JP5298912B2 - Lighting device - Google Patents

Description

  The present invention relates to an illumination device that emits illumination light for photographing.

  For example, when a moving image is shot using a video camera or a digital camera that can record a moving image, there is an illuminating device that is used to continuously illuminate a subject and includes an LED (light emitting diode) as a light source. Here, when the subject is continuously illuminated using the LED, the power is significantly consumed and the LED generates heat. The temperature rise in the device due to the heat generation of the LED deteriorates the performance of the LED. Then, the illuminating device which prevents the temperature rise in the apparatus by the heat_generation | fever from LED by providing a heat radiator in the back surface of the surface in which LED of the board | substrate which mounted LED is mounted is disclosed (for example, Patent Document 1).

JP 2006-331858 A

  However, in the lighting device described in Patent Document 1, a fan or the like is not attached, and active heat dissipation cannot be performed. In addition to the heat generated from the LED, there is a lot of heat generated from the battery for supplying power to the LED and other electronic components. This not only causes battery leakage and explosion, but also degrades the performance of the device body. . However, in the illuminating device described in Patent Document 1, the battery cannot be positively cooled.

  The objective of this invention is providing the illuminating device which can perform reliably and efficiently the radiation | emission of the battery which supplies electric power to a light source and a light source only by distribute | circulating air to one flow path.

  The present invention solves the above problems by the following means.

An illumination device according to the present invention is an illumination device that emits illumination light for photographing, and includes a substrate on which an electronic component including a light source that emits the illumination light is mounted, and a battery that supplies power to the electronic component. A housing including a battery housing chamber for housing, a first housing portion for housing the battery housing chamber, a second housing portion adjacent to the first housing portion and housing the substrate, and the first housing A first ventilation hole that is provided in a part of the unit and serves as a ventilation hole for venting from the outside of the housing to the battery housing chamber in the first housing portion or from the battery housing chamber to the outside of the housing; Air is provided near the boundary between the first housing portion and the second housing portion, and allows air to flow into the first housing portion from within the second housing portion, or air into the second housing portion from within the first housing portion. A second ventilation hole through which the air flows and a part of the second housing portion, Controlling a third vent a vent for venting from the vent or the second housing portion from the outer to the second housing portion to該筐outside, a fan for circulating air, the driving of the fan Switch for switching the rotation direction of the fan, a temperature detection unit for the light source that detects the temperature of the light source or the vicinity of the light source, a temperature detection unit for the battery that detects the temperature of the battery or the vicinity of the battery, and the control unit And the control unit controls driving of the fan in accordance with an emission operation of the illumination light from the light source, and controls driving of the fan based on a detection result of the light source temperature detection unit. Then, based on the detection results of the light source temperature detection unit and the battery temperature detection unit, the switching of the rotation direction of the fan by the switching unit is controlled, and the air is driven by driving the fan. 1st ventilation After flowing into the first housing part and flowing through the battery housing part, and subsequently flowing from the second ventilation hole into the second housing part and circulating around the substrate in the second housing part, Finally, it is configured to flow along a flow path that flows out of the housing through the third vent hole, or a flow path that is the opposite of the flow path.
Moreover, the illumination device of the present invention is an illumination device that emits illumination light for photographing, the electronic component being mounted thereon, a substrate having a heat dissipation member on the back surface of the surface on which the electrical component is mounted, and the electronic device A battery storage chamber that stores a battery that supplies power to the component, a first storage portion that stores the battery storage chamber, and a second storage portion that is adjacent to the first storage portion and stores the substrate. A housing and a vent hole provided in a part of the first housing portion, for venting the outside of the housing into the battery housing chamber in the first housing portion or venting from the battery housing chamber to the outside of the housing. The first vent hole is provided near the boundary between the first housing portion and the second housing portion, and allows air to flow from the second housing portion into the first housing portion, or within the first housing portion. A second vent hole for allowing air to flow into the second housing portion from the second housing portion, and the second housing A third vent hole provided in a part of the housing and serving as a vent hole for venting the outside of the housing into the second housing portion or venting from the inside of the second housing portion to the outside of the housing, and a fan for circulating air And driving the fan to allow the air to flow from the first air hole into the first housing part and flow through the battery housing part, and then from the second air hole to the second air hole. 2 A flow path that flows into the housing portion, flows around the substrate in the second housing portion, flows through the space including the heat radiating member, and finally flows out of the housing through the third vent hole. Or is configured to flow along a flow path opposite to that.
The illumination device of the present invention is an illumination device that emits illumination light for photographing, and includes a substrate on which an electronic component is mounted, a battery storage chamber that stores a battery that supplies power to the electronic component, A first housing portion that houses the battery housing chamber and includes a battery lid that is capable of opening and closing an opening for loading the battery provided in the battery housing chamber; and the substrate adjacent to the first housing portion and the substrate A housing having a second housing portion for housing the battery, and the battery lid, venting from the outside of the housing to the battery housing chamber in the first housing portion or from the battery housing chamber to the outside of the housing. A first ventilation hole serving as a ventilation hole for ventilation, and provided in the vicinity of a boundary between the first accommodation part and the second accommodation part, and allows air to flow into the first accommodation part from within the second accommodation part; Or a second passage that allows air to flow into the second housing portion from the first housing portion. A third hole provided in a part of the second housing portion and serving as a vent hole for venting the outside of the housing into the second housing portion or venting from the inside of the second housing portion to the outside of the housing; And a fan for circulating air, and driving the fan so that the air flows from the first ventilation hole into the first housing part and then flows through the battery housing part. A flow path that flows from the second ventilation hole into the second housing part and flows around the substrate in the second housing part, and finally flows out of the housing through the third ventilation hole, or It is characterized in that it is configured to flow along a flow path opposite to that.
Further, the illumination device of the present invention is an illumination device that emits illumination light for photographing, and houses a substrate on which an electronic component is mounted and a battery that supplies power to the electronic component, A battery storage chamber provided with a space for circulating air around the battery held inside, a first storage portion for storing the battery storage chamber, and adjacent to the first storage portion And a housing provided with a second housing portion for housing the substrate, and a vent from the outside of the housing to the battery housing chamber in the first housing portion or the A first vent hole serving as a vent hole for venting the outside of the housing from the battery housing chamber, and a boundary between the first housing portion and the second housing portion; Air is allowed to flow into the first accommodating portion, or the second accommodating portion from within the first accommodating portion. A second ventilation hole for allowing air to flow in, and a part of the second housing part, for venting from the outside of the housing into the second housing part or from the inside of the second housing part to the outside of the housing. A third vent hole serving as a vent hole and a fan for circulating air, and driving the fan causes the air to flow into the first housing portion from the first vent hole. After flowing through the storage portion, the flow continues from the second ventilation hole into the second storage portion to flow around the substrate in the second storage portion, and finally through the third ventilation hole. It is configured to flow along a flow path that flows out of the housing or a flow path that is opposite to the flow path.

  According to the illuminating device of the present invention, it is possible to reliably and efficiently dissipate heat from a light source and a battery that supplies power to the light source simply by circulating air through one channel.

It is a figure which shows the external appearance of the illuminating device which concerns on 1st Embodiment. It is a figure for demonstrating the components which comprise the illuminating device which concerns on 1st Embodiment. It is a figure for demonstrating the state in which the battery cover is open. It is a figure which shows the structure of another 1st ventilation hole. It is a figure for demonstrating the space for distribute | circulating other air. It is a figure which shows the structure of a part of illuminating device which concerns on 1st Embodiment. It is a rear view which shows the external appearance of the illuminating device which concerns on 1st Embodiment. It is a figure which shows the structure of a part of illuminating device which concerns on 2nd Embodiment. It is a flowchart for demonstrating the method to control the drive of a fan in the illuminating device which concerns on 2nd Embodiment. It is a figure which shows the one part structure of the illuminating device which concerns on 3rd Embodiment. It is a block diagram which shows the system configuration | structure of the illuminating device which concerns on 3rd Embodiment. It is a flowchart for demonstrating the method to control the drive of a fan in the illuminating device which concerns on 3rd Embodiment.

  Hereinafter, an illumination device according to a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram illustrating an appearance of the lighting device 1, and FIG. 2 is a diagram for explaining components that constitute the lighting device 1. The illuminating device 1 emits illumination light for photographing, and is attached to the upper part of a video camera or a digital camera capable of recording moving images, for example, using the legs 2 shown in FIGS. 1 and 2. Is used to continuously illuminate the subject when taking a moving image.

  As shown in FIG. 1, the lighting device 1 includes a first housing 3 located on the rear side of the lighting device 1 and a second housing 5 located adjacent to the first housing 3 and located on the front side of the lighting device 1. A casing 7 is provided. In addition, a light transmission member 29 is provided on the front surface of the lighting device 1, and the light transmission member 29 is attached to the second housing portion 5. The light transmitting member 29 is configured by a member that transmits light from an LED 19 (see FIG. 2) described later, such as a transparent plastic, glass, or lens. The light emitted from the LED 19 is transmitted through the light transmitting member 29 and emitted to the outside of the housing 7 to illuminate the subject.

  As shown in FIG. 2, the first storage unit 3 stores a battery storage chamber 11 that stores four batteries 9 that supply power to electronic components that require power, such as an LED 19 and a fan 23 described later. Yes. The battery 9 is not limited to four, but may be 1-3, five or more, and may be a secondary battery as well as a primary battery. The first housing 3 is provided with a battery lid 13 provided in the battery housing chamber 11 and capable of opening and closing an opening 11 a for loading the battery 9. FIG. 1 shows a state where the battery cover 13 is closed, and FIG. 3 shows a state where the battery cover 13 is opened.

  As shown in FIG. 1 to FIG. 3, the battery lid 13 has a first vent hole that is a vent hole for venting from the outside of the housing 7 into the battery storage chamber 11, and includes a slit-shaped opening. 15 is provided. The first ventilation hole 15 does not need to be provided in the battery lid 13. For example, as shown in FIG. 4, a first ventilation term 15 ′ is provided in the first housing portion 3 instead of the first ventilation hole 15. You can also.

  In addition, as shown in FIG. 2, a space for circulating air around the periphery of the battery 9 held therein is provided in the battery storage chamber 11. Therefore, the air that has flowed in from the outside of the lighting device 1 (housing 7) through the first vent 15 and the opening 11 a flows through this space in the battery storage chamber 11. The space for circulating air is not limited to the space shown in FIG. 2, as long as the battery 9 is held and the space around the battery 9 can circulate air. Good. For example, as shown in FIG. 5, a space (indicated by a slanted line in the drawing) for circulating air around the battery 9 ′ held by the protruding members 50 provided at predetermined intervals on the inner wall surface of the battery storage chamber 11 ′. It is also possible to provide a battery storage chamber 11 ′ provided with (shown).

  Further, in the vicinity of the boundary between the first housing portion 3 and the second housing portion 5, the surface of the battery housing chamber 11 on the side of the substrate 21, which will be described later, is formed from the inside of the first housing portion 3 (battery housing chamber 11). 2 A vent hole through which air is circulated into the accommodating portion 5, and a second vent hole 17 having a rectangular opening is provided. Since the second ventilation hole 17 is provided in the vicinity of the surface opposite to the surface on which the opening 11 a of the first housing portion 3 is provided, the second ventilation hole 17 flows from the opening 11 a through the first ventilation hole 15. Air flows through the space in the battery storage chamber 11 without any substantial gap and flows out from the second vent hole 17.

  In addition, as shown in FIG. 2, the second housing portion 5 has a high thermal conductivity in which a plurality of LEDs (light emitting diodes) 19 and other electronic components (not shown) as light sources for emitting illumination light are mounted. The board | substrate 21 and the two fans 23 which distribute | circulate air are accommodated. The number of LEDs 19 to be mounted may be one, and is determined in consideration of the light output required by the apparatus main body. The fan 23 is an exhaust fan, and is not limited to two, but may be one or three or more, and is determined in consideration of the installation space, the size of the fan, and the like. Further, instead of the fan 23, an intake fan can be provided in the vicinity of the first ventilation hole 15, and an exhaust fan or an intake fan can be provided in the vicinity of the second ventilation hole 17.

  In addition, the surface on the fan 23 side of the second housing portion 5 is a vent hole for venting from the inside of the second housing portion 5 to the outside of the housing 7, and has a circular third shape composed of a plurality of slits. Two vent holes 25 are provided. The third vent hole 25 is disposed at a position where air exhausted by driving the fan 23 flows out when the substrate 21 and the fan 23 are accommodated in the second accommodating portion 5. Two third vent holes 25 are provided corresponding to the fan 23, but may be one or three or more. Moreover, the 1st ventilation hole 15, the 2nd ventilation hole 17, and the 3rd ventilation hole 25 can also be comprised by openings other than slit shape, a rectangular shape, and circular shape, or mesh shape.

  A plate-like heat radiation member 27 having a large number of fin-like fins is attached to the back surface of the substrate 21 on which the LEDs 19 and the like are mounted. The heat dissipation member 27 has a function of radiating heat emitted from the LED 19 and transmitted to the substrate 21. When the apparatus is assembled, the heat dissipating member 27 is disposed to face the battery storage chamber 11 as shown in FIG. Therefore, the air in the battery storage chamber 11 flows out from the second ventilation hole 17, circulates between the space including the heat dissipation member 27, that is, between the numerous fins included in the heat dissipation member 27, and the third passage is driven by the fan 23. It flows out from the pores 25 to the outside of the housing 7. In addition, a heat radiating member can also be attached to the surface in which LED19 grade | etc., Is mounted of the board | substrate 21. FIG.

  FIG. 7 is a rear view showing the appearance of the lighting device 1. As shown in FIG. 7, the lighting device 1 displays a power button 31 for turning on / off the device, a fan drive button 33 for turning on / off the fan, a setting button 35 for performing various settings, a setting menu, and the like. A rear monitor 37 is provided.

  In the lighting device 1, the rotation of the fan 23 can be manually turned on / off by pressing the fan drive button 33. It is also possible to set to automatically start the rotation of the fan 23 when the lighting device 1 is turned on by pressing the power button 31 and the LED 19 starts to light. In this case, the rotation of the fan 23 is set to automatically stop when the LED 19 is turned off or after a predetermined time (for example, 10 seconds) has elapsed since the LED 19 was turned off. The automatic control method and predetermined time of the fan 23 can be set from a setting menu displayed on the rear monitor 37 by pressing the setting button 35.

  When the fan 23 starts rotating, the air outside the housing 7 flows into the battery storage chamber 11 from the first vent hole 15, flows through the space provided in the battery storage chamber 11, and cools each battery 9. To do. Then, the air in the battery housing chamber 11 flows into the second housing portion 5 from the second vent hole 17 and circulates between a large number of fins included in the heat dissipation member 27, that is, around the substrate 21. And the heat radiating member 27 is cooled. Finally, the air flowing between the numerous fins of the heat dissipation member 27 flows out of the housing 7 through the fan 23 and the third vent hole 25.

  According to the lighting device 1 according to the first embodiment, the first ventilation hole 15, the battery storage chamber 11, the second ventilation hole 17, the fins of the heat dissipation member 27, the fan 23, and the third ventilation hole 25. The heat radiation of the LED 19 and the battery 9 that generate heat can be reliably and efficiently performed only by circulating air through one flow path that passes through. Therefore, the lighting device 1 can be operated with high accuracy, and the life of the lighting device 1 can be extended.

  Next, a lighting apparatus according to the second embodiment of the present invention will be described. The lighting device according to the second embodiment includes the LED temperature sensor 40 (see FIG. 8), but has the same configuration as that of the lighting device 1 according to the first embodiment in other respects. doing. Therefore, in the illuminating device according to the second embodiment, the description of the same configuration as that of the illuminating device 1 according to the first embodiment is omitted, and the same configuration is described using the same reference numerals. Do.

  FIG. 8 is a diagram illustrating a partial configuration of the illumination device 1 according to the second embodiment. As shown in FIG. 8, the illuminating device 1 is provided with the LED temperature sensor 40 which detects temperature. The LED temperature sensor 40 is mounted on the substrate 21 in the vicinity of the LED 19 and detects the temperature of the LED 19. A detection result by the LED temperature detection sensor 40 is output to a control unit (not shown), and the control unit controls driving of the fan 23 based on the detection result.

  FIG. 9 is a flowchart for explaining a method of controlling driving of the fan 23 in the lighting device 1 according to the second embodiment.

  First, after the lighting device 1 is turned on, the control unit turns on the LED 19 when the user gives an instruction to turn on the LED 19 via an operation unit (not shown) or based on a detection result by a photometric sensor (not shown). If it is determined that it should be, the LED 19 is turned on (step S10), and the drive of the fan 23 is started (step S11). As the fan 23 rotates, air flows through the first housing 3 and the second housing 5, and the battery 9 and the LED 19 are dissipated.

  Next, when the user gives an instruction to turn off the LED 19 through an operation unit (not shown), or when it is determined that the LED 19 should be turned off based on a detection result by a photometric sensor (not shown), the LED 19 Is turned off (step S12), and the temperature of the LED 19 detected by the LED temperature sensor 40 is acquired (step S13).

  Next, a control part discriminate | determines whether the temperature of LED19 acquired in step S13 is more than predetermined temperature (step S14). The predetermined temperature is configured to be changeable, and is stored in a memory or the like (not shown). When it is determined that the temperature of the LED 19 is equal to or higher than the predetermined temperature (step S14, Yes), the control unit returns to step S13 and performs the processes of steps S13 and S14 until the temperature of the LED 19 becomes lower than the predetermined temperature. repeat. That is, the drive of the fan 23 is continued. And when it determines with the temperature of LED19 being lower than predetermined temperature (step S14, No), a control part stops the drive of the fan 23 (step S15).

  According to the lighting device according to the second embodiment, the first vent hole 15, the battery housing chamber 11, the second vent hole 17, the fins of the heat dissipation member 27, the fan 23, and the third vent hole 25 are provided. The heat dissipation of the LED 19 and the battery 9 that generate heat can be efficiently performed only by circulating air through one passage that passes therethrough. Further, since the fan 23 continues to be driven until the LED 19 becomes lower than the predetermined temperature even after the LED 19 is turned off, the heat radiation of the LED 19 can be reliably performed. Therefore, the lighting device 1 can be operated with high accuracy, and the life of the lighting device 1 can be extended.

  Next, an illuminating device according to a third embodiment of the present invention will be described. The lighting device according to the third embodiment includes a battery temperature sensor 42 (see FIG. 10) and a rotation direction switching unit 44 (see FIG. 11), but otherwise the second embodiment. It has the structure same as the illuminating device 1 which concerns on. Therefore, in the illuminating device according to the third embodiment, the description of the same configuration as that of the illuminating device 1 according to the second embodiment is omitted, and the same configuration is described using the same reference numerals. Do.

  FIG. 10 is a diagram illustrating a partial configuration of the illumination device 1 according to the third embodiment. As shown in FIG. 10, the lighting device 1 includes a battery temperature sensor 42 that performs temperature detection. The battery temperature sensor 42 is attached to the surface near the battery 9 and on the side of the substrate 21 of the battery housing 11, and detects the temperature of the battery 9. The battery temperature sensor 42 can be attached on the battery housing part 11, or a recess can be provided on the battery housing 11 and embedded in the recess.

  FIG. 11 is a block diagram illustrating a system configuration of the illumination device 1 according to the third embodiment. As shown in FIG. 11, the lighting device 1 includes a rotation direction switching unit 44 that switches the rotation direction of the fan 23, and a control unit 46 that controls switching of the rotation direction of the fan 23, driving of the fan 23, and the like. The rotation direction switching unit 44 switches the rotation direction of the fan 23 from the clockwise direction to the counterclockwise direction and from the counterclockwise direction to the clockwise direction by setting the opposite polarity. In this embodiment, the clockwise direction is the forward rotation direction and the counterclockwise direction is the reverse rotation direction, and the fan 23 functions as an exhaust fan when rotated in the forward direction, and functions as an intake fan when rotated in the reverse direction.

  When the fan 23 rotates in the forward rotation direction and functions as an exhaust fan, air flows along a flow path similar to the air flow path in the lighting devices according to the first and second embodiments. On the other hand, when the fan 23 rotates in the reverse direction and functions as an intake fan, the air flows along a flow path that is exactly opposite to the flow path of the air in the lighting devices according to the first and second embodiments. That is, air outside the housing 7 flows into the second housing part 5 from the third ventilation hole 25 and the fan 23, flows between a large number of fins included in the heat dissipation member 27, that is, around the substrate 21, and the LED 19 Then, the substrate 21 and the heat dissipation member 27 are cooled. And the air in the 2nd accommodating part 5 flows in into the battery storage chamber 11 from the 2nd ventilation hole 17, distribute | circulates the space provided in the battery storage chamber 11, and cools each battery 9. FIG. Finally, the air flowing through the battery storage chamber 11 flows out of the housing 7 through the first vent hole 15.

  As shown in FIG. 11, an LED temperature sensor 40 and a battery temperature sensor 42 are connected to the control unit 46, and the LED temperature sensor 40 and the battery temperature sensor 42 output detection results to the control unit 42. To do.

  FIG. 12 is a flowchart for explaining a method for controlling the driving of the fan 23 in the illumination device 1 according to the third embodiment.

  First, similarly to step S10 shown in FIG. 8, the control unit 46 turns on the LED 19 (step S20), and sets the rotation direction of the fan 23 to the normal rotation direction (step S21). When the rotation direction of the fan 23 is set to the reverse rotation direction, the control unit 46 outputs a control signal to the rotation direction switching unit 44, and the rotation direction switching unit 44 sets the rotation direction of the fan 23 to the normal rotation direction. Switch to. Next, the control unit 46 starts driving the fan 23 (step S22). As the fan 23 rotates, air flows from the inside of the battery housing chamber 11 into the second housing portion 5, so that the battery 9 and the LED 19 are dissipated.

  Next, the control unit 46 determines whether or not a predetermined time has elapsed since the fan 23 started rotating before turning off the LED 19 (No in Step S23), similarly to Step S12 shown in FIG. (Step S24). The predetermined time can be changed and is stored in a memory (not shown) or the like. When it is determined in step S24 that the predetermined time has elapsed (step S24, Yes), the control unit 46 detects the temperature of the LED 19 detected by the LED temperature sensor 40 and the battery 9 detected by the battery temperature sensor 42. Is obtained (step S25). And the temperature of LED19 acquired in step S25 and the temperature of the battery 9 are compared (step S26). When the comparison result that the temperature of the LED 19 is higher than the temperature of the battery 9 is obtained in step S <b> 26, the control unit 46 circulates air from the battery storage chamber 11 into the second storage unit 5. To be rotated in the forward rotation direction. That is, by cooling the LED 19 or the like having a high temperature, the temperature of the air also rises, and even if the air is circulated in the battery storage chamber 11, the effect of cooling the battery 9 cannot be expected. The air flow direction is determined so as to cool the battery 9 having a low target temperature and then cool the LED 19 and the like.

  On the other hand, when the comparison result that the temperature of the LED 19 is lower than the temperature of the battery 9 is obtained in step S26, the control unit 46 circulates air from the second storage unit 5 to the battery storage chamber 11, so that the fan 23 is determined to be rotated in the reverse direction. That is, by cooling the battery 9 having a high temperature, the temperature of the air also rises, and even if the air is circulated in the second housing portion 5, the effect of cooling the LED 19 and the like cannot be expected. The air flow direction is determined so that the LED 19 and the like are cooled and then the battery 9 is cooled.

  Next, the control unit 46 determines whether or not it is necessary to switch the rotation direction of the fan 23 (step S27). That is, when it is necessary to switch the fan 23 from the normal rotation direction to the reverse rotation direction or from the reverse rotation direction to the normal rotation direction (step S27, Yes), the control unit 46 sends a control signal to the rotation direction switching unit 44. The rotation direction switching unit 44 switches the rotation direction of the fan 23 (step S28). On the other hand, if it is determined in step S24 that the predetermined time has not elapsed (step S24, No), or if it is not necessary to switch the rotation direction of the fan 23 in step S27 (step S27, No), the control unit 46 returns to step S23 and repeats the processing of steps S23 to S28 until the LED 19 is turned off.

  Next, when the LED 19 is turned off as in step S12 shown in FIG. 9 (step S23, Yes), the control unit 46 detects the temperature of the LED 19 detected by the LED temperature sensor 40 and the battery temperature sensor 42. The temperature of the battery 9 to be used is acquired (step S29). And it is discriminate | determined whether at least one of the temperature of LED19 acquired in step S29 and the temperature of the battery 9 is more than predetermined temperature (step S30). The predetermined temperature is configured to be changeable, and is stored in a memory or the like (not shown). When it is determined that at least one of the temperature of the LED 19 and the temperature of the battery 9 is equal to or higher than the predetermined temperature (step S30, Yes), the control unit 46 returns to step S29, and the temperature of the LED 19 and the battery 9 is the predetermined temperature. The fan 23 continues to be driven until it becomes lower. And when it determines with the temperature of LED19 and the battery 9 being lower than predetermined temperature (step S30, No), the control part 46 stops the drive of the fan 23 (step S31).

  According to the illumination device according to the third embodiment, the rotation direction of the fan 23 can be switched, so that the fins of the first ventilation hole 15, the battery storage chamber 11, the second ventilation hole 17, and the heat dissipation member 27 are arranged. In the meantime, the air can be circulated by following one flow path passing through the fan 23 and the third vent hole 25 or the flow path opposite to the flow path, and efficiently radiating heat from the LED 19 and the battery 9. Can do. Further, since the temperatures of the LED 19 and the battery 9 can be detected and compared, the air flow path can be switched from a lower temperature to a higher temperature, and the heat radiation of the LED 19 and the battery 9 is reliably and efficiently performed. be able to. Therefore, the lighting device 1 can be operated with high accuracy, and the life of the lighting device 1 can be extended.

  In the second and third embodiments, after the LED 19 starts lighting, the fan 23 starts to be driven. However, after the temperature of the LED 19 (or the battery 9) rises to a predetermined temperature, the fan 23 can be started. Regardless of whether the LED 19 is turned on or off, the driving of the fan 23 can be controlled based on the determination result of whether or not the temperature of the LED 19 (or the battery 9) is equal to or higher than a predetermined temperature.

  Further, in each of the above-described embodiments, the fan 23 is driven by receiving power from the battery 9, but when the battery 9 is taken out from the lighting device 1 or when the remaining voltage of the battery 9 decreases. When the fan 23 cannot receive power supply from the battery 9, for example, a battery (primary battery or secondary battery) for supplying power only to the fan 23 can be mounted. In addition, for example, a capacitor or the like that stores electric power may be provided, and the fan 23 may be configured to receive power from a capacitor or the like when the power cannot be supplied from the battery 9. In these cases, for example, when the battery 9 is not loaded, the fan 23 can be driven regardless of the state of the battery 9. When power is supplied from a capacitor or the like, it is converted to a voltage value suitable for driving the fan 23 using a step-down DC-DC converter or the like. Further, the capacitor may be for supplying power only to the fan 23, or may be a shared object that supplies power to other electronic components.

  Further, in each of the above-described embodiments, a lighting device including a plurality of solid state light sources such as LEDs has been described as an example. However, for example, a lighting device including a flash unit composed of a xenon tube or the like is also described. The present invention can be applied. In this case, instead of the substrate on which the LED or the like is mounted, a flow path through which air flows is formed around the substrate on which a booster circuit for boosting the voltage of the power source is mounted.

  DESCRIPTION OF SYMBOLS 1 ... Illuminating device, 3 ... 1st accommodating part, 5 ... 2nd accommodating part, 7 ... Housing | casing, 9 ... Battery, 11 ... Battery storage chamber, 13 ... Battery cover, 15 ... 1st ventilation hole, 17 ... 2nd Ventilation hole, 19 ... LED, 21 ... substrate, 23 ... fan, 25 ... third ventilation hole, 27 ... radiating member, 29 ... light transmission member, 40 ... LED temperature sensor, 42 ... battery temperature sensor, 44 ... rotation direction switching Unit, 46... Control unit.

Claims (10)

An illumination device that emits illumination light for photographing,
A substrate on which an electronic component including a light source that emits the illumination light is mounted;
A battery storage chamber for storing a battery for supplying power to the electronic component;
A housing including a first housing portion that houses the battery housing chamber, and a second housing portion that is adjacent to the first housing portion and houses the substrate;
A first hole provided in a part of the first housing portion and serving as a vent hole for venting from the outside of the housing into the battery housing chamber in the first housing portion or venting from the battery housing chamber to the outside of the housing. Vents,
Air is provided near the boundary between the first housing portion and the second housing portion, and allows air to flow into the first housing portion from within the second housing portion, or air into the second housing portion from within the first housing portion. A second vent that allows the air to flow in;
A third vent hole provided in a part of the second housing portion, serving as a vent hole for venting the outside of the housing into the second housing portion or venting from the inside of the second housing portion to the outside of the housing;
With fans that circulate air,
A control unit for controlling driving of the fan;
A light source temperature detector for detecting the temperature of the light source or the vicinity of the light source;
A battery temperature detector for detecting the temperature of the battery or the vicinity of the battery;
A switching unit for switching the rotation direction of the fan ,
The control unit controls driving of the fan according to an emission operation of the illumination light from the light source, controls driving of the fan based on a detection result of the temperature detection unit for the light source, and Based on the detection results of the temperature detection unit and the battery temperature detection unit, control the switching of the rotation direction of the fan by the switching unit,
By driving the fan, the air flows from the first vent hole into the first accommodating portion and flows through the battery accommodating portion, and then continues from the second vent hole into the second accommodating portion. Flows around the substrate in the second storage portion and flows along the flow path that flows out of the housing through the third ventilation hole, or the flow path opposite to the flow path. It is comprised so that the illuminating device characterized by the above-mentioned. The controller starts driving the fan when the illumination light starts to be emitted, and drives the fan when the illumination light exits, or after a predetermined time has elapsed since the exit. The lighting device according to claim 1 , wherein the lighting device is terminated. An illumination device that emits illumination light for photographing,
A board on which electronic components are mounted and a heat dissipation member on the back surface of the surface on which the electrical components are mounted
A battery storage chamber for storing a battery for supplying power to the electronic component;
A housing including a first housing portion that houses the battery housing chamber, and a second housing portion that is adjacent to the first housing portion and houses the substrate;
A first hole provided in a part of the first housing portion and serving as a vent hole for venting from the outside of the housing into the battery housing chamber in the first housing portion or venting from the battery housing chamber to the outside of the housing. Vents,
Air is provided near the boundary between the first housing portion and the second housing portion, and allows air to flow into the first housing portion from within the second housing portion, or air into the second housing portion from within the first housing portion. A second vent that allows the air to flow in;
A third vent hole provided in a part of the second housing portion, serving as a vent hole for venting the outside of the housing into the second housing portion or venting from the inside of the second housing portion to the outside of the housing;
A fan for circulating air,
By driving the fan, the air flows from the first vent hole into the first accommodating portion and flows through the battery accommodating portion, and then continues from the second vent hole into the second accommodating portion. A flow path that flows in, flows around the substrate in the second storage section, flows through the space including the heat radiating member, and finally flows out of the housing through the third ventilation hole, or An illuminating device configured to circulate along a reverse flow path . An illumination device that emits illumination light for photographing,
A board on which electronic components are mounted;
A battery storage chamber for storing a battery for supplying power to the electronic component;
A first housing portion that houses the battery housing chamber and includes a battery lid that is capable of opening and closing an opening for loading the battery provided in the battery housing chamber; and the substrate adjacent to the first housing portion and the substrate A housing having a second housing portion for housing
A first vent hole provided in the battery lid, and serving as a vent hole for venting from the outside of the housing to the battery housing chamber in the first housing portion or from the battery housing chamber to the outside of the housing;
Air is provided near the boundary between the first housing portion and the second housing portion, and allows air to flow into the first housing portion from within the second housing portion, or air into the second housing portion from within the first housing portion. A second vent that allows the air to flow in;
A third vent hole provided in a part of the second housing portion, serving as a vent hole for venting the outside of the housing into the second housing portion or venting from the inside of the second housing portion to the outside of the housing;
A fan for circulating air,
By driving the fan, the air flows from the first vent hole into the first accommodating portion and flows through the battery accommodating portion, and then continues from the second vent hole into the second accommodating portion. Flows around the substrate in the second storage portion and flows along the flow path that flows out of the housing through the third ventilation hole, or the flow path opposite to the flow path. It is comprised so that the illuminating device characterized by the above-mentioned . An illumination device that emits illumination light for photographing,
A board on which electronic components are mounted;
A battery storage chamber in which a battery for supplying power to the electronic component is stored, and a space for allowing air to flow around the battery held inside the battery is provided therein.
A housing including a first housing portion that houses the battery housing chamber, and a second housing portion that is adjacent to the first housing portion and houses the substrate;
A first hole provided in a part of the first housing portion and serving as a vent hole for venting from the outside of the housing into the battery housing chamber in the first housing portion or venting from the battery housing chamber to the outside of the housing. Vents,
Air is provided near the boundary between the first housing portion and the second housing portion, and allows air to flow into the first housing portion from within the second housing portion, or air into the second housing portion from within the first housing portion. A second vent that allows the air to flow in;
A third vent hole provided in a part of the second housing portion, serving as a vent hole for venting the outside of the housing into the second housing portion or venting from the inside of the second housing portion to the outside of the housing;
A fan for circulating air,
By driving the fan, the air flows from the first vent hole into the first accommodating portion and flows through the battery accommodating portion, and then continues from the second vent hole into the second accommodating portion. Flows around the substrate in the second storage portion and flows along the flow path that flows out of the housing through the third ventilation hole, or the flow path opposite to the flow path. It is comprised so that the illuminating device characterized by the above-mentioned . A control unit for controlling the driving of the fan;
The electrical component includes a light source that emits the illumination light,
The lighting device according to any one of claims 3 to 5, wherein the control unit drives the fan according to an emission operation of the illumination light from the light source . The controller starts driving the fan when the illumination light starts to be emitted, and drives the fan when the illumination light exits, or after a predetermined time has elapsed since the exit. The lighting device according to claim 6, wherein the lighting device is terminated . A light source temperature detecting unit for detecting the temperature of the light source or the vicinity of the light source;
The lighting device according to claim 6, wherein the control unit controls driving of the fan based on a detection result of the temperature detection unit for the light source .   The lighting device according to claim 1, wherein the fan is provided in the vicinity of the first vent hole, the second vent hole, or the third vent hole. . The electrical component includes a capacitor for storing power,
The lighting device according to claim 1, wherein the capacitor supplies power to the fan when the fan cannot receive power from the battery.

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