JP7209516B2 - Light-emitting display device for vehicle - Google Patents

Description

The present invention relates to a light-emitting display device for vehicles.

2. Description of the Related Art Vehicles in recent years are equipped with a light-emitting display device that includes a light source device and emits light at night or the like. For example, an emblem or the like arranged at the front center of a vehicle is provided as a light-emitting display device (for example, Patent Document 1).

Some of such light-emitting display devices currently have the following structure. That is, as shown in FIG. 7, the light emitting display device 101 includes a light source device 110, a diffusion plate 109, a translucent member 102, a metallic plated cover 104, and a case body 105. FIG. The light source device 110 is a backlight including LEDs, etc., and is arranged in the case body 105 . The diffusion plate 109 is a plate-like member arranged in front of the light source device 110 to diffuse the light from the light source device 110 . The translucent member 102 is a substantially white resin member assembled to the case body 105 so as to be arranged in front of the diffusion plate 109 . The plated cover 104 is a covering member that covers the translucent member 102 from the front side so as to prevent light passing through the translucent member 102 from being emitted to the outside. An opening 104H is provided forming the portion 103E. When the light source device 110 does not emit light, the surface of the translucent member 102 located inside the opening 104H of the plated cover 104 is coated with a black colored clear coating 103 having translucency so that the marking portion 103E can be seen black. is applied. When the light source device 110 emits light, the notation portion 103E exposed in the opening 104H of the plated cover 104 and the outer peripheral portion 102B not covered with the plated cover 104 of the translucent member 102 emit white light. is visible in

JP-A-2005-215596

However, when a black coating (color clear coating) is applied to the surface of the substantially white translucent member 102, the white color of the translucent member 102 itself causes the translucent member 102 to appear slightly grayish, and thus to be completely black. can't show

Moreover, when the distance between the light source device 110 and the diffuser plate 109 is short, the light is not uniformly diffused to irradiate the light emitting regions (103E, 102B), and uneven light emission tends to occur.

An object of the present invention is to provide a vehicle in which the writing area can be visually recognized when the light source device is not emitting light in a manner that is less affected by the color of the translucent member than in the conventional art, and the writing region emits light evenly when the light source device is emitting light. It is an object of the present invention to provide a light-emitting display device for electronic devices.

Means for solving the problem and effects of the invention

In order to solve the above problems, the vehicle light-emitting display device of the present invention includes:
a light source device;
a colored translucent member that is arranged on the front side of the light source device and has optical transparency;
a colored smoke member arranged to cover a predetermined region of the translucent member from the front side and made of a black resin material having a light transmittance of 50% or less;
a non-light-transmitting cover member arranged to cover the colored smoked member from the front side, and having a notch portion provided in a part thereof to expose the colored smoked member to the front side to form a notation portion; ,
a rear surface facing the rear side of the colored smoke member, a surface facing the front side of the translucent member, and a rear surface facing the rear side of the translucent member, at least in the area behind the inscription portion; A light diffusion layer is formed on one or more of
The colored smoke member is integrated with the light-transmitting member on the outer peripheral side in the area behind the cover member, and forms a space between the light-transmitting member facing the predetermined area on the inner peripheral side. It is characterized by

According to the present invention, the color of the colored smoked portion itself can be visually recognized without being affected by the color of the translucent member. For example, instead of exposing a black painted area painted on a white translucent member from the notch of the cover area as in the conventional case, the black colored smoke member itself can be exposed. According to this, since it is not affected by the white color of the translucent member, it is possible to visually recognize clearer black. Further, according to the present invention, by providing the light diffusion layer on the rear surface of the colored smoke member or the translucent member, the light diffusion layer can be formed at a position further away from the light source device, thereby reducing unevenness in light emission.

The light diffusing layer in the present invention is, at least in the area behind the writing portion, either a back surface facing the rear side of the colored smoked member or a surface facing the front side of the predetermined region of the translucent member. or both . According to this configuration, it is possible to form two or three layers of light diffusion layers, so that uneven light emission can be greatly reduced.

BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows the light emitting display apparatus for vehicles which is 1st Example of this invention. FIG. 2 is a cross-sectional view schematically showing the AA cross section of FIG. 1; The B section enlarged view of FIG. FIG. 2 is a cross-sectional view schematically showing a vehicle light-emitting display device according to a second embodiment of the present invention, using the same cross section as the AA cross section of FIG. 1; FIG. 2 is a cross-sectional view schematically showing a vehicle light-emitting display device according to a third embodiment of the present invention, using the same cross section as the AA cross section of FIG. 1; FIG. 4 is a cross-sectional view schematically showing a vehicle light-emitting display device according to a fourth embodiment of the present invention, using the same cross section as the AA cross section of FIG. 1; FIG. 2 is a cross-sectional view schematically showing a conventional vehicular light emitting display device using the same cross section as the AA cross section in FIG. 1;

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the vehicular light-emitting display device 1 of this embodiment includes a light source device 10, a translucent member 2, a colored smoke member 3, a cover member 4, a case body 5, Prepare. Note that the colored in the present invention is not limited to chromatic colors, and includes achromatic colors such as white, black, and gray.

The case body 5 is a member that does not transmit light, and has a bottomed tubular shape with an open front surface and a closed rear surface. A light source device 10 is mounted and fixed on the bottom side of the case body 5 . The case body 5 here is a resin molded body, and is molded, for example, from black ASA (Acrylate Sthrene Acrylonitrile).

The light source device 10 has a circuit board 6 and a light emitting element 7 mounted on the main surface of the circuit board 6, as shown in FIG. The light-emitting elements 7 here are a plurality of LEDs (light-emitting diodes) widely distributed on the main surface of the circuit board 6, and a light-emitting surface 10a that emits white light, for example, is formed on the main surface side of the circuit board 6. , the light emitting surface 10a thereof is arranged to face forward. Other devices may be used as the light source device 10. For example, a plate-shaped light guide member and a light source for irradiating light from the side surface or the back side thereof may be used.

The translucent member 2 is a colored member including an achromatic color and a chromatic color having a higher light transmissivity than at least the colored smoke member 3, and is arranged in front of the light emitting surface 10a of the light source device 10. The translucent member 2 is engaged and assembled to the case body 5 so as to cover the front opening. Since the assembling method is a well-known method, the explanation is omitted. When the light source device 10 behind emits light, the translucent member 2 is visually recognized from the outside as emitting light in the same color as its own color. The light-transmitting member 2 here is a resin molding, for example, made of white transparent acrylic, and is visually recognized as emitting white light by the light from the light source device 10 .

The colored smoke member 3 has light transmittance, and is made of a colored resin material including achromatic and chromatic colors with a light transmittance of 50% or less, more preferably 20% or more and 50% or less. , is arranged so as to cover a predetermined central region 2A (predetermined region) on the front side of the translucent member 2 . Since the colored smoke member 3 here is achromatic, when the rear light source device 10 emits light, the light passes through the colored translucent member 2 and enters the translucent member 2. It is visually recognized as emitting light of the same color (here, white). The colored smoked member 3 here is a resin molded body, for example, molded as a black smoked acryl, and integrated with the separately molded translucent member 2 by heat welding or the like. The colored smoke member 3 faces the central region 2A of the translucent member 2 on the inner peripheral side with a space 8 (air layer) interposed therebetween, and is integrated with the translucent member 2 on the outer peripheral side.

The cover member 4 is a member having a lower light transmittance than at least the colored smoke member 3 . The cover member 4 here is a member that does not transmit light, and is arranged so as to cover the front side of the colored smoke member 3 . The cover member 4 here is a metal-like member whose surface is plated with metal, and is assembled by being engaged with the translucent member 2 on the outer peripheral side. Since the assembling method is a well-known method, the explanation is omitted.

A cutout portion 4H is provided in a part of the cover member 4, and the colored smoke member 3 is exposed forward from the cutout portion 4H. As a result, the exposed portion forms a black marking portion 3E. Here, as shown in FIG. 1, the notation "SAKAE" appears in black. The cross-sectional view of FIG. 2 is a simplified illustration of the AA cross-section of FIG. 1, and does not represent the cross-section with accurate dimensions.

In the present invention, "not having light transmittance" means that the light transmittance is less than 5%, and "having light transmittance" means that the light transmittance is 5% or more. do.

A light diffusion layer 9 can be formed on the surfaces of the translucent member 2 and the colored smoke member 3 . The light diffusion layer 9 is formed by subjecting the surfaces of the light-transmitting member 2 and the colored smoke member 3 to a known roughening treatment such as polishing or applying a light-diffusing material (white pigment, glass beads, etc.) during or after molding. etc.) can be formed by a known transparent resin layer addition treatment or adhesion treatment.

The light diffusion layer 9 here includes a front surface 2a (central surface) facing the front side of the central region 2A of the translucent member 2 and a back surface thereof (facing the rear side of the central region 2A of the translucent member 2). A light diffusing layer 9 is formed on three surface layers of a back surface (central back surface) 2b and a back surface 3b facing the rear side of the colored smoke member 3 by roughening treatment. More specifically, the light diffusing layer 9 includes the front surface 2a of the translucent member 2 facing the colored smoke member 3, the inner rear surface 2b1 of the central region 2A of the translucent member 2, and the translucent The outer rear surface 2b2 of the outer peripheral region 2B, which rises forward from the outer peripheral end of the central region 2A and spreads toward the outer peripheral side, and the rear surface 3b of the exposed portion (description portion 3E) of the colored smoke member 3 from the cover member 4. (representation part back surface) and .

In the vehicular light-emitting display device 1 formed in this way, when the light source device 10 is not lit, the colored smoke member 3 is exposed inside the notch portion 4H of the cover member 4, and the inside of the metal-like cover member 4 is exposed. A black inscription portion 3E (here, the character area "SAKAE" in FIG. 1) is formed in the . On the other hand, when the light source device 10 is turned on, the translucent member 2 transmits white light, so that the outer peripheral region 2B of the translucent member 2 emits white light. allows white light to pass therethrough, so that the writing portion 3E also emits white light. The description part 3E in this embodiment describes the emblem of the vehicle. In this embodiment, since the light diffusion layers 9 are formed in three layers, the above-described light emitting region can emit light evenly and uniformly.

In this embodiment, the case body 5, the circuit board 6, and the translucent member 2 are formed with communication holes 8H for communicating the space 8 (air layer) with the outside. In the vehicle light-emitting display device 1 of this embodiment, an airtightness check may be performed to check whether or not water has entered. For this reason, originally, it would be desirable to design the luminous display device 1 for a vehicle so that the space 8 is not formed in order to save the trouble of forming the communication hole 8H in the translucent member 2 . However, by intentionally forming the space 8 in order to form more light diffusion layers 9, uniform light emission of the light emitting regions (3E, 2B) is realized.

Furthermore, in the vehicular light-emitting display device 1 of this embodiment, the case body 5 , the translucent member 2 , and the colored smoke member 3 form a sealed internal space inside the device. The internal space is covered with a cover member 4 that does not transmit light on the front side, and a case body 5 that does not transmit light on the rear side (further rear side of the side surface). As a result, the internal space becomes a dark space into which it is difficult for light to enter. In particular, since the cover member 4 covers the periphery of the description part 3E, the space behind the description part 3E becomes a darker space. When the description part 3E is visually recognized when the light source device 10 is in a non-light-emitting state, the colored smoke member 3 forming the description part 3E is affected by the color of the structure behind it due to the presence of a dark space behind it. It becomes difficult and it becomes possible to visually recognize more black.

Although one embodiment of the present invention has been described above, this is merely an example, and the present invention is not limited to this. For example, various modifications are possible based on the knowledge of those skilled in the art, such as omitting some components in the above embodiments and adding other components.

Other embodiments and modifications of the present invention will be described below. A detailed description of the functional units common to or similar to those of the above embodiments will be omitted. Moreover, the above-described embodiment and the following modified example can be combined as appropriate within a range that does not cause technical contradiction.

In the above embodiment, the black descriptive portion 3E constitutes the emblem of the vehicle, but it may be another design portion.

The various resin members (2, 3, 4, 5) of the above embodiments may be made of other resin materials as long as they satisfy conditions such as light transmittance and rigidity.

The communication hole 8H in the above embodiment may be omitted.

In the above embodiment, the light diffusion layer 9 is formed on the front surface 2a of the central region 2A of the translucent member 2, the rear surface 2b of the central region 2A, and the rear surface 3b of the marking portion 3E of the colored smoke member 3. Although it is formed, at least in the back area E of the writing part 3E, the back surface facing the rear side of the colored smoke member 3, the surface facing the front side of the translucent member 2, and the rear side of the translucent member 2 It suffices if it is formed on either or a plurality of the facing back surface. For example, as shown in FIG. 4, it may be formed on the back surface 3b (representation part back surface) of the colored smoke member 3 and the back surfaces 2b1 and 2b2 (central back surface and outer back surface) of the translucent member 2. 5, it may be formed on the front surface 2a (central surface) of the translucent member 2 and the back surfaces 2b1 and 2b2 (the central back surface and the outer back surface) of the translucent member 2. FIG.

2, 4, and 5, the back surface 3b (representation part back surface) of the colored smoke member 3, the front surface 2a (central surface) of the translucent member 2, and its back surface 2b1 (central back surface) are formed at least at a portion corresponding to the back region E of the inscription portion 3E. However, the light diffusion layer 9 in the present invention is not limited to the surfaces 3b, 2a, and 2b1, and is, for example, the entire back surface of the colored smoke member 3, the entire surface of the translucent member 2, the entire back surface of the translucent member 2, and the like. , may be formed in a wider area including those surfaces 3b, 2a, 2b1.

In the above embodiment, the space 8 (air layer) is provided between the translucent member 2 and the colored smoke member 3 to enable the formation of three light diffusion layers 9. However, as shown in FIG. 2 spaces 8 can also be eliminated. In this case, the light diffusion layer 9 can be formed on the rear surface 2b (outer rear surface 2b2) of the translucent member 2 and the rear surface 3b (representation part rear surface) of the colored smoke member 3. FIG.

REFERENCE SIGNS LIST 1 light-emitting display device for vehicle 2 translucent member 2A central region (predetermined region) of translucent member
2B Peripheral region of translucent member 3 Colored smoke member 3E Inscription part 4 Cover member 4H Notch part 5 Case body 8 Space 9 Light diffusion layer 10 Light source device

Claims (3)

a light source device;
a colored translucent member that is arranged on the front side of the light source device and has optical transparency;
a colored smoke member arranged to cover a predetermined region of the translucent member from the front side and made of a black resin material having a light transmittance of 50% or less;
a non-light-transmitting cover member arranged to cover the colored smoked member from the front side, and having a notch portion provided in a part thereof to expose the colored smoked member to the front side to form a notation portion; ,
a rear surface facing the rear side of the colored smoke member, a surface facing the front side of the translucent member, and a rear surface facing the rear side of the translucent member, at least in the area behind the inscription portion; A light diffusion layer is formed on one or more of
The colored smoke member is integrated with the light-transmitting member on the outer peripheral side in the area behind the cover member, and forms a space between the light-transmitting member facing the predetermined area on the inner peripheral side. A light-emitting display device for a vehicle, characterized in that: The light source device is fixed, the case body is arranged behind the translucent member and has no light transmissivity,
2. The luminous display device for a vehicle according to claim 1, wherein the space is sandwiched between the cover member and the case body. The light diffusing layer is provided on either or both of the rear surface facing the rear side of the colored smoked member and the surface facing the front side of the predetermined region of the translucent member at least in the region behind the writing portion. 3. The luminous display device for a vehicle according to claim 1 , wherein the luminescence display device is formed.

Images