JP5708545B2 - flashlight - Google Patents

Description

  The present invention relates to a flashlight, and more particularly to a flashlight having a manual power generation unit.

  Conventionally, a flashlight including an electromagnetic induction type vibration power generation unit that converts kinetic energy into electrical energy is known (see, for example, Patent Document 1). The invention disclosed in Patent Document 1 includes a cylindrical casing, a cylindrical member provided in the casing, a permanent magnet capable of reciprocating in the axial direction inside the cylindrical member, and a cylindrical member. A coil wound around the outer peripheral surface of the body, a bridge-type rectifier connected to the coil, a capacitor connected to the rectifier, a constant-current diode for supplying power discharged from the capacitor, and the constant A current diode and a light emitting diode connected in the forward direction. As the permanent magnet reciprocates, an induced current is generated in the coil. The induced current flows through the capacitor after being rectified by the bridge rectifier circuit. As a result, electric power is stored in the capacitor. After power storage, the light emitting diode emits light by supplying the power stored in the capacitor to the light emitting diode.

JP 2004-265847 A

  However, in the invention disclosed in Patent Document 1, when the use is started from a state where the capacitor is not charged, the user vibrates the permanent magnet, and the power is supplied to the capacitor until the voltage at which the light emitting diode can emit light with a predetermined luminance. Must be charged. For this reason, there was a problem that the light emitting diode could not emit light immediately after the start of use.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a flashlight including a manual power generator that can emit light immediately after use.

The flashlight of one embodiment of the present invention is connected to the light emitting unit that emits light when power is supplied and to the light emitting unit, and can be connected to any one of the non-conduction point, the first connection point, and the second connection point. A switch unit; a power source unit that supplies predetermined power; the power source unit connected to the first connection point; and a manual power generation unit that manually generates power and is connected to the second connection point; A power storage unit that stores power to be generated and stores the power supplied by the power supply unit via a backflow prevention diode when the switch unit is connected to the first connection point, and the switch unit includes: the non-conductive point, said first connection point is connectable to the order of the second connecting point, and when the switch portion is connected to said second connection point, power the manual power generating unit is generating and The electric power stored in the power storage unit is supplied to the light emitting unit. And wherein the door.

In the flashlight of this aspect, when the user connects the switch unit to the first connection point, the power storage unit immediately stores the power supplied by the power supply unit. Thereafter, when the user connects the switch unit to the second connection point, the power storage unit supplies the power stored by itself to the light emitting unit. As a result, the light emitting unit can emit light immediately. Further, at this time, the manual power generation unit can supply the power generated by itself to the power storage unit, and can compensate for the power that gradually decreases in the power storage unit. That is, the user does not have to wait until the power storage unit is stored using the manual power generation unit, and the light emitting unit can immediately emit light. Even after that, the user can continuously emit the flashlight by generating power using the manual power generation unit. Further, when the switch unit is connected to the first connection point and the power storage unit sufficiently stores power, the power supply unit supplies power to the light emitting unit, and the light emitting unit emits light. That is, the user can immediately recognize visually the timing of connecting the switch unit from the first connection point to the second connection point by the light emission of the light emitting unit. The switch unit can be connected in the order of the non-conduction point, the first connection point, and the second connection point. Since the switch units can be connected in this order, if the user performs an operation of connecting the switch units in order from the first connection point to the second connection point, the user can store power in the power storage unit when connected to the first connection point. The generated power can be reliably supplied to the light emitting unit. Therefore, high operability of the flashlight can be realized.

  In the flashlight of this aspect, the power storage unit may be an electric double layer capacitor. If it is an electric double layer capacitor, even if it charges / discharges repeatedly, there will be little deterioration of a characteristic. For this reason, the life of the flashlight can be extended. In addition, with an electric double layer capacitor, the time required for power storage is extremely short, and the power storage capacity can be increased.

2 is a secondary sectional view showing an internal structure of the flashlight 1. FIG. It is a figure which shows the state which has the movable part 162 in the non-conductive position 162A which is the movable range of the movable part 162 of the switch part 160, and the left end of a movable range. It is a figure which shows the electric circuit 100 of the state in which the movable side terminal 160D of the switch part 160 was connected to 160 A of non-conduction. It is a figure which shows the electric circuit 100 of the state in which the movable side terminal 160D of the switch part 160 was connected to the 1st connection terminal 160B. It is a figure which shows the electric circuit 100 of the state in which the movable side terminal 160D of the switch part 160 was connected to the 2nd connection terminal 160C.

  A flashlight 1 according to an embodiment of a flashlight embodying the present invention will be described with reference to the drawings. First, the internal structure of the flashlight 1 will be described with reference to FIGS. In the following description, the right side in FIG. 1 is defined as the front side of the flashlight 1, and the left side in FIG. 1 is defined as the rear side of the flashlight 1.

  As shown in FIG. 1, the flashlight 1 includes a housing unit 10, a switch unit 160, a light emitting unit 5 provided on the front end side of the housing unit 10, and vibrations provided inside the housing unit 10. The vibration power generation unit 2 that generates power and the substrate 40 that is electrically connected to the vibration power generation unit 2 are configured.

  First, the case 10 will be described. The casing 10 includes a casing 17, a wall 18 </ b> A that forms the rear end of the casing 17, and 18 </ b> B that forms the front end of the casing 17. The casing 17 has a cylindrical shape, and its axial direction extends in the front-rear direction of the flashlight 1. A disc-shaped wall portion 18 </ b> A is attached to the rear end portion of the housing 17. In addition, a disk-shaped wall portion 18 </ b> B is attached to the front end portion of the housing 17. A non-magnetic material such as resin (polycarbonate resin or acrylic resin) is used as the material of the housing 17 and the wall portions 18A and 18B.

  Next, the light emitting unit 5 will be described with reference to FIG. The light emitting unit 5 includes a conical member 8, a reflecting mirror 9 provided inside the conical member 8, and a light emitting diode 170 provided inside the reflecting mirror 9. A conical conical member 8 that opens toward the front side is provided on the front end side of the housing 17. Further, the inside of the rear end portion of the conical member 8 is covered with a wall portion 18B. On the front end side of the conical member 8, a translucent transparent member 12 that prevents foreign matter from entering the inside of the conical member 8 is attached. Further, in a space surrounded by the conical member 8, the wall portion 18B, and the transparent member 12, a reflecting mirror 9 that is a substantially semi-elliptical body and that opens at the front end side is provided. The inner peripheral surface of the reflecting mirror 9 is plated and has light reflectivity. Furthermore, a light emitting diode 170 is provided inside the rear end of the reflecting mirror 9. More specifically, the light emitting diode 170 is provided in the vicinity of the center of the wall portion 18B described above. The light emitting surface 172 of the light emitting diode 170 protrudes from the vicinity of the center of the wall portion 18B toward the inside of the reflecting mirror 9. The light emitted from the light emitting surface 172 is reflected forward by the reflecting mirror 9 and passes through the transparent member 12. The rear portion of the light emitting diode 170 protrudes from the vicinity of the center of the wall portion 18B toward the inside of the housing 17 and is attached to a substrate 40 described later.

  Next, the switch unit 160 will be described with reference to FIGS. 1 and 2. The switch unit 160 includes a movable unit 162 and a fixed unit 163 as its mechanical configuration. The fixing portion 163 is provided on the front end side of the housing 17, and a part thereof protrudes from the outer peripheral surface 17 </ b> A toward the outside of the housing 17. A protruding portion of the fixed portion 163 is provided with a movable portion 162 that can slide in the front-rear direction of the flashlight 1. As shown in FIG. 2, the movable portion 162 is slidable forward (in the direction of arrow A) from a non-conduction position 162 </ b> A that is the left end position of its movable range. Thereby, the movable part 162 can be moved stepwise to the first switching position 162B at a position substantially in the middle of its movable range and the second switching position 162C at the right end position of the movable range. More specifically, when the user does not use the flashlight 1, the movable part 162 is located at the non-conduction position 162A. And when a user starts use of the flashlight 1, the switch part 160 becomes a structure switched to a 1st step by sliding the movable part 162 to the 1st switching position 162B. The switch unit 160 is configured to be switched to the second stage when the user slides the movable unit 162 to the second switching position 162C. In FIG. 2, the movable part 162 when it slides to the 1st switching position 162B and the 2nd switching position 162C is shown with the virtual line. The fixing portion 163 is fixed to the housing 17 and is electrically connected to a substrate 40 described later. For this reason, the electrical connection state of the switch part 160 in the electric circuit 100 mentioned later switches in response to the slide of the movable part 162.

  Next, the vibration power generation unit 2 will be described with reference to FIG. The vibration power generation unit 2 includes a cylindrical member 11, a lid member 19 that forms a front end portion of the cylindrical member 11, a mover 13 provided inside the cylindrical member 11, and an outer peripheral surface 11 </ b> A of the cylindrical member 11. And a coil 20 wound around. The cylindrical member 11 is provided in a space surrounded by the casing 17 and the wall portions 18A and 18B. The cylindrical member 11 has a cylindrical shape, and its axial direction extends in the front-rear direction of the flashlight 1. The rear end surface of the cylindrical member 11 is in contact with the front end surface of the wall portion 18A. A disc-shaped lid member 19 is attached to the front end portion of the cylindrical member 11. The inner diameter of the cylindrical member 11 is approximately 1/3 of the inner diameter of the housing 17. As a material of the cylindrical member 11, a nonmagnetic material such as a resin (acetal resin, liquid crystal polymer resin) can be used.

  In a space surrounded by the cylindrical member 11, the wall portion 18 </ b> A, and the lid member 19, a mover 13 that is cylindrical and whose axial direction extends in the front-rear direction of the flashlight 1 is provided. The outer diameter of the mover 13 is slightly smaller than the inner diameter of the cylindrical member 11. The mover 13 can reciprocate in the cylindrical member 11 in the axial direction of the cylindrical member 11, and its movement is regulated by the wall portion 18 </ b> A and the lid member 19. The mover 13 includes a unit magnet 14. The unit magnet 14 is a permanent magnet having a pair of magnetic poles and is magnetized in the axial direction.

  A coil 20 is wound around the outer peripheral surface 11 </ b> A of the cylindrical member 11. The coil 20 includes unit coils 221, 222, and 223. The unit coils 221, 222, and 223 are wound in a direction perpendicular to the axial direction of the cylindrical member 11 in a state of being adjacent to each other. The direction in which the unit coils 221 and 223 are wound is the same direction. The direction in which the unit coil 222 is wound is opposite to the direction in which the unit coils 221 and 223 are wound. As will be described later, when the mover 13 reciprocates in the axial direction of the cylindrical member 11, an alternating induced current is generated in the coil 20. As the unit coils 221, 222, and 223, for example, an enameled wire or the like wound many times can be used.

  Next, the substrate 40 will be described with reference to FIG. The substrate 40 is provided on the front end side in the housing 17 and is electrically connected to the output portion of the coil 20. In addition to the light emitting diode 170 and the switch unit 160 described above, each component constituting the electric circuit 100 described later is mounted on the substrate 40.

  Next, the electric circuit 100 of the substrate 40 will be described with reference to FIG. The electric circuit 100 includes a bridge rectification unit 110 that full-wave rectifies the AC power generated in the coil 20, a limiter unit 80 that limits the voltage of the power that has been full-wave rectified by the bridge rectification unit 110, and a predetermined power. The power supply unit 130 to be supplied, the diode 140 that supplies the power supplied by the power supply unit 130 only in a certain direction, and the electric double layer that stores the power limited in voltage by the limiter unit 80 and the power supplied by the power supply unit 130 The capacitor 150, the light emitting diode 170 that emits light when supplied with predetermined power, the resistor 200 that adjusts the current supplied to the light emitting diode 170, and the switch unit 160 that switches the current supply path to the light emitting diode 170 Consists of

  As shown in FIG. 3, the bridge rectifier 110 includes rectifier diodes 111, 112, 113, and 114. The cathode of the rectifier diode 111 and the anode of the rectifier diode 114 are connected to one of the output terminals of the coil 20. The cathode of the rectifier diode 112 and the anode of the rectifier diode 113 are connected to the other output terminal of the coil 20. As will be described later, an alternating induction current is generated in the coil 20 by the reciprocating movement of the mover 13. The bridge rectification unit 110 can perform full-wave rectification of the AC induced current generated in the coil 20.

  The limiter unit 80 includes a Zener diode 82. The cathode of the Zener diode 82 is connected to the output terminal of the bridge rectifying unit 110, and the anode is connected to the input terminal of the bridge rectifying unit 110. When the voltage between the cathode and anode of the Zener diode 82 is equal to or higher than a predetermined voltage (for example, 5 V), the Zener diode 82 passes power from its cathode to the anode. Thereby, the upper limit of the voltage stored in the electric double layer capacitor 150 can be limited.

  The electric double layer capacitor 150 is connected in parallel with the Zener diode 82. More specifically, one terminal 150 </ b> A of the electric double layer capacitor 150 is connected to the cathode of the Zener diode 82. The other terminal 150 </ b> B of the electric double layer capacitor 150 is connected to the anode of the Zener diode 82. The electric double layer capacitor 150 can immediately store the power limited by the limiter unit 80 and the power supplied by the power supply unit 130 described later. In addition, the electric double layer capacitor 150 can supply power stored by itself to a light emitting diode 170 described later by switching a switch unit 160 described later. In the present embodiment, as an example, the capacity of the electric double layer capacitor 150 is 0.5 F.

  The power supply unit 130 includes a detachable battery, and is connected in parallel with the electric double layer capacitor 150 via a first connection terminal 160B of the switch unit 160 described later and a diode 140 described later. More specifically, the terminal on the anode side of the power supply unit 130 is connected to the terminal 150A via the first connection terminal 160B and the diode 140. The cathode side terminal of the power supply unit 130 is connected to the terminal 150B. Thereby, the power supply part 130 can supply electric power to the electric double layer capacitor 150 through the first connection terminal 160B. Further, as will be described later, the power supply unit 130 is also connected to the light emitting diode 170 via the first connection terminal 160B. That is, the power supply unit 130 can supply power to the light emitting diode 170 via the first connection terminal 160B. In the present embodiment, the voltage of the power supply unit 130 is 3V.

  As shown in FIG. 3, in the electric circuit 100, the switch unit 160 includes a non-conduction terminal 160A, a first connection terminal 160B, a second connection terminal 160C, and a movable terminal 160D. The movable terminal 160D can be connected to the non-conduction terminal 160A, the first connection terminal 160B, or the second connection terminal 160C. Switching of the connection point of the movable terminal 160D is interlocked with the slide of the movable part 162 described above. That is, when the movable part 162 is at the non-conductive position 162A (see FIG. 2), the movable terminal 160D is connected to the non-conductive terminal 160A. And when the movable part 162 slides to the 1st switching position 162B (refer FIG. 2), as shown in FIG. 4, movable side terminal 160D is connected to the 1st connection terminal 160B. In this case, the switch unit 160 switches to the first stage. Further, when the movable portion 162 slides to the second switching position 162C (see FIG. 2), the movable terminal 160D is connected to the second connection terminal 160C as shown in FIG. In this case, the switch unit 160 is switched to the second stage.

  As shown in FIG. 3, the first connection terminal 160 </ b> B is connected to the terminal on the anode side of the power supply unit 130. The second connection terminal 160C is connected to the terminal 150A. The movable terminal 160D is connected to the anode of the diode 140. The cathode of the diode 140 is connected to the terminal 150A. The movable terminal 160D is also connected to the anode of a light emitting diode 170 described later.

  The light emitting diode 170 has its own anode connected to the movable terminal 160D and its cathode connected to the resistor 200. The resistor 200 is connected to the cathode side terminal of the power supply unit 130. The resistor 200 is a current control resistor for keeping the current supplied to the light emitting diode 170 within a predetermined range.

  Next, how to use the flashlight 1 will be described. As shown in FIGS. 2 and 3, when the flashlight 1 is not used, the movable portion 162 of the switch portion 160 is in the non-conductive position 162A, and the movable terminal 160D is connected to the non-conductive terminal 160A.

  As shown in FIG. 2, when the use of the flashlight 1 is started, the movable portion 162 at the non-conduction position 162A is slid forward (in the direction of arrow A shown in FIG. 2) to the first switching position 162B. As shown in FIG. 4, the movable terminal 160D is connected to the first connection terminal 160B in conjunction with the slide of the movable portion 162. Thereby, the switch unit 160 is switched to the first stage, and the power source unit 130 can supply power to the electric double layer capacitor 150 and the light emitting diode 170. Immediately after the switch unit 160 is switched, the power supply unit 130 supplies power to the electric double layer capacitor 150 via the diode 140. As a result, the electric double layer capacitor 150 stores the power required for light emission of the light emitting diode 170 in about several seconds.

  When power is stored in the electric double layer capacitor 150, the power supply unit 130 supplies power to the light emitting diode 170. Part of the power supplied by the power supply unit 130 is consumed by the resistor 200. Therefore, predetermined power suitable for light emission is supplied to the light emitting diode 170, and as a result, the light emitting surface 172 emits light. As described above, the light emitting surface 172 is on the inner peripheral surface side of the reflecting mirror 9 (see FIG. 1). Therefore, the light generated from the light emitting surface 172 passes through the transparent member 12 while being reflected by the inner peripheral surface of the reflecting mirror 9. Thereby, the user of the flashlight 1 can illuminate a desired place.

  As shown in FIG. 2, when the electric double layer capacitor 150 stores electric power necessary for light emission of the light emitting diode 170, the movable portion 162 at the first switching position 162B is moved forward (to the second switching position 162C). Slide in the direction of arrow A shown in FIG. As shown in FIG. 5, in conjunction with the sliding of the movable part 162, the movable terminal 160D connected to the first connection terminal 160B is connected to the second connection terminal 160C. Thereby, the switch unit 160 is switched from the first stage to the second stage. As a result, the electric double layer capacitor 150 supplies the power stored by itself to the light emitting diode 170 via the second connection terminal 160C. Part of the electric power supplied by the electric double layer capacitor 150 is consumed by the resistor 200. Therefore, predetermined power suitable for light emission is supplied to the light emitting diode 170, and as a result, the light emitting surface 172 emits light. Therefore, even if the switch unit 160 is switched from the first stage to the second stage, the light emitting surface 172 of the light emitting diode 170 continues to emit light. That is, the user of the flashlight 1 can continuously illuminate a desired place. In this case, the electric power stored in the electric double layer capacitor 150 is gradually reduced by its own discharge.

  Next, with reference to FIG. 1, a method for generating electric power in the coil 20 will be described. The user vibrates the flashlight 1 so that the housing 17 vibrates in the axial direction. Thereby, the cylindrical member 11, the wall portion 18 </ b> A, and the lid member 19 also vibrate in the axial direction of the cylindrical member 11. Due to the frictional force generated at the contact surface between the movable element 13 and the cylindrical member 11 and the force received when the movable element 13 collides with the wall portion 18 </ b> A or the lid member 19, the movable element 13 also has the cylindrical member 11. Start reciprocating movement in the axial direction. The mover 13 moves in and out of the space in the coil 20 by reciprocating in the axial direction in the cylindrical member 11. The unit magnet 14 always generates a certain amount of magnetic flux. Therefore, when the mover 13 enters and exits the coil 20, the magnetic flux that passes through the unit coils 221, 222, and 223 orthogonally changes. As a result, when the mover 13 repeatedly enters and exits the coil 20, an alternating current is generated in the coil 20.

  As shown in FIG. 5, the alternating current generated from the coil 20 is full-wave rectified by the bridge rectification unit 110, is then voltage limited by the limiter unit 80, and then stored in the electric double layer capacitor 150. That is, the coil 20 supplies the electric power generated by the vibration power generation unit 2 to the electric double layer capacitor 150. Therefore, even if the switch unit 160 is switched to the second stage and the electric power stored in the electric double layer capacitor 150 is gradually reduced as described above, the coil 20 compensates for the gradually reduced electric power. As a result, the light emitting surface 172 of the light emitting diode 170 continuously emits light. Therefore, the user can continuously illuminate a desired place by vibrating the flashlight 1 in the axial direction of the housing 17 even after the switch unit 160 of the flashlight 1 is switched to the second stage. it can. In the state where electric power is sufficiently stored in the electric double layer capacitor 150, the coil 20 can also supply power to the light emitting diode 170 to cause the light emitting surface 172 to emit light. Further, when the switch unit 160 is switched to the first stage (see FIG. 4), the coil 20 supplies power to the electric double layer capacitor 150 even when the flashlight 1 is vibrated. You can also

  As described above, when the user starts using the flashlight 1, the user switches the switch unit 160 in the order of the first stage and the second stage. When the switch unit 160 is switched to the first stage, the electric double layer capacitor 150 immediately stores electric power, and then the light emitting diode 170 emits light by the electric power supplied by the power supply unit 130. When the switch unit 160 is switched to the second stage, the light emitting diode 170 continuously emits light using the power stored in the electric double layer capacitor 150 and the power supplied from the vibration power generation unit 2. Therefore, when the user starts using the flashlight 1, the user can save time and effort to vibrate the flashlight 1 in the front-rear direction and generate power in the vibration power generation unit 2 in order to store the electric double layer capacitor 150. it can. That is, the user can cause the light emitting surface 172 of the flashlight 1 to emit light immediately after starting to use the flashlight 1.

  In addition, when the user switches the switch unit 160 to the first stage, the light emitting surface 172 emits light after the electric double layer capacitor 150 has sufficiently stored electric power. Therefore, the user can immediately visually recognize from the light emission of the light emitting surface 172 that electric power is sufficiently stored in the electric double layer capacitor 150.

  In addition, the electric double layer capacitor 150 that is a power storage unit of the flashlight 1 has little deterioration in characteristics even when it is repeatedly charged and discharged. Therefore, the flashlight 1 is excellent in reliability and durability and can be used for a long time. In addition, with an electric double layer capacitor, the time required for power storage is extremely short, and the power storage capacity can be increased.

  When the use of the flashlight 1 is started, the switch unit 160 can be switched in the order of the first stage and the second stage. Accordingly, when the user starts using the flashlight 1, first, the electric power supplied from the power supply unit 130 is stored in the electric double layer capacitor 150, and then the electric power stored in the electric double layer capacitor 150 is stored in the light emitting diode 170. In contrast, the operation of supplying it can be performed without hesitation. That is, high operability of the flashlight 1 can be realized.

  The present invention can be variously modified. The shapes of the housing 17 and the cylindrical member 11 are not limited to a cylindrical shape. The shapes of the housing 17 and the cylindrical member 11 may be other polygonal cylindrical shapes such as an elliptical cylindrical shape and a rectangular cylindrical shape, for example. The material of the housing 17 may be a metal such as copper, aluminum, or brass as long as it is a non-magnetic material, or may be a magnetic material such as iron or stainless steel. Further, the shape of the mover 13 is not limited to a cylindrical shape, but it is preferable that the mover 13 has the same cross-sectional shape as that in the cylindrical member 11. Further, the mover 13 may be configured to include two or more unit magnets 14.

  Further, in the electric circuit 100, an electrolytic capacitor in which its own anode side terminal is connected to the output terminal of the bridge rectifying unit 110 and its own cathode side terminal is connected to the input terminal of the bridge rectifying unit 110 is provided. A protective resistor may be provided between the anode terminal of the capacitor and the Zener diode 82. By smoothing the power supplied from the bridge rectifier 110 with an electrolytic capacitor and limiting the current with a protective resistor, the Zener diode 82 and the electric double layer capacitor 150 can be protected from overcurrent and overvoltage.

  Further, the electric double layer capacitor 150 can be replaced with a secondary battery or the like that stores electric power, such as an electrolytic capacitor. Further, as long as the electric power generated in the coil 20 is equal to or lower than a predetermined voltage, the limiter unit 80 may be omitted. In addition, if the power supplied to the light emitting diode 170 is in a range suitable for causing the light emitting surface 172 to emit light, the resistor 200 may be omitted. Further, the switch unit 160 is not limited to a slide switch that is switched when the movable unit 162 slides, and may be a push button switch or the like. In this case, if the button is pressed, the switch unit 160 is switched in the order of the first stage and the second stage described above.

  In the present embodiment, the light emitting diode 170 is the “light emitting portion”, the non-conductive terminal 160A is the “non-conductive point”, the first connection terminal 160B is the “first connection point”, and the second connection terminal 160C. Corresponds to the “second connection point”, the vibration power generation unit 2 corresponds to the “manual power generation unit”, and the diode 140 corresponds to the “backflow prevention diode”.

2 Vibration power generation unit 130 Power supply unit 140 Diode 150 Electric double layer capacitor 160 Switch unit 160A Non-conduction terminal 160B First connection terminal 160C Second connection terminal 170 Light emitting diode

Claims (2)

A light emitting unit that emits light when power is supplied;
A switch unit connected to the light emitting unit and connectable to any of the non-conduction point, the first connection point, and the second connection point;
A power supply for supplying predetermined power and connected to the first connection point;
Manually generating power, and a manual power generation unit connected to the second connection point;
A power storage unit that stores power generated by the manual power generation unit, and stores power supplied by the power source unit via a backflow prevention diode when the switch unit is connected to the first connection point. ,
The switch unit can be connected in the order of the non-conduction point, the first connection point, the second connection point,
Flashlight said switch unit when it is connected to the second connection point, power said manual power generator unit has power and the power storage unit has power storage, characterized in that it is supplied to the light emitting portion.   The flashlight according to claim 1, wherein the power storage unit is an electric double layer capacitor.

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