JP2009146055A - Bidirectional irradiation structure in electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform irradiation to first and second orthogonal directions by using rays of light from one light emitting diode. <P>SOLUTION: A light emitting diode 33 is positioned and held by housings 24A to 24D. The housings 24A to 24D are mounted on corners 22A1 to 22A4 of an engagement part 22 of an equipment body 21, and a light emitting frame member 25 having light guides 25b1 to 25b4 is mounted. Thus, the head tip of each light emitting diode 33 is made to face edges of the light guides 25b1 to 25b4 in a first direction, and a portion of the peripheral face of the head of the light emission diode 33 is made to face a front side in the second direction. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a two-way irradiation structure in an electronic device.

  Conventionally, in an electronic device such as a crime prevention / disaster prevention device having a light emitting unit using a light emitting diode in the device main body, when the abnormality occurs, the light emitting unit is turned on or blinked by turning on or blinking the light emitting diode. There is known one that alerts a person's attention (see, for example, Patent Document 1).

  In such a case, in order to attract the user's attention, there is a demand for making the light-emitting portion into a rectangular frame shape and lighting or blinking the entire rectangular frame portion.

In order to satisfy this requirement, a plurality of light emitting diodes are provided at regular intervals for each part of the light emitting part having a rectangular frame shape, and the light emitting part is turned on or blinked by turning on or blinking each light emitting diode. It is common.
Japanese Patent Laid-Open No. 11-16070 (paragraph 0013 and FIG. 1)

  However, such a configuration is disadvantageous in terms of cost because the number of light emitting diodes increases.

  Therefore, the inventor forms the linear portion of the light emitting portion with a light guide material that guides light and makes the light emitting surface a rough surface that can transmit light, with the head portion of the light emitting diode facing the end portion, When light was irradiated, it was thought that a linear part could be light-emitted with one light emitting diode. And after further research, light is also emitted from the peripheral surface of the head of the light-emitting diode, so if the light is used, the linear portion where the light-emitting diode head tip irradiates light It was found that the light can be irradiated in the front direction not only at the end of the light source but also at the portion where the light emitting diode is provided.

  However, in that case, the light emitting diode has a head and a pair of legs, and the legs are electrically connected to an electric circuit or the like so that the head is accurately positioned at a predetermined position with respect to the device body. It is difficult to install.

  Therefore, the inventor conceived that the light-emitting diode can be positioned and held at a predetermined position with high positioning accuracy if the light-emitting diode is positioned and held in the housing and the housing is attached to the equipment body. is there.

  An object of the present invention is to provide a two-way irradiation structure in an electronic apparatus that can irradiate light from one light-emitting diode toward first and second directions orthogonal to each other.

  The invention of claim 1 is a two-way irradiation structure in an electronic device comprising a light emitting diode and a device main body to which the light emitting diode is attached, and the light emitting diode is positioned and held in a housing made of a translucent material, The housing is configured to be attached to the device main body, and with the housing attached to the device main body, the head end of the light emitting diode faces in the first direction, and the head peripheral surface of the light emitting diode is Among them, a part is directed in a second direction orthogonal to the first direction, and the light from the light emitting diode can be irradiated in the first and second directions orthogonal to each other. Here, as the light emitting diode, it is desirable to use a so-called high brightness light emitting diode.

  If it does in this way, a light emitting diode can be attached with respect to an apparatus main body with sufficient positioning accuracy by attaching a light emitting diode to an apparatus main body using a housing. Accordingly, since light is emitted also from the head peripheral surface of the light emitting diode, not only the light irradiation toward the first direction in which the head tip of the light emitting diode faces, but also the head of the light emitting diode. The light from the light emitting diode is also irradiated in the second direction in which a part of the peripheral surface is directed. Therefore, light from one light emitting diode can be effectively used to irradiate light in the first and second directions orthogonal to each other.

  According to a second aspect of the present invention, at least one of the first direction and the second direction may be configured such that an end portion of a light guide member that guides light to a predetermined position is disposed.

  In this way, by using the light guide member that guides light to a predetermined position, a structure that can emit light from the light emitting diodes in the first and second directions orthogonal to each other is effectively obtained. Can be used. That is, even if the light from the light emitting diode is irradiated in the first and second directions orthogonal to each other, the light guide member is used so that the light is finally irradiated in the same direction. it can.

  According to a third aspect of the present invention, the housing is configured to contact and hold the head peripheral surface of the light emitting diode, and the side of the housing facing the first direction is an opening. It can be.

  In this way, the housing is open on the side facing the first direction where strong light is emitted from the light emitting diode, so that the strong light can be efficiently irradiated in the first direction. it can.

  According to a fourth aspect of the present invention, the housing includes a first portion that holds a head portion of the light emitting diode and a leg portion of the light emitting diode in a predetermined orientation that enables electrical connection of the light emitting diode. It is preferable that the light emitting diode is electrically connected at the same time by attaching the housing to the device main body.

  In this case, the housing is attached to the device main body, so that the head of the light emitting diode is oriented in the first direction, and a part of the peripheral surface of the head of the light emitting diode is the second. In addition to being positioned so as to face the direction, the electrical connection of the light emitting diode (with the power supply circuit of the device body) is also made.

  According to a fifth aspect of the present invention, the housing has a configuration in which light shielding processing or reflection processing is performed on a portion of the head peripheral surface of the light emitting diode other than the portion facing the second direction. preferable.

  In this case, since the light shielding process or the reflection process is performed on the portion of the head peripheral surface of the light-emitting diode other than the portion facing the second direction, the portion other than the second direction from the head peripheral surface is provided. The light irradiated in the direction is also directed in the second direction, and can be efficiently irradiated in the second direction.

  The apparatus main body includes a rectangular frame-shaped engagement receiving portion having four linear portions and four corners connecting them, and the linear portion of the engagement receiving portion. On the other hand, a light guide member having a light emitting surface that is a rough surface that can transmit light is provided, while the housing is provided at a corner of the engagement receiving portion to form a light emitting portion having a rectangular frame shape, The edge part of the said light guide member is arrange | positioned in the 1st direction of the said housing, and it can be set as the structure which the outer surface of the said housing used as the said 2nd direction faces the front side.

  If it does in this way, the rectangular frame-shaped light emission part can be easily comprised in an electronic device with the four housings and four light guide members which hold | maintain a light emitting diode. Therefore, a rectangular frame-shaped light emitting portion can be made to emit light with a small number of light emitting diodes.

  According to a seventh aspect of the present invention, the light emitting section preferably includes a cover made of a light transmissive material and constituting an outer surface.

  In this way, the light-emitting surface and the housing that are light-transmitting rough surfaces and the housing can be concealed by the cover without impairing the light-emitting function.

  Since the present invention is configured as described above, by attaching a housing for positioning and holding the light emitting diode to the apparatus main body, not only in the first direction in which the head end of the light emitting diode faces, but also the light emitting diode. The light from the light emitting diode can be irradiated with high accuracy even in the second direction in which a part of the peripheral surface of the head faces. Therefore, it is possible to irradiate light from one light emitting diode in two directions.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the present invention is an emergency notification broadcasting terminal device that is an embodiment of an electronic device (receives earthquake early warning data from the Japan Meteorological Agency, predicts the seismic intensity of the installation location of this device and the time to arrival, immediately A case will be described in which the predicted seismic intensity is displayed and the predicted arrival time is notified by voice and notified by blinking in the light emitting unit). This device is installed on the terminal side of the CATV facility, and has an emergency notification function that notifies important information such as disaster information from government offices and fire stations through the transmission line in addition to the earthquake information notification function described above. In addition, it also has a function of receiving FM broadcasts in a normal state.

  FIG. 1 is a perspective view of an emergency notification broadcasting terminal device, which is an embodiment of an electronic device to which the present invention is applied, as seen from the front side, and FIG. 2 is a sectional view of the same part.

  As shown in FIGS. 1 and 2, the emergency notification broadcasting terminal device 1 has a display panel 11 disposed at the upper center of the front. The display panel 11 displays the current time when the radio power is off, the FM reception frequency when the radio power is on, and the predicted seismic intensity and the predicted arrival time when the earthquake early warning is received. A radio power lamp 17 that is turned on when the radio power is turned on is disposed at the lower left of the display panel 11. And six operation buttons 12A-12F are arranged in the lower part of the front center. They function as radio power buttons, selection buttons, channel selection buttons, volume buttons, etc., respectively.

  In addition, a rectangular frame-shaped speaker unit 13 is arranged around the center of the front surface where the display panel 11 and the operation buttons 12A to 12F are arranged, and a rectangular frame shape is formed outside the speaker unit 13 on the outer periphery of the device. The light emitting unit 14 is arranged. The outer surface of the light emitting part 14 is. It is formed by a rectangular frame-shaped cover 15 made of a translucent material.

  A hook 18 for wall mounting is provided at the upper part on the back side, and a stand 16 for desktop installation is provided at the lower part so that it can be raised and lowered. Thereby, this apparatus 1 can be used now in the state attached to the wall surface, or the state installed on the desk. Although not specifically shown, a light switch, a CATV input terminal, an AC adapter insertion terminal, and the like are provided at the lower part on the back side. It should be noted that the dry battery can be stored, and the dry battery can be used as a power source in an emergency.

  Then, the structure of the light emission part 14 is further demonstrated along FIGS.

  As shown in FIG. 3, the device main body 21 of the terminal device 1 (electronic device) is a rectangle having four corners 22A1, 22A2, 22A3, 22A4 and four linear portions 22B1, 22B2, 22B3, 22B4. A frame-shaped engagement receiving portion 22 is formed. In addition, fitting holes 22a1, 22a2, 22a3, and 22a4 are respectively formed in the four corner portions 22A1 to 22A4 so as to correspond to housings 24A, 24B, 24C, and 24D that hold two high-intensity light emitting diodes 33 described later. The housings 24A to 24D are fitted in the fitting holes 221a1 to 22a, respectively.

  In a state where the housings 24A to 24D are respectively engaged with the four corner portions 22A1 to 22A4 of the engagement receiving portion 22, the light emitting frame member 25 constituting the light emitting portion 14 is attached to the device main body 21, and the light emitting frame member A cover 15 is attached to cover 25 and the housings 24A to 24D. Since the housings 24A to 24D and the light emitting frame member 25 are concealed by the cover 15, the appearance of the housing 24A to 24D and the light emitting frame member 25 is not impaired.

  The light emitting frame member 25 is formed of a light guide material (for example, an acrylic resin material) that guides light. The four corner portions of the light emitting frame member 25 have four outer frame portions 25a1, 25a2, 25a3, and 25a4 into which the housings 24A to 24D are fitted, and four linear light guide portions therebetween. 25b1, 25b2, 25b3, and 25b4 are integrally provided. As shown in FIG. 4, these light guide portions 25 b 1 to 25 b 4 are semicircular cross-sectional shapes whose outer surfaces on the front side (light emitting side) are curved so as to protrude outward, and are light-transmitting rough surfaces. Has been.

  Subsequently, since the housings 24A to 24D have the same shape, the housing 24A will be described with reference to FIGS.

  The housing 24A has a substantially L shape when viewed from the front, and a front member 31 and a rear member 32 having recesses 31a and 32a corresponding to the head shape of the light emitting diode 33 are coupled to each other so that the head 33a and a pair of leg portions are combined. The two high-intensity light emitting diodes 33 having 33b and 33c are positioned and held. Since the housing 24A (the front member 31 and the rear member 32) is formed of a light-transmitting material, light from the head peripheral surface of the light-emitting diode 33 is received at the front side portion (the front member 31). Irradiated outside.

  The front side member 31 has two sets of engaging claw portions 31b, while the rear side member 32 has an engaged portion 32b with which the engaging claw portion 31b is detachably engaged. Thus, the front member 31 and the rear member 32 are integrated. In the integrated state, the light emitting diode 33 is held inside with the two members 31 and 32 sandwiching the peripheral surface of the head of the light emitting diode 33. In this held state, the side of the housing 24A on which the head tip of the light emitting diode 33 faces is an opening.

  The rear member 32 is also provided with an engagement pin 32c that is inserted into an engagement hole (not shown) of the device main body 21 when the rear member 32 is fitted into the fitting hole 22a1 of the corner portion 22A1.

  The housing 24A (the front member 31 and the rear member 32) is in contact with the head peripheral surface of the light emitting diode 33 to position and hold the head portion 33a (see the recesses 31a and 32a in FIG. 6). And a second portion S2 for positioning and holding the leg portions 33b and 33c of the light emitting diode 33 so as to be in a predetermined direction in which the light emitting diode 33 can be electrically connected (through holes 32d and 32e in FIG. 6). Reference). Then, by attaching each housing 24A to the device main body 21, the head end of each light emitting diode 33 faces the end of the light guide portion 25b1 or 25b4 in the first direction, and the head periphery of each light emitting diode 33 is A part of the surface (upper portion in this embodiment) faces the front direction (front direction) which is the second direction. Here, since the head portion 33a of the light emitting diode 33 is held at the portion where the front side member 31 and the rear side member 32 are joined to form a cylindrical shape, the front end of the head portion 33a to which the light of strong luminance is irradiated is directed. In the direction 1, the housing 24A has an opening so that the light having the high luminance is not attenuated by passing through the housing 24A.

  In this manner, by attaching the light emitting diode 33 using the housings 24A to 24D, the light from the light emitting diode 33 is simultaneously irradiated in the first and second directions orthogonal to each other in the lighting state. be able to.

  In particular, light from the front end side of the head 33a having a high luminance is used for the light emitting action of the light guide portions 25b1 to 25b4 having a wide light emission range, while light from the head peripheral surface having a lower luminance than the front end of the head 33a. Is used for light emission of the corner portions 22A1 to 22A4 having a narrow light emission range, and the luminance of the light emitting diode 33 at the front end of the head and the peripheral surface of the head is effectively used to emit light in a rectangular frame shape. The part 14 can be made to emit light effectively.

  Since the leg portions 33b and 33c of the light emitting diode 33 project through the through holes 32d and 32e and project downward, the housings 24A to 24D are attached to the device main body (corner portions 22A1 to 22A4). The two light emitting diodes 33 are also electrically connected to a power supply circuit (not shown) on the 21 side.

  Since it comprised as mentioned above, housing 24A-24D is fitted by corner | angular part 22A1-22A4 (fitting hole 22a1-22a4) of the engagement receiving part 22 of the apparatus main body 21, Then, the light emission frame member 25 is attached to it. The light guide portions 25b1 to 25b4 are disposed on the linear portions 22B1 to 22B4 of the engagement receiving portion 22 by attaching the outer frame portions 25a1 to 25a4 so as to be fitted to the outside of the housings 24A to 24D. By attaching the light emitting frame member 25, the end portions of the light guide portions 25b1 to 25b4 (light guide members) are arranged in the first direction of the respective housings 24A to 24D, and the housings 24A to 24D (front side) which are in the second direction The outer surface of the member 31) faces the front side.

  And the cover 15 is further attached to those outer sides (front side), and the rectangular frame-shaped light emission part 14 is formed in the outer periphery part of the apparatus main body 21. FIG.

  Thereby, when the light emitting diode 33 is turned on or blinked, the light from the head peripheral surface is irradiated to the outside through the outer surface of the front member 31 of the housings 24A to 24D, and the light from the head tip is guided to the light guide 25b1. ˜25b4 is propagated and irradiated so as to leak to the outside through the light emitting surface, and as a result, the entire light emitting portion 14 having a rectangular frame shape emits light.

  In addition to the embodiment described above, the present invention can be implemented with modifications as described below.

  (i) In the above embodiment, the light emitting surface is formed of a rough surface that can transmit light. However, the light emitting surface does not necessarily need to be formed of a rough surface, and light diffusion by mixing a light diffusing agent into the light guide material. It is also possible to configure the light emitting surface using the effect. In this case, it is sufficient to mix the light diffusing agent only at least near the outer surface serving as the light emitting surface.

  (ii) In the above embodiment, the housing is substantially L-shaped in plan view, and two light emitting diodes are positioned and held in one housing 24A to 24D. However, one light emitting diode 33 is provided in one housing. Can be positioned and held, and the two housings can be arranged in the corner portions 22A1 to 22A4 of the engagement receiving portion 22 in a fixed positional relationship.

  (iii) In the above-described embodiment, the light guide portions 25b1 to 25b4 are configured as a part of the light emitting frame member 25. It is also possible to provide the portion 22. In this case, since the outer frame portions 25a1 to 25a4 are eliminated from the corner portions 22A1 to 22A4, the shapes of the housings 24A to 24D are also changed accordingly.

  (iv) In the above-described embodiment, light shielding processing or reflection processing is performed on the portions of the housings 24A to 24D other than facing the second direction (for example, the rear member 32) on the peripheral surface of the head of the light emitting diode 33. By applying the light, the light emitted from the peripheral surface of the head in the direction other than the second direction is also directed in the second direction, so that the irradiation efficiency in the second direction by the light emitting diode 33 is further increased. It can also be increased.

  (v) In the above embodiment, the second portion S2 for positioning and holding the leg portions 33b and 33c of the light emitting diode 33 is constituted by the two through holes 32d and 32e into which the leg portions are respectively inserted. It is also possible to configure with one through hole (long hole) through which two legs are inserted. Further, as described in the above (i), when one light emitting diode is held by one housing, it is possible to use a guide groove or a guide recess into which the leg portion is fitted.

  (vi) In the above-described embodiment, the end portion of the light guide member is arranged only in the first direction. However, the present invention is not limited thereto, and is not limited to the first direction. The end portion of the light guide member may be arranged in the second direction as well. For example, as shown in FIG. 7, with respect to the light emitting diode 33, a linear light guide member 41 whose one end faces a part of the peripheral surface of the head and an L-shaped light guide whose one end faces the tip of the head. Using the member 42, the present invention can also be applied to a structure in which the other end portions (circular end surfaces) of the light guide members 41 and 42 are alternately arranged in series.

  (vii) Although the above embodiment is applied to an emergency notification broadcasting terminal device, the present invention is not limited to this, and a structure for irradiating in the first and second directions orthogonal to each other Needless to say, the present invention can also be applied to other electronic devices (for example, alarm devices and interphones).

It is the perspective view which looked at the emergency notification broadcasting terminal device which is one Embodiment of the electronic device to which this invention is applied from the front side. It is the same part sectional view. It is the same exploded perspective view. It is sectional drawing in the AA of FIG. It is a perspective view of a housing. It is a disassembled perspective view of a housing. It is explanatory drawing which shows other embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Emergency notification broadcasting terminal device 14 Light emission part 15 Cover 21 Equipment main body 22 Engagement receiving part 22A1-22A4 Corner | angular part 22B1-22B4 Linear part 24A-24D Housing 25 Light emission frame member 25a1-25a4 Outer frame part 25b1-25b4 Light guide part 31 Front member 32 Rear member 32d, 32e Through-hole 33 Light emitting diode 33a Head 33b, 33c Leg S1 1st part S2 2nd part

Claims (7)

A bidirectional illumination structure in an electronic device comprising a light emitting diode and a device main body to which the light emitting diode is attached,
The light emitting diode is positioned and held in a housing made of a translucent material, and the housing is configured to be attached to the device body.
In a state where the housing is attached to the device main body, the head tip of the light emitting diode is oriented in the first direction, and a part of the peripheral surface of the head of the light emitting diode is orthogonal to the first direction. A two-way irradiation structure in an electronic device, wherein the two-way irradiation structure is capable of irradiating light from the light emitting diodes in first and second directions orthogonal to each other.   2. The two-way irradiation in the electronic apparatus according to claim 1, wherein an end portion of a light guide member that guides light to a predetermined position is disposed in at least one of the first direction and the second direction. Construction. The housing is to be held in contact with the head peripheral surface of the light emitting diode,
3. The two-way irradiation structure for an electronic device according to claim 1, wherein an opening is formed on a side of the housing facing the first direction.   The housing holds a first portion for holding a head of the light emitting diode and a leg of the light emitting diode in a predetermined direction that allows electrical connection of the light emitting diode. The two-way irradiation structure in the electronic device according to claim 1, wherein the light-emitting diode is electrically connected simultaneously by attaching the housing to the device main body.   4. The light-shielding process or the reflection process is applied to a portion of the housing corresponding to a peripheral surface of the head of the light emitting diode other than a portion facing the second direction. 5. A two-way irradiation structure in the electronic apparatus according to 4. The device body includes a rectangular frame-shaped engagement receiving portion having four linear portions and four corners connecting the linear portions,
A light guide member having a light-emitting surface that is a light-transmitting rough surface is provided on the linear portion of the engagement receiving portion, while the housing is provided on a corner portion of the engagement receiving portion to form a rectangular shape. A frame-shaped light emitting part is formed,
The end portion of the light guide member is disposed in the first direction of the housing, and the outer surface of the housing in the second direction faces the front side. A two-way irradiation structure in the electronic device according to claim 1.   The two-way irradiation structure in the electronic device according to claim 6, wherein the light emitting unit includes a cover made of a light-transmitting material and constituting an outer surface.

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