JP2005017325A - Electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To safely mount a circuit to which high voltage is applied in electronic equipment using a fuel cell as the power source. <P>SOLUTION: A flash part consisting of a light emitting part 14, the circuit board 15 of a flash circuit, and a capacitor 16 are arranged on the right side in Fig., and a cell chamber 17 is arranged on the left side in Fig. in the casing of a camera 1. Furthermore, air holes 19 and 21 are provided between the cell chamber 17 and the flash part, and an air hole 20 is provided near the circuit board 15 and the capacitor 16 on the front 1-1 of the casing of the camera 1. Even if the fuel of the fuel cell housed in the cell chamber 17 leaks, the concentration of the leaked fuel is lowered by the time the leaked fuel reaches the flash part, and possibility that the fuel ignites the flash part gets low. The invention can be applied to a camera. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic device, and more particularly, to an electronic device in which a circuit to which a high voltage is applied can be safely mounted on an electronic device using a fuel cell as a power source.
[0002]
[Prior art]
In recent years, electronic devices typified by mobile phones and cameras have been downsized and enhanced in functionality, and batteries that serve as power sources for electronic devices have been required to be further downsized and enhanced in functionality. .
[0003]
As a battery that satisfies such a demand, a small fuel cell having a higher energy density than a conventionally used battery such as a lithium ion battery has recently attracted attention, and an electronic device using the fuel cell as a power source. Research and development of commercialization is underway.
[0004]
As described above, the electronic device using the fuel cell as a power source is still in the research and development stage, and there is no appropriate prior art document.
[0005]
[Problems to be solved by the invention]
Since such a fuel cell uses hydrogen, methanol, or the like as fuel, it is necessary to devise measures to prevent the ignition of those fuels. In particular, when a fuel cell is used as a power source of an electronic device that is equipped with a circuit that scatters sparks due to a high voltage such as a flash unit of a camera, measures against fuel leakage of the fuel cell are essential. That is, it is necessary to devise measures to prevent the fuel leaking from the fuel cell from being ignited by a spark scattered from a circuit to which a high voltage is applied.
[0006]
However, there has been a problem that an effective countermeasure (ingenuity) has not yet been developed.
[0007]
The present invention has been made in view of such a situation, and makes it possible to safely mount a circuit to which a high voltage is applied to an electronic device using a fuel cell as a power source.
[0008]
[Means for Solving the Problems]
A first electronic device according to the present invention includes a battery chamber that uses a fuel cell as a power source and accommodates the fuel cell, and a function execution unit that executes a predetermined function of the first electronic device. A portion to which at least a high voltage is applied is arranged on one side of one of the casings of the first electronic device and the other, and the battery chamber is arranged on the other side.
[0009]
The battery chamber disposed on one side of the casing and the other side of the casing, and the function execution unit disposed on the other side are arranged at a predetermined position between the portions where the high pressure is applied. An opening that communicates the space with the outside of the housing can be further provided.
[0010]
The first electronic device is a camera that photographs a subject, and the function execution unit includes a light emitting unit that emits light to the subject and a circuit that causes the light emitting unit to emit light when the subject is photographed by the camera. The flash unit, the camera further includes a photographic lens barrel, and at least the light emitting unit of the flash unit is disposed on one side of the camera housing and the other side of the camera lens barrel. The battery chamber can be arranged on the other side. Furthermore, the circuit of the flash unit can be further arranged on one side of the casing and the other side on the side where the light emitting unit is arranged.
[0011]
In the first electronic device of the present invention, at least a portion of the function execution unit that executes a predetermined function to which a high voltage is applied is disposed on one side of the casing and the other, and the other side. In addition, a battery chamber that houses a fuel cell serving as a power source for the first electronic device is disposed.
[0012]
According to a second electronic device of the present invention, a fuel cell is used as a power source, a battery chamber that houses the fuel cell, a function execution unit that executes a predetermined function of the second electronic device, a battery chamber, and a function execution unit A first opening that communicates the space inside the housing of the second electronic device to the outside of the housing, which is disposed at a predetermined position between the predetermined portion to which the high voltage is applied. Features.
[0013]
A second opening that communicates the space inside the housing to the outside of the housing, which is disposed in the vicinity of the portion to which the high voltage of the function execution portion is applied, can be provided.
[0014]
The second electronic device is a camera that photographs a subject, and the function execution unit includes a light emitting unit that emits light to the subject and a circuit that causes the light emitting unit to emit light when the subject is photographed by the camera. It is a flash part, The 1st opening part can be arrange | positioned in the predetermined position between a battery chamber and the light emission part or circuit of a flash part.
[0015]
In the second electronic device of the present invention, a battery chamber that houses a fuel cell serving as a power source for the second electronic device, and a predetermined portion to which a high voltage is applied among a function execution unit that executes a predetermined function, An opening that communicates the space inside the housing to the outside of the housing is disposed at a predetermined position between the two.
[0016]
According to a third electronic device of the present invention, a fuel cell is used as a power source, a battery chamber that houses the fuel cell, a function execution unit that executes a predetermined function of the third electronic device, and a high-voltage among the function execution units. It is provided with the opening part which is arrange | positioned in the vicinity of the predetermined part to which a voltage is applied, and connects the space inside the housing of an electronic device to the exterior of a housing.
[0017]
The third electronic device is a camera that photographs a subject, and the function execution unit includes a light emitting unit that emits light to the subject and a circuit that causes the light emitting unit to emit light when the subject is photographed by the camera. It is a flash part, and an opening part can be arrange | positioned in the vicinity of the light emission part or circuit of a flash part.
[0018]
In the third electronic device of the present invention, a battery chamber that houses a fuel cell serving as a power source for the third electronic device, and a function execution unit that executes a predetermined function are mounted. An opening that communicates the space inside the housing to the outside of the housing is disposed in the vicinity of the predetermined portion to which the high voltage is applied.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a configuration example of the external appearance of the front of a camera as an electronic apparatus to which the present invention is applied.
[0020]
As shown in FIG. 1, a front view 1-1 of the housing of the camera 1 is provided with a finder 11 for the user to visually recognize a subject in the upper direction in the center of the figure, and below that, A lens barrel 12 having a photographing lens 12-1 for photographing a subject is provided, and in the upper left direction of the finder 11 in the drawing, that is, in front of the housing 1-1 of the camera 1-1. Of the vertical side surfaces, the side surface 1-5 arranged in the upward direction in the figure is provided with a release button 13 that the user presses when photographing a subject.
[0021]
On the right side of the front surface 1-1 of the housing of the camera 1, a light emitting unit 14 that emits light as a flash when a user shoots a subject is provided in the upward direction in the figure. A circuit board 15 on which a flash circuit (the circuit shown in FIG. 5 to be described later) for causing the light emitting unit 14 to emit light, and a capacitor 16 for charging energy (electric charge) for causing the light emitting unit 14 to emit light are provided. ing. Hereinafter, the light emitting unit 14, the circuit board 15, and the capacitor 16 are collectively referred to as a flash unit.
[0022]
On the other hand, on the left side of the front surface 1-1 of the housing of the camera 1, a fuel cell (for example, a fuel cell 29 in FIG. 2 described later) serving as a power source for the camera 1 is housed inside the housing. A battery chamber 17 is provided.
[0023]
As described above, in the camera 1, the flash unit is arranged on the right side of the housing in the drawing, and the battery chamber 17 is arranged on the opposite side (on the left side in the drawing) across the lens barrel 12. Yes. Such an arrangement is performed for the purpose of increasing the distance between the flash unit and the battery chamber 17 as much as possible. Thereby, even if the fuel in the fuel cell stored in the battery chamber 17 leaks, By the time the leaked fuel reaches the flash part, its concentration decreases, and the possibility of the fuel igniting in the flash part decreases.
[0024]
In particular, by sandwiching the lens barrel 12, the lens barrel 12 becomes a so-called protective wall, and the effect becomes more remarkable.
[0025]
The flash unit and the battery chamber 17 are arranged on the left and right sides of the lens barrel 12 in the present embodiment (the example of FIG. 1 and FIG. 2 described later), but in the present invention, the flash unit The arrangement positions of the battery chamber 17 are not limited to this, and may be any positions as long as the lens barrel 12 is sandwiched therebetween. For example, the battery chamber 17 may be located above and below the lens barrel 12.
[0026]
Further, an air hole 18 that communicates the inside of the battery chamber 17 and the space outside the housing of the camera 1 is provided in the vicinity of the battery chamber 17 on the front surface 1-1 of the camera 1 housing. Between the tube 12 (between the battery chamber 17 and the flash circuit 15 and the capacitor 16), an air hole 19 that communicates the space inside the housing of the camera 1 with the space outside thereof is provided between the battery chamber 17 and the light emitting unit 14. In addition, air holes 21 are provided for communicating the inside of the housing of the camera 1 with the space outside thereof.
[0027]
The air hole 18 is provided to take in oxygen used for power generation by the fuel cell housed in the battery chamber 17 from the space outside the housing of the camera 1 into the battery chamber 17 (fuel cell). .
[0028]
On the other hand, the air hole 19 and the air hole 21 are provided as a countermeasure when the fuel of the fuel cell stored in the battery chamber 17 leaks. That is, even if fuel in the fuel cell stored in the battery chamber 17 leaks, outside air flows into the housing of the camera 1 from each of the air hole 19 and the air hole 21, and the leaked fuel (gas) Since the air hole 19 and the air hole 21 are discharged to the outside of the housing of the camera 1, the concentration of the leaked fuel is further reduced, and the possibility that the fuel is ignited in the flash portion is further reduced.
[0029]
In order to further reduce the concentration of the leaked fuel, the space inside the housing of the camera 1 and the space outside thereof are communicated in the vicinity of the circuit board 15 and the capacitor 16 of the flash circuit on the front surface 1-1 of the housing of the camera 1. An air hole 20 is further provided.
[0030]
This further reduces the concentration of the leaked fuel, further reducing the possibility of the fuel igniting in the flash section.
[0031]
FIG. 2 shows a horizontal cross section of the portion AA ′ of FIG.
[0032]
As shown in FIG. 2, the interior of the housing of the camera 1 is located on the left side of the figure (the side 1-3 side of the side surface perpendicular to the front surface 1-1 of the housing) from the front surface 1-1 of the housing. In order toward the back surface 1-2 (the surface 1-2 facing the front surface 1-1), the above-described battery chamber 17 that houses the fuel cell 29, and a circuit board 26 on which a circuit that controls the overall operation of the camera 1 is mounted. -1 and a memory card 27 for recording image data taken by the camera 1, and a circuit for controlling the overall operation of the camera 1 from the left side to the right side of the housing behind the memory card 27. A circuit board 26-2 is provided.
[0033]
A memory card cover 28 is provided on the side surface 1-3 of the housing of the camera 1. The memory card cover 28 is opened when the user inserts / removes the memory card 27, and is closed otherwise.
[0034]
In contrast, on the right side of the inside of the housing of the camera 1 (on the side surface 1-4 side of the side surface perpendicular to the front surface 1-1 of the housing), from the front surface 1-1 to the rear surface 1-2. The capacitor 16 in the flash unit described above and the circuit board 15 of the flash circuit are provided in order. The circuit board 26-2 described above is provided behind the circuit board 15.
[0035]
In addition, a lens barrel 12 is provided in the center of the inside of the housing of the camera 1. The lens barrel 12 has a lens 12-1 and a shutter in order from the front surface 1-1 to the rear surface 1-2. A unit 12-2, a lens 12-3, and a lens 12-4 are provided.
[0036]
A CCD (Charge Coupled Device), which is an image sensor that captures an object in order from the front 1-1 to the rear 1-2 of the housing, further behind the lens 12-4 at the center inside the housing of the camera 1. 23, the above-described circuit board 26-2, and an LCD (Liquid Crystal Display) 24 for displaying an image such as an image of a subject photographed by the camera 1 (captured by the CCD 23).
[0037]
An LCD window 25 for protecting the LCD 24 is provided on the back surface 1-2 of the housing of the camera 1, and the user can view an image displayed on the LCD 24 through the LCD window 25.
[0038]
As described above, inside the housing of the camera 1, in the drawing, the battery chamber 17 is arranged on the left side with the lens barrel 12 interposed therebetween, and on the right side, the circuit board 15 of the flash circuit in the flash unit, and , A capacitor 16 is arranged.
[0039]
Further, as described above, the air hole 18 that communicates the inside of the battery chamber 17 and the space outside the housing of the camera 1 is formed in the front surface 1-1 of the housing of the camera 1 in the vicinity of the battery chamber 17. Between the chamber 17 and the lens barrel 12 (between the battery chamber 17, the circuit board 15 of the flash circuit and the capacitor 16), an air hole 19 which communicates the inside of the housing of the camera 1 and the space outside thereof is provided in the capacitor 16. Are provided with air holes 20 that communicate the interior of the housing of the camera 1 with the space outside thereof.
[0040]
A water repellent sheet 21 is provided between the air holes 18 and the air holes 19 and the inside of the housing, and a water repellent sheet 22 is provided between the air holes 20 and the inside of the housing.
[0041]
The housing of the camera 1 includes a front cover 32 on the front surface 1-1 side and a rear cover 33 on the rear surface 1-2 side, with a side surface 1-3 and a substantially central portion of the side surface 1-4 as the boundary. Has been. The rear cover 33 can be opened and closed.
[0042]
FIG. 3 shows a horizontal cross section of the part BB ′ of FIG.
[0043]
As shown in FIG. 3, the light emitting unit 14 of the flash unit is provided inside the housing of the camera 1 on the right side (side surface 1-3 side of the housing) in the figure. , In order from the front surface 1-1 to the rear surface 1-2 of the housing, a protector 14-1 that prevents the sparks from scattering outside the housing, the reflector 14-2 that reflects the emitted light, and the above-mentioned An Xe tube 14-3 that emits light based on the control of the flash circuit is provided.
[0044]
Inside the housing of the camera 1, a finder unit 34 is provided on the left side of the light emitting unit 14 in the drawing (in the center in FIG. 1) with a predetermined space from the light emitting unit 14. The finder unit 34 is for the user to visually recognize the subject located opposite to the finder 11 described above, but is not directly related to the present invention and is easy to understand for those skilled in the art. The description of the configuration is omitted.
[0045]
On the front surface 1-1 of the housing of the camera 1, the air hole 21 described above is provided between the light emitting unit 14 and the finder 11 to communicate the space inside the housing of the camera 1 with the space outside thereof. That is, as described above (as shown in FIG. 1), the air hole 21 is provided between the light emitting unit 14 and the battery chamber 17 disposed on the left side in FIG. A water-repellent sheet 31 is provided between the air hole 21 and the inside of the housing, similarly to the other air holes 18 to 20.
[0046]
FIG. 4 is a block diagram illustrating an example of an electrical configuration of the camera 1.
[0047]
As shown in FIG. 4, the camera 1 is provided with a main control unit 51 that controls the overall operation of the camera 1 using the fuel cell 29 (FIG. 2) housed in the battery chamber 17 as a power source. Yes.
[0048]
That is, although not shown, the main control unit 51 is provided with a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), etc., and the CPU is stored in the ROM or the like. The overall operation of the camera 1 is controlled according to the program loaded into the RAM from the existing program. The RAM also appropriately stores data necessary for the CPU to execute various processes.
[0049]
In other words, the main control unit 51 controls each of the image processing unit 53 to the flash unit 59 described later according to a signal input from the input unit 52 described later.
[0050]
The camera 1 also has an input unit 52 including the release button 13 (FIG. 1) described above and an image signal supplied from the CCD 23 (an image signal photographed by the CCD 23 and converted into an analog signal). When the release button 13 included in the image processing unit 53 that performs predetermined image processing and the shutter unit 12 (FIG. 2) is pressed, the light from the lens 14-1 is allowed to pass for a predetermined exposure time. The shutter (not shown) is opened, and in other cases, the shutter motor 54 for closing the shutter, the focusing motor 55 for adjusting the diaphragm amount (not shown) for the lens 14-1, and the mirror for zooming are used. A zooming motor 56 for expanding and contracting the cylinder 14 and a zoom encoder 57 for controlling the zooming motor 56 are provided.
[0051]
The camera 1 further includes an LCD driving unit 58 for driving the LCD 24 described above, a flash circuit mounted on the circuit board 15 (FIG. 2), a capacitor 16 (FIG. 2), and a light emitting unit 14 ( A flash unit 59 including an Xe tube 14-3 (FIG. 3) is provided.
[0052]
In this example, each of the circuits corresponding to the main control unit 51, the image processing unit 53, and the LCD driving unit 58 is, for example, the circuit board 12-1 or the circuit board 12-2 in FIG. It is mounted on one of them.
[0053]
In addition, the power source of the camera 1 is only the fuel cell 29 in the example of FIG. 4, but is not limited to the example of FIG. 4, and the secondary battery (not shown) such as the fuel cell 29 and a lithium ion battery. May be used in combination. In this case, a power control unit (not shown) is provided between the main control unit 51 and the fuel cell 29 and the secondary battery. For example, the power supply control unit performs control (switching control) for selecting either the fuel cell or the secondary battery as the power source of the camera 1 or charges the secondary battery from the fuel cell to the secondary battery. Or the main power supply of the camera 1 is controlled.
[0054]
FIG. 5 is a circuit diagram showing a detailed configuration example of the flash unit 59 of FIG.
[0055]
As shown in FIG. 5, the flash unit 59 includes a series circuit in which a switch 77 and a resistor 78 are connected in series to a fuel cell 29 serving as a power source, and a switch 71 and a high-voltage circuit 91 connected in series. The series circuit thus configured is connected in parallel.
[0056]
The high voltage circuit 91 is a circuit to which a high voltage is applied, and is configured as shown in FIG.
[0057]
That is, the high-voltage circuit 91 is provided with a booster circuit 72 that converts the DC voltage of the fuel cell 29 into an AC voltage and boosts the AC voltage when the switch 71 is turned on. That is, the fuel cell 29 and the switch 71 are connected in series on the primary side of the booster circuit.
[0058]
On the other hand, an input end of a rectifier 73 that rectifies an alternating current output from the secondary side of the booster circuit 72 is connected to one end (upper end in the drawing) of the booster circuit 72. Further, between the output terminal of the rectifier 73 and the other end on the secondary side of the booster circuit 72 (lower end in the figure), the above-described capacitor 16 for charging the high voltage charge output from the rectifier 73, The above-described Xe tube 14-3 that emits light as a flash and a series circuit in which a resistor 75 and a thyristor 76 are connected in series are connected in parallel.
[0059]
The gate of the thyristor 76 is connected to the connection end of the switch 77 and the resistor 78, and the cathode is connected to the other end of the resistor 78 (the end on the side to which the fuel cell 29 is connected). Thus, when the switch 77 is turned on, a forward voltage is applied between the gate and the cathode of the thyristor 76 (a gate current flows from the fuel cell 29 through the switch 77 to the gate of the thyristor 76), and the thyristor 76 is turned on. Turn on.
[0060]
In addition to the resistor 75 described above, one end (right end in the figure) of the capacitor 79 is connected to the anode of the thyristor 76. A primary side of a trigger transformer 80 for causing the Xe tube 14-3 to discharge light is connected between the other end of the capacitor 79 (left end in the figure) and the cathode of the thyristor 76. The secondary side of the trigger transformer 80 is disposed at a position where the Xe tube 14-3 can discharge and emit light.
[0061]
That is, the high-voltage circuit 91 is provided with a rectifier 73, a capacitor 16, an Xe tube 14-3, a resistor 75, a thyristor 76, a capacitor 79, and a trigger transformer 80 in addition to the booster circuit 72, as described above. A high voltage is applied to each of these elements.
[0062]
Here, the operation of the flash unit 59 will be briefly described.
[0063]
When the user operates a corresponding button (not shown) in the input unit 52 (FIG. 4) in order to use the flash function, the main control unit 51 (FIG. 4) detects the operation, and the switch 71 is turned on.
[0064]
At this time, the booster circuit 72 converts the DC power source of the fuel cell 29 to an AC power source, and then boosts the voltage by an internal transformer. The boosted AC power supply (high voltage AC power supply) is converted into a DC power supply again by the rectifier 73, and the capacitor 16 is charged with a high voltage charge by the DC power supply.
[0065]
Next, when the user operates (presses) the release button 13 (FIG. 1) of the input unit 52 (FIG. 4) in order to photograph the subject, the main control unit 51 (FIG. 4) detects the operation. Switch 77 is turned on.
[0066]
As a result, a gate current flows from the fuel cell 29 through the switch 77 to the gate of the thyristor 76 (a forward voltage is applied between the gate and the cathode of the thyristor 76), and the thyristor 76 is turned on.
[0067]
When the thyristor 76 is turned on, the electric charge accumulated in the capacitor 16 is discharged through the primary side of the trigger transformer 80 through the resistor 75 and the capacitor 79, so that the secondary side of the trigger transformer transformer 80 has a high voltage ( In general, a voltage of several kV is generated.
[0068]
Due to the high voltage generated on the secondary side of the trigger transformer transformer 80, a part of the gas in the Xe tube 14-3 is ionized, the internal resistance in the Xe tube 14-3 is lowered, and the Xe tube 14-3 is Discharge light emission.
[0069]
In this example, the switch 71 and the switch 77 are part of a flash circuit mounted on the circuit board 15 (FIG. 2), but the switch 71 is included in the input unit 52 (FIG. 4). The predetermined button (not shown) itself may be used, and the switch 71 may be the release button 13 (FIG. 1) of the input unit 52 itself.
[0070]
In this way, the high voltage circuit 91 may generate a spark if a high voltage is applied and the short circuit may occur. Therefore, in the camera 1 (FIG. 1), as described above (as shown in FIGS. 1 to 3), the high voltage circuit 91 (the circuit board 15 and the capacitor 16 (FIG. 2) constituting the high voltage circuit 91, and The Xe tube 14-3 (FIG. 3) is disposed as far as possible from the battery chamber 19 in which the fuel cell 29 is accommodated. That is, as shown in FIG. 1, in the camera 1, the high voltage circuit 91 is arranged on the right side in the figure of the camera casing, and the battery chamber 17 is arranged on the left side in the figure.
[0071]
As a result, even if the fuel in the fuel cell 29 (FIG. 2) stored in the battery chamber 17 leaks, the concentration of the leaked fuel decreases until it reaches the high-pressure circuit 91, and the fuel is discharged from the high-pressure circuit 91. The possibility of igniting decreases.
[0072]
Further, as shown in FIG. 1, an air hole 19 is provided between the battery chamber 17 and the circuit board 15 and the capacitor 16 in the high voltage circuit 91 on the front surface 1-1 of the camera 1. An air hole 20 is provided in the vicinity of the substrate 15 and the capacitor 16, and an air hole 21 is provided between the battery chamber 17 and the light emitting unit 14 (Xe tube 14-3 (FIG. 3)) of the high-voltage circuit 91. It has been.
[0073]
Thereby, even if the fuel in the fuel cell 29 stored in the battery chamber 17 leaks, outside air flows into the housing of the camera 1 from each of the air hole 19, the air hole 20, and the air hole 21, Since the leaked fuel (gas) is discharged from the air hole 19, the air hole 20, and the air hole 21 to the outside of the housing of the camera 1, the concentration of the leaked fuel further decreases, and the high-pressure circuit 91 The possibility of fuel igniting is further reduced.
[0074]
The electronic device to which the present invention is applied is not limited to the camera 1 described above, and may be an electronic device that can mount a fuel cell and a circuit to which a high voltage is applied in the housing. For example, the present invention can be applied to a mobile phone, a portable information processing terminal represented by PDA (Personal Digital Assistants), and the like.
[0075]
【The invention's effect】
As described above, according to the present invention, a fuel cell can be used as a power source for an electronic device. In particular, a circuit to which a high voltage is applied can be safely mounted on an electronic device that uses a fuel cell as a power source.
[Brief description of the drawings]
FIG. 1 is a front view illustrating a configuration example of an external appearance of a camera to which the present invention is applied.
2 is a horizontal cross-sectional view of the AA ′ portion of the camera of FIG. 1. FIG.
3 is a horizontal sectional view of the BB ′ portion of the camera of FIG. 1. FIG.
4 is a block diagram showing an example of the electrical configuration of the camera of FIG. 1. FIG.
5 is a circuit diagram showing a detailed configuration example of a flash unit of the camera of FIG. 4; FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Camera 14 Light emission part 14-3 Xe tube 15 Circuit board 16 of flash circuit Capacitor 17 Battery chamber 19 Air hole 20 Air hole 21 Air hole 29 Fuel cell 59 Flash part 91 High voltage circuit

Claims (9)

In electronic devices powered by fuel cells,
A battery chamber containing the fuel cell;
A function execution unit that executes a predetermined function of the electronic device;
A portion to which at least a high voltage is applied in the function execution unit is disposed on one side of one of the casings of the electronic device and the other, and the battery chamber is disposed on the other side. Electronics. Arranged at a predetermined position between the battery chamber arranged on one side of the casing and the other side of the casing and the portion to which the high pressure of the function execution unit arranged on the other side is applied; The electronic device according to claim 1, further comprising an opening that communicates a space inside the housing to the outside of the housing. The electronic device is a camera that photographs a subject,
The function execution unit is a flash unit including a light emitting unit that emits light to the subject and a circuit for causing the light emitting unit to emit light when the subject is photographed by the camera.
The camera has a photographic lens barrel,
At least the light emitting unit of the flash unit is disposed on one side of the camera housing and the other side of the camera lens barrel, and the battery chamber is disposed on the other side. The electronic device according to claim 1, wherein: The electronic device according to claim 3, wherein the circuit of the flash unit is further arranged on one side of the casing and the other side on the side where the light emitting unit is arranged. In electronic devices powered by fuel cells,
A battery chamber containing the fuel cell;
A function execution unit for executing a predetermined function of the electronic device;
A space inside the housing of the electronic device, which is disposed at a predetermined position between the battery chamber and a predetermined portion to which a high voltage is applied in the function execution unit, communicates with the outside of the housing. And an opening. 2. The apparatus according to claim 1, further comprising a second opening that is disposed in the vicinity of the portion to which a high voltage is applied in the function execution unit and communicates a space inside the housing to the outside of the housing. 5. The electronic device according to 5. The electronic device is a camera that photographs a subject,
The function execution unit is a flash unit including a light emitting unit that emits light to the subject and a circuit for causing the light emitting unit to emit light when the subject is photographed by the camera.
The electronic device according to claim 5, wherein the first opening is disposed at a predetermined position between the battery chamber and the light emitting unit or the circuit of the flash unit. In electronic devices powered by fuel cells,
A battery chamber containing the fuel cell;
A function execution unit for executing a predetermined function of the electronic device;
An electronic device comprising: an opening that communicates a space inside the housing of the electronic device to the outside of the housing, which is disposed in the vicinity of a predetermined portion to which a high voltage is applied in the function execution unit. machine. The electronic device is a camera that photographs a subject,
The function execution unit is a flash unit including a light emitting unit that emits light to the subject and a circuit for causing the light emitting unit to emit light when the subject is photographed by the camera.
The electronic device according to claim 8, wherein the opening is disposed in the vicinity of the light emitting unit or the circuit of the flash unit.

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