JP5887529B2 - Display device - Google Patents

Description

  The present invention relates to a display device that outputs sound using a display panel that displays information as a diaphragm.

  2. Description of the Related Art Conventionally, there has been provided a display device that outputs sound from a display panel by vibrating a display panel that displays information. For example, Patent Document 1 discloses an organic EL panel speaker as a display device that displays information and outputs sound. The organic EL panel speaker described in Patent Document 1 includes an organic EL panel unit that functions as a display panel. The organic EL panel part has an outer peripheral part held by a front frame and a rear frame. This organic EL panel speaker includes a voice coil type driving device including a magnetic circuit configuration body including a magnet and a voice coil. The magnetic circuit component is fixed in an opening formed at the center of the rear frame, and the voice coil is fixed on the back surface of the display panel. In this configuration, when an audio signal is input to the voice coil, the organic EL panel unit vibrates and outputs sound. The display and audio output of the organic EL panel speaker are controlled by a separately provided control unit.

JP 2009-301431 A

  As described above, the organic EL panel speaker described in Patent Document 1 includes a separate control unit. When providing a control part separately, it is thought that a control part is provided with a case. Therefore, when installing the organic EL panel speaker on the ceiling or wall, if you try to place it on the back of the ceiling or on the back of the wall so that the case of the control unit is not exposed, there will be a problem that construction will take time, and the case will be placed indoors Then the case is exposed and looks bad. Patent Document 1 describes that the control unit may be provided integrally with the organic EL panel speaker. However, since the magnetic circuit component is fitted in the rear frame, the organic EL panel speaker and the control unit are disclosed. There is a problem that the thickness as a whole is increased and the outer dimensions are increased.

  The present invention has been made in view of the above-described reasons, and an object of the present invention is to provide a display device that can be made smaller than a conventional configuration while integrating a control circuit.

  The display device of the present invention is a box-shaped main body having an open surface on one side, and a thin plate that displays information with one surface in the thickness direction as a display surface, and is attached to the one surface of the main body with the display surface facing outward. A display panel, a driving device that is fixed to the inner surface of the main body facing the inner surface of the display panel, converts an electrical signal into vibration of the display panel, and outputs sound from the display panel, and supplies power to at least the display panel to display the display panel A display circuit for displaying information on the surface and an electronic circuit component constituting an audio circuit for inputting an electric signal to the driving device. The electronic circuit component is housed in the main body and intersects the thickness direction of the display panel. It is arranged around the drive device in a plane.

  In this display device, the electronic circuit component is preferably attached to the main body.

  In this display device, it is more preferable that a reinforcing member for reinforcing the display panel is provided on the inner surface of the display panel.

  In this display device, the drive device includes a coil to which an electric signal is input, and includes a shield member made of a magnetic material and disposed between the coil and the electronic circuit component in a plane intersecting the thickness direction of the display panel. Is more desirable.

  In this display device, the drive device includes a coil to which an electric signal is input, and a part of the reinforcing member is made of a magnetic material and is disposed between the coil and the electronic circuit component in a plane intersecting the thickness direction of the display panel. It is more desirable to be used as a shield member.

Another display device according to the present invention is a box-shaped main body having an opening on one side, and a thin plate that displays information using one side in the thickness direction as a display surface, and is attached to the one side of the main body with the display surface facing outward. A display panel that is fixed to the inner surface of the main body facing the inner surface of the display panel, converts an electrical signal into vibration of the display panel and outputs sound from the display panel, and supplies power to at least the display panel. A display circuit for displaying information on the display surface and an electronic circuit component constituting an audio circuit for inputting an electric signal to the driving device. The electronic circuit component is housed in the main body, and the driving device receives an electric signal. The electronic circuit component and the coil are disposed at both ends of the longest straight line connecting the inner peripheral surfaces of the main body in a plane intersecting the thickness direction of the display panel. The features.

  In this display device, it is more desirable that a part of the strong member also serves as an electric circuit connecting the electronic circuit components.

  According to the configuration of the present invention, there is an advantage that the circuit for control can be integrated and the size can be reduced as compared with the conventional configuration.

Embodiment 1 is shown, (a) is an exploded side view partly cut away, (b) is an exploded perspective view. It is a partially cutaway side view showing the same. It is a front view showing the same. It is a partially cutaway exploded side view showing another example of arrangement. FIG. 6 is an exploded perspective view showing a second embodiment. FIG. 6 is an exploded perspective view showing a third embodiment. FIG. 6 is an exploded perspective view showing a fourth embodiment.

  A display device described below outputs sound from a display panel by vibrating a display panel that displays information. In each of the following embodiments, a display device used for a guide light indicating an evacuation route or the like is illustrated, but this does not prevent the technique described in the embodiment from being used for a display device for other purposes.

(Embodiment 1)
The display panel 2 is formed in a thin rectangular plate shape, and displays information on the display surface 21 that is one surface in the thickness direction. As shown in FIG. 1, a pictogram indicating an evacuation exit is displayed on the display surface 21 as information. The display panel 2 according to the present embodiment is assumed to have a configuration in which a surface emitting light source using an organic EL is provided and information is displayed by light emission from substantially the entire display surface 21 when power is supplied. Hereinafter, the display surface 21 of the display panel 2 will be described as the front surface.

  The display device 1 includes a rectangular box-shaped main body 4 having an open front surface that is one surface in the thickness direction. The main body 4 is fixed to, for example, a ceiling or a wall surface. As shown in FIG. 2, the display panel 2 is attached to the front surface of the main body 4 so as to close the opening on the front surface of the main body 4. Inside the main body 4, a driving device 5 that receives an electrical signal and vibrates the display panel 2 is disposed. That is, when an electric signal is input to the driving device 5, the display panel 2 vibrates with respect to the main body 4, and sound is output from the display panel 2.

  A reinforcing member 3 for reinforcing the display panel 2 is provided on the inner surface of the display panel 2 (the right surface in FIG. 2). As shown in FIG. 1B, the reinforcing member 3 includes a rectangular frame-shaped outer frame portion 31, an annular inner frame portion 32 positioned at the center of the outer frame portion 31, and each of the outer frame portions 31. The connecting portion 33 extends from the apex and continues to the inner frame portion 32.

  The main body 4 includes a rear wall 41 (not shown) that closes the rear surface, and a peripheral wall 42 that protrudes forward from the entire outer peripheral edge of the rear wall 41. As shown in FIG. 2, the display panel 2 is attached to the main body 4 by the outer peripheral portion of the inner surface being supported by the front end portion of the peripheral wall 42, and can vibrate with respect to the main body 4.

  The drive device 5 includes, for example, a coil and a magnet. In the present embodiment, the coil 51 is fixed to the central portion of the inner surface of the rear wall 41 of the main body 4, and the magnet (not shown) is fixed to the central portion of the inner surface of the display panel 2. When the display device 1 is seen through the display panel 2 from the front, the drive device 5 is positioned inside the inner frame portion 32 of the reinforcing member 3 (see FIG. 3). Further, a yoke 52 made of a magnetic material is projected rearward on the inner surface of the display panel 2.

  When an electric signal is input to the coil 51, the display panel 2 vibrates in the front-rear direction. That is, the main body 4 is fixed to a wall surface or the like, and the display panel 2 is supported by the peripheral wall 42 of the main body 4, so that the display panel 2 vibrates in the front-rear direction with respect to the main body 4. Therefore, when an electrical signal is input to the coil 51, sound is output from the display panel 2.

  Inside the main body 4, a display circuit for displaying information on the display surface 21 of the display panel 2, an audio circuit for outputting sound from the display panel 2, and an electronic circuit component 6 constituting a power supply device are housed. Each electronic circuit component 6 is electrically connected by an electric wire or the like. In the present embodiment, power is supplied from the same power supply device to the display circuit and the audio circuit. The power supply device includes a storage battery, and normally converts electric power from a commercial power supply and supplies it to the electronic circuit component 6 while charging the storage battery. When power supply from the commercial power supply stops, the power supply device supplies power from the storage battery to the electronic circuit component 6.

  When power is supplied from the power supply device, the display circuit causes the display panel 2 to emit light and display information on the display surface 21. The audio circuit is driven to output a voice message or the like from the display panel 2 that is supplied with power only when the power supply from the commercial power supply is stopped and the power supply from the storage battery is started. An electric signal is input to the coil 51 of the device 5. The sound circuit may receive a notification signal input from the outside and input an electric signal to the coil 51 of the driving device 5. In addition, the audio circuit may amplify an electric signal input from a microphone or the like and input the amplified signal to the coil 51 of the driving device 5. The electronic circuit component 6 includes components such as a terminal block for connecting an electric wire from a commercial power source and an inspection switch for inspecting the storage battery.

  The electronic circuit component 6 is attached to the inner surface of the rear wall 41 and is disposed around the coil 51 in a plane that intersects the thickness direction of the display panel 2. Thereby, it is suppressed that the thickness of the display apparatus 1 becomes large. Since the electronic circuit component 6 is accommodated in the main body 4, the electronic circuit component 6 is not exposed to the outside and does not affect the appearance. Further, since the display circuit and the audio circuit are integrated with the display panel 2, the construction is facilitated. Further, as shown in FIG. 3, the electronic circuit component 6 is disposed at a position that does not overlap with the reinforcing member 3 when the display device 1 is seen through the display panel 2 from the front. Thereby, the thickness of the display device 1 can be further reduced.

  In addition, you may provide the electronic circuit component 6 in the inner surface side of the display panel 2, as shown in FIG. In addition, the display panel 2 is not limited to the configuration using the organic EL, and a surface-emitting light source using an LED and a light guide plate may be used.

(Embodiment 2)
In this embodiment, as shown in FIG. 5, the point from which the shield member 7 is provided in the main body 4 is different from Embodiment 1. FIG.

  The shield member 7 is made of a magnetic material such as iron, and is disposed between the coil 51 and the electronic circuit component 6 in a plane intersecting the thickness direction of the display panel 2. That is, the shield member 7 is provided on the rear wall 41 of the main body 4 so as to surround the outer peripheral surface of the coil 51 in the vertical and horizontal directions over substantially the entire circumference. As a result, the magnetic flux around the coil 51 can easily pass through the shield member 7, and the influence of the magnetic field formed when an electric signal is input to the coil 51 is less affected by the electronic circuit component 6. Can be prevented. Further, when the display device 1 is seen through the display panel 2 from the front, the shield member 7 is formed such that a portion overlapping the connecting portion 33 is cut out and a tip portion extends outward along the connecting portion 33. It is formed so as not to overlap with the reinforcing member 3.

  Other configurations and functions are the same as those of the first embodiment.

(Embodiment 3)
In this embodiment, as shown in FIG. 6, the point from which at least one part of the reinforcement member 3 consists of magnetic bodies, such as iron, differs from Embodiment 1. FIG. That is, in the present embodiment, a part of the reinforcing member 3 functions as a shield that makes it difficult for a magnetic field formed when an electric signal is input to the coil 51 to affect the electronic circuit component 6. In this embodiment, the inner frame part 32 arrange | positioned so that the coil 51 may be enclosed is formed with a magnetic body. As a result, a magnetic field passing through the reinforcing member 3 is easily formed, and the influence of the magnetic field formed when an electric signal is input to the coil 51 is less affected by the electronic circuit component 6, thereby preventing malfunction of the display device 1. it can. In addition, since it is not necessary to use a separate shield member or the like, the number of parts of the display device 1 can be reduced.

  Other configurations and functions are the same as those of the first embodiment.

(Embodiment 4)
In the present embodiment, as shown in FIG. 7, the coil 51 is different from the first embodiment in that the coil 51 is attached near one corner (upper left corner in FIG. 7) of the inner surface of the rear wall 41 of the main body 4.

  The electronic circuit component 6 is attached in the vicinity of a diagonal (lower right corner in FIG. 7) attached to the coil 51 on the inner surface of the rear wall 41 of the main body 4. That is, they are arranged at both ends of the longest straight line connecting the inner peripheral surfaces of the peripheral wall 42 of the main body 4 in the plane intersecting the thickness direction of the display panel 2. Thereby, the physical distance between the coil 51 and the electronic circuit component 6 in the main body 4 is increased, and the electronic circuit component 6 is not easily affected by the magnetic field formed by the coil 51. In addition, since it is not necessary to use a separate shield member or the like, the number of parts of the display device 1 can be reduced.

  Other configurations and functions are the same as those of the first embodiment.

(Embodiment 5)
The present embodiment is different from the first embodiment in that a part of the reinforcing member 3 also serves as an electric circuit that connects the electronic circuit components 6. That is, the reinforcing member 3 is formed of a hard wire that is plastically deformed, such as a single core wire, and is connected to the electronic circuit component 6 via a connector or the like. Thereby, the reinforcing member 3 is also used as an electric wire for electrically connecting the electronic circuit components 6, and the number of components of the display device 1 can be reduced.

  Other configurations and functions are the same as those of the first embodiment.

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Display panel 21 Display surface 3 Reinforcement member 4 Main body 5 Drive apparatus 51 Coil 6 Electronic circuit component 7 Shield member

Claims (7)

  A box-shaped main body having an opening on one surface, a thin plate that displays information using one surface in the thickness direction as a display surface, the display panel being attached to the one surface of the main body with the display surface facing outward, and the display A driving device that is fixed to the inner surface of the main body facing the inner surface of the panel and converts an electrical signal into vibration of the display panel and outputs sound from the display panel; and at least power is supplied to the display panel to supply the power to the display panel. A display circuit for displaying information on a display surface, and an electronic circuit component constituting an audio circuit for inputting the electric signal to the driving device, the electronic circuit component being housed in the main body, and the display panel The display device is arranged around the drive device in a plane intersecting the thickness direction of the display device.   The display device according to claim 1, wherein the electronic circuit component is attached to the main body.   The display device according to claim 1, wherein a reinforcing member that reinforces the display panel is provided on the inner surface of the display panel.   The drive device includes a coil to which the electrical signal is input, and includes a shield member made of a magnetic material and disposed between the coil and the electronic circuit component in a plane intersecting the thickness direction of the display panel. The display device according to any one of claims 1 to 3, wherein:   The driving device includes a coil to which the electric signal is input, and a part of the reinforcing member is made of a magnetic material and is interposed between the coil and the electronic circuit component in a plane intersecting the thickness direction of the display panel. The display device according to claim 3, wherein the display device is also used as a shield member to be disposed. A box-shaped main body having an opening on one surface, a thin plate that displays information using one surface in the thickness direction as a display surface, the display panel being attached to the one surface of the main body with the display surface facing outward, and the display A driving device that is fixed to the inner surface of the main body facing the inner surface of the panel and converts an electrical signal into vibration of the display panel and outputs sound from the display panel; and at least power is supplied to the display panel to supply the power to the display panel. A display circuit that displays information on a display surface and an electronic circuit component that constitutes an audio circuit that inputs the electrical signal to the driving device, and the electronic circuit component is housed in the main body,
The driving device includes a coil to which the electric signal is input, and the electronic circuit component and the coil are the longest straight line connecting the inner peripheral surfaces of the main body in a plane intersecting the thickness direction of the display panel. Viewing device it is disposed at both ends of the.   The display device according to claim 3, wherein a part of the reinforcing member also serves as an electric circuit connecting the electronic circuit components.

Images