JP2015138434A - Electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correctly recognize a range of pressing by a user when using a resistance film type touch pad underwater.SOLUTION: An electronic device includes a resistance film type touch pad, and the touch pad includes a plurality of electrical conducting films that face each other with an air layer interposed. The touch pad comprises: an air tight mechanism that tightly seals the air layer; and an isolation part that is provided in the air tight mechanism and isolates the air layer from an external environment. When the electronic device is in water, the isolation part is configured to cause the air within the air tight mechanism to be compressed and thereby an air pressure of the air layer is configured to be adjusted.

Description

  The present invention relates to an electronic device.

  A resistance film type touch panel device is known that corrects the pressure range detected by the touch panel due to water pressure deflection, and accurately recognizes the pressure range by the user when operated in water. (Patent Document 1).

JP 2013-45398 A

  However, it is difficult to accurately determine the bending due to the water pressure, and the touch range (including the touch panel) where the bending occurs due to the water pressure may not be able to accurately recognize the pressing range by the user.

  An electronic device according to the present invention is an electronic device having a resistive film type touch pad, the touch pad having a plurality of conductive films facing each other with an air layer interposed therebetween, and a sealed structure for sealing the air layer; Provided with a sealed structure and isolating the air layer from the external environment, and when the electronic device is in water, the air in the sealed structure is compressed by the isolated part and the air pressure by the air layer is adjusted It is characterized by that.

  By adjusting the air pressure between the permeable conductive films and suppressing the bending due to the water pressure, the pressing range by the user can be accurately recognized.

(A) It is a rear view of the digital camera which is an electronic device by one embodiment of this invention. (B) It is a side view of the digital camera which is an electronic device by one embodiment of this invention. It is the schematic sectional drawing which represented typically the II-II cross section of FIG. 1 in case the digital camera which is an electronic device by one embodiment of this invention is located in air | atmosphere. It is the schematic sectional drawing which represented typically the II-II cross section of FIG. 1 in case the digital camera which is an electronic device by one embodiment of this invention is located in water. It is a schematic sectional drawing which shows the modification of an isolation part.

  A case where the present invention is applied to a digital camera will be described with reference to the drawings. FIG. 1A is a rear view of a digital camera which is an electronic apparatus according to an embodiment of the present invention. A digital camera 1 shown in FIG. 1A is a waterproof camera, and includes a resistive touch panel 10 on the back surface.

  FIG. 1B is a side view of the digital camera 1 as viewed from the left side of FIG. The digital camera 1 has a photographing optical system 11 on the front surface and a plurality of openings 12 on the side surface. The opening 12 passes through the outer cover 13 of the digital camera 1.

  FIG. 2 is a schematic cross-sectional view schematically showing the II-II cross section of FIG. FIG. 2 shows a resistive touch panel 10 having a protective cover 20, a first transparent conductive film 21, a second transparent conductive film 22, and a display unit 23, an opening 12, a first air layer 30, A two-air layer 31, a metal case 40, and a separating part 41 are illustrated.

  A display unit 23 is attached to the metal case 40. The second transparent conductive film 22 is provided on the display surface of the display unit 23, and the first transparent conductive film 21 is provided on the protective cover 20. The first transparent conductive film 21 and the second transparent conductive film 22 are opposed to each other with the first air layer 30 interposed therebetween.

  The protective cover 20 is formed of a transparent and flexible resin material, such as PET (Polyethylene Terephthalate). When the protective cover 20 is pressed, the protective cover 20 bends together with the first transparent conductive film 21.

  The first transparent conductive film 21 and the second transparent conductive film 22 are made of ITO (indium tin oxide), zinc oxide, or the like, transmit visible light, and have uniform conductivity. When the first transparent conductive film 21 bends according to the pressure applied through the protective cover 20 and comes into contact with the second transparent conductive film 22, a voltage corresponding to the contact position (pressing position) is generated by a voltage detection unit (not shown). Detected.

  The display unit 23 uses a liquid crystal display element, an organic EL (Electro Luminescence) display element, or the like, and displays an operation screen, a menu screen, a live view image, and the like of the digital camera 1. The user can view the display screen of the display unit 23 through the protective cover 20.

  A side of the touch panel 10 has a second air layer 31 communicating with the first air layer 30. The first air layer 30 and the second air layer 31 are sealed by the outer cover 13, the metal case 40, and the isolation part 41.

  The isolation part 41 is formed of an elastic member such as rubber, and the peripheral edge part 41 a is fixed to the outer cover 13 and the metal case 40. The isolation part 41 is provided between the second air layer 31 and the opening 12, and water or air that has entered the inside of the digital camera 1 through the second air layer 31 through the external environment, for example, the opening 12. Isolate from. Moreover, the isolation | separation part 41 is elastically deformed according to the pressure of the water and air which passed the opening part 12, and the air pressure of the 1st air layer 30 is substantially corresponded with the pressure of an external environment, ie, a water pressure and atmospheric pressure. adjust. The volume of the second air layer 31 is sufficiently larger than the volume of the first air layer 30. The isolation part 41 has a sufficiently large surface to which pressure is applied so that the air pressure of the first air layer 30 can be adjusted with a small amount of elastic deformation.

  When the digital camera 1 is located in the atmosphere, the air pressure of the external environment and the air pressures of the first air layer 30 and the second air layer 31 are approximately in a state where the isolation part 41 is not elastically deformed as shown in FIG. Match. Since the air pressure of the first air layer 30 and the air pressure of the external environment are substantially the same, the protective cover 20 is bent only by the amount of pressing by the user. Therefore, the touch panel 10 can detect a correct pressing position.

  When the digital camera 1 is located in water, the water that has passed through the opening 12 presses the isolation part 41. The isolation part 41 is elastically deformed as shown in FIG. 3 by the water pressure corresponding to the water depth where the digital camera 1 is located, and compresses the air in the first air layer 30 and the second air layer 31. The isolation part 41 stops elastic deformation when the water pressure and the air pressure of the second air layer 31 coincide. At that time, the air pressure of the first air layer 30 communicating with the second air layer 31 and the water pressure for pressing the protective cover 20 are substantially the same. Since the air pressure of the first air layer 30 substantially matches the water pressure of the external environment, the protective cover 20 is bent only by the pressing amount of the user. Therefore, the touch panel 10 can detect a correct pressing position. When the digital camera 1 changes the position from underwater to the atmosphere, the compressed air in the first air layer 30 and the second air layer 31 expands. As a result, the air layer of the first air layer 30 communicating with the second air layer 31 and the water pressure pressing the protective cover 20 substantially coincide with each other. Therefore, even when the digital camera 1 changes the position from underwater to the atmosphere, the touch panel 10 can detect the correct pressing position.

According to the embodiment described above, the following effects can be obtained.
The resistive film type touch panel 10 of the digital camera 1 includes a first transparent conductive film 21 and a second transparent conductive film 22 that are opposed to each other with the first air layer 30 interposed therebetween, and communicates with the first air layer 30. The second air layer 31, the first air layer 30 and the second air layer 31 are hermetically sealed (metal case 40, isolation part 41 and outer cover 13), and are provided in the hermetic structure. And an isolation part 41 that is provided with the back surface facing the second air layer 31 and isolates the second air layer 31 from the external environment. When the digital camera 1 is located in the water, the air in the sealed structure is compressed by the separator 41 pushed by the water pressure, and the air pressure by the first air layer 30 is adjusted.
Therefore, in the digital camera 1, the pressing range by the user can be accurately recognized by suppressing the bending of the first transparent conductive film 21 due to water pressure.

The embodiment described above can be implemented with the following modifications.
(Modification 1) The method for adjusting the air pressure of the first air layer 30 described in the above embodiment can also be applied to a resistive touch pad excluding the display unit 23 from the touch panel 10. When applied to a touch pad, the first transparent conductive film 21 and the second transparent conductive film 22 may not transmit visible light, that is, may not be transparent.

(Modification 2) In the above embodiment, the isolation portion 41 is an elastic membrane, but any configuration can be used as long as the air in the first air layer 30 and the second air layer 31 can be compressed with a water pressure according to the water depth. It may be. For example, as shown in FIG. 4, the isolation part 41 is configured to be slidable in the direction of arrow A in the second air layer 31 without fixing the isolation part 41 to the metal case 40 and the outer cover 13. Also good. At this time, the isolation part 41 is preferably formed of a material that does not bend due to water pressure in order to prevent water from entering the second air layer 31. In FIG. 4, the position of the isolation part 41 when the digital camera 1 is in the atmosphere is illustrated by a solid line, and the position of the isolation part 41 when the digital camera 1 is underwater is illustrated by a broken line. In addition, it is preferable to provide an O-ring (not shown) on the peripheral edge of the isolation part 41 so that water or the like does not enter the second air layer 31.

(Modification 3) In the above embodiment, the case where the present invention is applied to a digital camera has been described. However, the present invention can be applied to an electronic device other than a digital camera as long as the electronic device includes a resistive touch pad or a touch panel. The invention can be applied.

  The embodiments and modifications described above are merely examples, and the present invention is not limited to these contents as long as the features of the invention are not impaired. Further, the embodiments and modifications described above may be combined and executed as long as the features of the invention are not impaired.

DESCRIPTION OF SYMBOLS 1 Digital camera 10 Touch panel 12 Opening part 13 Outer cover 20 Protective cover 21 1st transparent conductive film 22 2nd transparent conductive film 30 1st air layer 31 2nd air layer 40 Metal case 41 Isolation part

Claims (5)

An electronic device having a resistive touch pad,
The touchpad has a plurality of conductive films facing each other with an air layer interposed therebetween,
A sealing structure for sealing the air layer;
An isolation part provided in the sealed structure, and isolating the air layer from the external environment;
With
When the electronic device is in water, the air in the sealed structure is compressed by the isolation part, and the air pressure by the air layer is adjusted. The electronic device according to claim 1,
When the position of the electronic device is changed from underwater to the atmosphere, the air in the sealed structure expands and the air pressure by the air layer is adjusted. The electronic device according to claim 1 or 2,
When the electronic device is located in the air, the air pressure by the first air layer substantially matches the atmospheric pressure,
When the electronic device is located in water, the air pressure generated by the first air layer substantially matches the water pressure corresponding to the water depth. In the electronic device as described in any one of Claim 1 to 3,
The electronic device according to claim 1, wherein the isolation part is an elastic film that deforms according to water pressure. The electronic device according to any one of claims 1 to 4,
The air layer has a first air layer interposed between the plurality of conductive films, and a second air layer connected to the first air layer,
The volume of the second air layer is larger than the volume of the first air layer,
When the electronic device is in water, the air in the first air layer and the second air layer is compressed by the isolation part.

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