External power supply and camera system

Abstract

To provide an external power supply which does not cut off power supply to a camera at the replacement of a battery.SOLUTION: An external power supply 1 which is attachable and detachable to / from a camera 100 includes: a body part 5 having an internal space 4; a folder part 50 having a housing part 51 which can be inserted and extracted to / from the internal space 4 through an insertion port 6 provided on the body part 5, and when inserted into the internal space 4, can accommodate two or more batteries 40 in juxtaposition from the insertion port 6 side toward the back side; a folder lock part 10 provided on the body part 5 or the folder part 50 to operate a lock state of the folder part 50 to the body part 5; a battery lock part 54 provided on either a first battery 40A, which is arranged to face the insertion port 6, among the batteries 40 or the folder part 50 to operate a lock state of the first battery 40A to the folder part 50.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to an external power supply device and a camera system. [Background technology]

[0002] Conventionally, there is known an external power supply device with a vertical grip function that can accommodate multiple batteries and that allows a battery to be removed from a battery insertion section of a camera and inserted into the battery insertion section (see Patent Document 1). In such an external power supply device, when replacing the installed battery, the power supply to the camera is cut off. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-071175 A Summary of the Invention

[0004] The external power supply device detachable from a camera of a first aspect comprises: a main body portion having an internal space; a folder portion having a storage portion that can be inserted and removed from the internal space through an insertion opening provided in the main body portion and that can store a first battery and a second battery side by side from the insertion opening side toward the back side when inserted into the internal space; a folder lock portion provided in the main body portion or the folder portion and that operates a lock state of the folder portion relative to the main body portion; and a battery lock portion provided in the first battery or the folder portion and that operates a lock state of the first battery in the folder portion. The external power supply device detachable from a camera comprises: a main body portion having an internal space; A connection section that comes into contact with a contact to supply power to the camera is provided protruding outward from the main body section, and includes a push-out section that is provided on the main body section or the folder section and pushes the folder section out of the main body section when the folder section is locked to the main body section by a folder lock section that operates the locked state of the folder section to the main body section, the push-out section is used as a signal transmission section from the main body section to the connection section, and when the first battery is stored in the folder section and the folder section is in a locked state to the main body section, when the lock of the first battery to the folder section by the battery lock section is released, the first battery can be removed from the insertion opening. When the first battery is removed from the insertion opening while the first battery and the second battery are stored in the folder section, power is supplied to the camera from the second battery. The structure was as follows.

[0006] Moreover, the camera system of the third aspect is configured to include a camera and the above-described external power supply device. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a front view of a camera system 101 in which an external power supply device 1 of an embodiment is attached to a camera 100. [Diagram 2] 1 is a perspective view of the external power supply device 1 removed from the camera 100, viewed diagonally from above on the front side, with a cover 20 (described later) open. [Diagram 3] 2 is a perspective view of a battery 40 held in a folder portion 50. FIG. [Figure 4] FIG. 2 is a perspective view showing the internal space 4 of the main body 5, with the folder 50 holding the battery 40 inserted into the internal space 4. [Diagram 5] FIG. 2 is a perspective view showing the internal space 4 of the main body 5, illustrating a state in which the folder portion 50 is inserted into the internal space 4 with the battery 40 removed from the folder portion 50. [Figure 6] FIG. 2 is a perspective view showing the internal space 4 of the main body 5 with the folder 50 removed from the internal space 4. [Figure 7] FIG. 2 is a diagram showing a folder lock unit 10. [Figure 8] FIG. [Figure 9] 1 is a cross-sectional view of a portion where a battery lock portion 54 is provided, showing a state in which the first battery 40A is held by the battery lock portion 54. FIG. [Figure 10] 1 is a cross-sectional view of a portion where a battery lock section 54 is provided, showing a state in which the first battery 40A has been unlocked by the battery lock section 54. FIG. [Figure 11] 8, showing the state in which the first battery 40A is locked by the battery lock portion 54. FIG. [Figure 12] This is a cross-sectional view of the folder section 50 taken along line XX in FIG. 8, showing the state in which the first battery 40A has been unlocked by the battery lock section 54 and moved forward. [Figure 13] 1 is a block diagram of an external power supply device 1. FIG. [Figure 14] 4 is a flowchart illustrating the operation of an MCU 8 in an external power supply device 1. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Fig. 1 is a front view of a camera system 101 in which an external power supply device 1 of an embodiment is attached to a camera 100. Fig. 2 is a perspective view of the external power supply device 1 removed from the camera 100, viewed diagonally from above on the front side, showing a state in which a lid portion 20, which will be described later, is open. In the following description, horizontal position shooting refers to a case where the photographer shoots a landscape image with the optical axis horizontal, the side where release button 102 of camera 100 is located in this state is referred to as the top and the opposite side as the bottom, the subject side in the optical axis direction is referred to as the front and the photographer side as the back, and the direction perpendicular to the up-down direction and the optical axis direction, when viewed from the front (front side) shown in Figure 1, is referred to as the right or front, and the left side is referred to as the left or rear. Also, vertical position shooting refers to a case where the photographer shoots a portrait image with the optical axis horizontal.

[0009] (External power supply 1) In this embodiment, the external power supply 1 can store two batteries 40, is attached to the underside of the camera 100, and has a design shape that makes it one with the camera 100 when attached to the camera 100. The external power supply 1 has a vertical position grip section 2 that protrudes from the front side and serves as a grip when shooting in a vertical position. A release button 3 for shooting in a vertical position is located on the left side of the external power supply 1.

[0010] The external power supply device 1 comprises a main body 5 having an internal space 4, a folder section 50 capable of storing a battery 40 and capable of being inserted into and removed from the internal space 4 through an insertion port 6 provided on the front side of the main body 5, and a connection section 80 protruding upward from the upper rear surface of the main body 5.

[0011] (Battery 40) 3 is a perspective view of battery 40 held in folder section 50. Battery 40 has contacts 41 for supplying power provided on one longitudinal side. Battery 40 is held in folder section 50 and can be stored in internal space 4 of external power supply device 1, and can also be inserted into camera-side battery storage section 103 in camera 100, shown by dotted lines in FIG.

[0012] (Connection part 80) Connection part 80 is a part that is inserted into camera-side battery storage part 103 of camera 100 in order to supply power to camera 100, and has contacts 81 similar to those of battery 40. When connection part 80 is inserted into camera-side battery storage part 103 of camera 100, contacts 81 come into contact with contacts (not shown) provided in camera-side battery storage part 103 of camera 100, enabling power to be supplied from external power supply device 1 to camera 100.

[0013] (Main body 5) As shown in FIG. 2, a screw portion 7 protrudes from the center of the upper surface of the main body portion 5, and with the connection portion 80 inserted into the camera side battery storage portion 103 of the camera 100, the screw portion 7 is tightened into a screw hole (not shown) on the underside of the camera 100, thereby fixing the external power supply device 1 to the camera 100.

[0014] Fig. 4 is a perspective view showing the internal space 4 of the main body 5, showing the state in which the folder part 50 holding the battery 40 is inserted into the internal space 4. Fig. 5 is a perspective view showing the internal space 4 of the main body 5, showing the state in which the folder part 50 is inserted into the internal space 4 with the battery 40 removed from the folder part 50. Fig. 6 is a perspective view showing the internal space 4 of the main body 5, showing the state in which the folder part 50 is removed from the internal space 4.

[0015] (Interior space 4) An insertion opening 6 that allows the folder unit 50 to be inserted into and removed from the internal space 4 of the main body unit 5 is provided in the internal space 4 of the main body unit 5. The insertion opening 6 is provided on the front side of the main body unit 5, opposite to the rear side on which the release button 102 is located. An openable and closable lid portion 20 is attached to the insertion opening 6. The lid portion 20 can be opened and closed by operating an opening / closing operation portion 21 shown in FIG.

[0016] (Folder Extrusion Spring 15) 5 and 6, a folder push-out spring 15 and a spring holding plate 16 are provided on the rear (deep) side of the internal space 4. The folder push-out spring 15 is conical in shape, with the large diameter side held by the spring holding plate 16 and the small diameter side extending to the front side. The large diameter end of the folder push-out spring 15 held by the spring holding plate 16 extends upward and functions as a conductive part that is electrically connected to the MCU (memory control unit) 8, which is the control unit within the external power supply device 1. When the folder part 50 is inserted into the internal space 4, the small diameter side of the folder pushing spring 15 extending forward comes into contact with the rear surface of the folder part 50 and functions as a pushing part that pushes the folder part 50 forward. As shown in Figures 4 and 5, when the folder part 50 is positioned in the internal space 4, the folder extrusion spring 15 is in a compressed state, and when the folder part 50 is not positioned in the internal space 4, as shown in Figure 6, the folder extrusion spring 15 is in an extended, natural state.

[0017] (Folder Lock Part 10) A folder lock section 10 for controlling the locked state of the folder section 50 relative to the main body section 5 is provided on the lower surface on the front side of the internal space 4. FIG. The folder locking part 10 includes an extending part 11 extending along the bottom surface 5a of the internal space 4, and a pressing part 13 extending upward from the front end of the extending part 11. The rear surface of the pressing part 13 is a folder pressing surface 13a. The extending part 11 is fixed with a screw so as to be spaced a certain distance from the bottom surface 5a of the main body part 5.

[0018] 4 and 5, when the folder part 50 is disposed inside the main body part 5, the rear surface of the folder part 50 is biased forward by the folder pushing spring 15. Meanwhile, the front surface of the folder part 50 is pressed by the folder pressing surface 13a, so that the folder part 50 is locked in the internal space 4. When the pressing portion 13 is pressed downward, the front side of the extension portion 11 is bent downward, the folder pressing surface 13a is released from the front surface of the folder portion 50, and the lock on the front surface of the folder portion 50 is released. Then, the folder portion 50 is biased by the folder pushing spring 15 and moves to the front side.

[0019] (Folder section 50) 8 is a perspective view of the folder unit 50. The folder unit 50 has a rectangular bottom surface portion 55A, side walls 55B extending from both longitudinal sides of the bottom surface portion 55A, and a storage section 51 capable of storing two or more batteries 40 lined up in the longitudinal direction. In this embodiment, the number of batteries 40 that can be stored in the storage section 51 is two, and the storage section 51 includes a first storage section 51A on the front side in the longitudinal direction and a second storage section 51B on the rear side (deep side). In the following description, the battery 40 stored in the first storage section 51A is referred to as the first battery 40A, and the battery 40 stored in the second storage section 51B is referred to as the second battery 40B. A partition 52 is disposed between the first storage section 51A and the second storage section 51B. A first contact 53A is disposed on the front surface of the partition 52 behind the first storage section 51A, and a second contact 53B and a second battery biasing spring 58 are disposed on the rear surface of the partition 52 behind the second storage section 51B.

[0020] (Battery lock part 54) A battery lock section 54 is provided on the underside of the front of the first storage section 51A in the folder section 50 to adjust the locking state of the first battery 40A placed in the first storage section 51A in the folder section 50. Figure 9 is a cross-sectional view of the portion where the battery lock part 54 is provided, showing the state in which the first battery 40A is locked by the battery lock part 54. Figure 10 is a cross-sectional view of the portion where the battery lock part 54 is provided, showing the state in which the first battery 40A is unlocked by the battery lock part 54.

[0021] The bottom surface 55A of the folder 50 has an upper plate 55a and a lower plate 55b. The battery lock 54 is disposed in a notch 55c provided in the front side of the upper plate 55a. The battery lock 54 includes a pressing portion 54a and a cylindrical spring holder 54b extending downward from the lower surface of the pressing portion 54a. The upper side of a cylindrical coil spring, a battery lock spring 54c, is inserted into the outer periphery of the spring holder 54b, and the lower end of the battery lock spring 54c is disposed on the upper surface of the cylindrical lower plate 55b. When the battery lock spring 54c is in its natural state, the spring holding portion 54b is not in contact with the lower plate portion 55b. When the pressing portion 54a of the battery lock portion 54 is pressed downward, the battery lock spring 54c is compressed against the spring force.

[0022] (Battery ejection part 56) Figure 11 is a cross-sectional view of the folder unit 50 taken along line XX in Figure 8, and shows the state in which the first battery 40A is locked by the battery lock unit 54, similar to Figure 9. Figure 12 is a cross-sectional view of the folder unit 50 taken along line XX in Figure 8, and shows the state in which the first battery 40A has been released from the lock by the battery lock unit 54 and moved forward, similar to Figure 10.

[0023] The folder section 50 is provided with a battery ejection section 56 that ejects the first battery 40A placed in the first storage section 51A. The battery ejection section 56 has a battery contact surface 56a that comes into contact with the rear surface of the first battery 40A, a rear spring engagement section 56b, a sensor contact surface 56c, and a slide section 56d.

[0024] (Battery contact surface 56a) The battery contact surface 56a is a surface facing forward and protruding from the bottom surface portion 55A into the first storage portion 51A at the rear side of the first storage portion. When the first battery 40A is stored in the first storage portion 51A, the battery contact surface 56a comes into contact with the rear surface of the first battery 40A. Meanwhile, a long hole 55d extending along the longitudinal direction is provided in the upper plate portion 55a of the folder portion 50. The battery abutting surface 56a is slidable back and forth within the long hole 55d.

[0025] (Rear spring engagement portion 56b) The rear spring engagement portion 56b of the battery ejection portion 56 extends from the underside of the battery contact surface 56a between the upper plate portion 55a and the lower plate portion 55b of the bottom surface portion 55A. Meanwhile, a front spring engagement portion 55f is provided on the front side of the first storage portion 51A, extending between the upper plate portion 55a and the lower plate portion 55b of the bottom surface portion 55A. A battery push-out spring 57 is suspended between the front spring engagement portion 55f and the rear spring engagement portion 56b.

[0026] (Slide portion 56d) The slide portion 56d is a thin rod-shaped member that is formed behind the battery contact surface 56a and extends in the front-rear direction. Meanwhile, a groove 55e extending in the front-rear direction is provided on the lower surface of the upper plate portion 55a of the bottom surface portion 55A. The slide portion 56d is slidable in the front-rear direction along the groove 55e.

[0027] (Sensor contact surface 56c) The sensor contact surface 56c extends below the battery contact surface 56a and between the upper plate portion 55a and the lower plate portion 55b rearward of the rear spring engagement portion 56b. Meanwhile, a battery installation / removal detector (detector) 59 is attached to the underside of the upper plate 55a. The battery installation / removal detector 59 has a sensor portion 59a extending forward, and detects the presence of the first battery 40A when the sensor portion 59a comes into contact with and is pressed against the sensor contact surface 56c. When the pressure of the sensor portion 59a by the sensor contact surface 56c is released, it detects that the first battery 40A has been removed.

[0028] An electrical wiring extends rearward from the battery insertion / removal detector 59 , and the electrical wiring extends to the rear surface of the folder portion 50 . In addition, the folder extrusion spring 15 located at the rear of the internal space 4 functions as a conductive part that is conductive to the MCU 8 in the external power supply device 1, as described above, and is connected to the MCU (memory control unit) 8 in the external power supply device 1. When the folder part 50 is stored in the internal space 4, the rear surface of the folder part 50 comes into contact with the folder push-out spring 15. Then, a signal indicating the presence or absence of the first battery 40A detected by the battery installation / removal detection part 59 is transmitted to the MCU 8 from the electrical wiring extending rearward from the battery installation / removal detection part 59 via the folder push-out spring 15.

[0029] (External power supply unit 1 operation) Fig. 13 is a block diagram of the external power supply device 1. The external power supply device 1 includes the above-mentioned MCU 8, a battery attachment / detachment detection unit 59, and a battery switching unit 9. Fig. 14 is a flowchart explaining the operation of the MCU 8 in the external power supply device 1. The operation of the external power supply device 1 of the embodiment will be explained below.

[0030] (Attaching the battery 40 to the folder portion 50) First, the batteries 40 are inserted into the first storage section 51A and the second storage section 51B of the folder section 50 in Fig. 8. The second battery 40B stored in the second storage section 51B is biased by the second battery biasing spring 58 and held within the second storage section 51B.

[0031] When storing the first battery 40A in the first storage section 51A, the rear surface of the first battery 40A is brought into contact with the battery abutment surface 56a of the battery ejection section 56 located slightly forward of the rear end of the first storage section 51A, which is a position corresponding to the natural length of the battery ejection spring 57 in its natural state. At this time, the pressing portion 54a of the battery lock portion 54 is pressed downward by the bottom surface of the first battery 40A, causing the battery lock spring 54c to be compressed against the spring force. When the first battery 40A is pushed backward against the spring force of the battery push-out spring 57, the slide portion 56d slides backward along the groove portion 55e, and the battery contact surface 56a also moves backward along the long hole 55d.

[0032] When the front surface of the first battery 40A moves rearward beyond the pressing portion 54a of the battery lock portion 54, the pressure on the pressing portion 54a by the first battery 40A is released, and the pressing portion 54a is lifted by the spring force of the battery lock spring 54c. Then, the front surface of the first battery 40A is pressed by the rear surface of the pressing portion 54a of the battery lock portion 54 as shown in FIG. 9, and the first battery 40A is locked in the first storage portion 51A.

[0033] At this time, as shown in FIG. 11, the sensor abutment surface 56c of the battery ejection portion 56 abuts against the sensor portion 59a of the battery installation / removal detection portion 59, and the sensor portion 59a is pressed backward, thereby causing the battery installation / removal detection portion 59 to detect the installation of the first battery 40A.

[0034] (Attaching the folder part 50 to the internal space 4) Next, the folder part 50 with the two batteries 40 attached thereto is inserted into the internal space 4 of the main body part 5. Note that the folder part 50 may be attached to the internal space 4 before the batteries 40 are attached to the folder part 50. When the insertion of the folder part 50 into the internal space 4 of the main body part 5 is started, the pressing part 13 of the folder lock part 10 shown in FIG. 6 etc. comes into contact with the bottom surface part 55A of the folder part 50 and is pressed downward, bending the extension part 11. This makes it possible to insert the folder part 50 into the internal space 4.

[0035] When the folder part 50 is inserted into the internal space 4, the rear surface of the folder part 50 comes into contact with the folder pushing spring 15 arranged at the back of the internal space 4, and the folder pushing spring 15 is compressed. When the front surface of the folder portion 50 exceeds the folder pressing surface 13 a on the rear surface of the pressing portion 13 , the pressing portion 13 is lifted by the spring force of the folder pushing spring 15 . 5, the front surface of the folder portion 50 is pressed by the folder pressing surface 13a, and the folder portion 50 is locked in the internal space 4. Then, the lid portion 20 of the main body portion 5 is closed.

[0036] At this time, the rear end of the folder part 50 comes into contact with the folder push-out spring 15, compressing the folder push-out spring 15. As a result of the rear end of the folder part 50 coming into contact with the folder push-out spring 15, the detection signal of the first battery 40A by the battery removal detection part 59 is transmitted to the folder push-out spring 15, and then sent from the folder push-out spring 15 to the MCU 8.

[0037] In this state, as shown in step S1 of FIG. 12, the MCU 8 turns on the FET (Field effect transistor) 1 and turns off the FET 2 of FIG. 11, and supplies power to the camera 100 from the first battery 40A. In this embodiment, the first battery 40A and the second battery 40B are stored in the folder portion 50, and if there is any power remaining in the first battery 40A, the first battery 40A is used first, and if there is no power left in the first battery 40A, the second battery 40B is used.

[0038] (Removing the first battery 40A from the folder portion 50) Assume that power continues to be supplied to the camera 100 from the first battery 40A and the power of the first battery 40A becomes low. At this time, the external power supply device 1 of the embodiment is attached to the camera 100, the folder section 50 is inserted inside, and the second battery 40B is stored in the second storage section 51B of the folder section 50, and only the first battery 40A can be removed from the folder section 50.

[0039] The procedure for removing only the first battery 40A from the folder section 50 is as follows: First, the opening / closing operation section 21 is operated to open the lid section 20 of the main body section 5 and the insertion opening 6 is exposed. Next, when the pressing portion 54a of the battery lock portion 54 provided at the insertion opening 6 is pressed downward against the spring force of the battery lock spring 54c, the lock on the front surface of the first battery 40A by the pressing portion 54a is released. Then, the battery contact surface 56a of the battery ejection portion 56, which is in contact with the rear surface of the first battery 40A, moves forward due to the spring force of the battery ejection spring 57, thereby ejecting the first battery 40A forward.

[0040] At this time, the sensor contact surface 56c of the battery ejection portion 56 also moves forward together with the battery contact surface 56a, so that the sensor contact surface 56c moves away from the sensor portion 59a of the battery removal detection portion 59, thereby causing the battery removal detection portion 59 to detect the removal of the first battery 40A.

[0041] As shown in step S2 of FIG. 12, when removal of the first battery 40A is detected (S2, YES), the MCU 8 proceeds to step S3 to turn on FET2 in FIG. 11, and then proceeds to step S4 to turn off FET1. As a result, power is supplied to the camera 100 from the second battery 40B as shown in step S5. It should be noted that steps S3 to S5 are performed until the first battery 40A is completely removed from the folder portion 50.

[0042] Then, as shown in step S6, power supply from the second battery 40B continues unless attachment of the first battery 40A is detected (S6, NO). When charging of the first battery 40A is completed and attachment of the first battery 40A to the folder unit 50 is detected in the same manner as described above (step S6, YES), the process returns to step S1.

[0043] (1) As described above, the external power supply device 1 detachable from the camera 100 in the embodiment comprises a main body portion 5 having an internal space 4, a folder portion 50 having a first storage section 51A and a second storage section 51B which can be inserted and removed from the internal space 4 through an insertion opening 6 provided in the main body portion 5 and which, when inserted into the internal space 4, can store the batteries 40 in an order of the first battery 40A and the second battery 40B from the insertion opening 6 side toward the back side, a folder lock section 10 provided in the main body portion 5 for adjusting the locking state of the folder portion 50 relative to the main body portion 5, and a battery lock section 54 provided in the folder portion 50 for adjusting the locking state of the first battery 40A relative to the folder portion 50. The battery lock section 54 can be operated through the insertion opening 6 when the folder section 50 is placed in the storage section 51, and by operating the battery lock section 54, the first battery 40A can be removed from the first storage section 51A while keeping the second battery 40B held in the second storage section 51B.

[0044] Therefore, according to the external power supply device 1 of this embodiment, the first battery 40A can be removed and charged without removing the external power supply device 1 or the internal folder portion 50, and with the second battery 40B still attached. Therefore, the first battery 40A can be charged without interrupting the power supply from the external power supply device 1 to the camera 100, which is known as hot swapping.

[0045] In the embodiment, the folder lock unit 10 for controlling the locked state of the folder unit 50 relative to the main unit 5 is provided on the main unit 5, but the invention is not limited to this and the folder lock unit may be provided on the folder unit. Furthermore, the battery lock unit 54 for controlling the locked state of the first battery 40A in the folder unit 50 is provided on the folder unit 50, but this is not limiting, and the battery lock unit may be provided on the battery.

[0046] (2) In camera 100, connection section 80 is inserted into camera-side battery storage section 103 provided with contacts and protrudes outward from main body 5 to supply power to the camera upon contact with the contacts.

[0047] The connection section 80 is inserted into a camera-side battery storage section 103 of the camera 100 and connected to a contact point within the camera-side battery storage section 103 , thereby being connected to the camera 100 . In other words, there is no need to provide contacts on the camera 100, for example on its underside, and furthermore, there is no need to provide a switch on the camera 100 to select whether power is supplied from a battery stored in the camera 100 or from an external power supply device. This allows the camera to be made smaller, and also reduces power consumption due to switches within the camera.

[0048] (3) The folder portion 50 is provided with a folder push-out spring 15 that pushes the folder portion 50 out of the insertion opening 6 when the lock of the folder portion 50 to the main body portion 5 by the folder locking portion 10 is released, and the folder push-out spring 15 is used as a signal transmission portion that transmits a signal from the main body portion 5 to the connection portion 80.

[0049] In other words, the folder ejection spring 15 does not require the provision of additional wiring to transmit the attachment state of the first battery 40A to the MCU 8. This results in good space efficiency.

[0050] (4) The release button 3 is provided on the side of the main body 5 opposite to the side where the insertion opening 6 is provided.

[0051] That is, since the external power supply device 1 of the embodiment has the release button 3 in a different position from the camera 100, it can be used as a vertical grip separate from the horizontal position shooting of the camera 100.

[0052] (5) The external power supply device 1 of the embodiment includes a battery installation / removal detection unit 59 that detects the installation / removal of the first battery 40A, and a control unit that selects the first battery 40A and supplies power to the camera when multiple batteries 40 are placed in the storage unit 51.When the battery installation / removal detection unit 59 detects the removal of the first battery 40A, the control unit switches the source of power supply to the camera 100 to the second battery 40B other than the first battery 40A.

[0053] In other words, power is consumed from the removable first battery 40A first, so power consumption from the second battery 40B is reduced, allowing hot swapping to continue. [Explanation of symbols]

[0054] 1: external power supply, 2: vertical grip section, 3: release button, 4: internal space, 5: main body section, 5a: underside, 6: insertion port, 7: screw section, 8: MCU (control section), 9: battery switching section, 10: folder lock section, 11: extension section, 13: pressing section, 13a: folder holding surface, 15: folder push-out spring (pushing section) (signal transmission section), 16: spring retaining plate, 20: lid section, 21: opening / closing operation section, 40: battery, 40A: first battery, 40B: second battery, 41: contact, 45a: battery contact surface, 50: folder section, 51: storage section, 51A: first storage section, 51B: second storage section, 52: partition section, 53A: first contact, 53B: second Contact, 54: battery lock portion, 54a: pressing portion, 54b: spring holding portion, 54c: battery lock spring, 55A: bottom surface portion, 55B: side wall portion, 55a: upper plate portion, 55b: lower plate portion, 55c: notch portion, 55d: long hole, 55e: groove portion, 55f: front spring engagement portion, 56: battery push-out portion, 56a: battery abutment surface, 56b: rear spring engagement portion, 56c: sensor abutment surface, 56d: slide portion, 57: battery push-out spring, 58: second battery energizing spring, 59: battery removal detection portion (detection portion), 59a: sensor portion, 80: connection portion, 81: contact, 100: camera, 101: camera system, 102: release button, 103: camera side battery storage portion

Claims

1. A main body portion having an internal space; a holder section having a storage section that can be inserted into and removed from the internal space through an insertion opening provided in the main body section and that can store a first battery and a second battery side by side from the insertion opening side toward the back side when inserted into the internal space; a folder lock unit provided on the main body unit or the folder unit and configured to operate a lock state of the folder unit relative to the main body unit; a battery lock unit that is provided on the first battery or the folder unit and that operates a lock state of the first battery in the folder unit, An external power supply device that is detachable from a camera, a connection section that is inserted into a camera-side battery storage section provided with contacts in the camera and that contacts the contacts to supply power to the camera is provided so as to protrude outward from the main body section; a push-out section provided on the main body section or the folder section, which pushes out the folder section to the outside of the main body section when a lock of the folder section to the main body section by a folder lock section that operates a lock state of the folder section to the main body section is released, the extrusion portion is used as a signal transmission portion from the main body portion to the connection portion, when the first battery is housed in the folder section and the folder section is in a locked state relative to the main body section, when the battery lock section releases the lock of the first battery relative to the folder section, the first battery becomes removable from the insertion opening; When the first battery is removed from the insertion opening while the first battery and the second battery are stored in the folder section, power is supplied to the camera from the second battery. External power supply.

2. A release button is provided on the side opposite to the side where the insertion opening is provided in the main body.

2. The external power supply device of claim 1.

3. A detection unit that detects the attachment or detachment of the first battery; a control unit that selects the first battery and supplies power to the camera when a plurality of batteries are arranged in a storage unit that can store the first battery and the second battery, When the detection unit detects the removal of the first battery, the control unit switches a power supply source to the camera to a battery other than the first battery.

3. The external power supply device according to claim 1 or 2.

4. Camera and An external power supply device according to any one of claims 1 to 3; A camera system comprising:

Images