JP2007219464A - Electronic apparatus with display - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive electronic apparatus with a display with high productivity in which a light emitting element is easily mounted. <P>SOLUTION: Since a light emitting element 4a is surface mounted on a circuit board 1 in the electronic apparatus with a display, the element is easily mounted, and the obtained apparatus is inexpensive with high productivity. Since a light guide plate 6 to guide light from the light emitting element 4a is present, light is easily guided to a display position, which increases flexibility about a display position. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electronic device with a display suitable for use in various electronic devices.

  FIG. 4 is a cross-sectional view of a main part of a conventional electronic device with a display. Next, the configuration of a conventional electronic device with a display will be described with reference to FIG. A holding member 52 made of an insulating material is attached.

The light emitting element 53 made of LED includes a light emitting part 54 and an L-shaped lead wire 55 connected to the light emitting part 54, and the light emitting element 53 is in a state where the light emitting part 54 is exposed on the front surface of the holding member 52. Thus, the L-shaped conducting wire 55 is held in the groove 52a of the holding member 52, and the end of the conducting wire 55 is connected to the electric circuit of the circuit board 51 to form a conventional electronic device with a display (for example, , See Patent Document 1).
Japanese Utility Model Publication No. 61-57548

  However, in the conventional electronic device with a display, since the light emitting element 53 has the conducting wire 55, not only the bending process of the conducting wire 55 and the holding member 52 for holding the light emitting element 53 are required, but also the light emitting element. The light emitting portions 54 of 53 must be arranged in the vicinity of the display position, and therefore, there is a problem that the mounting of the light emitting element 53 accompanying the display position of the light emitting portion 54 becomes troublesome.

  The present invention has been made in view of the situation of the prior art as described above, and an object of the present invention is to provide an electronic device with a display in which a light-emitting element is easily mounted, productivity is high, and cost is low.

  In order to achieve the above object, the present invention comprises a circuit board on which a desired electric circuit is formed, a light emitting element attached to the circuit board, and a light guide plate illuminated by the light emitting element. The end face of the light guide plate disposed on the circuit board is mounted on the circuit board, and the end face of the light guide plate is arranged to face the light emitting element, and the light of the light emitting element is introduced into the light guide plate from the end face of the light guide plate. It is characterized by having made it.

  In the present invention configured as described above, the light-emitting element can be easily mounted, has a high productivity and is inexpensive, and the light guide plate can guide the light to the display position. A simple display with high flexibility in display position can be obtained.

  Further, the present invention is the above invention, wherein the light guide plate has a first light guide plate portion, an LCD cell is disposed on the front surface of the first light guide plate portion, and the first light guide plate portion, A backlight portion of the LCD cell is formed by the first light emitting element disposed at a position facing the end face of the first light guide plate portion.

  According to the present invention configured as described above, the first light guide plate portion can be used as the backlight portion of the LCD cell, and the light of the first light emitting element is introduced from the end face of the first light guide plate portion. Therefore, the illumination of the first light guide plate part can be increased, and a suitable backlight part can be formed.

  Moreover, this invention has a 2nd light-guide plate part connected with the 1st connection part extended from the end of a 1st light-guide plate part in the said invention, The illumination of this 2nd light-guide plate part Thus, the first operation display is performed.

  In the present invention configured as described above, the first light guide plate portion that forms the backlight portion and the second light guide plate portion that performs the first operation display can be integrally formed, and the number of parts is small and inexpensive. Good assemblability can be obtained.

  Moreover, this invention has a 2nd light emitting element arrange | positioned in the said invention in the position facing the end surface of a 2nd light guide plate part, and illuminates a 2nd light guide plate part with a 2nd light emitting element. It is characterized by doing so.

  In the present invention configured as described above, the second light guide plate portion can be illuminated by the second light emitting element, and a clear first operation display by the second light guide plate portion can be obtained.

  Moreover, the present invention is characterized in that, in the above-mentioned invention, the first connecting portion is formed by a plate portion narrower than the first light guide plate portion.

  According to the present invention configured as described above, a light leakage between the first and second light guide plate portions is small.

  The present invention further includes a panel disposed on the front surface of the LCD cell in the above-described invention. The panel includes a first display window for the LCD cell and a second light guide plate portion protruding in the front surface direction. It has the 2nd display window surrounding a front-end | tip part.

  In the present invention configured as above, the first and second display windows can be divided by the presence of the second display window protruding in the front direction, and a reliable display can be obtained.

  Moreover, this invention has a 3rd light-guide plate part connected with the 2nd connection part extended from the other end of a 1st light-guide plate part in the said invention, This 3rd light-guide plate part A feature is that the second operation display is performed by illumination.

  According to the present invention configured as described above, the first light guide plate portion that forms the backlight portion, the second light guide plate portion that performs the first operation display, and the third light guide plate portion that performs the second operation display are provided. It can be formed integrally, has a small number of parts, is inexpensive, and has good assemblability.

  Moreover, this invention has a 3rd light emitting element arrange | positioned in the position facing the end surface of a 3rd light guide plate part in the said invention, and illuminates a 3rd light guide plate part with a 3rd light emitting element. It is characterized by that.

  In the present invention configured as described above, the third light guide plate portion can be illuminated by the third light emitting element, and a clear second operation display by the third light guide plate portion can be obtained.

  Moreover, the present invention is characterized in that, in the above invention, the second connecting portion is formed by a plate portion having a width smaller than that of the first light guide plate portion.

  In the present invention configured as described above, a light leakage of light between the first and third light guide plate portions can be obtained.

  The present invention further includes a panel disposed on the front surface of the LCD cell in the above-described invention. The panel includes a first display window for the LCD cell and a second light guide plate portion protruding in the front surface direction. It has the 2nd display window surrounding a front-end | tip part, and the 3rd display window surrounding the front-end | tip part of the 3rd light-guide plate part protruded in the front direction.

  According to the present invention configured as described above, the first, second, and third display windows can be distinguished by the presence of the second and third display windows protruding in the front direction, and a reliable display can be obtained. .

  The present invention provides a light-emitting element that is simple to mount, has good productivity, and is inexpensive, and the presence of the light guide plate makes it easy to guide light to the display position. Can be obtained.

  An embodiment of the invention will be described with reference to the drawings. FIG. 1 is a plan view of an essential part of an electronic device with a display according to the present invention, and FIG. 2 relates to the electronic device with a display according to the present invention. FIG. 3 is a perspective view of a light guide plate according to the electronic apparatus with a display of the present invention.

  Next, the configuration of the electronic device with a display according to the present invention will be described with reference to FIGS. 1 to 3. The circuit board 1 includes a wiring pattern 2 and various electronic components 3 such as a driver IC, a capacitor, and a resistor. A desired electric circuit such as a driving circuit for the LCD cell 5 to be described later is formed.

  In addition, the circuit board 1 is connected to the wiring pattern 2 and has a plurality of first light-emitting elements 4a made of LEDs surface-mounted in a line, and a front side from one end side of the first light-emitting elements 4a. A second light-emitting element 4b made of surface-mounted LEDs and a third light-emitting element 4c made of surface-mounted LEDs located forward from the other end of the first light-emitting element 4a. .

  Furthermore, the circuit board 1 has an LCD cell 5 arranged in an upright position in front of the first light emitting element 4a. The LCD cell 5 is connected to the wiring pattern 2 and is connected to an electric circuit. It is designed to be driven.

  The light guide plate 6 is formed of a molded product such as a transparent acrylic resin, and is positioned on both sides of the square first light guide plate portion 7 located at the center and the first light guide plate portion 7. It has quadrangular columnar first and second pedestal portions 9a and 9b connected by first and second connecting portions 8a and 8b made of narrow plate portions located on the lower side of the light guide plate portion 7.

  The light guide plate 6 is connected to the first pedestal portion 9a, and is connected to the fan-shaped second light guide plate portion 10 protruding forward from the first light guide plate portion 7 and the second pedestal portion 9b. , A fan-shaped third light guide plate portion 11 projecting forward from the first light guide plate portion 7, and a recess provided on the lower side of the first, second and third light guide plate portions 7, 10, 11. Twelve.

  That is, the first and second connecting portions 8a and 8b are formed by the slit 13 provided between the first light guide plate portion 7 and the first and second pedestal portions 9a and 9b. The second and third light guide plate portions 10 and 11 are formed by a narrower plate portion than the portion 7, and the first and second connecting portions 8a and 8b and the first and second pedestal portions 9a. , 9b are connected to the first light guide plate part 7.

  In such a light guide plate 6, the first light guide plate portion 7 is disposed at the rear of the LCD cell 5, and the first and second pedestal portions 9 a and 9 b are placed on the circuit substrate 1 in a state of being upright on the circuit substrate 1. And is attached to the circuit board 1 by screws or the like at the positions of the first and second pedestal portions 9a and 9b.

  At this time, the first, second, and third light emitting elements 4a, 4b, and 4c are located in the recess 12, and the first light emitting element 4a is opposed to the lower end surface of the first light guide plate portion 7, Further, the second light emitting element 4b faces the lower end surface of the second light guide plate portion 10, and further, the second light emitting element 4c faces the lower end surface of the third light guide plate portion 11, and The light of the first, second, and third light emitting elements 4a, 4b, and 4c is introduced into the first, second, and third light guide plate portions 7, 10, and 11, respectively.

  The panel 14 is made of a transparent resin molded product, and is provided with a plate-like first display window 15 and roundness that is provided on both sides of the first display window 15 and protrudes forward from the first display window 15. Second and third display windows 16 and 17, and a wall 18 extending rearward from the second and third display windows 16 and 17.

  And this panel 14 is arrange | positioned in the front surface of the LCD cell 5 and the light-guide plate 6 in the state which accommodated the circuit board 1, and each of the 1st, 2nd, 3rd display window 15,16,17 is each. The first, second, and third light guide plate portions 7, 10, and 11 are disposed in front of each other, and the second and third display windows 16 and 17 have second and second display windows, respectively. The light guide plate portions 10 and 11 of the three light guide plate portions are arranged to form the electronic device with a display according to the present invention.

  Next, the operation of the display-equipped electronic device having such a configuration will be described. For example, when the power of the electronic device is switched from OFF to ON, the second light emitting element 4b is turned on, and the second light emitting element The light 4b is introduced into the second light guide plate 10 from the end face side, the tip of the second light guide plate 10 is illuminated, and the display of the second light guide plate 10 is displayed through the second display window 16. Can be identified.

  That is, for example, the first operation display such as power ON / OFF is performed by the second light emitting element 4b and the second light guide plate section 10.

  In addition, when the power is turned on, the plurality of first light emitting elements 4a are turned on and introduced from the end surface side to the first light guide plate portion 7, and the first light guide plate portion 7 is illuminated, One light guide plate portion 7 is illuminated to illuminate the back surface of the LCD cell 5 to form a backlight portion of the LCD cell 5.

  For example, when the usage mode of the LCD cell 5 of the electronic device is switched from navigation to television, the LCD cell 5 is switched to television and the third light emitting element 4c is turned on, and the light of the third light emitting element 4c is turned on. Is introduced into the third light guide plate portion 11 from the end surface side, the tip of the third light guide plate portion 11 is illuminated, and the display of the third light guide plate portion 11 is identified through the third display window 17. Can do.

  That is, for example, the second operation display such as navigation and television is performed by the third light emitting element 4c and the third light guide plate portion 11.

  As described above, the first light guide plate unit 7 performs illumination as a backlight unit of the LCD cell 5, and the second and third light guide plate units 10 and 11 perform switching of the power source and the LCD cell 5. First and second operation displays are performed.

It is a top view of the principal part which concerns on the electronic device with a display of this invention. It is the principal part sectional drawing seen from the back surface which concerns on the electronic device with a display of this invention. It is a perspective view of the light-guide plate which concerns on the electronic device with a display of this invention. It is principal part sectional drawing of the conventional electronic device with a display.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Circuit board 2 Wiring pattern 3 Electronic component 4a 1st light emitting element 4b 2nd light emitting element 4c 3rd light emitting element 5 LCD cell 6 Light guide plate 7 1st light guide plate part 8a 1st connection part 8b 2nd Connecting portion 9a First pedestal portion 9b Second pedestal portion 10 Second light guide plate portion 11 Third light guide plate portion 12 Recessed portion 13 Slit 14 Panel 15 First display window 16 Second display window 17 Third Display window 18 Wall

Claims (10)

A circuit board on which a desired electric circuit is formed, a light emitting element attached to the circuit board, and a light guide plate illuminated by the light emitting element, the light emitting element being attached to the circuit board by being surface-mounted. The end face of the light guide plate arranged on the circuit board is arranged to face the light emitting element, and the light of the light emitting element is introduced into the light guide plate from the end face of the light guide plate. An electronic device with a display. The light guide plate has a first light guide plate portion, an LCD cell is disposed on the front surface of the first light guide plate portion, and the first light guide plate portion and the first light guide plate portion The display-equipped electronic device according to claim 1, wherein a backlight portion of the LCD cell is formed by the first light emitting element arranged at a position facing the end face. The light guide plate has a second light guide plate portion connected to a first connecting portion extending from one end of the first light guide plate portion, and a first operation display is displayed by illumination of the second light guide plate portion. The electronic device with a display according to claim 2, wherein the electronic device has a display. It has 2nd said light emitting element arrange | positioned in the position facing the end surface of said 2nd light guide plate part, It was made to illuminate said 2nd light guide plate part by said 2nd light emitting element. The electronic device with a display according to claim 3. 5. The electronic device with a display according to claim 3, wherein the first connecting portion is formed by a plate portion having a width narrower than that of the first light guide plate portion. A panel disposed on a front surface of the LCD cell, the panel surrounding a first display window for the LCD cell and a second light guide plate portion protruding in a front direction; 6. The display-equipped electronic device according to claim 3, further comprising a display window. The light guide plate has a third light guide plate portion connected to a second connecting portion extending from the other end of the first light guide plate portion, and a second operation display is performed by illumination of the third light guide plate portion. The electronic device with a display according to any one of claims 3 to 5, wherein: It has 3rd said light emitting element arrange | positioned in the position facing the end surface of said 3rd light-guide plate part, It was made to illuminate the said 3rd light-guide plate part by the said 3rd light-emitting element, The electronic device with a display according to claim 7. The display-equipped electronic device according to claim 7, wherein the second connecting portion is formed by a plate portion that is narrower than the first light guide plate portion. A panel disposed on a front surface of the LCD cell, the panel surrounding a first display window for the LCD cell and a second light guide plate portion protruding in a front direction; 10. The display-equipped electron according to claim 7, further comprising a display window and a third display window surrounding a front end portion of the third light guide plate portion protruding in a front direction. machine.

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