WO2024109823A1 - 投影筒及摄影灯光系统 - Google Patents

投影筒及摄影灯光系统 Download PDF

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Publication number
WO2024109823A1
WO2024109823A1 PCT/CN2023/133375 CN2023133375W WO2024109823A1 WO 2024109823 A1 WO2024109823 A1 WO 2024109823A1 CN 2023133375 W CN2023133375 W CN 2023133375W WO 2024109823 A1 WO2024109823 A1 WO 2024109823A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
assembly
power supply
fan
projection
Prior art date
Application number
PCT/CN2023/133375
Other languages
English (en)
French (fr)
Inventor
曾伟均
Original Assignee
深圳市神牛摄影器材有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202223149988.7U external-priority patent/CN218917905U/zh
Priority claimed from CN202321570916.1U external-priority patent/CN220290017U/zh
Application filed by 深圳市神牛摄影器材有限公司 filed Critical 深圳市神牛摄影器材有限公司
Publication of WO2024109823A1 publication Critical patent/WO2024109823A1/zh

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/06—Special arrangements of screening, diffusing, or reflecting devices, e.g. in studio
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/55—Details of cameras or camera bodies; Accessories therefor with provision for heating or cooling, e.g. in aircraft
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating

Definitions

  • the present application relates to the technical field of photographic equipment, and in particular to a projection tube and a photographic lighting system.
  • a projection tube is installed on the photographic light.
  • the light emitted by the photographic light passes through the projection tube and the slide to produce various corresponding light effects.
  • the existing projection tube mainly adopts a passive heat dissipation method, which is to dissipate heat through the metal shell in the projection tube.
  • due to the high power of the photographic light after long-term use, more heat is accumulated on the shell, resulting in an extremely high temperature of the shell, which can reach more than 100°C. Therefore, it is easy to cause burns to people, or easily ignite various indoor flammable materials, and there are certain safety hazards.
  • One purpose of the present application is to solve the technical problem of the outer shell temperature increasing when the projection tube works for a long time.
  • a projection tube comprising: a body, on which a light inlet and a light outlet are provided, the light inlet can be connected to an external light source, an optical channel is provided between the light inlet and the light outlet, and the optical channel is arranged in the internal cavity of the body; a side wall of the body is provided with an air inlet and an air outlet, an air duct is formed between the air inlet and the air outlet, and the air duct intersects with the optical channel; a light effect component is arranged in the optical channel, and the light emitted by the light source enters from the light inlet, passes through the light effect component, and is emitted from the light outlet.
  • a fan is arranged in the internal cavity, and the fan generates airflow, the airflow enters from the air inlet, flows out from the air outlet, and takes out the heat in the internal cavity.
  • the projection tube further includes an optical lens group, and the optical lens group is disposed in the optical channel; the fan is disposed on the side of the optical lens group and/or the light effect component to remove heat from the optical lens group and/or the light effect component.
  • the optical lens group includes a light collecting lens assembly, which is located at the front end of the optical channel;
  • the fan includes a first fan, which is arranged on the side of the light collecting lens assembly, and the main body is provided with a first air inlet and a first air outlet corresponding to the first fan; the air flow enters from the first air inlet and flows out from the first air outlet to take away the heat from the light collecting lens assembly.
  • the optical lens group also includes a light cutting lens assembly, and the light effect assembly includes a projection film assembly; the light collecting lens assembly, the light cutting lens assembly and the projection film assembly are arranged in sequence along the light path; the light cutting lens assembly separates the internal cavity so that the light collecting lens assembly is located at the front side of the light cutting lens assembly, and the projection film assembly is located at the rear side of the light cutting lens assembly; the fan also includes a second fan, which is arranged on the side of the projection film assembly, and the main body is provided with a second air inlet and a second air outlet corresponding to the second fan; the air flow enters from the second air inlet and flows out from the second air outlet to take out the heat on the projection film assembly.
  • the main body includes a front shell assembly and a rear shell assembly
  • the optical lens group includes a light-collecting lens assembly and a light-emitting lens assembly
  • the light-collecting lens assembly is arranged in the rear shell assembly
  • the light-emitting lens assembly is arranged in the front shell assembly
  • the front shell assembly and the rear shell assembly are slidably connected, and the front shell assembly can be extended and retracted in the rear shell assembly, so that the distance between the light-collecting lens assembly and the light-emitting lens assembly changes, thereby changing the focal length of the projection tube.
  • a rack is provided on the outer wall of the front shell component;
  • the rear shell component includes a connecting tube, a focusing gear and a focusing knob, the front shell component is inserted into the connecting tube, the focusing gear is arranged on the inner side of the connecting tube and meshes with the rack, and the focusing knob is connected to the focusing gear.
  • the focusing knob rotates, driving the rack to move, so that the front shell assembly moves along the axial direction of the connecting cylinder.
  • the rear shell assembly further comprises a fixing knob, which is disposed on the connecting cylinder.
  • the fixing knob can move radially along the connecting cylinder and press against the front shell assembly to lock the front shell assembly in the connecting cylinder.
  • a socket is provided on the body, and the light effect component can be inserted into the optical channel through the socket, so that the light effect component is detachably connected to the body.
  • the light effect component includes a slide assembly and/or an aperture, and the slide assembly and/or the aperture can be inserted into the optical channel along the socket to change the light effect of the light.
  • the projection tube further includes a fixing spring sheet, which is arranged at both ends of the socket to form a locking position, and the projection film assembly and/or the diaphragm are inserted into the socket, and the fixing spring sheet undergoes elastic deformation to squeeze the projection film assembly and/or the diaphragm from the upper and lower sides to fix the projection film assembly and/or the diaphragm in the socket.
  • a fixing spring sheet which is arranged at both ends of the socket to form a locking position, and the projection film assembly and/or the diaphragm are inserted into the socket, and the fixing spring sheet undergoes elastic deformation to squeeze the projection film assembly and/or the diaphragm from the upper and lower sides to fix the projection film assembly and/or the diaphragm in the socket.
  • the main body includes a cylinder and a conductive connection end arranged on the cylinder, and the conductive connection end is used to be electrically connected to an external photography light so that the current of the photography light passes through the conductive connection end and supplies power to the projection tube.
  • a bayonet piece for assembling the photographic light is provided at one end of the body, and the conductive connection end is a metal contact, and the metal contact is arranged on the bayonet piece.
  • the projection tube also includes a power supply component, which is arranged inside the tube body;
  • the power supply component includes a built-in power supply for supplying power to the fan and a control circuit connected to the built-in power supply;
  • the control circuit is electrically connected to the conductive connection end, and detects whether there is current input at the conductive connection end; when the control circuit does not detect current input at the conductive connection end, the control circuit controls the built-in power supply to supply power to the fan to drive the fan to work.
  • the power supply component further includes a charging circuit, the charging circuit is electrically connected to the control circuit, and the charging circuit connects the built-in power supply to the conductive connection end; when the control circuit detects that there is current input at the conductive connection end, the charging circuit is controlled to The conductive connection end is connected to the built-in power supply so that the current of the photographic light charges the built-in power supply after passing through the conductive connection end.
  • a charging circuit the charging circuit is electrically connected to the control circuit, and the charging circuit connects the built-in power supply to the conductive connection end; when the control circuit detects that there is current input at the conductive connection end, the charging circuit is controlled to The conductive connection end is connected to the built-in power supply so that the current of the photographic light charges the built-in power supply after passing through the conductive connection end.
  • the power supply component also includes a charging interface connected to the charging circuit, the charging interface is connected to the built-in power supply through the charging circuit, and the cylinder is provided with a through hole matching the charging interface; the charging interface is partially placed outside the cylinder through the through hole, so that the charging interface can be connected to an external charging device to charge the built-in power supply.
  • the power supply component also includes a timer connected to the control circuit, and the timer can obtain a time signal when the built-in power supply generates current.
  • the control circuit can obtain the time signal and compare it with a preset time parameter to control the built-in power supply to stop supplying power to the fan.
  • the power supply component also includes a temperature sensor connected to the control circuit, and the temperature sensor is used to obtain a temperature signal inside the barrel.
  • the control circuit can obtain the temperature signal and compare it with a preset temperature parameter, and control the built-in power supply to stop supplying power to the fan.
  • a mounting position is provided on the inner side wall of the cylinder, and the mounting position is arranged at one end of the cylinder close to the light inlet, so that the built-in power supply can be fixedly installed on the mounting position through the light inlet in front of the cylinder.
  • a mounting position is provided on the inner side wall of the cylinder, and a mounting opening is opened on the side wall of the cylinder, and the mounting opening is arranged opposite to the mounting position;
  • the built-in power supply is a disposable battery, and the built-in power supply can be removably installed in the mounting position through the mounting opening;
  • the cylinder is also provided with a battery cover matching the mounting opening, and the battery cover is detachably connected to the mounting opening of the cylinder to close the mounting opening.
  • the present application also provides a photographic lighting system, comprising: a photographic light; a projection tube as described above; the projection tube is detachably connected to the photographic light and is electrically connected to the photographic light, so that the photographic light supplies power to a fan in the projection tube.
  • the present application provides a projection tube and a photographic lighting system, wherein a light inlet and a light outlet are provided on the body, the light inlet can be connected to an external light source, an optical channel is provided between the light inlet and the light outlet, and the optical channel is provided in the internal cavity of the body; a light effect component is provided in the optical channel, and light emitted by the light source enters from the light inlet, passes through the light effect component, and is emitted from the light outlet to produce various light effects.
  • the present application provides an air inlet and an air outlet on the side wall of the body, so that an air duct is formed between the air inlet and the air outlet, and the air duct intersects with the optical channel.
  • a fan is provided in the internal cavity of the body, and when the fan is working, the generated air flow enters from the air inlet, flows out from the air outlet after passing through the air duct, and takes the heat of the internal cavity of the body out to the external air, preventing the accumulation of heat on the shell, and can effectively reduce the temperature of the shell, and prevent the shell from being too high to cause harm to people or ignite various indoor flammable materials.
  • FIG1 is a schematic diagram of the three-dimensional structure of the projection tube in the first embodiment
  • FIG2 is a front view of the structure of the projection tube in FIG1;
  • FIG3 is a schematic cross-sectional view of the projection tube in FIG1;
  • FIG4 is a schematic diagram of a half-section structure of the sliding connection of the projection tube in FIG1 ;
  • FIG5 is a schematic diagram of the structure of the rear shell assembly, the front shell assembly and the light effect assembly of the projection tube in a separated state;
  • FIG6 is a schematic structural diagram of the rear housing assembly in FIG5 ;
  • FIG7 is a schematic structural diagram of the front housing assembly in FIG5;
  • FIG8 is a schematic diagram of the exploded structure of the projection tube in FIG1;
  • FIG9 is an enlarged schematic diagram of the exploded structure of the rear housing assembly and its internal devices in FIG8;
  • FIG10 is an enlarged schematic diagram of the exploded structure of the front housing assembly and its internal devices in FIG8;
  • FIG11 is a schematic diagram of the three-dimensional structure of the projection tube at an angle in the second embodiment
  • FIG12 is a schematic diagram of the three-dimensional structure of the projection tube in FIG11 from another angle;
  • FIG13 is a schematic diagram of the exploded structure of the projection tube in FIG11;
  • FIG14 is a schematic diagram of a partial three-dimensional structure of the shell of the projection tube in FIG13;
  • FIG15 is a schematic diagram of the three-dimensional structure of the control circuit of the projection tube in FIG13;
  • FIG16 is a schematic diagram of a cross-sectional top view of the projection tube in FIG11;
  • FIG17 is a schematic diagram of the exploded structure of the projection tube in the third embodiment.
  • FIG18 is a schematic diagram of a partial three-dimensional structure of the shell of the projection tube in FIG17;
  • FIG19 is a schematic diagram of the three-dimensional structure of the control circuit of the projection tube in FIG17;
  • FIG20 is a schematic side view of the projection tube in FIG17;
  • FIG. 21 is a circuit block diagram of the projection tube in Embodiment 2 and Embodiment 3.
  • 100 projection tube; 10, body; 101, light inlet; 102, light outlet; 103, optical channel; 104, air duct; 11, rear shell assembly; 111, connecting tube; 112, shell; 1121, upper shell; 1122, lower shell; 1120, air outlet; 1123, first air outlet; 1124, second air outlet; 1130, air inlet; 1125, first air inlet; 1126, second air inlet; 1127, socket; 113, fixed spring; 114, chuck; 115, contact detection device; 116, bayonet; 117, light shielding body; 118, body fixing plate; 119, fixing knob; 1101, focusing knob; 1102, focusing gear; 1103, fixing seat; 12, front shell assembly; 121, lens blocking plate; 122, front body; 1220, rack; 123, front shell; 124, front cover; 1241, movable Buckle; 12411, fastening knob; 12412, spring; 12413, retaining spring; 1242, fixing
  • first and second are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.
  • the features defined as “first” and “second” may explicitly or implicitly include one or more of the features.
  • the meaning of “plurality” is two or more, unless otherwise clearly and specifically defined.
  • the present application provides a projection tube 100, including a body 10, a light effect component 21, an optical lens group 22, and a fan 30.
  • the light effect component 21 and the optical lens group 22 are arranged in the body 10 to adjust the light emitted by the projection lamp to achieve the desired light effect.
  • the fan 30 is arranged on the body 10 to take out the heat inside the body 10 to reduce the internal temperature of the projection tube 100.
  • the body 10 is provided with a light inlet 101 and a light outlet 102 on both sides, the light inlet 101 can be connected to an external video light, an optical channel 103 is provided between the light inlet 101 and the light outlet 102, and the optical channel 103 is provided in the internal cavity of the body 10, so that the light emitted by the video light can enter from the light inlet 101 at one end of the optical channel 103 and be emitted from the light outlet 102 at the other end.
  • the side wall of the body 10 is provided with an air inlet 1130 and an air outlet 1120, and an air duct 104 is formed between the air inlet 1130 and the air outlet 1120, and the air duct 104 intersects with the optical channel 103.
  • the body 10 includes a front shell assembly 12 and a rear shell assembly 11.
  • the front shell assembly 12 and the rear shell assembly 11 are slidably connected, so that the front shell assembly 12 can be extended and retracted at the front end of the rear shell assembly 11.
  • a light-emitting lens assembly 223 is provided in the optical channel 103 in the front shell assembly 12.
  • the horizontal position of the light-emitting lens assembly 223 changes, and the relative position between the light-emitting lens assembly 223 and the light-receiving lens assembly 221 in the rear shell assembly 11 changes, thereby changing the focal length of the projection tube 100.
  • the distance of the light effect projected by the projection tube 100 can be changed to adapt to different application environments.
  • the rear shell component 11 includes a connecting tube 111, a focusing gear 1102 and a focusing knob 1101.
  • the front shell component 12 is entirely inserted into the connecting tube 111 and can slide relative to the connecting tube 111.
  • the focusing gear 1102 is arranged on the inner side of the connecting tube 111, and the focusing knob 1101 is arranged on a fixed seat 1103 on the outer side of the connecting tube 111 and is fixedly connected to the focusing gear 1102.
  • a rack 1220 is arranged on the front body 122 of the front shell component 12; the rack 1220 is arranged axially along the front shell component 12, and when the front shell component 12 is inserted into the connecting tube 111 of the rear shell component 11, the rack 1220 is meshed with the focusing gear 1102.
  • the focus knob 1101 is rotated, the focus gear 1102 is rotated, and the focus gear 1102 drives the rack 1220 to move, so that the front shell assembly 12 moves along its axis in the connecting tube 111.
  • the rear shell assembly 11 further includes a fixing knob 119, which is disposed at the bottom of the connecting cylinder 111.
  • the fixing knob 119 passes through the gasket and is connected to the connecting cylinder 111.
  • the fixing knob 119 can move along the radial direction of the connecting cylinder 111.
  • the fixing knob 119 rotates toward the axis of the connecting cylinder 111, it presses the front shell assembly 12 and locks the front shell assembly 12 in the connecting cylinder 111.
  • the fixing knob 119 rotates in the opposite direction and moves away from the axis of the connecting cylinder 111, the front shell assembly 12 is unlocked and can move freely along the axis.
  • the light effect assembly 21 in this embodiment includes an aperture 211 and a projection film assembly 212.
  • the optical lens group 22 includes a light collecting lens assembly 221, a light cutting lens assembly 222 and a light emitting lens assembly 223.
  • the light collecting lens assembly 221, the light cutting lens assembly 222, the aperture 211, the projection film assembly 212 and the light emitting lens assembly 223 are sequentially arranged along the light path.
  • the light collecting lens assembly 221, the light cutting lens assembly 222, the aperture 211 and the projection film assembly 212 are all arranged in the optical channel 103 of the rear shell assembly 11, and the light emitting lens assembly 223 is arranged in the optical channel 103 of the front shell assembly 12.
  • the light cutting lens assembly 222 separates the internal cavity on the rear shell assembly 11, so that the light collecting lens assembly 221 is arranged on the front side of the light cutting lens assembly 222, and the aperture 211 and the projection film assembly 212 are arranged on the rear side of the light cutting lens assembly 222.
  • the fan 30 in this embodiment is disposed in the inner cavity of the rear housing assembly 11 and is disposed on the outer peripheral side of the optical channel 103 so that the optical channel 103 is not blocked.
  • the air inlet 1130 and the air outlet 1120 are provided, and the air inlet 1130 and the air outlet 1120 form an air duct 104, and the air duct 104 intersects with the optical channel 103.
  • the fan 30 generates airflow when it works, so that the airflow enters from the air inlet 1130 and flows out from the air outlet 1120, and takes out the heat in the inner cavity of the rear shell assembly 11.
  • the fan 30 takes out the internal heat in the projection tube 100, which can effectively reduce the temperature of the shell, prevent the shell temperature from being too high to cause harm to people, or ignite various indoor flammable materials.
  • the light-collecting lens assembly 221 in this embodiment is located at the front end of the optical channel 103 , receives the most light, generates the most heat, and is the largest heat source in the projection tube 100 .
  • the fan 30 includes only the first fan 31, and the first fan 31 is disposed on the side of the light collecting lens assembly 221.
  • the body 10 is provided with a first air inlet 1125 and a first air outlet 1123 corresponding to the first fan 31.
  • the airflow enters from the first air inlet 1125, passes through the light collecting lens assembly 221, and then flows out from the first air outlet 1123 to remove the heat from the light collecting lens assembly 221.
  • the number of the first fans 31 can be multiple.
  • the first fans 31 are both provided at the first air inlet 1125 and the first air outlet 1123 to enhance the heat dissipation effect on the light collecting lens assembly 221 and make the heat dissipation of the light collecting lens assembly 221 faster.
  • the fan 30 includes a first fan 31 and a second fan 32, which are respectively arranged on the front and rear sides of the light-cutting lens assembly 222. Please refer to FIG. 3 for details.
  • the first fan 31 is still arranged on the peripheral side of the light-collecting lens assembly 221 to remove the heat of the light-collecting lens assembly 221.
  • the second fan 32 is arranged on the side of the projection film assembly 212, and the body 10 is provided with a second air inlet 1126 and a second air outlet 1124 corresponding to the second fan 32; the airflow enters from the second air inlet 1126, passes through the projection film assembly 212, and then flows out from the second air outlet 1124 to remove the heat on the projection film assembly 212.
  • the light collecting lens assembly 221 When the light passes through the light collecting lens assembly 221, the light emitted by the photographic light is gathered, and then the shape of the light passing through the light cutting lens assembly 222 is changed, and then the light aperture is limited by the aperture 211, and finally irradiated onto the slide assembly 212. At this time, the light intensity has been greatly weakened, but it is still
  • the slide assembly 212 will generate some heat, and the slide assembly 212 is generally a metal sheet, and low heat will still cause the slide assembly 212 to heat up and deform.
  • the second fan 32 disposed on the side of the slide assembly 212 can effectively dissipate heat from the slide assembly 212 to prevent the slide assembly 212 from heating up and deforming.
  • a fan 30 may be separately provided to dissipate heat from the slide assembly 212 to solve the technical problem that the slide assembly 212 is easily deformed.
  • the first fan 31 and the second fan 32 are both arranged at the bottom of the light collecting lens assembly 221 and the slide film assembly 212.
  • the air flow enters from the bottom of the rear shell assembly 11 and flows out from the top to dissipate heat for the light collecting lens assembly 221 and the slide film assembly 212.
  • first fan 31 and the second fan 32 may also be any device that generates air flow, such as an air pump and a rectifier.
  • the relative positions of the first fan 31, the second fan 32, the air inlet and the air outlet may also be changed accordingly, as long as the air flow can pass through the light collecting lens assembly 221 and the projection film assembly 212 to reduce their temperature.
  • the slide assembly 212 and the diaphragm 211 in this embodiment are detachably connected to the housing 112 , so that the slide assembly 212 and the diaphragm 211 can be replaced at any time.
  • a socket 1127 is provided on the housing 112 of the rear housing assembly 11, and the projection film assembly 212 can be inserted into the optical channel 103 through the socket 1127.
  • the aperture 211 can also be inserted into the optical channel 103 along the socket 1127 and is located between the projection film assembly 212 and the light-cutting lens assembly 222.
  • the provision of the socket 1127 enables the projection film assembly 212 and the aperture 211 to be replaced at any time.
  • the projection film assembly 212 and the aperture 211 may be inserted together or one of them may be inserted separately.
  • the rear housing assembly 11 further includes a fixing spring 113 for fixing the inserted slide assembly 212 and/or the aperture 211 .
  • each fixing spring 113 is provided with two springs that can be elastically deformed up and down.
  • the springs of the fixing spring 113 are moved from the top to the bottom. The two sides of the lower part squeeze the slide assembly 212 and the diaphragm 211 to fix the slide assembly 212 and the diaphragm 211 in the socket 1127.
  • the slide assembly 212 and the diaphragm 211 need to be replaced, just pinch the handle on it and lift it upward, so that the fixing spring piece 113 can be elastically deformed, and then the slide assembly 212 and the diaphragm 211 can be pulled out.
  • the spring piece of the fixing spring piece 113 is limited from the upper and lower sides, and the slide assembly 212 or the diaphragm 211 can be fixed by inserting it alone.
  • the projection tube 100 further includes a bracket assembly 40 for supporting the body 10 of the projection tube 100.
  • U-shaped seats 41 are fixed on both sides of the rear shell assembly 11 of the body 10, and the bracket assembly 40 is connected to the U-shaped seat 41 to achieve a rotational connection between the bracket assembly 40 and the rear shell assembly 11.
  • the rear housing assembly 11 in this embodiment includes a housing 112, and the housing 112 further includes an upper housing 1121 and a lower housing 1122, and the upper housing 1121 and the lower housing 1122 are connected by bolts.
  • the housing 112 is divided into two parts, which can facilitate the installation and replacement of the internal device.
  • an air inlet is provided on the lower housing 1122
  • an air outlet is provided on the upper housing 1121
  • a mounting portion for mounting the fan 30 is provided on the lower housing 1122; and it is arranged at the air inlet.
  • the rear shell assembly 11 also includes a chuck 114, a contact detection device 115 and a bayonet 116.
  • the light-inlet end of the housing 112 is connected to the bayonet 116 and the chuck 114 in sequence through bolts.
  • the chuck 114 can be used to connect and fix the projection lamp to the light inlet 101 side of the projection tube 100.
  • the chuck 114 is also provided with a contact detection device 115 on the side facing the bayonet 116, which is used for fixing and detecting the chuck 114 when it is connected to the projection lamp.
  • the rear housing assembly 11 further includes a light shielding body 117 and a body fixing piece 118.
  • the light shielding body 117 is arranged at the end of the housing 112 away from the chuck 114, so that the light passing through the projection film assembly 212 can pass through the light shielding body 117 to prevent light leakage.
  • the body fixing piece 118 is also arranged in the card slot at the end of the housing 112 away from the chuck 114, and is connected to the connecting cylinder 111 by bolts to achieve a fixed connection between the housing 112 and the connecting cylinder 111.
  • the front housing assembly 12 includes a lens baffle 121, a front body 122, a front housing 123, and a front cover 124.
  • the lens baffle 121 is disposed in the front body 122 to fix the light-emitting lens assembly 223 inside the front body 122.
  • the front housing 123 and the front cover 124 are connected to the other end of the front body 122 in sequence.
  • two parallel ribs are provided on the front body 122 for connecting with the rack 1220 .
  • the end surface of the front cover 124 is provided with three fixed buckles 1242 and one movable buckle 1241, forming a slot surface.
  • the fastening knob 12411 passes through the spring 12412, the movable buckle 1241, and the retaining spring 12413 in sequence to connect with the front cover 124, so as to realize the detachable connection between the movable buckle 1241 and the front cover 124.
  • the accessories of the slot surface of the front cover 124 can be replaced and fastened.
  • a fan 30 is arranged at the bottom of the internal cavity of the body 10, and an air inlet and an air outlet are provided on the side wall of the body 10 to form an air duct 104.
  • the air duct 104 intersects with the optical channel 103.
  • the power supply of the fan 30 in the existing projection tube 100 is provided by the external video light.
  • the video light When the video light is turned off, its power output will stop, causing the fan 30 in the projection tube 100 to stop working.
  • a large amount of residual heat is still accumulated in the projection tube 100 and cannot be quickly discharged, so the lenses in the light collecting lens group are still in danger of breaking due to heat; this greatly reduces the service life of the lenses, and frequent replacement of lenses will also greatly increase the use cost of the projection tube.
  • the work of replacing lenses is cumbersome, which greatly affects the user experience.
  • This embodiment provides a photographic lighting system, including a photographic light and a projection tube 100.
  • the photographic light is provided with contacts, which are connected to a power source in the photographic light.
  • the projection tube 100 is also provided with corresponding metal contacts 51. When the projection tube 100 is detachably connected to the photographic light, the metal contacts 51 on the projection tube 100 cooperate with the contacts on the photographic light, so that the photographic light can supply power to the projection tube 100.
  • this embodiment provides a projection tube 100, including a body 10, a fan 30, and a power supply assembly 60.
  • the fan 30 is disposed in the body 10 and is used to power the projection tube 100. Heat dissipation.
  • the power supply assembly 60 is also disposed in the body 10. When the video light connected to the projection tube 100 is turned off, the power supply assembly 60 in the projection tube 100 can still drive the fan 30 to work and dissipate heat from the projection tube 100.
  • the video light provides working voltage to the fan 30, and the fan 30 dissipates heat from the projection tube 100.
  • the video light when the video light is turned off, it will stop outputting voltage to the projection tube 100.
  • the power supply component 60 inside the projection tube 100 will start and provide working voltage to the fan 30, so that the fan 30 can continue to work for a period of time after the video light is turned off, so that the residual heat in the projection tube 100 can be smoothly discharged.
  • the main body 10 of the projection tube 100 includes a tube body 50 and a conductive connection end disposed on the tube body 50.
  • the conductive connection end can abut against a contact on the photographic light to achieve electrical connection, so that the current on the photographic light can supply power to the projection tube 100 through the conductive connection end.
  • One end of the body 10 of this embodiment is provided with a bayonet 116 for assembling the video light, and the conductive connection end is arranged on the bayonet 116.
  • the conductive connection end in this embodiment is a metal contact 51, which is arranged on the end surface of the bayonet 116 that is connected to the video light.
  • the conductive connection end on the barrel 50 can be a conductive structure such as a jack or socket; correspondingly, the end surface of the video light is also provided with a conductive structure such as a plug that matches it.
  • the barrel 50 of this embodiment is formed by splicing a front shell component 12 and a rear shell component 11.
  • a light inlet 101 is provided at one end of the barrel 50, and a light outlet 102 is provided on the other end surface of the barrel 50.
  • the inner hollow of the barrel 50 forms a receiving channel for receiving devices such as a light effect device, a fan 30 and a power supply component 60.
  • the light emitted by the photography light can be emitted through the light inlet 101, the light effect device and the light outlet 102 in sequence.
  • the bayonet 116 of this embodiment is provided at one end of the light inlet 101 of the housing 112 for connecting with the video light.
  • the bayonet 116 is provided with a through hole, which is arranged opposite to the light inlet 101 on the housing 112 so that light can pass through the bayonet 116 smoothly.
  • the metal contact 51 in this embodiment is disposed on the end surface of the bayonet member 116 facing away from the housing 112. It should be understood that in some other embodiments, the projection tube 100 is not provided with the bayonet 116 . In this case, the metal contact 51 is disposed on the end surface of the tube body 50 that is connected to the video light.
  • the light effect device includes a light collecting lens assembly 221 and a light effect assembly 21.
  • the light effect assembly 21 may include a stop 211, a slide assembly 212 and other components that can change the light effect.
  • the light effect assembly 21 may be inserted into the receiving channel in the housing 112 through the socket 1127 on the housing 112, so that the light emitted by the photographic lamp can pass through the light effect assembly 21 in the receiving channel and produce various lighting effects.
  • two symmetrical bases 55 are further provided on the cylinder 50 for connecting with the bracket assembly 40 , so that the bracket assembly 40 can be quickly connected to the bases 55 of the cylinder 50 .
  • a mounting position 52 is provided on the inner wall of the cylinder 50.
  • the mounting position 52 is arranged at one end of the light inlet 101 of the cylinder 50, so that the built-in power supply 61 can be fixedly installed on the mounting position 52 through the front light inlet 101 on the cylinder 50, and the control circuit board 62 is detachably connected above the mounting position 52.
  • the power supply assembly 60 in this embodiment is arranged on the inner wall of the lower shell 1122, close to one end of the light inlet 101 of the cylinder 50, and is located on the side of the fan 30.
  • the power supply assembly 60 can be installed on the lower shell 1122 through the light inlet 101.
  • the power supply assembly 60 can also be installed on the inner wall of the lower shell 1122 first, and then the lower shell 1122 and the upper shell 1121 are docked and assembled to form a accommodating cavity.
  • the power supply assembly 60 is arranged on one side of the fan 30, and the power supply assembly 60 can also be cooled by the flowing airflow to prevent the power supply assembly 60 from being damaged due to excessive temperature.
  • housing 112 may also be an integrated structure, and the position of the power supply assembly 60 in the cylinder 50 may also be adaptively adjusted as long as it does not affect the passage of light and the installation of other light effect devices.
  • a separate built-in power supply 61 is provided in the barrel 50 to power the fan 30. Even if the metal contact 51 on the bayonet 116 is disconnected from the photographic light, the fan 30 can continue to be driven to work.
  • the power supply assembly 60 includes a built-in power supply 61 for supplying power to the fan 30 and a control circuit 623 electrically connected to the built-in power supply 61.
  • the control circuit 623 is electrically connected to the metal contact 51 and detects whether the current at the metal contact 51 is input. When the current at the contact 51 is not input, the control circuit 623 controls the built-in power supply 61 to supply power to the fan 30, so that the fan 30 is turned on to dissipate heat from the cylinder 50.
  • the built-in power source 61 inside the cylinder 50 can be a rechargeable battery, an energy storage capacitor, a disposable battery, etc.
  • the control circuit 623 in this embodiment is integrated on the control circuit board 62 (PCB board), and the control circuit 623 is electrically connected to the metal contact 51 on the barrel 50, the built-in power supply 61 and the fan 30 respectively.
  • the control circuit 623 will control the built-in power supply 61 to supply power to the fan 30, so that the fan 30 can continue to work and continue to cool down the light collecting lens assembly 221 and the light effect assembly 21 of the optical lens group 22 on the projection barrel 100, which can effectively prevent the lenses on the light collecting lens assembly 221 and the light effect assembly 21 from breaking due to heat.
  • the power supply assembly 60 further includes a charging circuit 624, and the charging circuit 624 is electrically connected to the control circuit 623.
  • the built-in power supply 61 is electrically connected to the metal contact 51 through the charging circuit 624.
  • the control circuit 623 controls the charging circuit 624 to connect the metal contact 51 with the built-in power supply 61, and is able to shunt the current of the photographic light so that part of the current passes through the metal contact 51 and charges the built-in power supply 61.
  • the charging circuit 624 is also integrated on the control circuit board 62, and the charging circuit 624 electrically connects the metal contact 51 and the built-in power supply 61.
  • the control circuit 623 receives the signal of the current input at the metal contact 51, the control circuit 623 controls the charging circuit 624 to connect the metal contact 51 with the built-in power supply 61, so that part of the current of the video light charges the built-in power supply 61.
  • the control circuit 623 and the charging circuit 624 are integrated on a control circuit board 62, and the metal contact 51 is connected to the built-in power supply 61 through the charging circuit 624.
  • the control circuit 623 controls part of the current of the video light to flow through the charging circuit 624 and then enter the built-in power supply 61 to charge the built-in power supply 61, so that the built-in power supply 61 can maintain power at any time. In this way, there is no need to manually charge the built-in power supply 61, and its operation is more convenient.
  • the power supply component 60 further includes The charging interface 621 is electrically connected to the built-in power supply 61 through the charging circuit 624 , and the charging interface 621 can be connected to an external charging device to charge the built-in power supply 61 .
  • the charging interface 621 is provided on the control circuit board 62 and is electrically connected to the built-in power supply 61 through the charging circuit 624.
  • the charging interface 621 can be connected to an external charging device, and the external charging device can directly charge the built-in power supply 61.
  • the charging interface 621 in this embodiment is a DC charging interface 621, which can quickly charge the built-in power supply 61 to quickly charge the built-in power supply 61, saving charging time.
  • the charging interface 621 may also be directly electrically connected to the built-in power supply 61 to charge the built-in power supply 61. That is, the charging circuit 624 is directly provided on an external charging device.
  • the barrel 50 is provided with a through hole matching the charging interface 621 , and the charging interface 621 passes through the through hole and is partially placed outside the barrel 50 , so that the charging interface 621 can be connected to an external charging device.
  • the charging interface 621 is arranged on the side of the control circuit 623 board and protrudes outward laterally.
  • a corresponding through hole is provided on the shell 112 of the cylinder 50, and the through hole is provided at the bottom of the shell 112.
  • a groove is provided on the outer surface of the shell 112 with the through hole, so that the operator can find the charging interface 621 conveniently to quickly connect with the external charger.
  • the power supply component 60 further includes a timer 625 , so that the control circuit 623 can cut off the working current of the built-in power supply 61 to the fan 30 within a preset time.
  • the power supply component 60 includes a timer 625 electrically connected to the control circuit 623.
  • the timer 625 can obtain a time signal when the built-in power supply 61 generates current.
  • the control circuit 623 can compare the obtained time signal with a preset time parameter and control the built-in power supply 61 to stop supplying power to the fan 30.
  • the timer 625 is also integrated on the control circuit board 62 and is electrically connected to the control circuit 623.
  • a preset time parameter such as two minutes, is set on the control circuit 623.
  • the control circuit 623 will control the built-in power supply 61 to continue to supply power to the fan 30, so that the fan 30 can continue to work.
  • the timer 625 starts to count the time for the built-in power supply 61 to supply power.
  • the timer 625 starts to count the time for the built-in power supply 61 to supply power.
  • the control circuit 623 cuts off the power supply from the built-in power supply 61 to the fan 30, so that the fan 30 stops working.
  • the power supply component 60 further includes a temperature sensor 626 , so that the control circuit 623 can cut off the operating current from the built-in power supply 61 to the fan 30 at a preset temperature.
  • the power supply assembly 60 includes a temperature sensor 626 electrically connected to the control circuit 623, and the temperature sensor 626 is used to obtain a temperature signal in the barrel 50.
  • the control circuit 623 can obtain the temperature signal and compare it with a preset temperature parameter, and control the built-in power supply 61 to stop supplying power to the fan 30.
  • the temperature sensor 626 is also integrated on the control circuit board 62.
  • a preset temperature parameter such as 30°C, is set in the control circuit 623.
  • the control circuit 623 will control the built-in power supply 61 to continue to supply power to the fan 30, so that the fan 30 can continue to work.
  • the temperature sensor 626 detects the temperature inside the barrel 50, and transmits the measured temperature signal to the control circuit 623 for comparison with the preset temperature parameter.
  • the control circuit 623 will cut off the power supply of the built-in power supply 61 to the fan 30, so that the fan 30 stops working.
  • this embodiment sets a separate built-in power supply 61 and a control circuit 623 on the inner wall of the barrel 50, and makes the control circuit 623 electrically connected to the built-in power supply 61 and the metal contact 51 on the barrel 50 respectively.
  • the control circuit 623 detects that the current input to the metal contact 51 stops, the control circuit 623 drives the built-in power supply 61 to supply power to the fan 30, so as to drive the fan 30 to work. Even after the external photography light connected to the projection barrel 100 stops supplying power, the built-in power supply 61 set inside the projection barrel 100 can still supply power to the fan 30.
  • the residual heat inside the projection barrel 100 can be discharged to the outside in time through the fan 30, effectively preventing the lens in the light effect device from bursting due to high temperature, which greatly improves the service life of the lens, reduces the use cost of the projection barrel 100, and provides a better use experience for the user.
  • a mounting opening 53 is provided on the side wall of the barrel 50, and the mounting opening 53 is arranged opposite to the mounting position 52 on the barrel 50.
  • the built-in power supply 61 can be installed in the mounting position 52 through the mounting opening 53, and the built-in power supply 61 can also be removed through the mounting opening 53, without the need to remove the light effect accessories of the projection barrel 100.
  • the control circuit board 62 is provided with limit plates 622 at both ends.
  • the limit plates 622 are located at both ends of the installation position 52.
  • the limit plates 622 can also limit the built-in power supply 61 to prevent the built-in power supply 61 from moving in the installation position 52.
  • the projection tube 100 further includes a battery cover 54 matching the mounting opening 53, and the battery cover 54 is detachably connected to the mounting opening 53 of the tube body 50 to close the mounting opening 53. Closing the mounting opening 53 by the detachable battery cover 54 can prevent the built-in power supply 61 from falling out of the mounting opening 53, and increase the aesthetics of the tube body 50.
  • the built-in power source 61 can be easily and quickly removed by providing a mounting port 53 and a battery cover 54 on the barrel 50, which facilitates the replacement of the built-in power source 61. Even if the built-in power source 61 is a disposable battery with a high replacement frequency, it will not affect the use efficiency of the photographic barrel, further improving the user experience.

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Abstract

一种投影（100）及摄影灯光系统，包括本体（10）、光效组件（21）和风扇（30）；本体（10）上设有进光口（101）和出光口（102），进光口（101）可与外部的光源相接，进光口（101）和出光口（102）之间设有光学通道（103），光学通道（103）设置于本体（10）的内部空腔中；本体（10）的侧壁设置有进风口（1130）和出风口（1120），进风口（1130）与出风口（1120）之间形成风道（104），风道（104）与光学通道（103）相交；光效组件（21）设置在光学通道（103）中，光源发出的光线从进光口（101）进入，通过光效组件（21）后，从出光口（102）射出，以产生各种光效；风扇（30）设置在内部空腔内，风扇（30）产生气流，气流从进风口（1130）进入，从出风口（1120）流出，将内部空腔内的热量带出，可以防止热量聚集到外壳上，有效的降低外壳的温度，防止外壳的温度过高对人造成伤害，或引燃各种室内的易燃物。

Description

投影筒及摄影灯光系统
本申请要求于2022年11月25日提交中国专利局，申请号为2022231499887，发明名称为“投影筒”的中国专利申请的优先权；以及于2023年06月16日提交中国专利局，申请号为2023215709161，发明名称为“投影筒及摄影灯光系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及摄影器械技术领域，特别涉及一种投影筒及摄影灯光系统。
背景技术
在传统的摄影灯光中，为了能在光效中增加投影效果，其均会在摄影灯光上加装投影筒，摄影灯所射出的光透过投影筒和投影片后产生各种相应的光效；但随着现有摄影灯的功率越来越大，在长时间工作后，其所产生的热量也越来越大，而现有的投影筒主要采用被动散热的方式，其为通过投影筒中的金属外壳进行散热，但由于摄影灯的功率较大，长时间使用后，其外壳上聚集的热量较多，导致外壳的温度极高，可达到100℃以上，故其容易对人造成烫伤，或者容易引燃各种室内的易燃物，其存在一定的安全隐患。
发明内容
本申请的一个目的在于解决投影筒长时间工作外壳温度升高的技术问题。
为解决上述技术问题，本申请提供一种投影筒，包括：本体，其上设有进光口和出光口，所述进光口可与外部的光源相接，所述进光口和所述出光口之间设有光学通道，所述光学通道设置于所述本体的内部空腔中；所述本体的侧壁设置有进风口和出风口，所述进风口与所述出风口之间形成风道，所述风道与所述光学通道相交；光效组件，设置在所述光学通道中，所述光源发出的光线从所述进光口进入，通过所述光效组件后，从所述出光口射出， 以产生各种光效；风扇，设置在所述内部空腔内，所述风扇产生气流，所述气流从所述进风口进入，从所述出风口流出，将所述内部空腔内的热量带出。
可选地，所述投影筒还包括光学镜片组，所述光学镜片组设置在所述光学通道内；所述风扇设置在所述光学镜片组和/或所述光效组件侧边，以将所述光学镜片组和/或所述光效组件上的热量带出。
可选地，所述光学镜片组包括收光镜片组件，所述收光镜片组件位于所述光学通道的前端；所述风扇包括第一风扇，所述第一风扇设置在所述收光镜片组件的侧边，所述本体上设有与所述第一风扇对应的第一进风口和第一出风口；气流从所述第一进风口进入，从所述第一出风口流出，以将所述收光镜片组件上的热量带出。
可选地，所述光学镜片组还包括切光镜片组件，所述光效组件包括投影片组件；所述收光镜片组件、所述切光镜片组件和所述投影片组件沿光路依次设置；所述切光镜片组件将所述内部空腔分隔开，使所述收光镜片组件位于所述切光镜片组件前侧，所述投影片组件位于所述切光镜片组件的后侧；所述风扇还包括第二风扇，所述第二风扇设置在所述投影片组件的侧边，所述本体上设有与所述第二风扇对应的第二进风口和第二出风口；气流从所述第二进风口进入，并从所述第二出风口流出，以将所述投影片组件上的热量带出。
可选地，所述本体包括前壳组件和后壳组件，所述光学镜片组包括收光镜片组件和出光镜片组件；所述收光镜片组件设置在所述后壳组件内，所述出光镜片组件设置在所述前壳组件内；所述前壳组件和所述后壳组件滑动连接，所述前壳组件可在所述后壳组件内伸缩，使所述收光镜片组件与所述出光镜片组件的距离发生变化，进而改变所述投影筒的焦距。
可选地，所述前壳组件的外壁上设有齿条；所述后壳组件包括连接筒、调焦齿轮和调焦旋钮，所述前壳组件穿设在所述连接筒内，所述调焦齿轮设置在所述连接筒内侧，并与所述齿条啮合，所述调焦旋钮与所述调焦齿轮连 接；通过转动所述调焦旋钮，使所述调焦齿轮转动，驱动所述齿条移动，使所述前壳组件沿所述连接筒的轴线方向移动。
可选地，所述后壳组件还包括固定旋钮，所述固定旋钮设置在所述连接筒上，所述固定旋钮可沿所述连接筒的径向移动，并抵压所述前壳组件，将所述前壳组件锁定在所述连接筒内。
可选地，所述本体上开有插口，所述光效组件可从所述插口插入到所述光学通道中，使所述光效组件与所述本体可拆卸连接。
可选地，所述光效组件包括投影片组件和/或光阑，所述投影片组件和/或所述光阑均可沿所述插口插入到所述光学通道，以改变光线的光效。
可选地，所述投影筒还包括固定弹片，所述固定弹片设置在所述插口的两端，形成卡位，所述投影片组件和/或所述光阑插入到所述插口，所述固定弹片发生弹性形变，从上下侧挤压所述投影片组件和/或所述光阑，将所述投影片组件和/或所述光阑固定在所述插口内。
可选地，所述本体包括筒体和设置在所述筒体上的导电连接端，所述导电连接端用于与外部的摄影灯电连接，以使所述摄影灯的电流通过所述导电连接端并向所述投影筒供电。
可选地，所述本体的一端设有用于装配所述摄影灯的卡口件，所述导电连接端为金属触点，所述金属触点设置在所述卡口件上。
可选地，所述投影筒还包括供电组件，其设置在所述筒体内部；所述供电组件包括用于向风扇供电的内置电源和与所述内置电源连接的控制电路；所述控制电路与所述导电连接端之间电连接，并检测所述导电连接端处是否有电流输入；当所述控制电路未检测到所述导电连接端处有电流输入时，所述控制电路控制所述内置电源向所述风扇供电，以驱动所述风扇进行工作。
可选地，所述供电组件还包括充电电路，所述充电电路与所述控制电路之间电连接，且所述充电电路将所述内置电源与所述导电连接端相连接；当所述控制电路检测到所述导电连接端处有电流输入时，控制所述充电电路将 所述导电连接端与所述内置电源接通，以使所述摄影灯的电流经所述导电连接端后向所述内置电源充电。
可选地，所述供电组件还包括与所述充电电路连接的充电接口，所述充电接口通过所述充电电路与所述内置电源相连通，所述筒体上设有与所述充电接口相匹配的过孔；所述充电接口经所述过孔而部分外置于所述筒体，以使所述充电接口能够与外部充电设备对接，以对所述内置电源充电。
可选地，所述供电组件还包括与所述控制电路连通的计时器，所述计时器可获取所述内置电源产生电流的时间信号，所述控制电路能够获取所述时间信号并与预设时间参数进行比对，而控制所述内置电源停止向所述风扇供电。
可选地，所述供电组件还包括与所述控制电路连通的温度传感器，所述温度传感器用于获取所述筒体内的温度信号，所述控制电路能够获取所述温度信号并与预设温度参数进行比对，而控制所述内置电源停止向所述风扇供电。
可选地，所述筒体的内侧壁上设有安装位，所述安装位设置在所述筒体的靠近所述进光口的一端，使所述内置电源可通过所述筒体前方的进光口固定安装在所述安装位上。
可选地，所述筒体的内侧壁上设有安装位，所述筒体的侧壁上开设有安装口，所述安装口与所述安装位相对设置；所述内置电源为一次性电池，所述内置电源可通过所述安装口可拆卸安装至所述安装位中；所述筒体上还设有与所述安装口匹配的电池盖，所述电池盖可拆卸连接在所述筒体的安装口上，将所述安装口封闭。
本申请还提供了一种摄影灯光系统，包括：摄影灯；如上所述的投影筒；所述投影筒与所述摄影灯可拆卸连接，并与所述摄影灯的电连通，使所述摄影灯向所述投影筒内的风扇供电。
由上述技术方案可知，本申请的有益效果为：
本申请提供一种投影筒及摄影灯光系统，其本体上设有进光口和出光口，进光口可与外部的光源相接，进光口和出光口之间设有光学通道，光学通道设置于本体的内部空腔中；光效组件设置在光学通道中，光源发出的光线从进光口进入，通过光效组件后，从出光口射出，以产生各种光效。本申请通过在本体的侧壁设置有进风口和出风口，使进风口与出风口之间形成风道，风道与光学通道相交。并在本体的内部空腔中设置风扇，当风扇工作时，产生的气流从进风口进入，经过风道后从出风口流出，将本体内部空腔的热量带出到外部空气，防止热量在外壳上的聚集，可以有效的降低外壳的温度，并防止外壳的温度过高对人造成伤害或引燃各种室内的易燃物。
附图说明
附图说明
图1是实施例一中的投影筒的立体结构示意图；
图2是图1中投影筒的正视结构示意图；
图3是图1中投影筒的剖视机构示意图；
图4是图1中投影筒的滑动连接处的半剖结构示意图；
图5是投影筒的后壳组件、前壳组件和光效组件分开状态结构示意图；
图6是图5中后壳组件的结构示意图；
图7是图5中前壳组件的结构示意图；
图8是图1中投影筒的分解结构示意图；
图9是图8中后壳组件和其内部装置的分解结构放大示意图；
图10是图8中前壳组件和其内部装置的分解结构放大示意图；
图11为实施例二中投影筒一个角度的立体结构示意图；
图12为图11中投影筒的另一个角度的立体结构示意图；
图13为图11中投影筒的分解结构示意图；
图14为图13中投影筒的壳体的部分立体结构示意图；
图15为图13中投影筒的控制电路的立体结构示意图；
图16为图11中投影筒的剖面俯视结构示意图；
图17为实施例三中投影筒分解结构示意图；
图18为图17中投影筒的壳体的部分立体结构示意图；
图19为图17中投影筒的控制电路的立体结构示意图；
图20为图17中投影筒的侧视结构示意图；
图21为实施二和实施例三中的投影筒内的电路框图。
附图标记说明如下：
100、投影筒；10、本体；101、进光口；102、出光口；103、光学通道；
104、风道；11、后壳组件；111、连接筒；112、壳体；1121、上壳体；1122、下壳体；1120、出风口；1123、第一出风口；1124、第二出风口；1130、进风口；1125、第一进风口；1126、第二进风口；1127、插口；113、固定弹片；114、卡盘；115、接触检测装置；116、卡口件；117、挡光主体；118、主体固定片；119、固定旋钮；1101、调焦旋钮；1102、调焦齿轮；1103、固定座；12、前壳组件；121、镜片挡片；122、前主体；1220、齿条；123、前壳；124、前盖；1241、活动卡扣；12411、紧固旋钮；12412、弹簧；12413、卡簧；1242、固定卡扣；21、光效组件；211、光阑；212、投影片组件；22、光学镜片组；221、收光镜片组件；222、切光镜片组件；223、出光镜片组件；30、风扇；31、第一风扇；32、第二风扇；40、支架组件；41、U型座；50、筒体；51、金属触点；52、安装位；53、安装口；54、电池盖；55、底座；60、供电组件；61、内置电源；62、控制电路板；621、充电接口；622、限位板；623、控制电路；624、充电电路；625、计时器；626、温度传感器。
具体实施方式
体现本发明特征与优点的典型实施方式将在以下的说明中详细叙述。应理解的是本发明能够在不同的实施方式上具有各种的变化，其皆不脱离本发明的范围，且其中的说明及图示在本质上是当作说明之用，而非用以限制本发明。
在本申请的描述中，需要理解的是，在附图所示的实施例中，方向或位置关系的指示(诸如上、下、左、右、前和后等)仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作。当这些元件处于附图所示的位置时，这些说明是合适的。如果这些元件的位置的说明发生改变时，则这些方向的指示也相应地改变。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个所述特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
实施例一
请参阅图1至图10，本申请提供了一种投影筒100，包括本体10、光效组件21、光学镜片组22和风扇30。光效组件21和光学镜片组22设置在本体10内，对投影灯射出的光线进行调整，以达到需要的光效。风扇30设置在本体10上，用于将本体10内部的热量带出，以降低投影筒100内部温度。
请参阅图3，本体10两侧上设有进光口101和出光口102，进光口101可与外部的摄影灯相接，进光口101和出光口102之间设有光学通道103，光学通道103设置于本体10的内部空腔中，使摄影灯发出的光线可从光学通道103的一端的进光口101进入，并从另一端出光口102射出。并且本体10的侧壁设置有进风口1130和出风口1120，进风口1130与出风口1120之间形成风道104，风道104与光学通道103相交。
本实施例中，本体10包括前壳组件12和后壳组件11。前壳组件12和后壳组件11滑动连接，使前壳组件12可在后壳组件11前端伸缩。本实施例中的前壳组件12内的光学通道103内设有出光镜片组件223，当前壳组件12在后壳组件11内伸缩，使出光镜片组件223的水平位置发生改变，其与后壳组件11内的收光镜片组件221相对位置发现变化，进而改变投影筒100的焦 距，可以使投影筒100投射的光效距离发生变化，以适应不同的应用环境。
请参阅图4和图9，提供了一种前壳组件12与后壳组件11的具体滑动连接方式。后壳组件11包括连接筒111、调焦齿轮1102和调焦旋钮1101，前壳组件12整体穿设在连接筒111内，可在相对连接筒111滑动。调焦齿轮1102设置在连接筒111内侧，调焦旋钮1101设置在连接筒111外侧的固定座1103上，并与调焦齿轮1102固定连接。前壳组件12的前主体122上设置有齿条1220；该齿条1220沿前壳组件12轴向布置，当前壳组件12插入到后壳组件11的连接筒111内时，齿条1220与调焦齿轮1102啮合。当转动调焦旋钮1101，使调焦齿轮1102转动，调焦齿轮1102驱动齿条1220移动，使前壳组件12在连接筒111内沿其轴线移动。
请参阅图1和图9，后壳组件11还包括固定旋钮119，固定旋钮119设置在连接筒111底部，固定旋钮119穿过垫片后与连接筒111通过连接。且固定旋钮119可沿连接筒111的径向移动，当固定旋钮119旋转朝向连接筒111的轴线靠近时，抵压前壳组件12，将前壳组件12锁定在连接筒111内；当固定旋钮119反向旋转，并远离连接筒111的轴线时，前壳组件12解开锁定，可沿轴线自由移动。
请参阅图3，本实施例中的光效组件21包括光阑211和投影片组件212。光学镜片组22包括收光镜片组件221、切光镜片组件222和出光镜片组件223。收光镜片组件221、切光镜片组件222、光阑211、投影片组件212和出光镜片组件223沿光路依次设置。并且收光镜片组件221、切光镜片组件222、光阑211和投影片组件212均设置在后壳组件11的光学通道103内，出光镜片组件223设置在前壳组件12的光学通道103内。切光镜片组件222将后壳组件11上的内部腔体分隔开，使收光镜片组件221设置在切光镜片组件222前侧，光阑211和投影片组件212设置在切光镜片组件222的后侧。
本实施例中的风扇30设置在后壳组件11的内部空腔内，并设置于在光学通道103外周侧，使光学通道103不受遮挡。后壳组件11的侧壁开有相对 设置的进风口1130和出风口1120，进风口1130出风口1120形成风道104，风道104与光学通道103相交。风扇30工作产生气流，使气流从进风口1130进入，从出风口1120流出，将后壳组件11的内部空腔内的热量带出。风扇30将投影筒100中的内部热量带出，可以有效的降低外壳的温度，防止外壳的温度过高对人造成伤害，或引燃各种室内的易燃物。
本实施例中的收光镜片组件221位于光学通道103的最前端，接收最多的光线，发热量最大，是投影筒100内的最大发热源。
因此，在一些实施例中，风扇30仅包括第一风扇31，第一风扇31设置在收光镜片组件221的侧边，本体10上设有与第一风扇31对应的第一进风口1125和第一出风口1123。气流从第一进风口1125进入，经过收光镜片组件221后，从第一出风口1123流出，以将收光镜片组件221上的热量带出。只在收光镜片组件221侧边设置第一风扇31，可以将投影筒100内的大部分热量带出，能实现降低投影筒100整体温度的效果。
可以理解的，第一风扇31数量可以设置为多个。例如在第一进风口1125和第一出风口1123均设置第一风扇31，以加强对收光镜片组件221的散热效果，使收光镜片组件221的散热更加迅速。
在一些实施例中，风扇30包括第一风扇31和第二风扇32，分别设置在切光镜片组件222的前后两侧边。请具体参阅图3，第一风扇31如上所述，仍然设置在收光镜片组件221的周侧边，用于将收光镜片组件221的热量带出。第二风扇32设置在投影片组件212的侧边，且本体10上设有与第二风扇32对应的第二进风口1126和第二出风口1124；气流从第二进风口1126进入，经过投影片组件212后，从第二出风口1124流出，以将投影片组件212上的热量带出。
当光线通过收光镜片组件221将摄影灯射出的光线聚拢，然后通过切光镜片组件222对通过光线的形状进行改变，再通过光阑211对光线孔径进行限制，最后照射到投影片组件212上。此时光线强度已经大幅减弱，但仍然 会对投影片组件212产生部分热量，并且投影片组件212一般为金属薄片，低热量仍然会导致投影片组件212发热导致形变。而通过设置在投影片组件212侧边的第二风扇32，可以对投影片组件212进行有效散热，防止投影片组件212的发热变形。
可以想到的是，在其他一些实施例中，可以单独设装置一个风扇30，来对投影片组件212散热，来解决投影片组件212容易变形的技术问题。
本实施例中，第一风扇31和第二风扇32均设置在收光镜片组件221和投影片组件212的底部，气流从后壳组件11的底部进入，上部流出，来对收光镜片组件221和投影片组件212进行散热。
可以理解的是，第一风扇31和第二风扇32还可以是任何产生气体流动的装置，如气泵和整流器等装置。第一风扇31、第二风扇32、进风口和出风口的相对位置也可以发生对应变化，只要能实现气流经过收光镜片组件221和投影片组件212上，将其温度降低即可。
请参阅图5，本实施例中的投影片组件212和光阑211与壳体112可拆卸连接，可以实现对投影片组件212和光阑211随时更换。
具体的，后壳组件11的壳体112上开有插口1127，投影片组件212可以从插口1127插入到光学通道103中。光阑211也可沿插口1127插入到光学通道103，并位于投影片组件212和切光镜片组件222之间。插口1127的设置，可以实现对投影片组件212和光阑211随时更换。
可以根据投影筒100的使用环境，选择将投影片组件212和光阑211一同插入或择一插入。
请参阅图8和图9，后壳组件11还包括固定弹片113，用于对插入的投影片组件212和/或光阑211进行固定。
具体的，固定弹片113具有四个，均设置在插口1127的两侧边，形成一个卡合位。每个固定弹片113均设置由两个可以上下发生弹性形变的弹片，当投影片组件212和光阑211插入到插口1127后，固定弹片113的弹片从上 下两侧挤压投影片组件212和光阑211，以将投影片组件212和光阑211固定在插口1127内。当需要将投影片组件212和光阑211跟换时，只需捏住其上的手柄用力向上提起，即可使固定弹片113发生弹性形变，进而将投影片组件212和光阑211拔出。固定弹片113的弹片是从上下两侧对其进行限位，单独将投影片组件212或光阑211插入仍能实现其的固定。
请参阅图1和图8，投影筒100还包括支架组件40，用于支撑投影筒100的本体10。本体10的后壳组件11的两侧固定有U型座41，支架组件40与U型座41连接，实现支架组件40与后壳组件11的转动连接。
请参阅图8和图9，本实施例中的后壳组件11包括壳体112，壳体112又包括上壳体1121和下壳体1122，上壳体1121和下壳体1122通过螺栓连接。将壳体112分为两部分，可以方便对内部装置的安装和更换。并且，本实施例中的下壳体1122上设置进风口，上壳体1121上设置出风口，下壳体1122上设有用于安装风扇30的安装部；并设置于进风口处。
请参阅图8和图9，后壳组件11还包括卡盘114、接触检测装置115和卡口件116。壳体112进光的一端通过螺栓连接依次连接有卡口件116和卡盘114。卡盘114可以用于与投影灯进行连接固定，将投影灯固定在投影筒100的进光口101一侧。卡盘114面向卡口件116一侧还设置有接触检测装置115，用于卡盘114与投影灯连接时的固定检测。
请参阅图8和图9，后壳组件11还包括挡光主体117和主体固定片118，挡光主体117设置在壳体112背离卡盘114的一侧端部，使通过投影片组件212后的光线能穿过挡光主体117，防止漏光。主体固定片118也设置在壳体112背离卡盘114端部的卡槽内，并通过螺栓与连接筒111连接，实现壳体112与连接筒111的固定连接。
请参阅图8和图10，前壳组件12包括镜片挡片121、前主体122、前壳123和前盖124。镜片挡片121设置在前主体122内，以将出光镜片组件223固定在前主体122的内部。前壳123和前盖124依次与前主体122的另一端 连接。本实施例中的前主体122上设有两条平行的凸肋，用于与齿条1220连接。
本实施例中的前盖124的端面设有三个固定卡扣1242和一个活动卡扣1241，形成了一个卡槽面。紧固旋钮12411依次穿过弹簧12412、活动卡扣1241、卡簧12413与前盖124连接，实现活动卡扣1241与前盖124的可拆卸连接。通过对活动卡扣1241的拆卸，可以对前盖124的卡槽面的附件进行更换紧固。
本实施例通过在本体10的内部空腔底部设置风扇30，并在本体10的侧壁开设相对设置的进风口和出风口，进风口与出风口形成风道104，风道104与光学通道103相交；当风扇30工作时，气流从进风口进入，从出风口流出，将投影筒100内部空腔的热量带出到外部空气。风扇30将投影筒100中的内部热量带出，可以有效的降低外壳的温度，防止了外壳的温度过高对人造成伤害，或引燃各种室内的易燃物。
实施例二
针对现有的投影筒100内的风扇30的供电均由外部的摄影灯所提供，当摄影灯关机后，其电源输出将停止，导致投影筒100内的风扇30也将停止工作。而此时，投影筒100内还聚集着大量的余热无法迅速排出，故收光镜组中的镜片仍有因受热而破裂的危险；其极大地降低了镜片的使用寿命，频繁地更换镜片也将极大地提高了投影筒的使用成本，且更换镜片工作繁琐，极大地影响了用户的使用体验的问题。
本实施例提供了一种摄影灯光系统，包括摄影灯和投影筒100。摄影灯上设有触点，该触点与摄影灯内的电源连接。投影筒100上也对应设有金属触点51。当投影筒100上与摄影灯可拆卸连接时，投影筒100上的金属触点51与摄影灯上的触点相配合，使摄影灯能够对投影筒100供电。
请参阅图11至图16，本实施例提供了一种投影筒100，包括本体10、风扇30和供电组件60。风扇30设置在本体10内，用于对投影筒100进行 散热。供电组件60也设置在本体10内，当与投影筒100对接的摄影灯关闭后，投影筒100内的供电组件60仍能驱动风扇30进行工作，对投影筒100进行散热。
在正常工作时，摄影灯为风扇30提供工作电压，风扇30对投影筒100进行散热。但摄影灯关闭后，其将停止对投影筒100输出电压，此时投影筒100内部的供电组件60将启动，并对风扇30提供工作电压，使得风扇30在摄影灯在关机后依然能持续工作一段时间，使其能将投影筒100内的余热顺利排出。
请参阅图11，投影筒100的本体10包括筒体50和设置在筒体50上的导电连接端。该导电连接端可与摄影灯上的触点抵接而实现电连接，使摄影灯的上的电流能通过该导电连接端向投影筒100供电。
本实施例的本体10的一端设有用于装配摄影灯的卡口件116，导电连接端设置在卡口件116上。本实施例中的导电连接端为金属触点51，其设置在卡口件116与摄影灯相对接的端面上。
在其他一些实施例中，筒体50上的导电连接端可以为插孔、插座等导电结构；对应的，摄影灯上的端面上也对应设有与其相互匹配的插头等导电结构。
本实施例的筒体50包括由前壳组件12和后壳组件11相互拼接形成。筒体50的一端设有进光口101，筒体50的另一端面上设有出光口102。且筒体50的内部中空形成容置通道，用于容置光效器件、风扇30和供电组件60等装置。摄影灯射出的光线可以依次通过进光口101、光效器件和出光口102射出。
如图11和图13所示，本实施例的卡口件116设施在壳体112的进光口101一端，用于与摄影灯相对接。卡口件116上设有通孔，该通孔与壳体112上进光口101相对设置，使光线能顺利通过卡口件116。
本实施例中的金属触点51设置在卡口件116背离壳体112的端面上。需 要理解的是，在其他一些实施例中，投影筒100中未设有卡口件116，此时，金属触点51设置在与摄影灯相对接的筒体50的端面上。
请参阅图13，本实施例中光效器件包括收光镜片组件221和光效组件21。光效组件21可包括光阑211、投影片组件212等可以改变光效的部件。光效组件21可通过壳体112上的插口1127插入到壳体112内的容置通道中，使摄影灯具射出的光线能通过容置通道内的光效组件21并产生各种灯光效果。
在本实施例中，筒体50上还设有两个对称的底座55，用于与支架组件40连接，使支架组件40可以快速的连接在筒体50的底座55上。
请参阅图14，筒体50的内侧壁上设有安装位52，安装位52设置在筒体50的进光口101一端，使内置电源61可通过筒体50上的前方的进光口101固定安装在安装位52上，控制电路板62可拆卸连接在安装位52上方。
具体而言，本实施例中的供电组件60设在下壳体1122的内侧壁上，靠近筒体50的进光口101一端，并位于风扇30的侧边。使供电组件60可以通过进光口101安装到下壳体1122上。基于本实施例，也可以先将供电组件60安装到下壳体1122的内侧壁上，然后将下壳体1122与上壳体1121对接组装形成容置腔。供电组件60设置在风扇30的一侧，可以通过流动的气流对供电组件60也进行散热，以防止供电组件60的温度过高而损坏。
需要理解的是，壳体112也可以采用一体式结构，供电组件60在筒体50内的位置也可以进行适应性的调整，只要不影响光线的通过和其他光效器件的安装。
请参阅图13、图15和图21，本实施的筒体50内设有单独的内置电源61对风扇30进行供电，即使卡口件116上的金属触点51与摄影灯断开，也能继续驱动风扇30进行工作。
如图13和图21所示，供电组件60包括用于向风扇30供电的内置电源61和与内置电源61电连接的控制电路623。控制电路623与金属触点51电连接，并检测金属触点51处的电流是否输入的信号。当控制电路623接收金 属触点51处的电流未输入的信号时，控制电路623控制内置电源61向风扇30供电，使风扇30开启对筒体50散热。
本实施例中筒体50内部的内置电源61可以是充电电池、储能电容、一次性电池等。
本实施例中的控制电路623集成在控制电路板62(PCB板)上，且控制电路623分别与筒体50上金属触点51、内置电源61和风扇30电连接。以控制电路623作为控制中心，当摄影灯与投影筒100断开连接或摄影灯关闭时，筒体50上金属触点51的工作电流断开。此时，控制电路623将控制内置电源61向风扇30进行供电，使风扇30能继续工作，继续对投影筒100上的光学镜片组22的收光镜片组件221和光效组件21进行降温，可以有效的防止的收光镜片组件221和光效组件21上的镜片因受热而破裂。
在其他一些实施例中，如图21所示，供电组件60还包括充电电路624，充电电路624与控制电路623电连接。内置电源61与金属触点51通过充电电路624电连接。当控制电路623接收金属触点51处的电流输入的信号时，控制电路623控制充电电路624将金属触点51与内置电源61接通，并能够对摄影灯的电流进行分流，使部分电流经金属触点51后向内置电源61充电。
示例的，充电电路624也集成在控制电路板62上，且充电电路624将金属触点51和内置电源61电连接。当控制电路623接收到金属触点51处的电流输入的信号时，控制电路623控制充电电路624将金属触点51与内置电源61接通，以使摄影灯的部分电流向内置电源61充电。
将控制电路623和充电电路624集成在一块控制电路板62上，并且将金属触点51与内置电源61通过充电电路624连接。当摄影灯上的电流驱动风扇30工作时，控制电路623控制摄影灯的部分电流流经充电电路624后进入到内置电源61中，以对内置电源61进行充电，使内置电源61能随时保持电量。这样，就无须人为对内置电源61进行充电，其操作更加的方便。
在其他一些实施例中，请参阅图13、图15和图21，供电组件60还包括 充电接口621，充电接口621通过充电电路624与内置电源61电连接，且充电接口621可与外部充电设备对接，以对内置电源61充电。
示例的，充电接口621设置在控制电路板62上，并通过的充电电路624与内置电源61电连接。充电接口621可与外部充电设备对接，外部充电设备可以直接对内置电源61充电。本实施例中的充电接口621为DC充电接口621，其可以快速的对内置电源61进行充电，以将内置电源61迅速的充满，节省了充电时间。
可以想到的是，充电接口621也可以直接与内置电源61电连接，来对内置电源61进行充电。即直接在外部的充电设备上设置充电电路624。
进一步的，请参阅图12和图16，筒体50上设有与充电接口621相匹配的过孔，充电接口621经过该过孔而部分外置于筒体50，使充电接口621能够与外部电充设备对接。
具体而言，充电接口621设置在控制电路623板的侧面，并横向向外凸起。在筒体50的壳体112上开设有一个对应的过孔，该过孔设置在壳体112的底部。并且，在设有过孔的壳体112的外侧面上还设有一个凹槽，方便操作人员寻找到该充电接口621，来迅速与外部充电器对接。
如图21所示，在一些实施例中，供电组件60还包括计时器625，使控制电路623能在预设时间内切断内置电源61对风扇30的工作电流。
具体的，供电组件60包括与控制电路623电连接的计时器625，计时器625可以获取内置电源61产生电流的时间信号，控制电路623能够将获取的时间信号与预设时间参数进行比对，而控制内置电源61停止向风扇30供电。
示例的，在计时器625也集成在控制电路板62上，并与控制电路623电连接。在控制电路623上设定一个预定时间参数，例如两分钟。当摄影灯关闭，金属触片上的电流停止输入时，控制电路623将控制内置电源61继续对风扇30进行供电，使风扇30能继续工作。此时，计时器625开始计算内置电源61供电的时间，当内置电源61供电时间到达到预设时间两分钟时， 控制电路623将切断内置电源61对风扇30的供电，使风扇30停止工作。
如图21所使，在一些实施例中，供电组件60还包括温度传感器626，使控制电路623能在预设温度下切断内置电源61到风扇30的工作电流。
具体的，供电组件60包括与控制电路623电连接的温度传感器626，温度传感器626用于获取筒体50内的温度信号。控制电路623能够获取该温度信号并与预设温度参数进行比对，而控制内置电源61停止向风扇30供电。
示例的，温度传感器626也集成在控制电路板62上。在控制电路623设定一个预设温度参数，例如30℃。当摄影灯关闭，金属触片的电流停止输入时，控制电路623将控制内置电源61继续对风扇30进行供电，使风扇30能继续工作。此时，温度传感器626检测筒体50内的温度，并将测得的温度信号传递至控制电路623中与预设温度参数进行对比，当筒体50内温度低于预设温度参数30℃时，控制电路623将切断内置电源61对风扇30的供电，使风扇30停止工作。
综上，本实施例通过在筒体50的内侧壁上设置单独的内置电源61和控制电路623，并使控制电路623分别与内置电源61和筒体50上的金属触点51电连接。当控制电路623检测到金属触点51上电流停止输入，控制电路623驱动内置电源61为风扇30供电，以驱动风扇30工作。即使与投影筒100相连的外部摄影灯停止供电后，设置在投影筒100内部的内置电源61仍然能对风扇30进行供电。使得投影筒100内部的余热能通过风扇30及时地排出到外界中，有效地防止光效器件中的镜片因高温而导致发生爆裂，其极大地提高了镜片的使用寿命，降低了投影筒100的使用成本，进而为用户提供更好的使用体验。
实施例三
请参阅图17至图20，本实施例与实施例二区别在于：提供了另一种供电组件60的安装方式。通过在筒体50的侧壁上开设安装口53，来使内置电源61可拆卸连接在安装位52上，可以在不拆卸投影筒100的光效器件的情 况下，对供电电池进行拆卸更换。
具体的，筒体50的侧壁上开设有安装口53，安装口53与筒体50上的安装位52相对设。且内置电源61可通过安装口53安装到安装位52中，也可通过该安装口53将内置电源61拆卸下来，不需要拆卸投影筒100的光效附件。
请参阅图19，本实施例的控制电路板62的两端设有限位板622，该限位板622位于安装位52的两端，当内置电源61通过安装口53进入到安装位52时，内置电源61的两端与限位板622相抵接，使内置电源61与控制电路板62上的控制电路623电连接。并且限位板622还可以对内置电源61进行限位，以防止内置电源61在安装位52中移动。
进一步的，如图20所示，投影筒100还包括与安装口53匹配的电池盖54，电池盖54可拆卸连接在筒体50的安装口53上，将安装口53封闭。通过可拆卸的电池盖54来将安装口53封闭，可以防止内置电源61从安装口53中掉出，并且增加了筒体50的美观性。
本实施例通过在筒体50上设有安装口53和电池盖54，来使内置电源61可以方便快捷的拆卸下来，便于了内置电源61的更换。即使内置电源61为更换频率较高的一次性电池，也不会影响摄影筒的使用效率，进一步提高了用户使用体验。
虽然已参照几个典型实施方式描述了本发明，但应当理解，所用的术语是说明和示例性、而非限制性的术语。由于本发明能够以多种形式具体实施而不脱离发明的精神或实质，所以应当理解，上述实施方式不限于任何前述的细节，而应在随附权利要求所限定的精神和范围内广泛地解释，因此落入权利要求或其等效范围内的全部变化和改型都应为随附权利要求所涵盖。

Claims (20)

  1. 一种投影筒，其特征在于，包括：
    本体，其上设有进光口和出光口，所述进光口可与外部的光源相接，所述进光口和所述出光口之间设有光学通道，所述光学通道设置于所述本体的内部空腔中；所述本体的侧壁设置有进风口和出风口，所述进风口与所述出风口之间形成风道，所述风道与所述光学通道相交；
    光效组件，设置在所述光学通道中，所述光源发出的光线从所述进光口进入，通过所述光效组件后，从所述出光口射出，以产生各种光效；
    风扇，设置在所述内部空腔内，所述风扇产生气流，所述气流从所述进风口进入，从所述出风口流出，将所述内部空腔内的热量带出。
  2. 根据权利要求1所述的投影筒，其特征在于，所述投影筒还包括光学镜片组，所述光学镜片组设置在所述光学通道内；所述风扇设置在所述光学镜片组和/或所述光效组件侧边，以将所述光学镜片组和/或所述光效组件上的热量带出。
  3. 根据权利要求2所述的投影筒，其特征在于，所述光学镜片组包括收光镜片组件，所述收光镜片组件位于所述光学通道的前端；所述风扇包括第一风扇，所述第一风扇设置在所述收光镜片组件的侧边，所述本体上设有与所述第一风扇对应的第一进风口和第一出风口；气流从所述第一进风口进入，从所述第一出风口流出，以将所述收光镜片组件上的热量带出。
  4. 根据权利要求3所述的投影筒，其特征在于，所述光学镜片组还包括切光镜片组件，所述光效组件包括投影片组件；所述收光镜片组件、所述切光镜片组件和所述投影片组件沿光路依次设置；所述切光镜片组件将所述内部空腔分隔开，使所述收光镜片组件位于所述切光镜片组件前侧，所述投影片组件位于所述切光镜片组件的后侧；
    所述风扇还包括第二风扇，所述第二风扇设置在所述投影片组件的侧边，所述本体上设有与所述第二风扇对应的第二进风口和第二出风口；气流从所 述第二进风口进入，并从所述第二出风口流出，以将所述投影片组件上的热量带出。
  5. 根据权利要求2所述的投影筒，其特征在于，所述本体包括前壳组件和后壳组件，所述光学镜片组包括收光镜片组件和出光镜片组件；所述收光镜片组件设置在所述后壳组件内，所述出光镜片组件设置在所述前壳组件内；
    所述前壳组件和所述后壳组件滑动连接，所述前壳组件可在所述后壳组件内伸缩，使所述收光镜片组件与所述出光镜片组件的距离发生变化，进而改变所述投影筒的焦距。
  6. 根据权利要求5所述的投影筒，其特征在于，所述前壳组件的外壁上设有齿条；所述后壳组件包括连接筒、调焦齿轮和调焦旋钮，所述前壳组件穿设在所述连接筒内，所述调焦齿轮设置在所述连接筒内侧，并与所述齿条啮合，所述调焦旋钮与所述调焦齿轮连接；通过转动所述调焦旋钮，使所述调焦齿轮转动，驱动所述齿条移动，使所述前壳组件沿所述连接筒的轴线方向移动。
  7. 根据权利要求6所述的投影筒，其特征在于，所述后壳组件还包括固定旋钮，所述固定旋钮设置在所述连接筒上，所述固定旋钮可沿所述连接筒的径向移动，并抵压所述前壳组件，将所述前壳组件锁定在所述连接筒内。
  8. 根据权利要求1所述的投影筒，其特征在于，所述本体上开有插口，所述光效组件可从所述插口插入到所述光学通道中，使所述光效组件与所述本体可拆卸连接。
  9. 根据权利要求8所述的投影筒，其特征在于，所述光效组件包括投影片组件和/或光阑，所述投影片组件和/或所述光阑均可沿所述插口插入到所述光学通道，以改变光线的光效。
  10. 根据权利要求9所述的投影筒，其特征在于，所述投影筒还包括固定弹片，所述固定弹片设置在所述插口的两端，形成卡位，所述投影片组件和/或所述光阑插入到所述插口，所述固定弹片发生弹性形变，从上下侧挤压 所述投影片组件和/或所述光阑，将所述投影片组件和/或所述光阑固定在所述插口内。
  11. 根据权利要求1所述的投影筒，其特征在于，所述本体包括筒体和设置在所述筒体上的导电连接端，所述导电连接端用于与外部的摄影灯电连接，以使所述摄影灯的电流通过所述导电连接端并向所述投影筒供电。
  12. 根据权利要求11所述的投影筒，其特征在于，所述本体的一端设有用于装配所述摄影灯的卡口件，所述导电连接端为金属触点，所述金属触点设置在所述卡口件上。
  13. 根据权利要求11所述的投影筒，其特征在于，所述投影筒还包括供电组件，其设置在所述筒体内部；所述供电组件包括用于向风扇供电的内置电源和与所述内置电源连接的控制电路；所述控制电路与所述导电连接端之间电连接，并检测所述导电连接端处是否有电流输入；当所述控制电路未检测到所述导电连接端处有电流输入时，所述控制电路控制所述内置电源向所述风扇供电，以驱动所述风扇进行工作。
  14. 根据权利要求13所述的投影筒，其特征在于，所述供电组件还包括充电电路，所述充电电路与所述控制电路之间电连接，且所述充电电路将所述内置电源与所述导电连接端相连接；当所述控制电路检测到所述导电连接端处有电流输入时，控制所述充电电路将所述导电连接端与所述内置电源接通，以使所述摄影灯的电流经所述导电连接端后向所述内置电源充电。
  15. 根据权利要求14所述的投影筒，其特征在于，所述供电组件还包括与所述充电电路连接的充电接口，所述充电接口通过所述充电电路与所述内置电源相连通，所述筒体上设有与所述充电接口相匹配的过孔；所述充电接口经所述过孔而部分外置于所述筒体，以使所述充电接口能够与外部充电设备对接，以对所述内置电源充电。
  16. 根据权利要求13所述的投影筒，其特征在于，所述供电组件还包括与所述控制电路连通的计时器，所述计时器可获取所述内置电源产生电流的 时间信号，所述控制电路能够获取所述时间信号并与预设时间参数进行比对，而控制所述内置电源停止向所述风扇供电。
  17. 根据权利要求13所述的投影筒，其特征在于，所述供电组件还包括与所述控制电路连通的温度传感器，所述温度传感器用于获取所述筒体内的温度信号，所述控制电路能够获取所述温度信号并与预设温度参数进行比对，而控制所述内置电源停止向所述风扇供电。
  18. 根据权利要求13所述的投影筒，其特征在于，所述筒体的内侧壁上设有安装位，所述安装位设置在所述筒体的靠近所述进光口的一端，使所述内置电源可通过所述筒体前方的进光口固定安装在所述安装位上。
  19. 根据权利要求13所述的投影筒，其特征在于，所述筒体的内侧壁上设有安装位，所述筒体的侧壁上开设有安装口，所述安装口与所述安装位相对设置；所述内置电源为一次性电池，所述内置电源可通过所述安装口可拆卸安装至所述安装位中；所述筒体上还设有与所述安装口匹配的电池盖，所述电池盖可拆卸连接在所述筒体的安装口上，将所述安装口封闭。
  20. 一种摄影灯光系统，其特征在于，包括：
    摄影灯；
    权利要求1-19中任一项所述的投影筒；所述投影筒与所述摄影灯可拆卸连接，并与所述摄影灯的电连通，使所述摄影灯向所述投影筒内的风扇供电。
PCT/CN2023/133375 2022-11-25 2023-11-22 投影筒及摄影灯光系统 WO2024109823A1 (zh)

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CN202321570916.1U CN220290017U (zh) 2023-06-16 2023-06-16 投影筒及摄影灯光系统
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CN209198838U (zh) * 2019-01-28 2019-08-02 东莞市好拍点摄影器材有限公司 一种带彩色镜片的新型调焦温控摄影灯
CN210979724U (zh) * 2019-12-27 2020-07-10 广州市星熠光电设备有限公司 一种新型户外投影灯
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CN215416224U (zh) * 2021-08-13 2022-01-04 东莞市影格格数码科技有限公司 摄影灯
CN217587851U (zh) * 2022-06-23 2022-10-14 深圳市神牛摄影器材有限公司 光效器及闪光灯
CN218917905U (zh) * 2022-11-25 2023-04-25 深圳市神牛摄影器材有限公司 投影筒
CN219475966U (zh) * 2023-01-31 2023-08-04 深圳市神牛摄影器材有限公司 光效器及灯光系统

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CN210979724U (zh) * 2019-12-27 2020-07-10 广州市星熠光电设备有限公司 一种新型户外投影灯
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