JP2009276603A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device, capable of easily performing connection or removal of a lighting means of a display panel to and from a circuit board in spite of a configuration in which components are arranged around the display panel. <P>SOLUTION: The display device comprises a display panel 3; a lighting means 9 for illuminating the display panel 3; a circuit board 12 having an annularly formed LED mounting area and an opening part formed in an area inside the LED mounting area; and a lead wire 16 connecting the lighting means 9 to the surface opposite to the surface facing the display panel 3 of the circuit board 12 via the opening part. Accordingly, in this display device, a sufficient working space can be ensured around a connecting point between the lead wire 16 and the circuit board 12 in spite of the configuration in which components such as LED are arranged in line around the display panel 3, and an operation for connection or removal of the lighting means 9 to and from the circuit board 12 can be easily performed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a display device using a display panel such as a liquid crystal display element or an electrophoretic element.

Conventionally, display devices using display panels such as liquid crystal display elements and electrophoretic elements have been used for various purposes, and light emitting elements such as LEDs are arranged around the display panel for purposes such as decoration and auxiliary lighting. (See, for example, Patent Documents 1 and 2).
In addition, such a display device includes an illumination unit that illuminates the display panel, and a circuit board on which a circuit for driving the display panel and the illumination unit is mounted. The circuit board and the illumination means are connected by a connecting body such as a lead wire (see, for example, Patent Document 3).

Japanese Patent No. 3235312 (page 4-5, FIGS. 1 and 5) Japanese Patent Laid-Open No. 2001-10063 (page 2, FIG. 1, FIG. 3) JP-A-8-36176 (page 3, FIG. 1)

However, the conventional display device has the following problems. In the display devices described in Patent Documents 1 and 2, light emitting elements are arranged in a ring shape on a circuit board. Therefore, as shown in Patent Document 3, when a lighting unit for illuminating the display panel is provided, the connection body that connects the lighting unit and the circuit board is arranged with the light emitting elements so as not to block the light emitting elements on the circuit board. It is connected to the circuit board in the area inside the area.
In such a configuration, there is a problem that there is not enough work space around the connection portion between the connection body and the circuit board, and the connection / removal work between the lighting element and the circuit board cannot be easily performed.

  Accordingly, the present invention solves the above-described problem, and enables display / lighting of the display panel and the circuit board to be easily connected / detached even when the components are arranged around the display panel. An object is to provide an apparatus.

  In order to solve the above-described problems and achieve the object, the display device of the present invention adopts the following configuration.

  The display device of the present invention includes a display panel, illumination means for illuminating the display panel, a component mounting region formed in an annular shape, and a circuit board having an opening formed in a region inside the component mounting region, It is characterized by comprising a connection body for connecting the illumination means and the surface opposite to the surface facing the display panel of the circuit board via the opening.

  In addition to the above-described configuration, the display device of the present invention includes a connector that is connected to the connection body on a surface opposite to the surface facing the display panel of the circuit board.

  Furthermore, the display device of the present invention is characterized in that, in addition to the above-described configuration, the connection body is a lead wire.

  In addition to the above-described configuration, the display device of the present invention is characterized in that the illumination means illuminates the display panel from the front side.

  Furthermore, the display device of the present invention is characterized in that, in addition to the above-described configuration, light emitting elements are arranged in the component mounting region.

  Furthermore, the display device of the present invention includes, in addition to the above-described configuration, an earthquake information acquisition unit that acquires a surplus time until the arrival of the main motion of the earthquake, and a control unit that controls each light emitting element. Is characterized in that in the earthquake display mode, the number of light emitting elements corresponding to the time until the arrival of the main motion is turned on to indicate a margin time.

  In the display device of the present invention, the illuminating means for illuminating the display panel and the surface opposite to the surface facing the display panel of the circuit board are connected by a connection body through the opening of the circuit board. For this reason, even in a configuration in which parts are arranged around the display panel, a sufficient working space is secured around the connection portion between the connection body and the circuit board, and connection / removal of the illumination means and the circuit board is ensured. Work can be easily performed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following, as an example of the display device of the present embodiment, an earthquake warning device that receives an earthquake early warning and displays prediction information of earthquake shaking will be described.
[Description of Configuration: FIGS. 1 to 14]
First, the appearance of the display device of this embodiment will be described. 1 to 3 are external views of the display device 1 of the present embodiment. 1 is a front view, FIG. 2 is a top view, and FIG. 3 is a side view.

  As shown in FIGS. 1 to 3, the display device 1 of the present embodiment includes a display case 4 provided with a display panel 3 for displaying information such as the current time, and a display case 4 for stably installing the display case 4. A housing having a base portion 5 is provided. In the example shown in FIGS. 1 to 3, the display panel 3 is configured to be a curved surface in order to improve visibility. For this reason, the display panel 3 is configured by a bendable display using an electrophoretic display element generally known as electronic paper, for example. The detailed configuration of the display panel 3 will be described later.

  In addition, the display device 1 according to the present embodiment includes an antenna 2a and a tuner as receiving means for receiving an earthquake early warning that will be described later. In the example shown in FIGS. 1 to 3, the antenna 2 a protrudes from the outside of the housing. However, the antenna 2 a may be built in the housing. As shown in FIG. 2, the display device 1 of the present embodiment includes operation switches 6 and 7 for performing various operations on the base portion 5 and the upper back of the display case 4, respectively.

Next, the internal configuration of the display device of this embodiment will be described. FIG. 4 is a block diagram of the display device 1 of the present embodiment. The display device 1 according to the present embodiment includes the antenna 2a and the tuner described above, and includes receiving means 2 that receives an emergency earthquake bulletin including information on the occurrence time, occurrence position, and scale of the earthquake. In addition, the display device 1 according to the present embodiment includes time measuring means 11 for measuring the current time.
Further, the display device 1 of the present embodiment includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like, and includes a control unit 10 that performs various calculations and controls each device. Prepare. The control means 10 is connected to the receiving means 2, the time measuring means 10 and the operation switches 6 and 7, and each information is input to the control means 10 from each. As will be described later, the control means 10 calculates earthquake information from each information, and functions as an earthquake information acquisition means.

  Furthermore, the display device 1 according to the present embodiment includes the display panel 3 described above, a countdown LED 8 in which light emitting elements are arranged, and an illumination unit 9 that illuminates the display panel 3. The control means 10 is connected to the display panel 3, the countdown LED 8 and the illumination means 9, and controls each of them. Detailed configurations of the display panel 3, the countdown LED 8, and the illumination means 9 will be described later.

Next, the configuration of the countdown LED 8 of the display device 1 of the present embodiment will be described. FIG. 5 is an explanatory diagram showing the configuration of the countdown LED 8. As shown in FIG. 5, the countdown LED 8 includes a plurality of light emitting elements (LEDs 8 a, 8 b, 8 c) of different colors arranged around the display panel 3 inside the display case 4.
In the example shown in FIG. 5, the LEDs 8 a, 8 b, and 8 c are arranged at positions obtained by dividing the periphery of the display panel 3 by 60 parts. An LED 8a (for example, a red LED) is arranged at the upper center, and after four LEDs 8c (for example, a white LED) are arranged clockwise based on the LED 8a, one LED 8b (for example, a blue LED) is repeatedly arranged in order. To do.

Further, the red LED 8a and the blue LED 8b are configured to have a larger light emitting area than the white LED 8c.
In addition, when each LED 8a, 8b, 8c is turned on, the emitted light is transmitted through the display case 4, so that the lighting of each LED can be confirmed from the outside of the display case 4, and when each LED is turned off, The resin and paint that form the display case 4 are configured so that the LEDs cannot be seen from the outside of the display case 4. Thereby, lighting of each LED8a, 8b, 8c can be emphasized and visibility can be improved.
Each LED 8 uses a different color in order to improve visibility, and is not limited to red, blue, and white as described above, and may be other colors. Further, the LEDs 8 may have the same color, and the LEDs 8a, 8b, and 8c may have different light emission areas.

  Next, the structure of the illumination means 9 of the display apparatus 1 of this embodiment is demonstrated. FIG. 6 is an explanatory diagram showing the configuration of the illumination LED 9. As shown in FIG. 6, the display device 1 includes a plurality of illumination means 9 that are arranged around the display panel 3 and illuminate the display panel 3 from the front side as indicated by arrows. Each illumination unit 9 includes, for example, a plurality of LED elements of red, blue, and green, and can implement illumination light of various colors by electrically controlling the light emission degree of the LED elements of each color. it can.

Next, the configuration of the display panel 3, the illumination unit 9, and the circuit board to which the display panel 3 and the illumination unit 9 are connected in the display device 1 of the present embodiment will be described in detail with reference to FIGS. To do.
7 and 8 are perspective views showing configurations of the display panel 3, the illumination means 9, and the circuit board 12. FIG. 7 shows a state seen from the front side of the display device 1, and FIG. 8 shows a state seen from the back side of the display device 1. 9 and 10 are plan views showing configurations of the display panel 3, the illumination means 9, and the circuit board 12. FIG. 9 shows a state seen from the front side of the display device 1, and FIG. 10 shows a state seen from the back side of the display device 1.

FIG. 11 is a plan view of the circuit board 12 and shows a state viewed from the front side of the display device 1.
FIG. 12 is a cross-sectional view taken along the line AA ′ of FIG. 13 and 14 are sectional views taken along the line BB 'in FIG. 13 shows the entirety of the display panel 3, the illumination means 9, and the circuit board 12, and FIG. 14 shows the vicinity of the illumination means 9 in an enlarged manner.
In FIG. 7, a diffusion frame 19 described later is not shown but a fixing frame 18 described later is shown because of a problem in drawing display. Similarly, in FIGS. 9 and 12 to 14, the fixing frame 18 is not shown, but the diffusion member 19 is shown.

As shown in FIG. 7, the display panel 3 is fixed to the circuit board 12 by a fixed frame 18. Here, as described above, the display panel 3 is a bendable display panel using, for example, an electrophoretic display element, and is fixed in a curved state as shown in FIG.
As shown in FIG. 7, the illumination means 9 is fixed to a predetermined position around the display panel 3 by a fixed frame 18. Here, as shown in FIG. 14, the illumination means 9 has a configuration in which an illumination LED 9a is mounted on an illumination board 9b. As described above, the illumination LED 9a includes, for example, a plurality of LED elements of red, blue, and green in order to realize illumination light of various colors.

Here, the configuration of the circuit board 12 will be described. As shown in FIG. 11, the circuit board 12 has an LED mounting region 12a formed in an annular shape in the vicinity of the peripheral edge. The countdown LEDs 8a to 8c described above are mounted on the LED mounting portions 12aa in the LED mounting area 12a. In addition, the circuit board 12 has an opening 12b and an opening 12c in a region inside the LED mounting region 12a. The circuit board 12 is provided with electronic components such as a CPU, a RAM, and a ROM (not shown) constituting the control means 10 described above.
Further, as shown in FIGS. 8, 10 and 12, a connector 15 is disposed in the vicinity of the opening 12b on the surface of the circuit board 12 opposite to the surface facing the display panel 3.

The display panel 3 is connected to the FPC 13, and the FPC 13 connected to the display panel 3 is connected to the connector 15 disposed on the surface opposite to the surface facing the display panel 3 via the opening 12 b of the circuit board 12. Thereby, the display panel 3 is connected to a CPU or the like constituting the control means 10 on the circuit board 12.
The illumination board 9b of the illumination means 9 is connected to the lead wire 16, and the lead wire 16 connected to the illumination board 9b faces the display panel 3 of the circuit board 12 through the opening 12c of the circuit board 12. Connect to the opposite side of the wire with solder. As a result, the illumination unit 9 is connected to a CPU or the like constituting the control unit 10 on the circuit board 12.

  Thus, in the display device 1 of the present embodiment, the display panel 3 and the surface opposite to the surface facing the display panel 3 of the circuit board 12 are connected by the FPC 13 via the opening 12b of the circuit board 12. . Therefore, a sufficient work space is secured around the connector 15 where the FPC 13 and the circuit board 12 are connected, and the connection and removal work between the display panel 3 and the circuit board 12 can be easily performed.

In the above-described embodiment, the example in which the FPC 13 is connected to the circuit board 12 by the connector 15 has been described. Alternatively, the FPC 13 may be connected to the circuit board 12 by soldering or the like. Further, the display panel 3 may be configured to be connected to the circuit board 12 by other connection bodies such as lead wires instead of the FPC.
Even with such a configuration, a sufficient work space is secured around the connection portion between the connection body and the circuit board, and the connection and removal of the display panel 3 and the circuit board 12 can be easily performed. It becomes.

  Further, in the display device 1 of the present embodiment, the lead wire 16 in which the illumination substrate 9b of the illumination means 9 and the surface opposite to the surface facing the display panel 3 of the circuit substrate 12 pass through the opening 12c of the circuit substrate 12. Connected by. Therefore, a sufficient work space is secured around the connection portion between the lead wire 16 and the circuit board 12, and the connection / removal work between the illumination means 9 and the circuit board 12 can be easily performed.

In the above-described embodiment, an example is shown in which the lead wire 16 and the circuit board 12 are connected by solder. However, apart from this, the lead wire 16 and the circuit board 12 may be connected by a connector or the like. Good. Moreover, the structure which the illumination means 9 connects with the circuit board 12 not with a lead wire but with other connection bodies, such as FPC, may be sufficient.
Even with such a configuration, a sufficient working space is secured around the connection portion between the connection body and the circuit board, and the connection / removal work between the lighting means 9 and the circuit board 12 can be easily performed. It becomes.

  As shown in FIG. 9, the display device 1 according to the present embodiment includes a frame-shaped diffusion member 19 formed of a light diffusing material inside each illumination unit 9. Thereby, as shown by the arrow of FIG. 9, the light emitted from each illumination means 9 can be diffused and irradiated to the display panel 3.

[Description of Operation: FIGS. 15 to 16]
Next, the operation of the display device 1 of the present embodiment will be described. The display device 1 of the present embodiment operates in the normal display mode in a state where the earthquake early warning is not received (normal state). FIG. 15 is an explanatory diagram showing the state of the display device 1 in the normal display mode. As shown in FIG. 15, in the normal display mode, the display panel 3 displays the current time, the current date, the current day of the week, etc. like a general clock.

  Further, in the normal display mode, the display panel 3 is illuminated by the illumination means 9 as indicated by an arrow (broken line) in FIG. At this time, the illumination means 9 illuminates the display panel 3 with white illumination light, for example, by turning on all red, blue, and green LED elements. Further, in the normal display mode, the countdown LED 8 is turned off.

  The display device 1 according to the present embodiment operates in the earthquake display mode when the earthquake early warning is received by the receiving unit 2. FIG. 16 is an explanatory diagram illustrating a state of the display device 1 in the earthquake display mode. From the earthquake early warning received by the receiving means 2, the current position information acquired by operating the operation switches 6 and 7, and the current time information by the time measuring means 11, the control means 10 Calculate the time to reach the movement.

  In the earthquake display mode, the control means 10 illuminates the display panel 3 with the illumination means 9 with a color corresponding to the calculated predicted seismic intensity, as indicated by an arrow (broken line) in FIG. For example, by electrically controlling the light intensity of the red and green LED elements, the predicted seismic intensity is green when the seismic intensity is 3 or less, orange when the seismic intensity is 4 or more and less than 5 strength, and the seismic intensity is 5 or more. In this case, the display panel 3 is illuminated with red illumination light.

  Further, the control means 10 displays the calculated predicted seismic intensity and margin time on the display panel 3. Furthermore, the control means 10 lights the number of countdown LEDs 8 according to the calculated margin time. Specifically, among the LEDs 8a, 8b, and 8c disposed around the display panel 3, the LED 8a disposed at the upper center portion and the LEDs 8b and 8c having a margin time in the clockwise direction from the LED 8a are turned on. For example, when the margin time is 23 seconds, as shown in FIG. 16, the LEDs 8a and 23 LEDs 8b and 8c are turned on clockwise from the LEDs 8a.

  As described above, the display device 1 according to the present embodiment includes the countdown LED 8 including a plurality of light emitting elements (LEDs) arranged side by side, and in the earthquake display mode, the number of countdowns corresponding to the time until the main motion is reached. The LED 8 is turned on and the margin time is counted down. As a result, human eyes are associated with the clock face, and the visibility is higher compared to the conventional technology that displays information using only the characters. It becomes possible.

  Note that FIG. 16 shows an example in which one LED 8 is turned on to indicate one second of the surplus time, but the present invention is not limited to this. For example, one second of the surplus time is represented by one. The LED 8 may be turned on, or one second of the extra time may be indicated by turning on the two LEDs 8. Further, the number of LEDs 8 that are turned on according to the spare time may be set using the operation switches 6 and 7 and the like.

  In the embodiment described above, the earthquake early warning is received, the predicted earthquake intensity and the time to reach the main motion are calculated from the received earthquake early warning, the current position information, and the current time information, and the calculated prediction An example of displaying seismic intensity and margin time was shown. However, the present invention is not limited to this. For example, the predicted seismic intensity and the time to reach the main motion are calculated by a device different from the display device, and the display device is calculated by another device. The predicted seismic intensity and margin time may be received, and the received predicted seismic intensity and margin time may be displayed.

  In the above-described embodiment, the earthquake warning device that receives the earthquake early warning and displays the prediction information of the earthquake shake has been described as an example. However, the present invention is not limited to this, and can be applied to display devices for various uses in which light emitting elements such as LEDs are arranged around the display panel for the purpose of decoration, auxiliary lighting, and the like. It is.

  In the display device of the present invention, the illuminating means for illuminating the display panel and the surface opposite to the surface facing the display panel of the circuit board are connected by a connection body through the opening of the circuit board. For this reason, even in a configuration in which parts are arranged around the display panel, a sufficient working space is secured around the connection portion between the connection body and the circuit board, and connection / removal of the illumination means and the circuit board is ensured. Work can be easily performed.

It is a front view of the display apparatus of this embodiment. It is a top view of the display apparatus of this embodiment. It is a side view of the display apparatus of this embodiment. It is a block diagram of the display apparatus of this embodiment. It is explanatory drawing which shows the structure of countdown LED of the display apparatus of this embodiment. It is explanatory drawing which shows the structure of the illumination means of the display apparatus of this embodiment. It is a perspective view which shows the structure of a display panel, an illumination means, and a circuit board. It is a perspective view which shows the structure of a display panel, an illumination means, and a circuit board. It is a top view which shows the structure of a display panel, an illumination means, and a circuit board. It is a top view which shows the structure of a display panel, an illumination means, and a circuit board. It is a top view which shows the structure of a circuit board. It is sectional drawing which shows the structure of a display panel, an illumination means, and a circuit board. It is sectional drawing which shows the structure of a display panel, an illumination means, and a circuit board. It is sectional drawing which shows the structure of a display panel, an illumination means, and a circuit board. It is explanatory drawing which shows the state of the normal display mode of the display apparatus of this embodiment. It is explanatory drawing which shows the state of the earthquake display mode of the display apparatus of this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Receiving means 2a Antenna 3 Display panel 4 Display case 5 Base part 6, 7 Operation switch 8, 8a, 8b, 8c Countdown LED
9 Illumination means 9a Illumination LED
9b Illumination board 10 Control means 11 Timing means 12 Circuit board 12a LED mounting region 12aa LED mounting part 12b Opening part 12c Opening part 13 FPC
15 Connector 16 Lead wire 18 Fixed frame 19 Diffusion member

Claims (6)

A display panel;
Illumination means for illuminating the display panel;
A circuit board having an annular component mounting region and an opening formed in an inner region of the component mounting region;
A display device comprising: the illuminating unit; and a connection body that connects the surface of the circuit board opposite to the surface facing the display panel via the opening. The display device according to claim 1, further comprising a connector connected to the connection body on a surface opposite to the surface facing the display panel of the circuit board. The display device according to claim 1, wherein the connection body is a lead wire. The display device according to claim 1, wherein the illumination unit illuminates the display panel from the front side. The display device according to claim 1, wherein light emitting elements are arranged side by side in the component mounting region. An earthquake information acquisition means for acquiring time to reach the main motion of the earthquake;
Control means for controlling each light emitting element,
6. The display device according to claim 5, wherein in the earthquake display mode, the control unit displays the margin time by turning on the number of the light emitting elements according to the time until the arrival of the main motion.

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