas flow are formed between the guide ribs 410. The guide ribs 410 extend toward or near the centrifugal fan to guide the gas in the first chamber 101 toward the centrifugal fan. When the centrifugal fan is working, the gas in the first chamber 101 moves toward the centrifugal fan through the guiding effect of the guide grooves 420. The gas is discharged from the first chamber 101 through the centrifugal fan and the air outlet 122, so as to quickly dissipate the heat in the first chamber 101 to the outside of the video lamp.
[0098] The guiding effect of the guide groove 420 makes the gas in the first chamber 101 flow towards the centrifugal fan more efficiently, so as to drive the gas in the first chamber 101 to flow faster and thus better dissipate heat.
[0099] In some embodiments, the guide groove 420 is configured as one, two, or more segments in the direction near the centrifugal fan.
[0100] In one embodiment, each centrifugal fan is provided with one or more sets of guide grooves 420. When multiple guide grooves 420 are provided, the multiple guide grooves 420 extend toward the centrifugal fan from different directions, so as to guide the gas at different positions toward the centrifugal fan, thereby better driving the gas flow in the first chamber 101.
[0101] In some embodiments, the guide grooves 420 are configured in multiple sets, and the multiple sets of guide grooves 420 are distributed around the central axis of the corresponding centrifugal fan. For example, the guide grooves 420 are configured in two sets for each centrifugal fan, one set of guide grooves 420 extending from the air inlet 121 toward the centrifugal fan, and the other set of guide grooves 120 extending from the light-transmitting hole on the pressure block toward the centrifugal fan.
[0102] In some embodiments, the guide rib 410 and the pressure block 400 can be an integrally formed structure. For example, the pressure block 400 is made of an aluminum substrate, while the guide rib 410 is a surface structure formed by processes such as cold extrusion and casting. In other feasible examples, the guide rib 410 and the pressure block 400 can be a separate bonded structure. For example, the guide rib 410 can be a thin plate similar to a heat sink fin and fixed to the surface of the pressure block 400 by processes such as welding.
[0103] Figure 10 This is a schematic diagram of the installation of the second embodiment of the cooling fan of this utility model inside a film and television light.
[0104] See Figure 10 and combined Figures 1 to 9 In the second embodiment of the cooling fan 300, the cooling fan 300 is an axial fan, which draws in and exhausts air along its own axial direction.
[0105] An axial fan is installed in the first chamber 101 inside the housing 100. The axis of the axial fan is perpendicular to the side of the light-emitting side of the lamp panel 200. The axial fan has a smaller thickness in its own axial direction so that the installation of the axial fan has little impact on the thickness of the first chamber 101 in the front-back direction, so as to avoid the film and television lamp having an excessively large front-back length.
[0106] In some embodiments, the axis of the axial fan is perpendicular to the side of the lamp panel 200 on the light-emitting side; a support column 600 is provided between the side of the axial fan facing the lamp panel 200 and the lamp panel 200. The support column 600 is used to support and install the axial fan, and the arrangement of the support column 600 creates a gap between the side of the axial fan facing the light outlet 110 and the lamp panel 200. When the axial fan is working, it drives the gas in the first chamber 101 to flow towards the axial fan and enter the axial fan through the gap between the axial fan and the lamp panel 200. The axial fan exhausts the gas from the light outlet 110 for heat dissipation of the lamp panel 200 in the first chamber 101. When the axial fan is working, gas from the external environment enters the first chamber 101 through the vent 120 and exits the outer casing 100 from the light outlet 110 for heat dissipation of the front side of the lamp panel 200 in the first chamber 101.
[0107] In other embodiments, a pressure block 400 is provided on the light-emitting side of the lamp panel 200, and a support column 600 is provided on the pressure block 400. One end of the support column 600 is provided on the pressure block 400, and the other end of the support column 600 is provided on the axial flow fan. There is a gap between the side of the axial flow fan facing the pressure block 400 and the pressure block 400.
[0108] Figure 11 This is a schematic diagram of the first installation position inside a video light according to the third embodiment of the cooling fan of this utility model. Figure 12This is a schematic diagram of the second installation position inside a video light according to the third embodiment of the cooling fan of this utility model.
[0109] See Figure 11 and Figure 12 and combined Figures 1 to 9 In the third embodiment of the cooling fan 300, the cooling fan 300 is an axial fan, which draws in and exhausts air along its own axis. The axial fan is disposed within the first chamber 101 inside the housing 100, and its axis is parallel to the side of the light-emitting side of the lamp panel 200. Multiple vents 120 are formed on two opposite sidewalls of the housing 100 along the axial direction of the axial fan. The axial fan drives the gas within the first chamber 101 to flow between the external environment and the surrounding environment. The vents 120 on opposite sidewalls of the housing 100 are for air intake on one sidewall and for air exhaust on the other sidewall.
[0110] In one embodiment, an axial fan is disposed within the first chamber 101 and near the upper sidewall of the housing 100.
[0111] In another embodiment, an axial fan is disposed within the first chamber 101 and near the lower sidewall of the housing 100.
[0112] In other embodiments, an axial fan is disposed within the first chamber 101, and the axis of the axial fan is parallel to the side of the light-emitting side of the lamp panel 200. A pressure block 400 is disposed on the light-emitting side of the lamp panel 200, and the axial fan is fixed to the side of the pressure block 400 facing away from the lamp panel 200.
[0113] In some embodiments, an axial fan is disposed near the upper or lower sidewall of the housing 100, and the axial fan is capable of drawing air from or expelling air from the external environment.
[0114] In one embodiment, the axial fan can also be fixed to the periphery of the lamp panel 200, such as the upper, lower, left, or right side of the lamp panel 200. The end of the axial fan facing the light outlet 110 extends beyond the light-emitting side of the lamp panel 200, thereby driving the gas flow in the first chamber 101 on the front side of the lamp panel 200.
[0115] In one embodiment, the axial fan can also be fixed to the periphery of the heat spreader 510, such as the upper, lower, left, or right side of the heat spreader 510. The end of the axial fan facing the light outlet 110 extends beyond the light-emitting side of the lamp panel 200, thereby driving the gas flow in the first chamber 101 on the front side of the lamp panel 200.
[0116] Figure 13 This is a structural schematic diagram of the fourth embodiment of the cooling fan of this utility model.
[0117] See Figure 13and combined Figures 1 to 9 The cooling fan 300 is a volute fan, which draws air in from both sides axially, and the outer casing 100 has an exhaust port along its radial direction. The exhaust port of the volute fan is directly opposite the vent 120 on one side wall of the outer casing 100. The axis of the volute fan is perpendicular to the side of the light-emitting side of the lamp panel 200. The volute fan has a smaller thickness in the axial direction, and when installed in the first chamber 101, it has little impact on the thickness of the first chamber 101 in the front-back direction.
[0118] Multiple vents 120 are provided on different side walls of the outer casing 100. The air outlet of the volute fan is directly opposite the vent 120 on one side wall of the outer casing 100 so that the gas in the first chamber 101 can be directly discharged from the outer casing 100.
[0119] It should be noted that in this application, the cooling fan 300 is installed inside the housing 100. When it drives the gas in the first chamber 101 to flow between the gas and the external environment, the vent 120 and the light outlet 110 can be used for air intake and air exhaust, respectively.
[0120] 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.
[0121] 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.
[0122] 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 in that, include: The outer casing has a light-emitting port that extends into the interior of 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; A cooling fan is disposed within the first chamber; The outer shell has multiple vent holes on the outer periphery of the light outlet; the multiple vent holes respectively penetrate into the first chamber.
2. The film and television light according to claim 1, characterized in that, 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.
3. The film and television light according to claim 2, characterized in that, A pressure block is provided on the light-emitting side of the lamp panel. The pressure block is arranged parallel to the lamp panel and abuts against the light-emitting side of the lamp panel. A receiving groove is opened on the side of the pressure block facing the light outlet. The centrifugal fan is arranged in the receiving groove.
4. The film and television light according to claim 3, characterized in that, The pressure block covers the light-emitting side of the lamp panel, and a light-passing hole is provided on the pressure block corresponding to the light source for penetration; there is a gap between the side of the pressure block facing the light outlet and the corresponding inner wall of the outer casing.
5. The film and television light according to claim 3, characterized in that, The plurality of vent holes include air inlets and air outlets disposed on different sidewalls of the housing; the receiving groove is disposed on the edge of the pressure block and close to the air outlet; the receiving groove is open on the side facing the air outlet.
6. The video lighting according to any one of claims 3 to 5, characterized in that, The pressure block has a plurality of protruding guide ribs on the side facing the light outlet; the plurality of guide ribs are spaced apart, and a guide groove for gas flow is formed between the guide ribs so as to guide the gas in the first chamber toward the centrifugal fan.
7. The film and television light according to claim 6, characterized in that, The guide grooves are configured in multiple groups, and the multiple groups of guide grooves are distributed around the central axis of the centrifugal fan.
8. The film and television light according to claim 1, characterized in that, The cooling fan is an axial fan; the axis of the axial fan is perpendicular to or parallel to the side of the light-emitting side of the lamp panel.
9. The film and television light according to claim 8, characterized in that, The axis of the axial fan is perpendicular to the side of the light-emitting side of the lamp panel; a support column is provided between the side of the axial fan facing the lamp panel and the lamp panel, so that there is a gap between the side of the axial fan facing the lamp panel and the lamp panel.
10. The video lighting according to claim 8, characterized in that, The axis of the axial fan is parallel to the side of the light-emitting side of the lamp panel; the plurality of ventilation holes are opened on two opposite side walls of the housing along the axis of the axial fan.
11. The film and television light according to claim 1, characterized in that, Multiple ventilation holes are provided on different sidewalls of the outer casing; The cooling fan is a volute fan, and the air outlet of the volute fan is directly opposite the vent on one side wall of the outer casing.
12. The film and television light according to claim 1, characterized in that, The video light also includes a heat dissipation component, which is disposed in the second chamber.
13. The film and television light according to claim 1, characterized in that, At least some of the vent holes have an angle greater than 0° and less than or equal to 90° with the normal of the lamp panel in the light emission direction.