JP2006160136A - Light emission display device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light emission display device for a vehicle to display an unprecedented new image by display light for brightening marks such as characters, graphics and symbols, and peripheral light for illuminating an emblem from a peripheral side, capable of being simply attached to a vehicle side by forming a display part including the emblem thin and lightweight. <P>SOLUTION: A light guide part 3 has a light guide main body part 31 made of synthetic resin having translucency, and a reflection layer 32 formed of non-translucent sheet on a lower surface. The light guide main body part 31 has a projecting part 311 projectingly formed along a vertical direction to guide/branch the light entering the display part 5 in a vertical direction (thickness direction), and a flat part 312 formed to be flat along a radial direction to guide/branch the light entering the display part 5 in a radial direction (crossing direction). The projecting part 311 is inserted from a lower part in a through hole part 43 of the emblem 4. The flat part 312 has a peripheral edge formed into the same shape along the peripheral edge of the emblem 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a light-emitting display device for a vehicle using an emblem attached to a vehicle such as an automobile.

  An emblem that displays the manufacturer's name, vehicle type, model, etc. with marks such as letters, figures, symbols, etc., on the exterior (radiator grill, tail end panel, bonnet, etc.) or inside (instrument panel, etc.) (Also referred to as an ornament). And in order to be able to visually recognize these emblems not only at daytime but also at night, a device for incorporating a light source (light emitting body) such as a light emitting diode (LED), electroluminescence (EL), or a lamp into such an emblem. Has been made. For example, a technique for improving the visibility of the mark portion at night by irradiating the mark portion of the emblem directly or indirectly through an optical fiber with light from a light source attached to the vehicle side is disclosed ( (See Patent Documents 1 and 2). Among these, when using LED with high luminous efficiency like patent document 1, since a drive voltage can be made low, there exists an advantage which can be made into a cheap structure. Further, when an optical fiber is interposed as in Patent Document 2, there is an advantage that the number of light sources can be reduced because attenuation during propagation is small and uniform illumination is possible.

Japanese Utility Model Publication No. 5-1597 JP-A-8-2342

  However, when illuminating (displaying) the mark portion of the emblem as described above, if the transmitted light (display light) is felt dazzling or dark, there is a risk that the maker image or the like may be reduced. For this reason, there is a case where these techniques cannot be applied as they are unless a technique for adjusting the amount of light transmitted through the mark portion in accordance with changes in the surrounding environment is added. In addition, since the light source, the optical fiber, and the like are incorporated, the emblem itself may be increased in size and weight, or the emblem may be attached to the vehicle in a complicated manner. For this reason, there are cases where these techniques cannot be applied as they are in a place where vibration during traveling is relatively large.

  An object of the present invention is to display an unprecedented novel image by display light for illuminating marks such as characters, figures, symbols, etc. and ambient light for illuminating the emblem from the peripheral side, including the emblem An object of the present invention is to provide a light emitting display device for a vehicle which can be easily attached to a vehicle side by forming a display portion thin and light.

Means for Solving the Problems and Effects of the Invention

In order to solve the above problems, a light-emitting display device for a vehicle according to the present invention includes:
A plate-like or film-shaped light guide part with one end face attached to the vehicle side is the back side, and a plate-like or film-like emblem located on the other end face side of the light guide part is the front side, and the thickness direction With a display unit superimposed on
The light that has entered the display unit from the light source on the vehicle side is guided and branched in the thickness direction and the direction intersecting with the light guide unit (hereinafter referred to as the intersecting direction),
Among them, the light guided in the thickness direction by the light guide portion is transmitted to the surface in the thickness direction through the light transmitting portion formed in the display portion in order to display marks such as characters, figures, symbols, etc. While constituting the display light for shining the mark,
The light guided in the crossing direction by the light guide unit is prevented from being transmitted to the surface in the thickness direction by the light shielding layer formed on the display unit so as to cover the other end surface of the light guide unit. Leaking from the peripheral side to the outside in the cross direction through the part, constituting the ambient light for illuminating the emblem from its peripheral side,
The emblem is irradiated with the display light and the ambient light in combination.

  In this way, mark portions such as characters, figures, symbols, and the like are illuminated by display light guided in the thickness direction by the light guide unit, and ambient light that is guided in the crossing direction by the light guide unit and leaks from the peripheral side of the light guide unit The emblem is illuminated from the periphery. As a result, the periphery of the emblem appears light and floats in the air, and the mark part is clearly illuminated in the display, so you can display an unprecedented new image, such as manufacturer, car type, model, etc. The image can be improved. In addition, by forming a light shielding layer in the display portion, the other portion (main portion) of the display portion can be made of synthetic resin or the like, so that the display portion can be made thin and lightweight. In addition, since the plate-shaped or film-shaped light guide portion is a base for mounting the emblem on the vehicle side, the mounting of the emblem on the vehicle side can be made simple and strong. Therefore, for example, a thin and light display portion can be firmly fixed to the vehicle side without using a special mounting structure even in a place where vibration during traveling is relatively large, such as a radiator grill. Furthermore, by using the light guide portion, it is possible to achieve uniform and efficient illumination with little attenuation during the propagation of light in the thickness direction and the cross direction, and it is possible to achieve power saving and long life.

  Here, the “light-shielding layer” includes a light-shielding property other than a light-shielding metal layer (metal or metallic light-shielding layer; metal thin film) formed by wet plating, vacuum deposition, sputtering, painting, printing, hot stamping, or the like. And a light shielding resin layer formed of a synthetic resin sheet, a synthetic resin film, and the like. Further, such a light shielding layer can be formed on any part of the emblem in the thickness direction, on the back surface, and in the middle, and may be provided separately (separately) from the emblem.

Next, in order to solve the above problems, a first specific aspect of the light emitting display device for a vehicle according to the present invention is as follows:
The plate-shaped light guide part with one end face attached to the vehicle side is the back side, and the plate-like emblem located on the other end face side of the light guide part is the front side, and is stacked and fixed in the thickness direction. Provided with a display unit,
The emblem has an emblem body made of a synthetic resin having translucency and a metallic light shielding layer formed on at least the surface in the thickness direction,
The light that has entered the display unit from the light source on the vehicle side is guided and branched in the thickness direction and the direction intersecting with the light guide unit (hereinafter referred to as the intersecting direction),
Among them, the light guided in the thickness direction by the light guide part is led to the surface in the thickness direction through the light transmitting part formed in the light shielding layer in order to display marks such as characters, figures, symbols, etc. While constituting the display light for shining the mark,
The light guided in the cross direction by the light guide unit is prevented from being transmitted in the thickness direction by the light-shielding layer of the emblem, leaks from the peripheral portion to the outside in the cross direction through at least the light guide unit, Configure ambient light to illuminate the emblem's shading layer from its peripheral side,
The emblem is irradiated with the display light and the ambient light in combination.

  In this way, when the display unit is configured by superimposing and fixing the emblems formed separately (separately) and the light guide unit, the light emitting display of the present invention can be used by using the ready-made emblems as they are. The device can be implemented. Therefore, the thin and light display portion can be firmly fixed to the vehicle side without using a special mounting structure even in a place where vibration during traveling is relatively large as described above. In addition, a metallic light-shielding layer is formed on the surface of the emblem in the thickness direction, for example, by wet plating, so that metallic luster is displayed under natural light during the day, and display light and ambient light are used at night. By irradiating in a complex manner, the emblem can display the novel image described above. At that time, the weather resistance of the emblem body made of synthetic resin can be improved by the metallic light-shielding layer on the surface, and deterioration due to ultraviolet rays or acid rain can be prevented. In the emblem manufacturing process, even when the plating layer is formed not only on the surface in the thickness direction of the emblem but also on the back surface, the emblem having the plating layers formed on both the front and back surfaces can be used as it is.

In order to solve the above problem, a second specific embodiment of the light emitting display device for a vehicle according to the present invention includes:
The other end face of the light guide section, with the plate-like light guide section with one end face attached to the vehicle side as the back face side and the plate-shaped emblem located on the other end face side of the light guide section as the front face side Including a display unit integrally formed by being stacked in the thickness direction through a light shielding layer for covering
Light that enters the light guide unit from the light source on the vehicle side is guided and branched in the light guide unit in the thickness direction and the direction intersecting the thickness direction (hereinafter referred to as the cross direction),
Among them, the light guided in the thickness direction by the light guide part is led to the surface in the thickness direction through the light transmitting part formed in the light shielding layer in order to display marks such as characters, figures, symbols, etc. While constituting the display light for shining the mark,
The light guided in the crossing direction by the light guide part is prevented from being transmitted to the surface in the thickness direction by the light shielding layer, leaks from the peripheral part to the outside in the crossing direction through the light guide part, and the emblem The ambient light to illuminate the
The emblem is irradiated with the display light and the ambient light in combination.

  As described above, when the light guide unit and the emblem are integrally formed through the intermediate light shielding layer, the emblem is irradiated with the display light and the ambient light in the composite manner at night as described above. A novel image can be displayed, and a thin and lightly formed display portion can be fixed to the vehicle side. At that time, the intermediate light shielding layer can branch the display light in the thickness direction and the ambient light in the cross direction without waste. Moreover, for example, if film insert molding is performed by injection molding with a light-shielding film as an intermediate light-shielding layer, the existing emblem is integrated with the light guide unit to provide a strong display unit and a vehicle-side fixing structure. Can do.

Furthermore, in order to solve the above-mentioned problem, a third specific aspect of the light-emitting display device for a vehicle according to the present invention includes:
The plate-shaped light guide part with one end face attached to the vehicle side is the back side, and the film-like emblem that is located on the other end face side of the light guide part and forms the metallic light-shielding layer is the front side. , Including a display unit integrally formed by overlapping in the thickness direction,
Light that enters the light guide unit from the light source on the vehicle side is guided and branched in the light guide unit in the thickness direction and the direction intersecting the thickness direction (hereinafter referred to as the cross direction),
Among them, the light guided in the thickness direction by the light guide part is transmitted to the surface in the thickness direction through the light transmitting part formed in the emblem in order to display marks such as characters, figures, symbols, etc. While constituting the display light for shining the mark,
The light guided in the crossing direction by the light guide unit is prevented from being transmitted to the surface in the thickness direction by the emblem, leaks from the peripheral part to the outside in the crossing direction through the light guide unit, and passes through the emblem. Configure the ambient light to illuminate from its peripheral side,
The emblem is irradiated with the display light and the ambient light in combination.

  As described above, even when the light guide and the film-shaped emblem constituting the metallic light-shielding layer are integrally formed, the emblem is combined with display light and ambient light at night as described above. The novel image described above can be displayed by irradiating, and the thin and lightly formed display portion can be fixed to the vehicle side. Moreover, for example, by superimposing a film-like emblem as a light shielding layer on the injection-molded light guide part by vapor deposition or the like, an inexpensive and strong display part and a vehicle-side fixing structure can be obtained.

By the way, in these light emitting display devices for vehicles,
The light guide part has a light guide body part made of synthetic resin having translucency and a reflective layer formed on the vehicle side mounting surface (back surface in the thickness direction),
The light that enters the display unit from the point-shaped light source is guided and branched in the thickness direction and the crossing direction in the light guide main body unit,
Of these, the light guided in the thickness direction by the light guide main body part is transmitted through the light transmitting part to display marks such as characters, figures, symbols, etc., and is led out to the surface side in the thickness direction. While making up
The light guided in the cross direction by the light guide main body is prevented from being transmitted in the thickness direction by the reflective layer and the light shielding layer of the light guide, and is reflected and passes through the light guide main body from the peripheral side to the cross direction outside. Constitutes ambient light to illuminate the emblem from its surroundings,
The emblem may be irradiated with display light and ambient light in combination.

  As described above, when the reflection layer is formed in the light guide portion, the attenuation during the propagation of the ambient light is further reduced in combination with the light shielding layer, so that further power saving and longer life can be achieved.

  The light guide main body guides the light entering the display unit in the thickness direction in order to guide and branch light in the thickness direction, and the light entering the display unit in the cross direction. A flat portion formed in a flat shape along the crossing direction for branching, and deriving display light from the tip side of the protruding portion and leaking ambient light from the peripheral side of the flat portion it can. If light from the light source is introduced into the light guide main body, the projection and flat portions formed in the light guide main body guide and branch in the thickness direction and the crossing direction. Complex irradiation of the emblem can be easily performed.

  Further, it is desirable that the protruding portion of the light guide main body portion is inserted in the thickness direction with respect to the light transmitting portion, and the periphery of the flat portion of the light guide main body portion is formed in substantially the same shape along the periphery of the emblem. Thereby, the light leaking from the peripheral side of the light guide main body part can illuminate the peripheral edge of the emblem almost evenly and easily reach the viewing side. At that time, when the emblem and the light guide part each have a notch that opens at the outer peripheral edge and penetrates in the thickness direction, the outer peripheral edge of the notch of the light guide main body part is substantially the same along the outer peripheral edge of the emblem notch. It becomes a shape. When the emblem and the light guide part each have a through-hole penetrating in the thickness direction, the inner peripheral edge (through hole) of the light guide main body part has substantially the same shape along the inner peripheral edge of the emblem (through hole). Then, the light leaking from the inner peripheral edge of the light guide main body is reflected by the opposing inner peripheral edge, so that the through-hole can be lifted and shown, and further image enhancement can be achieved. .

  You may form the chamfering part which approaches a vehicle side toward the outer side at the outer periphery part of a light guide part (flat part). As a result, light that has passed through the light guide portion (flat portion) is likely to leak not only in the direction orthogonal to the thickness direction but also in an oblique direction from the chamfered portion toward the viewing side, thereby improving the visibility of the emblem. Note that the chamfered portion may be formed in any of a slope (planar) shape and a curved surface (for example, spherical round shape). Further, when the emblem and the light guide part each have a through-hole penetrating in the thickness direction, a chamfered part is formed on the inner peripheral edge of the light guide part (flat part) so as to approach the vehicle side toward the inside. May be.

  A chamfered portion that moves away from the vehicle side toward the outside may be formed on the outer peripheral edge portion of the light guide portion (flat portion). As a result, light that has passed through the light guide portion (flat portion) is likely to leak not only in the direction perpendicular to the thickness direction but also in the oblique direction from the chamfered portion, and is reflected by the mounting surface on the vehicle side to rise up the emblem. So that the visibility of the emblem is improved. Note that the chamfered portion may be formed in any of a slope (planar) shape and a curved surface (for example, spherical round shape). In addition, when the emblem and the light guide part each have a through-hole penetrating in the thickness direction, a chamfered part is formed on the inner peripheral edge of the light guide part (flat part) so as to go inward and away from the vehicle side. May be.

Here, the “substantially the same shape along the periphery” means one of the following (1) to (3).
(1) The outer peripheral edge (inner peripheral edge) of the light guide part (flat part) is formed so as to coincide with the outer peripheral edge (inner peripheral edge) of the emblem over almost the entire periphery (that is, 70% or more of the peripheral length);
(2) The outer peripheral edge (inner peripheral edge) of the light guide part (flat part) is separated from the outer peripheral edge (inner peripheral edge) of the emblem to the outside (inner side) by a substantially constant distance (that is, the change rate of the separation distance is within 10%). However, it is formed in parallel over almost the entire circumference (that is, 70% or more of the circumference);
(3) The outer peripheral edge (inner peripheral edge) of the light guide part (flat part) is separated from the outer peripheral edge (inner peripheral edge) of the emblem by a substantially constant distance inside (outside) (that is, the change rate of the separation distance is within 10%). However, it should be formed in parallel over almost the entire circumference (that is, 70% or more of the circumference).

  In addition, when the display light and the ambient light share a light source and are emitted as different colors of light, the emblem is displayed fantastically as if floating in the air with the display light and the ambient light. Becomes easy. Note that different color light may be formed by changing at least one of hue, saturation, and brightness.

Example 1
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an example of a light-emitting display device for a vehicle according to the present invention. FIG. 2 (a) is a cross-sectional view taken along line AA in FIG. 1, and FIG. As shown in FIG. 2, a light-emitting display device for a vehicle (hereinafter, also simply referred to as a display device) 1 includes a display unit 5 and one or more point light sources 6 (for example, one LED) arranged on the vehicle side. And. The display unit 5 includes a plate-like light guide unit 3 having one end surface attached to an attachment surface 2 on the vehicle side (for example, a radiator grill or the like outside the vehicle or an instrument panel inside the vehicle) via an adhesive layer a. A plate-like emblem 4 disposed on the back surface side (downward) and located on the other end surface side of the light guide 3 is disposed on the front surface side (upward), and they are overlapped in the thickness direction (vertical direction). These are bonded and fixed via an adhesive layer b such as a double-sided tape. The emblem 4 shown here is represented by a relatively flat and simple shape, but actually has a three-dimensional shape in which various irregularities are formed in order to give a profound feeling and texture. . Accordingly, a three-dimensional structure is often given to the light guide 3 as well. Here, “plate-like” means that the thickness is smaller than the spread of the surface (length, width, depth) (for example, the maximum thickness is 1/5 or less of the maximum length). Is not necessarily flat (flat).

  As shown in FIG. 1, the display unit 5 (the light guide unit 3 and the emblem 4) has a circular shape, and has half-moon-shaped through-holes 8 and 8 penetrating in the thickness direction with the central coupling unit 7 interposed therebetween. Yes. As shown in FIG. 1, when the display unit 5 is viewed from the upper side (thickness direction surface side; opposite to the mounting surface 2), the light guide unit 3 and the emblem 4 are formed in the same shape. The outer peripheral edge of the light guide 3 is formed to be located outside the outer peripheral edge of the emblem 4 by a certain distance, and the inner peripheral edge of the light guide 3 in the through holes 8 and 8 is the inner peripheral edge of the emblem 4. It is formed so as to be spaced apart by a certain distance inside.

  A through-hole portion 43 (translucent portion) is formed in the central connecting portion 7 of the emblem 4 (display portion 5) in order to display a mark M such as a character, a figure, or a symbol. Specifically, a synthetic resin (for example, an acrylic resin or a polycarbonate) having a mark M displayed (formed) on the surface (above) in a through-hole portion 43 that is formed through the emblem 4 along the vertical direction. A lens 44 (or a cover) made of resin or the like is embedded. A light shielding layer 45 such as aluminum plating is formed on portions other than the mark M displayed on the lens 44 (see FIG. 2).

  Returning to FIG. 2, the light guide 3 is formed on the light guide body 31 formed of a transparent synthetic resin (for example, acrylic resin or polycarbonate resin) and on the lower surface (vehicle-side mounting surface; thickness direction rear surface). And a reflective layer 32 formed of a non-translucent sheet. The light source 6 is disposed at the center of the light guide 3 (the center of the center connecting portion 7 of the display unit 5) facing the light introduction hole 33 formed through the reflective layer 32. The light guide main body 31 enters the display unit 5 and a projection 311 formed in a projecting shape along the vertical direction in order to guide and branch light entering the display unit 5 in the vertical direction (thickness direction). In order to guide and branch light in the radial direction (cross direction), it has a flat portion 312 formed flat along the radial direction. The protruding portion 311 is inserted from below into the through-hole portion 43 of the emblem 4. Further, as described above, the flat portion 312 has the periphery formed in the same shape along the periphery of the emblem 4. In addition, on the lower surface of the light guide main body 31, a truncated pyramid that narrows upward in order to guide and branch light from the light source 6 introduced through the light introduction hole 33 in the vertical direction and the radial direction. Or the truncated cone-shaped recessed part 310 (dent) is formed.

  As shown in FIG. 2A, at the outer peripheral edge of the light guide body 31, there are a peripheral surface 34 parallel to the vertical direction of the light guide 3 and a surface 35 positioned outside the outer peripheral edge of the emblem 4. And a chamfer 36 positioned between both surfaces 34 and 35 is formed. The chamfered portion 36 is provided with an inclination that becomes lower (approaching the mounting surface 2) from the surface 35 toward the outside. Further, as shown in FIG. 2B, the inner peripheral edge of the light guide main body 31 is positioned on the inner side of the peripheral surface 34 ′ parallel to the vertical direction of the light guide 3 and the inner peripheral edge of the emblem 4. And a chamfered portion 36 ′ located between both surfaces 34 ′ and 35 ′. The chamfered portion 36 ′ is provided with an inclination that becomes lower (approaching the mounting surface 2) as it goes inward from the surface 35 ′.

  The emblem 4 includes an emblem main body 41 formed of a light-transmitting synthetic resin (for example, acrylic resin or polycarbonate resin), and a metal formed by wet plating on the upper surface (surface in the thickness direction) of the emblem main body 41. And a light shielding layer 42 made of (for example, aluminum). The light shielding layer 42 is also formed on the peripheral surface parallel to the vertical direction on the outer peripheral edge (and inner peripheral edge) of the emblem 4 (emblem body 41). The above-described through-hole portion 43 is formed in the up-down direction through the emblem main body portion 41 and the light shielding layer 42.

  FIG. 3 shows an assembling method of the display unit 5. In the light guide 3, a non-translucent sheet 32 serving as a reflection layer is attached to the lower surface of the injection-molded light guide main body 31 via an adhesive layer c. In the emblem 4, an aluminum plating is applied to the upper surface of an injection-molded emblem main body 41 to form a light shielding layer 42. A lens 44 for displaying the mark M is prepared in advance. And if the protrusion part 311 of the light guide main-body part 31 is penetrated to the through-hole part 43 of the emblem 4, the light guide part 3 (flat part 312 upper surface) and the emblem 4 (emblem main-body part 41 lower surface) will adhere to adhesive layer b (for example, Bonded with double-sided tape. Further, when the lens 44 is fitted into the through-hole portion 43 of the emblem 4, the display portion 5 is integrated. The display unit 5 formed in this way is attached and fixed to the attachment surface 2 via the adhesive layer a on the lower surface of the non-translucent sheet 32. The non-translucent sheet 32 can be configured as a double-sided tape having an adhesive layer c on the upper surface and an adhesive layer a on the lower surface.

  In the display device 1 shown in FIG. 2, the light of the light source 6 that has entered the display unit 5 through the light introduction hole 33 is guided and branched in the vertical direction and the radial direction by the concave portion 310 of the light guide main body 31. Among these, the light guided in the vertical direction by the light guide main body 31 is transmitted from the front end side of the projecting portion 311 through the lens 44 (through hole portion 43) and led upward, and the mark M displayed on the lens 44. Is turned into display light L1. On the other hand, the light guided in the radial direction by the light guide main body 31 is reflected by the reflection layer 32 of the light guide 3 and the light shielding layer 42 of the emblem 4 while being prevented from transmitting in the vertical direction. 31 and the emblem main body portion 41, leaked from the peripheral side of the flat portion 312 toward the radially outer side, and becomes ambient light L2 that illuminates the light shielding layer 42 of the emblem 4 from the peripheral side. For example, the lens 44 and the light guide body 31 (flat portion 312) are colored in different colors so that the display light L1 and the ambient light L2 share the light source 6 and are emitted as different colors of light. It is.

  In this way, the emblem 4 is irradiated in a composite manner with the display light L1 and the ambient light L2. Therefore, the peripheral portion of the emblem 4 appears to be slightly lit by the ambient light L2 and floats in the air, and the mark M is clearly emitted and displayed by the display light L1, thereby forming an unprecedented novel image. At that time, the ambient light L2 leaks from the outer peripheral edge of the flat portion 312 not only in the radial direction but also in an oblique direction or upward, so that the ambient light L2 can easily reach the viewer side. Moreover, in the through-holes 8 and 8 part, the light leaked from the inner peripheral edge part of the light guide part 3 (light guide main body part 31) is reflected by the opposing inner peripheral edge part, so that the through-holes 8 and 8 are also lifted. You can show it off, and you can improve your image.

  Furthermore, by forming the light shielding layer 42 on the surface of the emblem 4, the light guide main body 31 and the emblem main body 41 can be made of synthetic resin, and the display unit 5 is thin and lightweight. At the same time, the weather resistance (prevention of deterioration due to ultraviolet rays or acid rain) of the synthetic resin emblem body 41 is improved by the metal light shielding layer 42 on the surface. Moreover, since the plate-shaped light guide 3 serves as a base for mounting the emblem 4 to the mounting surface 2 on the vehicle side, the mounting of the emblem 4 on the vehicle side is simple and strong. Therefore, even if the display device 1 is attached to the radiator grille and the vibration during traveling increases, the fixing of the display unit 5 to the vehicle side does not become unstable. Further, the reflection layer 32 of the light guide 3 and the light shielding layer 42 of the emblem 4 reduce attenuation during the propagation of the ambient light L2, and can illuminate uniformly and efficiently, resulting in power saving and long life.

  In addition, since the display part 5 is comprised by superimposing and adhering and fixing the emblem 4 and the light guide part 3 which were each formed separately, the ready-made emblem 4 can be used as it is as the display device 1. it can.

(Modification)
FIG. 4 shows a modification of FIG. 2 (Example 1). In the manufacturing process of the emblem 4, even when the plating layer 42 (light shielding layer) is formed not only on the upper surface (thickness direction surface) but also on the lower surface (back surface) side, the plating layer 42 is formed on both the front and back surfaces. The emblem 4 can be used as it is. That is, the light guided in the radial direction by the light guide main body 31 is reflected by the light shielding layer 42 on the back side of the emblem 4 and the reflection layer 32 of the light guide 3 while being prevented from transmitting in the vertical direction. The ambient light L2 leaks from the peripheral side of the flat portion 312 through the light main body 31 and illuminates the light shielding layer 42 of the emblem 4 from the peripheral side.

  Further, in the emblem 4 of FIG. 4, a concave portion 43 ′ (translucent portion) that penetrates the light shielding layer 42 on the lower surface side and reaches the lower half portion of the emblem main body portion 41 is formed, and the light guide main body portion 31 is formed in the concave portion 43 ′. The protruding portion 311 is inserted from below. The mark M is directly displayed on the light shielding layer 42 on the upper surface of the emblem 4. In FIG. 4, parts having the same functions as those in FIG.

(Example 2)
FIG. 5 shows another example of a light emitting display device for a vehicle according to the present invention. In the display device 100 of FIG. 5, the display unit 50 includes a plate-shaped emblem 40 and a plate-shaped light guide unit 30, the upper surface of the light guide unit 30 (surface opposite to the vehicle-side mounting surface; thickness direction surface). Are integrally formed by overlapping in the vertical direction via a light shielding layer 52 (for example, a light shielding film). Here, film insert molding is performed as such an integral molding method. Specifically, a ready-made emblem 40 is inserted and fixed in a fixed mold (not shown), a light shielding film 52 is held on the back surface in the thickness direction of the emblem 40, and a synthetic resin (for example, acrylic resin) is placed in a cavity (not shown). ). When the reflective layer 32 (for example, a non-translucent sheet) is bonded to the lower surface (vehicle-side attachment surface; thickness direction rear surface) of the light guide unit 30 after molding, the display unit 50 is completed. In the display device 100, the light guided in the radial direction by the light guide main body 31 is reflected by the light shielding layer 52 and the reflection layer 32 of the light guide 300 so that transmission in the vertical direction is hindered and reflected. The ambient light L2 leaks from the peripheral side of the flat portion 312 through 31 and illuminates the light shielding layer 42 of the emblem 40 from the peripheral side.

  As described above, when the light guide unit 30 and the emblem 40 are integrally formed through the intermediate light shielding layer 52, the film insert molding is performed by injection molding with the light shielding film serving as the intermediate light shielding layer 52 interposed therebetween. The emblem 40 can be integrated with the light guide unit 30 to form a strong display unit 50. 5, parts having the same functions as those in FIGS. 2 and 4 are denoted by the same reference numerals, and description thereof is omitted.

(Example 3)
FIG. 6 shows still another example of the vehicle light emitting display device according to the present invention. The display unit 500 in FIG. 6 is integrally formed by superimposing a film-like emblem 400 constituting a metal light-shielding layer (for example, an aluminum deposition layer) and a plate-like light guide unit 300 in the vertical direction. Yes. Here, the film-like emblem 400 is formed by vapor-depositing aluminum on the upper end surface and peripheral surface of the protruding portion 311 of the injection-molded light guide portion 300 (light guide main body portion 31) and the upper surface of the flat portion 312. Thereafter, when a planar light-emitting body 600 (for example, EL; light source) is bonded to the lower surface of the light guide section 300 (light guide main body section 31), the display device 200 is completed. The emblem 400 (light-shielding layer) is formed with a window portion 43 ″ (translucent portion) for displaying the mark M. In the display device 200, the light from the planar light emitter 600 is guided to the light guide body portion 31. The light is guided and branched in the vertical direction and the radial direction at 1. The light guided in the vertical direction by the light guide main body 31 passes through the window 43 ″ from the tip side of the protruding portion 311 and is led out upward. The mark M is displayed. On the other hand, the light guided in the radial direction by the light guide main body 31 passes through the light guide main body 31 and leaks from the peripheral side of the flat portion 312 toward the outer side in the radial direction, and causes the emblem 400 (light shielding layer) to pass from the peripheral side. Illuminate.

  As described above, when the film-shaped emblem 400 and the light guide unit 300 that form the metal light-shielding layer are integrally formed, the emblem 400 is integrated with the injection-molded light guide unit 300 by vapor deposition. Thus, the inexpensive and strong display portion 500 can be obtained. The planar light-emitting body 600 can be configured as a double-sided tape having an adhesive layer c ′ on the upper surface and an adhesive layer a ′ on the lower surface. In FIG. 6, parts having the same functions as those in FIG.

  FIG. 7 shows a modified structure of the peripheral edge portion (outer peripheral edge portion, inner peripheral edge portion) of the light guide main body 31, and FIGS. 7 (a), (b), and (c) are FIGS. 2 (Example 1) and FIG. (Modification) corresponds to FIG. 5 (Example 2). When attention is paid to the outer peripheral edge portion of these deformed structures, the outer peripheral edge portion of the light guide main body portion 31 (flat portion 312) becomes lower in a curved surface (for example, a spherical radius) as it goes outward from the surface 35 (mounting surface 2). A chamfered portion 37 is formed. As described above, by providing the curved chamfered portion 37, the light passing through the light guide main body portion 31 is more widely distributed and leaked from the peripheral portion of the flat portion 312. The same applies to the deformation structure of the inner peripheral edge. 7, parts having the same functions as those in FIGS. 2, 4, and 5 are denoted by the same reference numerals, and description thereof is omitted.

  FIG. 8 shows another modified structure of the peripheral part (outer peripheral part, inner peripheral part) of the light guide main body 31, and FIGS. 8 (a), (b) and (c) are shown in FIG. 2 (Example 1), This corresponds to FIG. 4 (modification) and FIG. 5 (embodiment 2). Among these, FIG. 8A shows a case where the outer peripheral edge of the light guide 3 is formed to coincide with the outer peripheral edge of the emblem 4. A chamfered portion 38 is formed at the outer peripheral edge portion of the light guide portion 3 (flat portion 312) over the entire thickness of the light guide main body portion 31 so as to be inclined away from the vehicle side toward the outside. As a result, the light leaking from the flat portion 312 of the light guide main body 31 is reflected by the mounting surface 2 on the vehicle side to illuminate the emblem 4, so that the visibility of the emblem 4 is improved.

  FIG. 8B shows a case where the outer peripheral edge of the light guide unit 3 is spaced outward from the outer peripheral edge of the emblem 4 by a certain distance. A chamfered portion 38 is formed on the outer peripheral edge portion of the light guide portion 3 (flat portion 312). The chamfered portion 38 has an inclination so as to move away from the vehicle side toward the outside. Specifically, the outer peripheral edge of the light guide main body 31 (flat part 312) has a surface 35 positioned outside the outer peripheral edge of the emblem 4 and a peripheral surface parallel to the thickness direction of the light guide 3. 39 and the chamfered portion 38 are continuously formed. Also in this embodiment, the light leaking from the flat portion 312 of the light guide main body 31 is reflected by the mounting surface 2 on the vehicle side.

  In FIG. 8C, a chamfered portion 38 is formed as in FIG. 8B. However, in this embodiment, a chamfered portion 48 is formed on the outer peripheral edge portion of the emblem 40 so as to be inclined toward the vehicle side toward the outside. The inner edge of the chamfered portion 38 of the light guide main body portion 31 (flat portion 312) reaches the inner side of the outer peripheral edge of the emblem 40.

  Note that a curved chamfered portion as shown in FIG. 7 may be used instead of the flat chamfered portion 38 shown in each drawing of FIG. The same applies to the deformation structure of the inner peripheral edge. Further, in FIG. 8, parts having the same functions as those in FIG. 2, FIG. 4, and FIG.

  In the third embodiment (FIG. 6), the outer peripheral edge (and inner peripheral edge) of the light guide unit 300 is matched with the outer peripheral edge (inner peripheral edge) of the emblem 400. In the first embodiment, the modified example, and the second embodiment described above, the periphery of the light guides 3 and 30 may be made to coincide with the periphery of the emblems 4 and 40 in the same manner.

  Moreover, although the example which provided the point light source 6 was shown, as shown with the broken line in Fig.2 (a), for example, the circumference part (the outer periphery which connects the both ends of the center connection part 7) of the light guide part 3 A plurality of (for example, two on the left and right) light sources 61 and 62 may be provided. Further, a planar light-emitting body 600 shown in FIG. 6 may be used in place of the point-like light source 6 shown in FIG. 2, FIG. 4, and FIG.

The front view which shows an example of the light emission display apparatus for vehicles of this invention. The AA sectional view and BB sectional view of FIG. Sectional drawing showing the assembly method of the display part of FIG. Sectional drawing showing the modification of FIG. Sectional drawing showing the other example of the light emission display apparatus for vehicles of this invention. Sectional drawing showing the further another example of the light emission display apparatus for vehicles of this invention. Sectional drawing which shows the deformation | transformation structure of the peripheral part of a light guide main-body part. Sectional drawing which shows the other deformation | transformation structure of the peripheral part of a light guide main-body part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light-emitting display device for vehicles 3 Light guide part 31 Light guide main-body part 311 Projection part 312 Flat part 32 Reflective layer 4 Emblem 41 Emblem main-body part 42 Light-shielding layer 43 Through-hole part (light-transmitting part)
5 Display 52 Light-shielding layer 6 Light source M mark

Claims (8)

A plate-like or film-shaped light guide part with one end face attached to the vehicle side is the back side, and a plate-like or film-like emblem located on the other end face side of the light guide part is the front side, and the thickness direction With a display unit superimposed on
The light that has entered the display unit from the light source on the vehicle side is guided and branched in the thickness direction and the direction intersecting with the light guide unit (hereinafter referred to as the intersecting direction),
Among them, the light guided in the thickness direction by the light guide portion is transmitted to the surface in the thickness direction through the light transmitting portion formed in the display portion in order to display marks such as characters, figures, symbols, etc. While constituting the display light for shining the mark,
The light guided in the crossing direction by the light guide unit is prevented from being transmitted to the surface in the thickness direction by the light shielding layer formed on the display unit so as to cover the other end surface of the light guide unit. Leaking from the peripheral side to the outside in the cross direction through the part, constituting the ambient light for illuminating the emblem from its peripheral side,
The vehicle luminescent display device, wherein the emblem is irradiated with the display light and the ambient light in combination. The plate-shaped light guide part with one end face attached to the vehicle side is the back side, and the plate-like emblem located on the other end face side of the light guide part is the front side, and is stacked and fixed in the thickness direction. Provided with a display unit,
The emblem has an emblem body made of a synthetic resin having translucency and a metallic light shielding layer formed on at least the surface in the thickness direction,
The light that has entered the display unit from the light source on the vehicle side is guided and branched in the thickness direction and the direction intersecting with the light guide unit (hereinafter referred to as the intersecting direction),
Among them, the light guided in the thickness direction by the light guide part is led to the surface in the thickness direction through the light transmitting part formed in the light shielding layer in order to display marks such as characters, figures, symbols, etc. While constituting the display light for shining the mark,
The light guided in the cross direction by the light guide unit is prevented from being transmitted in the thickness direction by the light-shielding layer of the emblem, leaks from the peripheral portion to the outside in the cross direction through at least the light guide unit, Configure ambient light to illuminate the emblem's shading layer from its peripheral side,
The vehicle luminescent display device, wherein the emblem is irradiated with the display light and the ambient light in combination. The other end face of the light guide section, with the plate-like light guide section with one end face attached to the vehicle side as the back face side and the plate-shaped emblem located on the other end face side of the light guide section as the front face side Including a display unit integrally formed by being stacked in the thickness direction through a light shielding layer for covering
Light that enters the light guide unit from the light source on the vehicle side is guided and branched in the light guide unit in the thickness direction and the direction intersecting the thickness direction (hereinafter referred to as the cross direction),
Among them, the light guided in the thickness direction by the light guide part is led to the surface in the thickness direction through the light transmitting part formed in the light shielding layer in order to display marks such as characters, figures, symbols, etc. While constituting the display light for shining the mark,
The light guided in the crossing direction by the light guide part is prevented from being transmitted to the surface in the thickness direction by the light shielding layer, leaks from the peripheral part to the outside in the crossing direction through the light guide part, and the emblem The ambient light to illuminate the
The vehicle luminescent display device, wherein the emblem is irradiated with the display light and the ambient light in combination. The plate-shaped light guide part with one end face attached to the vehicle side is the back side, and the film-like emblem that is located on the other end face side of the light guide part and forms the metallic light-shielding layer is the front side. , Including a display unit integrally formed by overlapping in the thickness direction,
Light that enters the light guide unit from the light source on the vehicle side is guided and branched in the light guide unit in the thickness direction and the direction intersecting the thickness direction (hereinafter referred to as the cross direction),
Among them, the light guided in the thickness direction by the light guide part is transmitted to the surface in the thickness direction through the light transmitting part formed in the emblem in order to display marks such as characters, figures, symbols, etc. While constituting the display light for shining the mark,
The light guided in the crossing direction by the light guide unit is prevented from being transmitted to the surface in the thickness direction by the emblem, leaks from the peripheral part to the outside in the crossing direction through the light guide unit, and passes through the emblem. Configure the ambient light to illuminate from its peripheral side,
The vehicle luminescent display device, wherein the emblem is irradiated with the display light and the ambient light in combination. The light guide part has a light guide body part made of synthetic resin having translucency and a reflective layer formed on the vehicle side mounting surface,
The light that has entered the display unit from the light source having a dotted shape is guided and branched in the thickness direction and the crossing direction in the light guide main body unit,
Among them, the light guided in the thickness direction by the light guide main body part is transmitted through the translucent part to display marks such as characters, figures, symbols, etc. While constituting the display light of
The light guided in the crossing direction by the light guide main body is prevented from being transmitted in the thickness direction by the reflective layer and the light shielding layer of the light guide and reflected, and passes through the light guide main body to the peripheral side. Leaking outward in the cross direction, constituting ambient light to illuminate the emblem from its peripheral side,
The light-emitting display device for a vehicle according to claim 1, wherein the emblem is irradiated with the display light and the ambient light in combination. The light guide main body includes a protruding portion formed in a protruding shape along the thickness direction in order to guide and branch the light entering the display portion in the thickness direction, and the light entering the display portion in a crossing direction. A flat portion formed in a flat shape along the crossing direction for guiding and branching,
The light-emitting display device for a vehicle according to claim 5, wherein the display light is led out from a distal end side of the protruding portion and the ambient light is leaked from a peripheral edge side of the flat portion. The protruding portion of the light guide main body is inserted in the thickness direction with respect to the light transmitting portion,
The light emitting display device for a vehicle according to claim 6, wherein a peripheral portion of the flat portion of the light guide main body portion is formed in substantially the same shape along a peripheral edge of the emblem. The light emitting display device for a vehicle according to any one of claims 1 to 7, wherein the display light and the ambient light share the light source and are emitted as different colors of light.

Images