JP2005208396A - Light emission display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To sufficiently expand a range of display by light irradiation. <P>SOLUTION: Many light emitting diodes 22 which differ in light irradiation direction are mounted on one substrate 21. Light emitting diodes 22a of a 1st group are arranged at the center part of the substrate 21 and the light irradiation is orthogonal to the substrate 21. Light emitting diodes 22a of a 2nd group are radially arranged around the light emitting diodes 22a of the 1st group and the light irradiation is oblique to the substrate 21. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention belongs to a technical field related to a light emitting display device using a light emitting diode (LED) as a light source.

  As a light source of a light emitting display device used for various displays, an incandescent lamp capable of expanding a display range by diffusing light irradiation is widely used. However, incandescent lamps generate a large amount of heat and consume much power, and the structural design and installation location of the light-emitting display device are limited. Therefore, light-emitting diodes have been used as light sources for light-emitting display devices.

Conventionally, as a light emitting display device using a light emitting diode, for example, the following are known.
Japanese Utility Model Registration No. 3019845 Patent Document 1 discloses a light emitting display device in which a large number of light emitting diodes having different light irradiation directions are mounted in a single substrate in a vertical and horizontal arrangement.

  The light emitting display device according to Patent Document 1 secures the light diffusibility of light irradiation that extends the display range by arranging a plurality of light emitting diodes that are linear in light irradiation, with different directions of light irradiation. It is intended to utilize the heat generation amount and low power consumption that are the characteristics of the diode.

  In the light emitting display device according to Patent Document 1, since the light emitting diodes are arranged in rows and columns and the direction of light irradiation cannot be set in the direction between the columns, the display range is not sufficiently expanded by light irradiation. There is a problem.

  The present invention has been made in consideration of such problems, and an object of the present invention is to provide a light-emitting display device that can sufficiently expand the display range by light irradiation.

  In order to solve the above-described problems, the light-emitting display device according to the present invention employs means described in each of the claims.

  That is, in claim 1, in a light emitting display device in which a plurality of light emitting diodes having different light irradiation directions are mounted on a single substrate, the first group of light emitting diodes is arranged at the central portion of the substrate to emit light. The irradiation is directed in a direction orthogonal to the substrate, and the second group of light emitting diodes is arranged radially around the first group of light emitting diodes, and the light irradiation is directed in a direction inclined with respect to the substrate. Features.

  With this means, the direction of light irradiation can be set three-dimensionally by combining the direction of light irradiation of the light emitting diodes of the first group and the direction of light irradiation of the light emitting diodes of the second group.

  According to a second aspect of the present invention, in the light-emitting display device according to the first aspect, the second group of light-emitting diodes are brought into contact with a mounting surface inclined at a base fixed to the substrate and the lead wire is fixed to the base. It is characterized by being inserted into a wiring groove provided in the interior of the housing.

  In this means, the second group of light emitting diodes is mounted on the substrate via the pedestal.

  According to a third aspect of the present invention, in the light emitting display device according to the first or second aspect, the light emitting diode is covered with a common lens body that diffuses light irradiation.

  In this means, both the light irradiation of the light emitting diodes of the first group and the light irradiation of the light emitting diodes of the second group are diffused by the lens body.

  According to a fourth aspect of the present invention, in the light emitting display device according to any one of the first to third aspects, the circuit element connected to the light emitting diode is disposed in a space between the second group of light emitting diodes and mounted on the substrate. It is characterized by.

  In this means, the circuit element is mounted on the substrate using the space between the second group of light emitting diodes.

  The light emitting display device according to the present invention sets the light irradiation direction in a three-dimensional manner by combining the light irradiation direction of the first group of light emitting diodes and the light irradiation direction of the second group of light emitting diodes. Therefore, there is an effect that the display range is sufficiently expanded by light irradiation.

  Further, as claimed in claim 2, since the second group of light emitting diodes is mounted on the substrate via the pedestal, it is avoided that the lead wires of the second group of light emitting diodes are bent and exposed. The light irradiation direction of the second group of light emitting diodes is accurately fixed, and the light irradiation direction of the second group of light emitting diodes is reliably maintained.

  Further, as claimed in claim 3, since both the light irradiation of the light emitting diodes of the first group and the light irradiation of the light emitting diodes of the second group are diffused by the lens body, the display range by the light irradiation is further expanded. There is an effect that is made.

  Further, as claimed in claim 4, since the circuit element is mounted on the substrate by utilizing the space between the second group of light emitting diodes, the circuit element is mounted on the substrate without obstructing the light irradiation of the light emitting diodes. There is an effect to be installed.

  Hereinafter, the best mode for carrying out a light emitting display device according to the present invention will be described with reference to the drawings.

  In this embodiment, an exterior member 1 including a glass cover 11, a mounting base plate 12, mounting bolts 13, a wiring cord 14, and a waterproof ring 15 is provided and used as a vehicle indicator lamp.

  The glass cover 11 is a special glass having a relatively large thickness colored in a necessary display color such as yellow or red, and is formed in a hollow spindle shape.

  The mounting base plate 12 is formed in a disc shape from an insulating synthetic resin material, and abuts against an open portion of the glass cover 11 to form an accommodation space in which an interior member 2 described later is accommodated.

  Two mounting bolts 13 are provided in the vicinity of the outer peripheral edge of the mounting base plate 12 through an angle of 180 degrees so as to serve as a mounting tool to the vehicle body and one pole of the electric circuit of the vehicle. Connected to the terminal.

  One wiring cord 14 is provided in the vicinity of the central portion of the mounting base plate 12 and serves as a connection terminal to the other pole of the electric circuit of the vehicle.

  The waterproof ring 15 is formed of a rubber material or a synthetic resin material in a ring cap shape, and covers the abutting portions of the glass cover 11 and the mounting base plate 12 from the outside to cover the seam in a watertight manner.

  An interior member 2 including a substrate 21, a light emitting diode 22, a base 23, a circuit element 24, a lens body 25, and the like is attached to the mounting base plate 12 of the exterior member 1.

  As shown in FIG. 2, the substrate 21 is printed on a substrate main body 21a formed in a non-circular shape with an insulating synthetic resin and the back surface of the substrate main body 21a (the surface on the mounting base plate 12 side of the exterior member 1). The conductor pattern 21b, the through hole 21c penetrating the board body 21a, the wiring cord hole 21d, and the screw hole 21e. The wiring cord 14 connected to the conductor pattern 21b and the wiring cord 14 connected to the mounting bolt 13 of the exterior member 1 are inserted into the wiring cord hole 21d. The substrate 21 is attached to the mounting base plate 12 of the exterior member 1 with screws 27 inserted through the screw holes 21e.

  The light emitting diode 22 includes a first group of light emitting diodes 22a and a second group of light emitting diodes 22b. Three light emitting diodes 22 a of the first group are arranged almost radially at the central portion of the substrate 21, and light irradiation is directed in a direction perpendicular to the substrate 21. The light emitting diodes 22a of the first group are mounted on the substrate 21 by the lead wires being inserted from the surface into the through holes 21c of the substrate 21 and connected to the conductor pattern 21b. Six light emitting diodes 22b of the second group are arranged radially around the light emitting diodes 22a of the first group, and light irradiation is directed in a direction inclined with respect to the substrate 21. The light emitting diodes 22b of the second group are mounted on the substrate 21 by connecting the lead wires from the surface through the through holes 21c of the substrate 21 via the pedestal 23 and connecting to the conductor pattern 21b. The number of the light emitting diodes 22a and 22b is not limited to this example.

  As shown in detail in FIG. 3, the pedestal 23 is formed in a deformed rectangular block of an insulating synthetic resin material, and an angle θ with which the bottom of the second group of light emitting diodes 22 b abuts on the outer top is set. A mounting surface 23a inclined by approximately 20 degrees is provided, and a wiring groove 23b through which a lead wire of the light emitting diode 22b of the second group is inserted is provided. In the wiring groove 23b, an open portion 23c opened to the outside is provided in the middle to facilitate the insertion work of the lead wires of the second group of light emitting diodes 22b.

  The circuit element 24 includes a diode 24 a and a resistor 24 b that constitute a circuit connected to the light emitting diode 22. The circuit element 24 is mounted on the substrate 21 by a lead wire being inserted from the surface into the through hole 21c of the substrate 21 and connected to the conductor pattern 21b. The circuit element 24 is arranged in a space between the second group of light emitting diodes 22b arranged in a radial manner, so that the light irradiation of the light emitting diodes 22 is avoided.

  The lens body 25 is formed of a transparent synthetic resin material in a cup shape with grooves such as diamond cuts formed on the inner surface thereof, and is configured to cover the entire surface of the substrate 21 including the mounted light emitting diode 22. The lens body 25 is attached to the mounting base plate 12 of the exterior member 1 with screws 28 and an adhesive (waterproof structure) so as to be fitted to the substrate 21.

  According to this embodiment, the light irradiation direction of the light emitting diode 22 is set in a three-dimensional manner by the combination of the first group of light emitting diodes 22a and the second group of light emitting diodes 22b. Is fully expanded. Since the light irradiation set in the three-dimensional direction is further diffused by the lens body 25, the display range is expanded more sufficiently by the light irradiation.

  Further, since the second group of light emitting diodes 22b is mounted on the substrate 21 via the pedestal 23, it is avoided that the lead wires of the second group of light emitting diodes 22b are bent and exposed. The light irradiation direction of the second group of light emitting diodes 22b is accurately fixed. Accordingly, the direction of light irradiation of the light emitting diodes 22b of the second group is reliably maintained, and the accuracy of the light display function is enhanced and the durability is also enhanced.

  As described above, in addition to the illustrated examples, the direction of light irradiation of the light emitting diodes 22b of the second group can be made different.

  The light-emitting display device according to the present invention can be applied to a wide range of light-emitting displays other than the vehicular indicator lamp.

BRIEF DESCRIPTION OF THE DRAWINGS It is a general view of the best form for implementing the light emission display apparatus which concerns on this invention, (A) shows the plane sectional view, (B) shows the partially cutaway side view. It is an enlarged rear view of the principal part of FIG. It is an expanded sectional view of the other principal part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Exterior member 2 Interior member 21 Board | substrate 22 Light emitting diode 22a 1st group of light emitting diode 22b 2nd group of light emitting diode 23 Base 23a Mounting surface 23b Wiring groove 24 Circuit element 25 Lens body

Claims (4)

  In a light emitting display device in which a large number of light emitting diodes with different light irradiation directions are mounted on one substrate, the first group of light emitting diodes is arranged in the central portion of the substrate, and the light irradiation is perpendicular to the substrate. A light emitting display device, wherein the light emitting diodes of the second group are arranged radially around the light emitting diodes of the first group, and the light irradiation is directed in a direction inclined with respect to the substrate.   2. The light emitting display device according to claim 1, wherein the light emitting diodes of the second group are in contact with a mounting surface provided at an inclination on a pedestal fixed to the substrate, and lead wires are provided inside the pedestal. A light-emitting display device which is inserted into a groove.   3. The light emitting display device according to claim 1, wherein the light emitting diode is covered with a common lens body that diffuses light irradiation. 4. The light emitting display device according to claim 1, wherein the circuit element connected to the light emitting diode is disposed in a space between the light emitting diodes of the second group and mounted on the substrate. Luminescent display device.

Images