JP4834914B2 - Luminescent display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a light emitting display device that is provided in an electronic device or the like and displays an operation state by light emission of a light emitting element such as an LED.
[0002]
[Prior art]
As personal computers (personal computers), for example, a home network of 5 GHz band as proposed by infrared or IEEE 802.11, a LAN of 2.45 GHz band, or a wireless network system such as Bluetooth of a small-scale wireless communication system has been proposed. Yes. In such a wireless network system, a wireless repeater including a light emitting display unit that displays a mutual connection state and a transmission / reception state of an information signal is provided on a computer main body and peripheral devices.
[0003]
In the personal computer system, the wireless repeater 50 shown in FIGS. 3 and 4 is connected to connection ports of a computer main body and peripheral devices via a 10 base cable. In the personal computer system, information signals and the like are transmitted and received between the computer main body and peripheral devices via the wireless repeater 50 facing each other. Although not described in detail, the wireless repeater 50 is provided with a power supply circuit, a wireless transmission / reception function, and the like in a thin box-shaped casing 51. The wireless repeater 50 includes an entire box-shaped upper case 52 whose casing 51 is open at the bottom, and a lower case 53 that is assembled by closing the bottom. A wiring board 54 on which a wireless transmission / reception circuit unit 55 and the like are mounted on a lower case 53 is attached to the wireless repeater 50.
[0004]
The wireless repeater 50 is provided on the front side of the upper case 52 with a light emitting display unit 56 that emits and displays a connection state between connected devices in a wireless run, a power on / off state, and an information signal transmission / reception state. The light emitting display unit 56 is provided corresponding to each display function, and includes four rectangular opening portions formed across the front surface 52a and the upper surface 52b of the upper case 52. In detail, the light-emitting display unit 56 is formed by inserting a light guide member 57 formed of a translucent material such as acrylic resin into a rectangular opening formed across the front surface 52a and the upper surface 52b of the upper case 52. .
[0005]
In the wireless repeater 50, an element substrate 58 in which a light emitting element 59 is mounted on a wiring substrate 54 corresponding to the light emitting display unit 56 is attached. Each light emitting element 59 is disposed to face the inner surface of each light guide member 57, and the emitted light emitted as shown by the arrows in FIG. 4 is guided to each light guide member 57 and exposed from the outer peripheral surface. The light emitting display unit 56 is caused to emit light.
[0006]
[Problems to be solved by the invention]
As described above, in the wireless repeater 50, as shown in FIG. 4, the light emitting element 59 is disposed in the housing 51 with its main axis facing the front surface 52a of the upper case 52. Therefore, in the wireless repeater 50, the emitted light emitted from the emission surface 59a of the light emitting element 59 is exposed mainly from the front surface 52a side of the upper case 52. For this reason, in the wireless repeater 50, the light-emitting display unit 56 cannot perform uniform light-emitting display because the front surface 52a side is bright and the upper surface 52b is slightly dark.
[0007]
Since the wireless repeater 50 is placed on a desk or the like, an operator such as a personal computer confirms the light emitting display unit 56 obliquely from the front side 52a side. Therefore, the wireless repeater 50 does not perform effective light emission display because the light emission display unit 56 on the upper surface 52b side is slightly dark from the above-described configuration, and confirms whether or not the control signal and the like are accurately transmitted and received. There was a problem that it could not be performed sufficiently.
[0008]
In general, a predetermined surface of the light emitting display device is configured as a light emitting display surface, and a light emitting element is disposed inside corresponding to the light emitting surface. When the light-emitting device has a light-emitting display surface that extends across two surfaces, the front surface 52a and the upper surface 52b, which are orthogonal to each other like the wireless repeater 50 described above, the light from the light-emitting element is more exposed from one of the display surfaces. For this reason, there is a problem that light emission display with uniform luminance or visibility from a distance cannot be maintained.
[0009]
For example, when the light emitting display device adopts a configuration in which a light emitting element is provided corresponding to each light emitting display surface as a countermeasure, the structure becomes complicated and large, and the internal heat generation becomes large. It cannot be used for devices such as 50 that require miniaturization.
[0010]
In the light emitting display device, the directivity of the outgoing light emitted from the light emitting element is large, and the optical main axis is exposed mainly on the front side with respect to the light emitting display surface. For this reason, in the light emitting display device, even when the light emission state is clearly visible by confronting the light emission display surface from the front, the light emission state is clearly different when viewed from an obliquely forward position. There was a problem that became difficult.
[0011]
Therefore, according to the present invention, in a light-emitting display device in which two orthogonal side surfaces are configured as light-emitting display surfaces, each light-emitting display surface is light-emitting and displayed with uniform and sufficient luminance by a common light-emitting element, so that the remote It has been proposed to provide a light emitting display device that can improve the visibility of the light emitting device and can clearly see the light emitting state even from an oblique position lateral to the light emitting display surface. .
[0012]
[Means for Solving the Problems]
The light-emitting display device according to the present invention that achieves the above-described object includes a housing in which a light-emitting opening is formed over an upper surface portion and a front surface portion, a light-emitting element disposed in the housing, and one end side of the light-emitting display device. A light-emitting display surface is formed by being fitted into the opening, and the other end is opposed to the light-emitting element and is guided by a light-transmitting material that forms a light-guiding unit that guides the emitted light emitted inside. An optical member, and the light guide member has an arc in which an upper end portion of the light emitting display surface forms substantially the same plane as the upper surface portion and a front upper end portion that forms substantially the same plane as the front surface portion. The outer peripheral side surface on the back side is formed by a plurality of planes having different angles, and the plurality of planes are a first plane that is substantially perpendicular to the light guide section , and the first plane 1 above the plane of the first plane, and the front surface of the first plane. A second plane configured as an inclined plane that is inclined toward the upper surface, and an inclined plane that is provided above the second plane and is inclined further toward the front portion than the second plane. Each plane is surface-emitted by the emitted light that is emitted from the light emitting element and guided to the inside through the light guide member, and the first to third planes are The surface light emission of any one of the first to third planes is arranged at an angle at which the light emission display surface can be visually recognized from the upper end portion and the front upper end portion of the light emitting display surface .
[0013]
According to the light emitting display device according to the present invention configured as described above, the light emitted from the light emitting element guided to the inside of the light guide member via the light guide portion is incident on the outer peripheral surface of the light guide member. Since each plane formed at different angles is surface-emitted, light emission display with sufficient luminance is performed on both the upper surface side and the front surface side, and the light emission state is also from an oblique direction lateral to the light emission display surface. Is visible.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The light-emitting display device shown as the embodiment is also connected to a connection port of a main body device such as a computer main body or various peripheral devices via a 10 base cable or a power cable, and information signals exchanged between the main body devices are wirelessly transmitted. It is applied to the radio repeater 1 that relays. The wireless repeater 1 includes, for example, a power supply circuit unit and a wireless transmission / reception circuit unit, and displays a power-on state, a connection state between devices, and a transmission / reception state such as an information signal.
[0015]
Although not shown, the wireless repeater 1 has a built-in wireless transmitter / transmitter, and as shown in FIG. 1, an upper case 3 formed in an overall box shape and a lower case 4 that is assembled with its bottom portion closed. And a housing 2 configured in a thin box shape as a whole. The upper case 3 is formed with a light emitting display unit that emits and displays the operation state of each function described above across the upper surface portion 3a and the front surface portion 3b facing the connected radio repeater 1 to be connected. . The light-emitting display part is composed of one light-emitting display part corresponding to each function, and the four light-emitting display parts are opened in a rectangular slit shape across the upper surface part 3a and the front surface part 3b orthogonal to each other. It consists of a light emitting display port 5.
[0016]
As shown in FIG. 1, a plurality of pedestal portions 6 are integrally formed on the inner surface of the lower case 4, and a wiring board 7 on which a wireless transmission / reception circuit portion (not shown) is mounted is mounted and supported on these pedestal portions 6. Has been. On the wiring board 7, four light emitting elements 8 are mounted in parallel with each other at positions corresponding to the respective light emitting display ports 5 of the light emitting display portion in the vicinity of the end portion facing the front surface portion 3 b of the housing 2. . Each light emitting element 8 is selectively turned on by an output from a driver circuit (not shown) mounted on the wiring board 7 when an information signal transmission / reception operation is performed between the paired wireless repeaters 1.
[0017]
Although not described in detail, an attachment member 9 assembled to the housing 2 is extended on the wiring board 7 so as to cover each light emitting element 8, and each light emitting display port 5 and each light emission are provided on this attachment member 9. Four light guide members 10 are attached so as to correspond to the elements 8 respectively. Each light guide member 10 is formed into a block shape having a substantially wedge shape as a whole by a synthetic resin material such as an acrylic resin or a polycarbonate resin which is transparent or translucent and has good light transmittance. The light guide member 10 is formed to have a thickness substantially equal to the opening groove width of the light emitting display port 5 of the upper case 3.
[0018]
As shown in FIG. 1, the light guide member 10 has such a length that the surface of the upper end portion 10 a forms substantially the same surface as the upper surface portion 3 a of the upper case 3 when the wiring board 7 is assembled to the housing 2. It is formed with this. In the state in which the wiring board 7 is assembled to the housing 2, the light guide member 10 has an upper end portion 10c of one side surface portion (front surface portion) 10b facing the front surface portion 3b of the upper case 3 substantially flush with the front surface portion 3b. Is formed so as to be bent. The light guide member 10 is formed as a circular arc surface in which an upper end portion 10a and a front upper end portion 10c are continuous to form a light emitting display surface 11.
[0019]
Each light guide member 10 is guided to guide the emitted light from the light emitting element 18 to the inside when the lower end surface thereof faces the light emitting element 18 in a state of being attached to the wiring board 7 via the attachment member 9. The unit 10d is configured. In each light guide member 10, a light emitting element housing recess 13 is formed in the light guide portion 10 d so that the light emitting element 18 faces the mounting recess 12. As will be described later, the light guide member 10 guides the emitted light emitted from the light emitting element 8 from the light guide unit 10d to the inside.
[0020]
By the way, the other side surface portion (back surface portion) 10e in the width direction facing the front surface portion 10b is provided on the light guide member 10 as shown in FIGS. 1 and 2. 14c is combined. The lowermost first flat surface 14a is formed as a substantially vertical surface. The second flat surface 14b is refracted above the first flat surface 14a as an inclined surface inclined toward the front side. The third plane 14c is refracted and continuously provided above the second plane 14b as an inclined plane inclined at an even greater angle and inclined toward the front side.
[0021]
As described above, the light guide member 10 guides the emitted light emitted from the light emitting element 11 from the light guide unit 10d to the inside, but a part of the emitted light toward the back surface part 10e is formed on the flat surfaces 14a to 14c. The light is incident on each of the flat surfaces 14a to 14c to emit light. In the light guide member 10, the planes 14 a to 14 c formed on the back surface portion 10 e are formed at different angles. Therefore, the light from the planes 14 a to 14 c that emit light is exposed to the light emitting display surface 11 side. To do.
[0022]
In the wireless repeater 1, the predetermined light emitting element 8 is turned on by receiving the information signal transmitted from the other party. In the wireless repeater 1, the emitted light emitted from the light emitting element 8 is incident on each of the flat surfaces 14 a to 14 c via the light guide portion 10 d inside the corresponding light guide member 10 and is surface-emitted, and from each plane. The light emission display in a state where a predetermined reception operation is performed is performed by exposing light from the light emission display surface 11. In the wireless repeater 1, the upper end portion 10 a constituting the light emitting display surface 11 of the light guide member 10 is fitted into the light emitting display port 5 opened across the upper surface portion 3 a and the front surface portion 3 b of the housing 2. Thus, the light emission display is simultaneously performed on the two side surfaces of the upper surface portion 3a and the front surface portion 3b.
[0023]
In the wireless repeater 1, as described above, the light emitted from the light emitting element 8 by the light guide member 10 is incident on the flat surfaces 14a to 14c so as to emit light and is guided to the light emitting display surface 11. The light is efficiently guided and the light emitting display surface 11 shines with sufficient luminance. The wireless repeater 1 is placed on a desk or the like, and the light emitting display surface 11 is visually recognized by the operator of the personal computer from obliquely upward on the front side. However, the control signal is generated when the upper surface portion 3a and the front surface portion 3b shine. The transmission / reception state of is surely visually recognized.
[0024]
The wireless repeater 1 is often arranged so that an operator of a personal computer can visually recognize from the diagonally upper side of either the left or right side of the front surface of the light emitting display surface 11 due to space limitations on the desk. In the wireless repeater 1, as described above, a part of the light emitted from the light emitting element 8 guided to the inside of the light guide member 10 through the light guide portion 10 d has a different angle from the back surface portion 10 e. Each plane emits light by being incident on the formed flat surfaces 14a to 14c, and any one of the surfaces 14 emits bright light regardless of which direction the light emitting display surface 11 is viewed. The transmission / reception state of the information signal can be reliably visually recognized even from the side of the display surface 11.
[0025]
In the above-described embodiment, it is needless to say that the present invention is not limited to the wireless repeater 1 and is employed in various electronic devices. Needless to say, the present invention is also applied to various light-emitting display devices that display an operation state or the like by lighting the light-emitting element 8. In addition, the light guide member 10 is attached to the wiring board 7 via the attachment member 9. However, the light guide member 10 is not limited to this structure, and an appropriate attachment structure is adopted and disposed inside the housing 2. Of course. Further, the light guide member 10 is formed by appropriately adjusting the number of planes 14 and the inclination angle in accordance with the opening shape and size of the light emitting display port 5, the interval between the light emitting elements 8, and the like.
[0026]
【The invention's effect】
As described above in detail, according to the light emitting display device of the present invention, the light emitted from the light emitting element is efficiently guided to the light emitting display surface formed on the housing via the light guide member. As a result, a light-emitting display such as the operating state of the main unit is performed. According to the light emitting display device, the emitted light from the guided light emitting element is efficiently guided to the light emitting display surface by causing a plurality of planes having different angles to the outer peripheral surface of the light guide member to emit light. Configured as follows. Therefore, according to the light-emitting display device, the light is incident on a plurality of planes 14 having different angles, and the plane 14 emits light, so that any one of the planes 14 emits bright light regardless of the direction of the light-emitting display surface 11. As a result, light emission display with sufficient brightness and uniform brightness is performed on both the upper surface side and the front surface side, and the light emission state can be viewed even from an oblique side to the light emission display surface. As a result, the visibility is improved.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an essential part of a wireless repeater for a wireless run shown as an embodiment of the present invention.
FIG. 2 is a longitudinal sectional view of a light guide member provided in the wireless repeater.
FIG. 3 is a perspective view of a wireless repeater.
FIG. 4 is a longitudinal sectional view of a main part of a conventional wireless repeater.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Wireless repeater 2 Case 3 Upper case 3a Upper surface part 3b Front surface part 4 Lower case 5 Light emission display port 7 Wiring board 8 Light emitting element 10 Light guide member 10a Upper end part 10b Front surface part 10d Light guide part 10e Back surface part 11 Light emission display surface 14 Plane

Claims (1)

A housing in which a light emitting opening is formed over the upper surface and the front surface;
A light emitting device disposed inside the housing;
One end side is fitted into the light emitting opening to form a light emitting display surface, and the other end is opposed to the light emitting element, and a light transmissive material that constitutes a light guide portion that guides outgoing light emitted inside. A molded light guide member,
The light guide member is
The light emitting display surface is formed as an arc surface in which an upper end portion that forms substantially the same plane as the upper surface portion and a front upper end portion that forms substantially the same plane as the front surface portion are continuous,
The outer peripheral side surface on the back side is constituted by a plurality of planes having different angles,
The plurality of planes are
A first plane that is substantially perpendicular to the light guide ;
A second plane configured as an inclined surface continuously provided above the first plane and inclined from the first plane toward the front surface;
A third plane that is provided continuously above the second plane, and is configured as an inclined surface that is further inclined toward the front portion than the second plane;
Each plane is surface-emitted by the emitted light emitted from the light emitting element and guided to the inside through the light guide member,
The first to third planes are arranged at an angle at which surface emission of any of the first to third planes can be visually recognized from an upper end portion and a front upper end portion of the light emitting display surface. Luminescent display device.

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