JP5017329B2 - Wireless remote control device - Google Patents

Description

  The present invention relates to a wireless remote control device for remotely operating home appliances such as an air conditioner and a television and other electronic devices.

  Wireless remote control devices that can remotely control air conditioner temperature control, TV channel operation, and the like are widely used. In order to perform remote operation, a power source is required, and a battery is incorporated in a wireless remote control device of household appliances. In order to reduce the frequency of charging or replacing the built-in battery, lithium batteries, which have a low voltage drop until the end of discharge and have a large energy density per unit volume, are attracting attention. Electronic devices such as mobile phones, cameras, and personal computers It is used as a power source.

  However, in general, it is known that a lithium battery may cause a load short circuit path due to liquid intrusion and may cause a chemical reaction with water. Nevertheless, in general, the wireless remote control device of the electronic apparatus is not provided with any means for preventing liquid intrusion other than the housing of the wireless remote control device against the ingress of liquid.

  On the other hand, there is a method of sealing the battery chamber and preventing liquid from entering the lithium battery (see, for example, Patent Document 1). Patent document 1 is disclosing the remote controller for bathrooms which seals the battery accommodating part of a battery chamber with a housing | casing, a battery cover, and packing. The sealed structure ensures that the inside of the battery housing is in a watertight state. According to the method disclosed in Patent Document 1, it is possible to prevent liquid from entering the lithium battery.

JP-A-6-335507

  Patent Document 1 prevents the liquid leaking from the inside of the wireless remote control device from entering the lithium battery in addition to the liquid entering from the outside by completely sealing the battery accommodating portion of the battery chamber.

  However, there is a possibility that the wireless remote control device is deformed due to impact or deterioration, and the sealed structure is destroyed. As a countermeasure, Patent Document 1 selects a complicated structure such as double packing.

  In the case of a wireless remote control device used in the bathroom, there is an environment where liquid enters the wireless remote control device from the outside, but in the case of a wireless remote control device used indoors, liquid may enter the wireless remote control device from the outside. There are few. That is, if only measures against liquid leakage from the inside of the wireless remote control device are taken, the possibility of causing a chemical reaction with the internal short circuit of the lithium battery can be eliminated.

  The object of the present invention is to prevent liquid from entering the lithium battery against liquid leakage from the inside, and even when the wireless remote control device is deformed due to impact or repeated load, the liquid to the battery has a simple structure. It is an object of the present invention to provide a wireless remote control device capable of maintaining the prevention of intrusion of water.

  A casing having an upper surface, a lower surface, an upper end side surface, and a lower end side surface, an operation unit that is located on the upper surface of the casing and that operates an electronic device, and is closer to the upper end side surface than the lower end side surface of the casing A transmitter for transmitting a signal from the operation unit to the electronic device, a battery socket for storing a battery that can be used as a power source in the casing, and a power socket in the casing for use as a power source. A lower surface of the casing that is below the battery socket, and a lower side surface of the lithium battery is lateral to the battery socket. A wireless remote control device positioned in an upper end side direction with respect to a lower end side surface of the housing located at a position.

  When the wireless remote control device is placed on a table or the like so that the lower surface of the casing is in contact with the liquid, the liquid leaking from the battery stored in the battery socket flows into the casing below the battery socket. Since the lower surface of the lithium battery is higher than the lower surface of the housing below the battery socket, liquid can be prevented from entering the lithium battery by the action of gravity.

  Also, when the wireless remote control device is installed in the wireless remote control device housing part on the wall or the like so that the bottom side of the housing is on the bottom, the liquid leaking from the battery stored in the battery socket will be on the side of the battery socket. It flows on the bottom side of a case. Since the lower end side surface of the lithium battery is higher than the lower end side surface of the housing on the side of the battery socket, it is possible to prevent liquid from entering the lithium battery by the action of gravity.

  Furthermore, the distance in the height direction between the lower surface of the housing below the battery socket and the lower surface of the lithium battery is made longer than the amount of change in height due to impact or deterioration, so that it can be moved below the battery socket even if deformed. It is possible to prevent the lower surface of a certain casing from becoming higher than the lower surface of the lithium battery.

  As described above, according to the wireless remote control device of the present invention, the liquid leaked from the battery installed in the battery socket is prevented from entering the lithium battery, and the wireless remote control device is deformed due to impact or deterioration. Even so, the structure for preventing liquid from entering the lithium battery can be maintained with a simple structure.

The block diagram of an air conditioner. The center sectional view of the indoor unit of an air conditioner. The external front view of a wireless remote control device. The external appearance rear view of a wireless remote control device. The wireless remote control device side cross-sectional schematic diagram. The wireless remote control device side cross-sectional schematic diagram. The wireless remote control device side cross-sectional schematic diagram. The wireless remote control device side cross-sectional schematic diagram. The wireless remote control apparatus side surface schematic diagram of the state hung on the wall.

  A first embodiment of the present invention will be described below with reference to FIGS. 1 to 5 and FIG. First, the overall structure of the air conditioner will be described with reference to FIGS. 1 and 2. FIG. 1 is a configuration diagram of an air conditioner. FIG. 2 is a central sectional view of the indoor unit.

  The air conditioner 1 connects the indoor unit 2 and the outdoor unit 6 with a connection pipe 8 to air-condition the room. In the indoor unit 2, an indoor heat exchanger 33, a blower fan 311, a dew tray 35 and the like are attached to the housing base 21, covered with a decorative frame 23, and a front panel 25 is attached to the front surface of the decorative frame 23. The decorative frame 23 is provided with an air inlet 27 for sucking indoor air and an air outlet 29 for blowing air in which temperature and humidity are harmonized. In addition, a display unit 397 for displaying an operation status and a light receiving unit 396 for receiving an infrared operation signal from a separate wireless remote control device 5 are arranged on the lower right side of the front panel 25 in the front direction.

  The indoor unit 2 includes a control board in an internal electrical component box, and a microcomputer is provided on the control board. The microcomputer receives signals from various sensors such as an indoor temperature sensor and an indoor humidity sensor (not shown), receives an operation signal from the wireless remote control device 5 at the light receiving unit 396, and also sends an indoor blower 311, a movable panel drive motor, an up / down wind direction plate The indoor unit 2 is controlled in an integrated manner, such as controlling the drive motor, the left and right wind direction plate drive motors, and controlling the communication with the outdoor unit.

  When the air conditioner 1 is operated, the wireless remote control device 5 is operated to perform desired cooling, heating, and dehumidifying operations.

  In the case of cooling operation, the heat exchanger in the outdoor unit 6 functions as a condenser, and the indoor heat exchanger 33 in the indoor unit 2 functions as an evaporator. By compressing the refrigerant with a compressor in the outdoor unit 6 and flowing the high-temperature and high-pressure refrigerant to an outdoor heat exchanger that functions as a condenser and exchanging heat with the outside air, the refrigerant basically changes from gas to liquid. Phase change. After that, the refrigerant that has become liquid is reduced in pressure to a desired pressure by passing through an electronic expansion valve in the outdoor unit 6, and the refrigerant flows through the connection pipe 8 to the indoor heat exchanger 33 that functions as an evaporator. The indoor heat exchanger 33 exchanges heat between the refrigerant having a temperature lower than the room temperature and the room air, thereby lowering the temperature of the room air passing through the room heat exchanger 33 and air-conditioning the room to a desired temperature. In the indoor heat exchanger 33, the refrigerant basically changes in phase from a two-phase state to a gas. Thereafter, the refrigerant circulates to the outdoor unit 6 through the connection pipe 8.

  In the case of heating operation, the outdoor heat exchanger functions as an evaporator and the indoor heat exchanger 33 functions as a condenser. In order to flow the warm air heated by the heat exchange in the indoor heat exchanger 33 to a lower position in the room, the upper vertical wind direction plate 291 and the lower vertical wind direction plate 292 are basically lower than those in the cooling operation. Tilt in the direction. However, the directions of the upper vertical wind direction plate 291 and the lower vertical wind direction plate 292 change according to the instruction from the wireless remote controller 5 and the operation mode.

  In the case of the dehumidifying operation, the indoor heat exchanger 33 is thermally divided into two, and one of the indoor heat exchangers 33 is an evaporator, and one of the indoor heat exchangers 33 and the outdoor heat exchanger are condensers. With this configuration, the compressor, the dehumidifying decompressor that is placed between the two divided indoor heat exchangers and performing the decompression action, the fan that ventilates the outdoor heat exchanger and the fan that ventilates the indoor heat exchanger are controlled. By doing so, it is possible to realize a cooling dehumidifying operation, a heating dehumidifying operation, and an isothermal dehumidifying operation.

  Next, the external appearance and internal structure of the wireless remote control device 5 will be described with reference to FIGS. FIG. 3 is an external front view of the wireless remote control device. FIG. 4 is an external rear view of the wireless remote control device.

  As shown in FIG. 3, the wireless remote control device 5 includes a wireless remote control device light receiving unit 401, a solar panel 402, an LCD module 403, and operation buttons 404. The wireless remote control device light receiving unit 401 is located at the upper end of the wireless remote control device 5 so as to easily receive light. The solar panel 402 supplies power required when the wireless remote control device 5 is on standby. The LCD module 403 is composed of a vertically long large liquid crystal display device that is arranged to fill the entire area, leaving an edge around the display unit arrangement surface. The operation buttons 404 are arranged leaving an edge around the operation button arrangement surface.

  Further, the wireless remote control device 5 has a thermistor ventilation hole 410 and a dry battery socket cover 411 as shown in FIG. The thermistor ventilation hole 410 is provided to circulate the ambient air, and releases heat from the wireless remote control device 5 itself, thereby reducing the error of the room temperature thermistor for the wireless remote control device that measures the temperature around the wireless remote control device 5. effective.

  Also, by removing the battery socket cover 411, the dry battery can be installed or replaced in the dry battery socket 422.

  A wireless remote control device (first embodiment) according to the present invention is shown in FIGS. FIG. 5 is a schematic side cross-sectional view of the remote controller according to the first embodiment. FIG. 9 is a side cross-sectional schematic diagram of the wireless remote control device in a state of being hung on a wall in the first embodiment. The first embodiment relates to an invention in which the liquid leaking from the battery inside the wireless remote control device does not flow into the lithium primary battery 431 when the wireless remote control device 5 is placed on a table or the like so that the housing lower surface 406 is in contact.

The case of the wireless remote control device includes a case upper surface 405, a case lower surface 404, a case upper end side surface 407, and a case lower end side surface 408. An operation button 404 for operating the electronic device and an operation unit for operating the electronic device are located on the top surface 405 of the housing. The housing lower surface 406 is located behind the housing upper surface 405. The case side surface is a surface other than the case upper surface 405 and the case lower surface 406, and the case upper end side surface 407 includes a transmission unit . The housing lower end side surface 408 is located behind the housing upper end side surface 407.

  The wireless remote control device 5 includes a lithium primary battery 431 as one of the power sources and a battery socket 422 that houses a battery as another power source.

  As shown in FIG. 5, when the wireless remote controller 5 is placed on a horizontal table or the like with the housing lower surface 406 down, the lower surface of the lithium primary battery 431 and the battery lower surface 406 below the battery socket 422. Comparing the height of a certain location, the lower surface of the lithium primary battery 431 is at a high position. With this configuration, the liquid leaked from the battery installed in the battery socket 422 flows to the lower surface of the housing below the battery socket 422. Since the lithium primary battery 431 is positioned higher than the lower surface of the housing below the battery socket 422, liquid can be prevented from entering the lithium primary battery 431 by the action of gravity.

  Further, as shown in FIG. 9, the lower end side surface of the lithium primary battery 431 is positioned in the direction of the upper end side surface 407 of the casing lower end side surface 408 positioned on the side of the battery socket 422. When the wireless remote control device 5 is installed in the wireless remote control device housing portion on the wall or the like so that the lower end side surface 406 of the housing faces down, the liquid leaking from the battery stored in the battery socket 422 is lateral to the battery socket 422. Flows to the bottom side surface 408 of the casing. Since the lower end side surface of the lithium primary battery 431 is located higher than the lower end side surface 408 of the housing on the side of the battery socket 422, it is possible to prevent liquid from entering the lithium primary battery 431 by the action of gravity.

  In addition, by making the distance in the height direction between the lower surface of the housing below the battery socket 422 and the lower surface of the lithium primary battery 431 longer than the amount of change in the vertical direction with respect to the lower surface of the housing due to impact or deterioration, Even when the battery is deformed, the lower surface of the housing below the battery socket 422 can be prevented from becoming higher than the lower surface of the lithium primary battery 431.

  Furthermore, as shown in FIG. 5, the lower surface of the lithium primary battery 431 is located higher than the lower surface of the battery socket 422. With this configuration, when the wireless remote control device 5 is placed on a table or the like so that the housing lower surface 406 is in contact, the lower surface of the lithium primary battery 431 is higher than the lower surface of the battery socket 422, so that the liquid leaking from the battery The liquid leaking from the battery installed in the battery socket 422 reliably does not flow into the lithium primary battery 431 without considering the flow path.

  In addition, as shown in FIG. 9, the lower end side surface of the lithium primary battery 431 is positioned in the direction of the upper end side surface 407 of the case from the lower end side surface of the battery socket 422. With this configuration, when installed on the wall with the casing lower end side surface 408 facing down, the lower end side surface of the lithium primary battery 431 is positioned in the direction of the casing upper end side surface 407 rather than the lower end side surface of the battery socket 422, so Thus, the liquid leaking from the battery installed in the battery socket 422 does not flow into the lithium primary battery 431 reliably.

  Furthermore, as shown in FIG. 5, the lower surface of the lithium primary battery 431 is positioned via the housing lower surface 406 and a space. With this configuration, in the unlikely event that liquid leaks from the battery installed in the battery socket 422 and the wireless remote control device 5 is tilted with the housing lower end side surface 408 upward, the liquid flows on the housing lower surface 406, and the lithium primary Since the battery 431 is located through the space between the housing lower surface 406 and the housing upper end surface 407, the leaked liquid can be prevented from entering the lithium primary battery 431.

  Further, when the wireless remote control device 5 is placed on a horizontal table or the like so that the lower surface 406 of the housing is in contact, the board 443 that controls the wireless remote control device 5 in an integrated manner is positioned above the lithium primary battery 431. Yes. With such a configuration, even when a liquid flows into the housing from above the lithium primary battery 431, the substrate 443 serves as a roof, and the liquid does not flow directly to the battery. Since the lower surface of the housing below the battery socket 422 is lower than the lower surface of the lithium primary battery 431, the liquid flows to the lower surface of the housing below the battery socket 422 before the lithium primary battery 431. Therefore, even if liquid passes through the upper surface 405 of the housing and enters from above the lithium primary battery 431, the liquid can be reliably prevented from entering the lithium primary battery 431.

  Further, as shown in FIG. 5, the housing lower surface 406 includes a finger hook portion 427. By placing a finger on the finger hook portion 427, it is possible to improve retention. In this embodiment, a finger hook portion 427 is provided on the lower surface 406 of the housing between the lithium primary battery 431 and the battery socket 422. With this configuration, the finger hooking part 427 blocks the liquid flowing from the battery socket 422 side to the lithium primary battery 431 in a state in which the wireless remote control device 5 is placed with the housing lower surface 406 in contact with a table or a wall. Prevent entry into.

  In addition, since the finger-hanging portion 427 is used as a substitute for the solid object that dampens the liquid, it is possible to suppress the downsizing and the manufacturing complexity for the liquid leakage countermeasure.

  A second embodiment according to the present invention will be described below with reference to FIG. FIG. 6 is a schematic cross-sectional side view of the remote controller according to the second embodiment. In the second embodiment, the lower surface of the lithium primary battery 431 is lower than the lower surface 406 of the case where the lower surface of the lithium primary battery 431 is below the battery socket 422 when the lower surface 406 of the case is placed on a table or the like. Is also low. However, since the lithium primary battery 431 is positioned via the housing lower surface 406 and the space, even if liquid enters the wireless remote control device 5, the liquid remains in the space between the lithium primary battery 431 and the housing lower surface 406. It is possible to prevent accumulation of liquid into the lithium primary battery 431.

  Hereinafter, a third embodiment according to the present invention will be described with reference to FIG. FIG. 7 is a side cross-sectional schematic diagram of a remote controller in Embodiment 3 of the embodiment. The third embodiment is different from the first embodiment in that the housing lower surface 406 has a convex portion 447 that protrudes from the housing upper surface 405 toward the housing lower surface 406, between the lithium primary battery 431 and the battery socket 422. I have. The housing lower surface 406 includes a protrusion 449, and the housing lower surface 406 includes a liquid escape hole 448 at a position lower than the lithium primary battery 431.

  By storing the liquid flowing from the battery socket 422 side to the lithium primary battery 431 in the liquid reservoir formed by the convex portion 447, intrusion into the lithium primary battery 431 can be prevented.

  In addition, a liquid escape hole 448 is provided at a position lower than the lithium primary battery 431 in a state where the housing lower surface 406 is placed on a table or the like. The liquid flows out from the liquid escape hole 448 before the primary battery 431 is submerged. Since the protrusion 449 is provided, a surface such as a table does not block the liquid escape hole 448.

  Further, by providing a hole in the housing lower surface 406 and the liquid reservoir formed by the solid object or the convex portion or the concave portion, the liquid accumulated in the liquid reservoir can be discharged from the hole, so that more liquid Intrusion into the lithium primary battery 431 can be prevented even when the battery flows into the wireless remote control device 5.

  Hereinafter, a fourth embodiment according to the present invention will be described with reference to FIG. The fourth embodiment is different from the first embodiment in that a finger hook portion 427 that also serves as a solid object as a wall is in contact with the substrate 443 and partitions from the housing lower surface 406 to the substrate 443. FIG. 8 is a side cross-sectional schematic diagram of a remote controller in Embodiment 4 of the embodiment.

  Since the finger hook portion 427 separates the space inside the housing where the lithium primary battery 431 is located from the space inside the housing where the battery socket 422 is located, the battery socket 422 can be used regardless of the orientation of the wireless remote controller 5. Liquid does not flow from the side to the lithium primary battery 431.

Further, the lithium primary battery side arranged protective member is flame retardant, the substrate 443 compared to a housing of the wireless remote controller 5 uses a member having heat resistance. Therefore, any chance, even when the lithium primary battery 431 generates heat, the lithium primary battery side arranged protective member and the substrate 443 becomes defensive wall, hard heat is transferred to the entire wireless remote controller 5 from lithium primary battery 431.

  Conventionally, there has been no means for preventing the ingress of liquid other than sealing the battery. The present invention provides means for preventing the ingress of new liquids other than sealing. It is also possible to use the present invention in combination with the prevention of liquid intrusion by sealing.

  Further, the present embodiment has been described using the lithium primary battery 431 as the power source of the remote control device 5, but instead of the lithium primary battery 431, lithium ion batteries, lithium / air batteries, silver oxide batteries, air zinc batteries, and nickel metal hydride batteries are used. May be.

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Indoor unit 5 Wireless remote control device 6 Outdoor unit 8 Connection piping 21 Case base 23 Decorative frame 27 Air inlet 29 Air outlet 33 Indoor heat exchanger 290 Blowing air path 291 Upper vertical wind direction plate 292 Lower vertical Wind direction plate 311 Indoor fan 396 Main body light receiving unit 397 Display device 401 Wireless remote control device light receiving unit 402 Solar panel 403 LCD module 404 Operation button 405 Case upper surface 406 Case lower surface 407 Case upper side 408 Case lower side 410 410 Ventilation hole for thermistor 411 battery socket cover 422 battery socket 427 finger hook
4 31 lithium primary battery
4 41 Thermal fuse fixing part
4 43 groups plate
4 46 Wall 447 Projection 448 Liquid escape hole 449 Projection

Claims (8)

A housing having an upper surface, a lower surface, an upper end side surface and a lower end side surface;
An operation unit that is located on the upper surface of the housing and operates the operation of the electronic device;
A transmission unit that is closer to the upper side surface than the lower side surface of the housing, and that transmits a signal from the operation unit to the electronic device;
A battery socket for storing a battery used as a power source in the housing;
A lithium battery used as a power source in the housing,
The lower surface of the lithium battery is higher than the lower surface of the housing or the battery socket cover located below the battery socket,
A wireless remote control device in which a lower end side surface of the lithium battery is positioned in a direction of an upper end side surface of the casing, rather than a lower end side surface of the casing positioned on a side of the battery socket. In claim 1, the lower surface of the lithium battery is higher than the lower surface of the battery socket,
The wireless remote control device, wherein a lower end side surface of the lithium battery is positioned in a direction of an upper end side surface of the housing from a lower end side surface of the battery socket.   3. The wireless remote control device according to claim 1, wherein the lithium battery is positioned via a space between a lower surface and an upper end side surface of the housing.   4. The wireless remote control device according to claim 1, further comprising a finger hook portion between the battery socket and the battery on the lower surface of the housing. 5.   The wireless remote control device according to claim 4, wherein the finger hanging portion is formed so as to be directed from a lower surface of the housing to an upper surface of the housing. The board according to claim 5, wherein the board is located in the casing and located above the lithium battery, and controls the wireless remote control device in an integrated manner.
A wireless remote control device in which the finger hanging portion extends from the lower surface of the housing to the substrate.   6. The wireless remote control device according to claim 1, further comprising a board that is located in the casing and is located above the lithium battery and controls the wireless remote control device in an integrated manner. A wireless remote control device according to any one of claims 1 to 7,
A light receiving unit for receiving a signal from the transmission unit of the wireless remote control device;
An air conditioner comprising: an outdoor unit and a microcomputer that controls the operation of the indoor unit based on control information received by the light receiving unit.

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