JP5094936B2 - Electronic equipment - Google Patents

Description

  The present invention relates to an electronic device that can be preferably used as an in-vehicle device including an LED and an operation button such as an ETC on-vehicle device.

  In-vehicle devices mounted on automobiles are required to be further reduced in size and weight. In order to satisfy both miniaturization and quality, it is necessary to reduce the number of parts, reduce the number of work processes, and ensure stable assembly. In addition, differentiation by appearance design has become important, and high design is also required. On the other hand, in-vehicle devices such as ETC (Electronic Toll Collection System) in-vehicle devices are equipped with operation buttons for operation and prisms that emit light by LEDs (light-emitting diodes) to emit light around the buttons. In order to secure the luminance of the light emitted from the prism, it is necessary to fix and hold an optical member such as a prism as close to the LED as possible.

  As an electronic device of this type, a prism formed of a translucent material, a button fixed to the center of the prism, an insertion hole, and an insertion hole are loosely fitted in a holding hole formed in the panel. A translucent cover that is mounted on the panel so as to cover the holding hole with the button inserted, an LED provided on the board coupled to the panel and corresponding to the holding hole, and on the board A tact switch provided at a position distant from the LED, and one end rotatably provided on the substrate via a hinge, and the other end is opposed to the tact switch and supports the prism at an intermediate portion. There is one constituted by a movable part in which a through hole is formed at a corresponding position (see, for example, Patent Document 1).

  An operation device for a vehicle air conditioner provided with an operation button for operating the air conditioner and a display unit for displaying the operation function on the operation button is constituted by a convex portion formed on an embossed sheet, and the emboss A switch operation lever having a similar convex portion along the shape of the convex portion at a portion corresponding to the convex portion of the operation panel and a protrusion engaging with the switch is integrally formed by cutting, and the sheet is operated by operating the operation button. There is one in which a switch is operated via a switch operating lever that is elastically deformed (see, for example, Patent Document 2).

JP 2004-355951 A (summary of the first page, FIG. 1) JP 2009-78755 A (summary of the first page, FIG. 1)

  In the technique as described in Patent Document 1, the button, the prism, and the movable part are separate parts, which increases the number of parts and the number of work steps, leading to an increase in cost. Moreover, since it is necessary to affix an embossed sheet to an operation panel as a structure like patent document 2, in order to ensure the affixing strength, a comparatively wide plane part or a gentle curved part is required, It was difficult to attach to a complicated curved surface, etc., and there was a problem that the product was large and there were restrictions on the design.

  The present invention has been made in view of the above-described problems of the prior art, and provides an electronic device that is easy to assemble without increasing the number of parts, increasing costs, and restricting the design. It is aimed.

An electronic device according to the present invention operates a printed circuit board on which an LED and a switch are mounted, a light emission window in which the printed circuit board is accommodated and a light emitted from the LED is emitted to the outside, and the switch. An electronic device comprising: a case body provided with a button window through which an operation button is inserted; an optical member disposed in an optical path from the LED to the light exit window; and a support member that elastically supports the operation button. The case body is composed of a first case and a second case divided vertically with respect to the printed circuit board, and the optical member is disposed on an inner surface of one of the divided first case and second case. The operation button and the support member are locked, and in this state, the printed circuit board can be attached to one of the other predetermined parts of the first case and the second case. Together comprising consist light guide portion and a prism unit in which the optical member is integrally formed on the inner surface of the first case, a fixing portion of the optical member, a holding portion of the support member is provided, the first The two cases are provided with the positioning portion of the printed circuit board, the light exit window, and the button window .
In addition, an electronic device according to the present invention includes a printed circuit board on which an LED and a switch are mounted, a light emitting window that accommodates the printed circuit board and that emits light emitted from the LED to the outside, and the switch. An electronic device including a case body provided with a button window through which an operation button to be operated is inserted, an optical member disposed in an optical path from the LED to the light exit window, and a support member that elastically supports the operation button. The case body includes a first case and a second case which are divided vertically with respect to the printed circuit board, and the optical member is disposed on an inner surface of one of the divided first case and second case. The member, the operation button, and the support member are locked, and in this state, the printed circuit board can be mounted on the other predetermined portion of the first case and the second case. In addition, the optical member is composed of a light guide part and a prism part formed separately, and the light guide part, the support member, and the operation button are integrally formed on the inner surface of the first case. The second case is provided with a positioning part for the printed circuit board, the light exit window and the button window, and a holding part for the prism part, and the optical path of the prism part. The position of the incident surface is provided closer to the light exit window side than the end surface position on the light exit window side of the printed circuit board.

In the present invention, an optical member comprising a light guide body portion and a prism portion integrally formed on the inner surface of a first case that constitutes a case body that houses a printed circuit board on which an LED and a switch are mounted together with a second case. An LED mounted on the printed circuit board is provided by providing a fixing part and a holding part of a support member that elastically supports the operation button, and by providing a positioning part of the printed circuit board, a light emission window, and a button window in the second case. And interference with the optical member can be eliminated. For this reason, problems such as LED peeling and destruction are eliminated. In addition, the assembly can be improved without increasing the number of parts and the number of work steps. Furthermore, there is no cost increase or design restrictions.
Further, in the present invention, the light guide body and the prism formed separately on the inner surface of the first case, which together with the second case, accommodates the case body that accommodates the printed circuit board on which the LED and the switch are mounted. And a support member for elastically supporting the operation button, and an integrated member holding portion including the operation button. The second case includes a positioning portion for the printed circuit board, a light exit window, and a button window. In addition, the prism portion holding portion is provided, and the position of the incident surface of the optical path of the prism portion is closer to the light exit window side than the end surface position on the light exit window side of the printed circuit board, so that it is mounted on the printed circuit board. Interference between the LED and the optical member can be eliminated. For this reason, problems such as LED peeling and destruction are eliminated. In addition, the assembly can be improved without increasing the number of parts and the number of work steps. Furthermore, there is no cost increase or design restrictions.

1 is an exploded perspective view schematically showing an in-vehicle device as an electronic device according to Embodiment 1 of the present invention. It is principal part sectional drawing of the vehicle-mounted apparatus shown by FIG. It is a disassembled perspective view which shows roughly the principal part of the vehicle-mounted apparatus as an electronic apparatus which concerns on Embodiment 2 of this invention. It is principal part sectional drawing of the vehicle-mounted apparatus shown by FIG. It is sectional drawing which shows roughly the principal part of the vehicle-mounted apparatus as an electronic apparatus which concerns on Embodiment 3 of this invention. It is a disassembled perspective view which shows roughly the principal part of the vehicle-mounted apparatus as an electronic apparatus which concerns on Embodiment 4 of this invention. It is a disassembled perspective view which shows roughly the principal part of the vehicle-mounted apparatus as an electronic apparatus which concerns on Embodiment 5 of this invention.

Embodiment 1 FIG.
1 and 2 are views for explaining an in-vehicle device as an electronic device according to Embodiment 1 of the present invention. FIG. 1 is an exploded perspective view, and FIG. Here, a case where the in-vehicle device is an ETC in-vehicle device will be described as an example. In the figure, the in-vehicle device is a printed circuit board on which circuit parts including a case body 10 divided into an upper case (first case) 11 and a lower case (second case) 12, and a switch 22 such as an LED 21 and a tact switch are mounted. 20, an optical member 30 including a prism portion 31 that refracts light generated from the LED 21 and emits the light out of the case body 10, a light guide portion 32 that guides the light generated from the LED 21 toward the prism portion 31, and an in-vehicle device An operation button 41 for performing the above operations, a support member 42 for elastically supporting the operation button 41, and the like.

  The prism portion 31 and the light guide portion 32 constituting the optical member 30 are integrally formed of a light transmissive material in this example, and a light exit portion 31 a is formed at the tip portion of the prism portion 31. The optical member 30 is disposed in an optical path between the LED 21 and a light exit window 121a, which will be described later, and guides strong light with directivity of the LED 21 to the light exit window 121a and emits it as soft light from the light exit section 31a. A pair of claw-shaped fixing portions 11 a with holes for fixing the integrally formed optical member 30 project from the inner surface portion of the upper case 11, and both sides of the light guide portion 32 portion of the optical member 30. A hook portion 32a that engages with the fixing portion 11a protrudes from the surface. The optical member 30 is held and fixed to the upper case 12 by engaging the hook portion 32a and the fixing portion 11a.

  In this example, two sets of operation buttons 41 and switches 22 are provided. The two operation buttons 41 are provided integrally with the support member 42 and symmetrically in this example so as to be connected by a support member 42 formed in a generally U-shape. A pair of fixed claw portions 42 a project from the central portion of the U-shaped bottom side portion of the support member 42. On the inner surface of the upper case 11, a pair of holding parts 11 b are provided so as to engage with the fixing claw part 42 a and fix the support member 42 and the operation button 41 to the upper case 11. Further, two parallel sides of the U-shape of the support member 42 project inward so that pressing portions 42b for pressing the switch 22 face each other. In this example, when the operation button 41 is pressed, the U-shaped bottom portion of the support member 42 is elastically deformed so that it returns to the original position when the operation button 41 is released. .

  On the other hand, the upper case 11 and the lower case 12 have a shape that is roughly divided into two in the vertical direction with respect to the printed circuit board 20, and a front operation section 121 made of a design wall is located on one end surface of the lower case 12. Are integrally formed so as to protrude. The front operation section 121 includes a light exit window 121a through which the light exit section 31a (FIG. 2) provided at the tip of the prism section 31 is inserted, a button window 121b through which the head of the operation button 41 is inserted, an ETC card ( An insertion port 121c and the like (not shown) are provided. Further, convex portions 12a for positioning the printed circuit board 20 are provided on both side edges of the lower case 12, and positioning holes 20a are provided at corresponding positions on the printed circuit board 20. Since other components are the same as those of the conventional one, illustration and description are omitted.

  Next, the operation of the first embodiment configured as described above will be described along the assembly process. First, the hook member 32 a of the optical member 30 is engaged between the pair of fixing portions 11 a protruding from the inner surface of the upper case 11, and the optical member 30 is held by the upper case 11. Next, the fixed claw portion 42a of the support member 42 integrally formed with the two operation buttons 41 is engaged with the pair of holding portions 11b protruding from the inner surface of the upper case 11, thereby The support member 42 is held by the upper case 11. On the other hand, the printed circuit board 20 on which the circuit components including the LED 21 and the switch 22 are mounted is fixed to the lower case 12 so that the convex portion 12a of the lower case 12 fits into the positioning hole 20a of the printed circuit board 20.

  Next, the light exit portion 31 a of the optical member 30 held by the upper case 11 is inserted into the light exit window 121 a of the lower case 12, and the head of the operation button 41 at the distal end portion of the support member 42 held by the upper case 11. The upper case 11 is combined with the lower case 12 while entering the button window 121b of the lower case 12. In the combined state, the lower surface of the light guide portion 32 and the upper surface of the LED 21 are fixed with a minute gap held as shown in FIG. At the time of combining, the light guide body 32 is assembled to the LED 21 while moving from the upper right to the lower left, so that the LED 21 and the light guide 32 do not interfere with each other. The upper case 11 and the lower case 12 can be fixed using known appropriate fixing means such as a snap fitting means, screwing, or a combination thereof.

  As described above, according to the first embodiment, when the printed board 20 is attached to the lower case 12, and when the upper case 11 having the optical member 30 attached thereto is assembled to the lower case 12 to which the printed board 20 is attached. Since the LED 21 mounted on the printed circuit board 20 and the optical member 30 do not interfere with each other, the LED 21 is not peeled, broken or solder cracked, and the yield can be improved. Further, since no special parts are used, the assemblability can be improved without increasing the number of parts and the number of work steps. Moreover, since the front operation part 121 which consists of the design wall by the side of the lower case 12 can be set to a high position, design property is also improved. In addition, there are few restrictions on the design and the size can be reduced.

Embodiment 2. FIG.
3 is an exploded perspective view schematically showing a main part of an in-vehicle device as an electronic device according to Embodiment 2 of the present invention, and FIG. 4 is a cross-sectional view of the main part of the in-vehicle device shown in FIG. In the figure, the optical member 30 is composed of a prism part 31 and a light guide part 32 formed separately. In the assembled state, the prism portion 31 and the light guide portion 32 are arranged in series in the optical path so as to face each other through a small gap as shown in FIG. The incident surface 31b of the prism part 31 is formed by mutually parallel surfaces orthogonal to the optical axis (not shown). In FIG. 3, the LED 21 and the switch 22 on the printed circuit board 20 are not shown.

  For example, fixed hook portions 31c are provided on both side surfaces of the prism portion 31 so as to be bilaterally symmetric, and on the back side of the front operation portion 121, the prism portion 31 is engaged with the fixed hook portion 31c so that the lower case 12 is engaged. A hook holding portion 121d is provided for holding and fixing at a predetermined position. The light guide 32 is integrally formed of a light transmissive material together with the operation button 41 and the support member 42. The operation button 41 may be partially translucent so that characters, symbols, marks, and the like are displayed on the surface. As shown in FIG. 4, when viewed from the front operation unit 121 side, the position of the incident surface 31 b of the prism unit 31 is closer to the front side than the position of the end surface 20 b of the printed circuit board 20 on the front operation unit 121 side. Is provided. Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  In the second embodiment configured as described above, the prism portion 31 separated from the light guide portion 32 is fixed to the lower case 12. The light guide portion 32 is fixed to the holding portion 11 b of the upper case 11 together with the operation button 41 via the support member 42. Even if the prism portion 31 is fixed to the lower case 12 in the printed circuit board 20, the position of the incident surface 31 b is provided so as not to interfere with the printed circuit board 20. Positioning is fixed. The upper case 11 may be combined with the lower case 12 so that the head of the operation button 41 held by the upper case 11 enters the button window 121b of the lower case 12. There is no need to insert the portion 31a into the light exit window 121a of the lower case 12. For this reason, in addition to the effect of Embodiment 1, the effect that assembly property improves further is acquired.

Embodiment 3 FIG.
5 is a cross-sectional view schematically showing a main part of an in-vehicle device as an electronic device according to Embodiment 3 of the present invention. In the figure, the incident surface 31b of the prism portion 31 and the exit surface 32b of the light guide portion 32, which are formed as separate members constituting the optical member 30, are formed by inclined surfaces parallel to each other that are inclined with respect to the optical axis. Has been. Since other configurations are the same as those of the second embodiment, description thereof is omitted.

  In the third embodiment configured as described above, the light emitting area of the light guide portion 32 is increased by making the opposed emission surface 32b and incident surface 31b oblique, while the light receiving area of the prism portion 31 is also increased. By increasing, the effect that light is emitted from the light output part 31a of the prism part 31 to the outside of the in-vehicle device while ensuring a large amount of light emitted from the LED 21 is obtained.

Embodiment 4 FIG.
6 is an exploded perspective view schematically showing a main part of an in-vehicle device as an electronic device according to Embodiment 4 of the present invention. In the figure, an elastic portion 42c formed by forming a plate-like member in a zigzag shape is provided in the vicinity of a fixed claw portion 42a that is a fixed portion to the upper case 11 of the support member 42. Other configurations are the same as those of the second embodiment. The light guide 32 may be integrally formed with a light transmissive material together with the operation button 41 and the support member 42.

  In the fourth embodiment configured as described above, since the support member 42 is provided with the zigzag elastic portion 42c, even when the support member 42 is displaced when the operation button 41 is pressed, the U-shape is formed. The amount of bending of the bottom portion can be reduced, the stress generated in the base portion A of the fixed claw portion 42a protruding from the bottom portion is relieved, and the operation durability of the operation button 41 is improved. In addition, when the light-transmitting material is integrally formed, the light path of the light emitted from the LED 21 (not shown) becomes longer, and the amount of light reaching the operation button 41 is reduced because the light passes through the elastic portion 42c. In addition, light leakage in the direction of the operation button 41 can be suppressed. Further, when the operation button 41 does not transmit light, the film thickness of the paint can be set thin, and even a light-colored paint can be formed with a relatively thin film thickness, thereby reducing the cost and improving the design.

Embodiment 5 FIG.
FIG. 7 is an exploded perspective view schematically showing a main part of an in-vehicle device as an electronic device according to Embodiment 5 of the present invention. In the figure, an operation button LED 23 is provided on both sides of the printed circuit board 20 centering on an LED 21 provided at the center in the left-right direction. On the other hand, the operation button 41 and the support member 42 are integrally formed of a light-transmitting material, and are located at positions corresponding to the operation button LEDs 23 on the opposite two sides of the U-shape extending in the front-rear direction of the support member 42. The light guide part 42d which takes in the light of LED 23 for operation buttons is protrudingly provided by the same light transmissive material by integral molding. The light guide portion 42d is disposed so as to be positioned in the immediate vicinity of the operation button LED 23 via a gap when assembled, and has a length that sufficiently covers the stroke range of the operation button 41. In FIG. 7, the switch 22 on the printed circuit board 20 is not shown. Other configurations are the same as those in the fourth embodiment.

  In the fifth embodiment configured as described above, the operation button 41 on the nearest side is turned on by the light emission of the operation button LED 23. The lighting operation can be linked to a switch 22 not shown. Further, since the elastic portion 42c is formed in a zigzag shape, the light path of the light emitted from the LED 21 becomes longer and meanderingly advances, so that the operation button 41 is turned on by the operation button LED 23 and the LED 21. Further effects such as reduction in color mixture of light emitted from the prism portion 31 (not shown) can be obtained.

Embodiment 6 FIG.
In the first to fifth embodiments, the optical member 30 and the operation button 41 are held and fixed to the upper case 21 and the printed circuit board 20 is held to the lower case 12. The buttons 41 and the like may be held and fixed, and the printed circuit board 20 may be held on the upper case 21. Other configurations are the same as those of the first to fifth embodiments, and the operational effects are also the same, so illustration and description thereof are omitted.

  The configuration of the optical member 30 and the locking structure to the case body 10, the configuration of the operation button 41 and the support member 42, the locking structure to the case body 10 and the like are those exemplified in the first to fifth embodiments. It goes without saying that it is not limited. For example, the optical member 30 is configured only by the prism portion 31 or the light guide portion 32, or the number of the operation buttons 41 and the LEDs 21 is changed to one set or three sets or more. Of course, it can be changed. By the way, in the said embodiment, although the case where this invention was applied to the ETC onboard equipment was demonstrated to the example, it is not necessarily limited to this, It applies to other onboard apparatuses or electronic apparatuses other than an onboard apparatus. Obviously we can do it.

  DESCRIPTION OF SYMBOLS 10 Case body, 11 Upper case (1st case), 11a Fixing part, 11b Holding part, 12 Lower case (2nd case), 12a Convex part, 121 Front operation part, 121a Light emission window, 121b Button window, 121c Insertion slot 121d hook holding part, 20 printed circuit board, 20a positioning hole, 20b end face, 21 LED, 22 switch, 23 operation button LED, 30 optical member, 31 prism part, 31a light emitting part, 31b incident surface, 31c fixing hook part, 32 light guide part, 32a hook part, 32b emission surface, 41 operation button, 42 support member, 42a fixing claw part, 42b pressing part, 42c elastic part, 42d light guide part.

Claims (5)

A printed circuit board on which an LED and a switch are mounted, and a light emitting window through which the light emitted from the LED is emitted to the outside and a button window through which an operation button for operating the switch is inserted are accommodated in a predetermined portion. An electronic device comprising: a case body provided; an optical member disposed in an optical path from the LED to the light exit window; and a support member that elastically supports the operation button, wherein the case body is the printed circuit board. A first case and a second case divided vertically, and the optical member, the operation button, and the support member are provided on the inner surface of one of the divided first case and second case. locked, the printed circuit board with formed by adapted to mount to a predetermined portion of the other of the first case and the second case in this state, the optical member The light guide portion and the prism portion are integrally formed, and a fixing portion for the optical member and a holding portion for the support member are provided on the inner surface of the first case, and the printed circuit board is provided on the second case. An electronic device comprising: a positioning portion; a light exit window; and a button window . A printed circuit board on which an LED and a switch are mounted, and a light emitting window through which the light emitted from the LED is emitted to the outside and a button window through which an operation button for operating the switch is inserted are accommodated in a predetermined portion. An electronic device comprising: a case body provided; an optical member disposed in an optical path from the LED to the light exit window; and a support member that elastically supports the operation button, wherein the case body is the printed circuit board. A first case and a second case divided vertically, and the optical member, the operation button, and the support member are provided on the inner surface of one of the divided first case and second case. locked, the printed circuit board with formed by adapted to mount to a predetermined portion of the other of the first case and the second case in this state, the optical member It is composed of a light guide part and a prism part formed separately, and a holding part for an integrated member consisting of the light guide part, the support member, and the operation button is provided on the inner surface of the first case. The second case is provided with a positioning part of the printed circuit board, the light exit window and the button window, and a holding part of the prism part, and the position of the incident surface of the optical path of the prism part is the position of the printed circuit board. An electronic device , wherein the electronic device is provided closer to the light exit window side than the end face position on the light exit window side . The electronic device according to claim 2 , wherein opposing surfaces of the light guide body portion and the prism portion are inclined surfaces parallel to each other. The support member is an electronic device according to any one of claims 1 to 3, characterized in that the elastic portion formed in a zigzag shape is formed of a plate-like member provided. 2. The operation button LED for lighting the operation button through the support member is provided on at least a part of the operation button and the support member made of a light transmissive material. The electronic device according to claim 4 .

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