JP2002023669A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device which gives a sense of depth of a display part by light radiated from a light source and has a satisfactory appearance and enhances the illumination effect of transparent illumination of the display part. SOLUTION: The display device in which a light-transmissive substrate 13 made of a synthetic resin is irradiated with light radiated from a light source 15 to illuminate a display part 16 provided on the substrate 13 is provided with a projecting light transmission part 20 for light reception which is formed integrally with the substrate 13 at the rear of a position of the display part 16 arranged at the substrate 13 facing the light source 15 in order to receive the light radiated from the light source 15 and a light scattering part 21 which is provided in the rear part of the projecting light transmission part 20 for light reception in order to irregularly reflect the light from the light source 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention displays the operating state of a special vehicle such as a construction machine or a ship, or a vehicle such as an automobile or a motorcycle, or displays an alarm when an abnormality occurs in a ship or a vehicle. The present invention relates to a display device to notify.

[0002]

2. Description of the Related Art Conventionally, as a general configuration of an instrument device for displaying various kinds of traveling information mounted on a vehicle such as an automobile, for example, as shown in FIG.
Inside, an indicating instrument M for indicating an operating condition of the vehicle such as a fuel gauge or a thermometer is accommodated. As the indicating instrument M, an indicating board 3 is provided on the front side of the instrument main body 2 as an instrument for indicating in an analog manner. It is an instrument which is attached and fixed and reads the indication of the pointer 4 formed on the instrument main body 2 in comparison with a scale or a numerical value provided on the surface of the display panel 3, or from a liquid crystal display (not shown). An indicating instrument M for giving an instruction on a digital display or a bar graph is stored and fixed in the instrument case 1.

An indicator light 5 is provided inside the instrument case 1 to indicate the state of the oil pressure of the engine, the lighting state of the light, the state of the engine oil level, or various vehicle states such as the fuel remaining amount display and the gear position display. In this case, a display device or the like is provided for notifying by illuminating the light, and in this case, the display device is divided into the same number as the number of display items for notifying the state of the vehicle or the like so that the irradiation light of the indicator light 5 does not leak out. A cylindrical wall portion 6 for guiding light rays to the display device side is provided, and the indicator lamps 5 are disposed below the wall portion 6, and the surface side of the instrument device, that is, each of the cylindrical shapes is provided. Above the wall 6, a display unit 7, for example, by a pictorial display is printed on the surface of the display plate 3 to form the display device.

[0004]

By the way, in the above-mentioned conventional device, the display plate 3 is constituted by a flat substrate made of synthetic resin as a display device, and the display plate 3 is displayed on the display plate 3 by means such as printing. Due to the formation of the portion 7, when the indicator light 5 as a light source is turned on and the display portion 7 is transmitted and illuminated, the appearance is not satisfactory without a sense of depth.

Accordingly, the present invention is to solve the above-mentioned problem of the prior art, and has a good appearance while giving a sense of depth to the display section by the irradiation light from the light source. It is an object of the present invention to provide a display device capable of enhancing the display.

[0006]

According to a first aspect of the present invention, there is provided a display apparatus wherein a light beam emitted from a light source is applied to a transparent synthetic resin substrate to illuminate a display unit provided on the substrate. A light-receiving protruding light guide portion provided to receive irradiation light from the light source integrally with the synthetic resin substrate, behind a display portion position provided on the synthetic resin substrate facing the light source; A display device comprising: a light scattering portion provided on a rear surface portion of the light receiving protruding light guide portion for irregularly reflecting a light beam from the light source.

According to a second aspect of the present invention, there is provided a display according to the first aspect, wherein the light-scattering portion having a concave-convex shape formed by a diamond-cut pattern is formed on a back surface of the light-receiving protruding light-guiding portion. Device.

According to a third aspect of the present invention, in the first or second aspect, a light shielding layer including a ground color portion is formed on a surface of the synthetic resin substrate except for a position of the display portion. Display device.

According to a fourth aspect of the present invention, there is provided a display device according to any one of the first to third aspects, wherein a colored layer is applied to a surface of the synthetic resin substrate corresponding to the position of the display section. .

According to a fifth aspect of the present invention, there is provided a display device according to any one of the first to fourth aspects, wherein a dark translucent layer is applied to the surface of the synthetic resin substrate corresponding to the position of the display section. It is.

According to a sixth aspect of the present invention, in the first to fifth aspects, a plurality of the display portions are provided, and the light receiving protruding light guide portions are combined in accordance with the number of the display portions. The display device according to claim 1, wherein the display device is provided integrally with a resin substrate.

According to a seventh aspect of the present invention, in the first to sixth aspects of the present invention, the light guide tube portion enables the irradiation light from the light source to be guided to the display portion side around the light receiving projecting light guide portion. Is a display device characterized by being provided.

According to an eighth aspect of the present invention, there is provided a display device according to the seventh aspect, wherein a flexible light-shielding member is provided between the light guide cylinder and the back surface of the synthetic resin substrate. Device.

According to a ninth aspect of the present invention, in any one of the first to eighth aspects, a groove-like concave portion is formed on a back surface portion of the synthetic resin substrate so as to surround the light receiving projecting light guide portion. Display device.

A tenth aspect of the present invention is the display device according to any one of the first to ninth aspects, wherein the light source and the synthetic resin substrate are accommodated in a casing.

According to an eleventh aspect of the present invention, there is provided a display device according to the tenth aspect, wherein the casing and the light guide tube are integrally formed.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In a display device in which a light beam emitted from a light source irradiates a transparent synthetic resin substrate to illuminate a display unit provided on the substrate, the synthetic resin facing the light source is provided. Behind the display unit position provided on the substrate,
A light-receiving protruding light-guiding portion provided to receive the irradiation light from the light source integrally with the synthetic resin substrate, and a light-receiving protruding light-guiding portion provided on the rear surface of the light-receiving protruding light-guiding portion for irregularly reflecting the light from the light source. And a light scattering portion, the irradiation light from the light source is guided to the surface side of the synthetic resin substrate through the light receiving projecting light guide portion, so that the inner surface reflection by the light receiving projecting light guide portion is performed. The transmission effect of the display unit having a good sense of depth can be performed while enhancing the illumination effect, and the light scattering unit provided on the back surface of the light-receiving protruding light guide unit can provide a good appearance of the transmission illumination. It becomes possible.

Further, by providing a colored layer on the surface portion of the display section, the transmitted illumination color of the light source can be raised by the color of the colored layer, and a dark semi-transparent layer provided on the surface section of the display section. Thus, when the light source is not turned on, the form of the display unit can be blindfolded by the dark semi-transparent layer, and there is an effect that the display unit can be raised and the transmitted light can be illuminated when the light source is turned on.

In addition, a light guide tube is provided around the protruding light guide for receiving light so as to guide the irradiation light from the light source to the display. Light can be prevented from leaking to the synthetic resin substrate by arranging a flexible light shielding member between the light guide tube portion and the back surface of the synthetic resin substrate. Light rays leaking to the adjacent display unit side can be blocked, and confusing display state by pseudo lighting display can be suppressed, and squeak noise etc. can be prevented by flexible light shielding member, Moreover, by forming a groove-shaped concave portion on the back surface portion of the synthetic resin substrate around the light receiving projecting light guide portion,
Leakage of light rays incident on the synthetic resin substrate can be further suppressed.

In addition, since the light source and the synthetic resin substrate are housed in the casing, it is possible to prevent intrusion of dust and the like, and the casing and the light guide tube are integrally formed. As a result, the number of parts can be reduced, and in addition, the assembling workability can be improved.

[0021]

1 to 3 show a first embodiment of the present invention. The description will be made mainly on the structure of a display device which is a main part of this embodiment. The instrument device equipped with the display device of the present invention has almost the same structure as that of the conventional example, and the instrument casing 11 of the instrument device accommodates an indicating instrument M for indicating the driving condition of the vehicle. And
A display plate 13 made of a light-transmitting synthetic resin substrate is attached and fixed to the front side of the instrument main body 12 of the indicating instrument M, and the indication of the pointer 14 attached to the upper end of the pointer shaft of the instrument main body 12 is displayed on the display panel. The reading is performed in comparison with graduations and numerical values provided on the surface of the reference numeral 13.

The display device in this embodiment provided in the instrument device includes a light source consisting of an indicator light 15 for various vehicle states such as a lighting state of a light, a display state of a direction indicator, and a display of a gear position position. A display unit 16 is provided as a display device for notifying by illuminating.

The display section 16 in this embodiment has a ground color portion on the surface of the display plate 13 made of a light-transmitting synthetic resin substrate in accordance with the number of display items and excluding the position of the display section 16. The light-shielding layer 17 is formed by punching and printing, and a display window portion 18 is formed in which printing portions are cut out in accordance with the number of display items to be displayed by the punching printing. In the section 16, the display form of the display window section 18 is formed in a graphic form by a picture display (display of a direction indicator), and is transparent at least corresponding to the position of the display window section 18 in the form of a graphic form. In the display section 16 located on the left side of the display section 16 on the left side of the display section 18, an indicator 16 A (gear position display character) including characters, numerals, and symbols is provided.
Is formed in a step different from the step of printing the light shielding layer 17 serving as the ground color portion.

On the back side of the display plate 13 which is a light-transmitting synthetic resin substrate, a position of a display section 16 provided on the display plate 13 made of the synthetic resin substrate facing the display lamp 15 serving as the light source. Behind the display plate 13 which is a synthetic resin substrate, a light-receiving protruding light-guiding portion 20 for receiving irradiation light from the indicator lamp 15 serving as the light source is formed so as to protrude integrally therewith. A light scattering portion 21 provided for irregularly reflecting a light beam from the indicator lamp 15 is formed on a rear portion of the light portion 20.

In this embodiment, the light scattering portion 21 has a concave and convex shape in a diamond-cut pattern on the back surface of the light receiving projecting light guide portion 20 so that light rays are refracted.
Reflection or diffusion / condensation shines brilliantly, display panel 1
3 is configured so that it can be easily read from the front side.

The display device according to the present embodiment, which is provided in the instrument device, is provided to prevent the light beam of the indicator lamp 15 which is a light source for display from leaking, and to irradiate the irradiating beam of the indicator lamp 15 with the light receiving projection. A light guide tube 22 that can be guided to the display unit 16 via the light guide unit 20 is formed integrally with the instrument casing 11, and an upper end surface of the light guide tube 22 formed in a tubular shape. A flexible light shielding member 23 made of synthetic rubber or the like is disposed between the display panel 13 and the rear surface of the display panel 13 made of the transparent synthetic resin substrate.

In the display device configured as described above,
When the indicator light 15 disposed in the light guide tube portion 22 is turned on, the light emitted from the indicator light 15 is transmitted to the projecting light guide 2
0, the display portion 16 of the display plate 13 made of a synthetic resin substrate is directly transmitted and illuminated, and a part of the irradiation light beam emitted from the display lamp 15 is reflected by the inner surface reflection by the light receiving projecting light guide portion 20. It is possible to perform transmitted illumination of the display unit 16 with a sense of depth while enhancing the illumination effect. In addition, the light-scattering unit 21 having a diamond-shaped pattern provided on the back surface of the protruding light-guiding unit 20 for receiving light allows irradiation light to be emitted. The light is guided by reflection / refraction or diffusion / condensation, thereby enabling transmission illumination of the display unit 16 having a good appearance.

Since the coloring layer 19 is provided on the display window 18 of the display panel 13 which is the surface of the display section 16, the transmitted illumination color of the indicator lamp 15 is changed.
Can be raised by the color of
The indicator light 1 as the light source is provided around the projecting light guide section 20 for light reception.
By arranging the light guide tube portion 22 that can guide the irradiation light from 5 to the display portion 16 side, it is possible to increase the illumination efficiency and prevent light leakage to the outside. In addition, a flexible light-blocking member 23 is provided between the light guide cylinder 22 and the rear surface of the display panel 13 so that light rays incident on the display panel 13 made of a synthetic resin substrate are adjacent to each other. Light rays leaking to the display unit 16 can be blocked, so that a confusing display state due to pseudo lighting display can be suppressed, and a squeak sound can be prevented by the flexible light shielding member 23.

The indicator lamp 1 is installed in the instrument casing 11.
5 and the display plate 13 made of the synthetic resin substrate are accommodated, thereby preventing intrusion of dust and the like, and the instrument casing 11 and the light guide tube 22 are integrally formed. As a result, the number of parts can be reduced, and in addition, the assembling workability can be improved.

FIG. 4 shows a second embodiment of the present invention. In this embodiment, a display device is provided on a surface of a display plate 13 with a light-shielding portion formed of a ground color portion except for a position where 16 display portions are provided. The layer 17 is provided by punching and printing, and a display window portion 18 is formed in which printing portions are cut out in accordance with the number of display items to be displayed by the punching printing. The display mode of the display window 18 is formed by a graphic display, and the colored layer 19 that can be transmitted at least corresponding to the position of the display window 18 in the graphic form.
And a dark translucent layer 24 of a smoke print layer is formed on the surface side of the colored layer 19.
In addition, the display unit 16 located on the left side has an indicator unit 16 including characters, numerals, and symbols in the display area of the display window unit 18.
A is formed in a process different from the printing process of the light-shielding layer 17 serving as the ground color portion, and a dark-colored translucent layer 24 made of a smoke printing layer is formed at least in the region of the display window 18 like the right display portion 16 Is given.

On the back side of the display plate 13, which is a light-transmitting synthetic resin substrate, the synthetic resin substrate facing the display lamp 15 as the light source is formed in the same manner as in the first embodiment. Behind the position of the display unit 16 provided on the display plate 13, a light-receiving protruding light-guiding unit 20 for receiving a light beam emitted from the display lamp 15 is formed so as to protrude integrally with the display plate 13 which is the synthetic resin substrate. At the same time, a light scattering portion 21 for irregularly reflecting the light beam from the indicator lamp 15 is formed on the rear surface of the light receiving projecting light guide portion 20.

In the second embodiment, the display plate 13 which is a synthetic resin
A groove-shaped concave portion 25 is formed in the back portion of.

Therefore, in the second embodiment, the same function and effect as those of the first embodiment can be obtained, and the light source is provided by the dark semi-transparent layer 24 made of the smoke print layer applied to the surface of the display section 16. When the indicator lamp 15 is not lit, the form of the display unit 16 can be blinded by the dark semi-transparent layer 24, and the effect that the display unit 16 can be raised and illuminated by the transmitted light at the time of lighting can be obtained. is there.

Further, a flexible light-shielding member 23 is provided between the light guide tube portion and the rear surface of the display plate 13 made of a synthetic resin substrate, so that light rays incident on the display plate It is possible to block the light leaking to the adjacent display unit 16 side, to suppress the confusing display state by the pseudo lighting display, and also possible to prevent the squeak noise and the like by the flexible light shielding member 23, and By forming a groove-like concave portion 25 on the back surface of the display plate 13 around the light-receiving protruding light guide portion 20, leakage of light rays incident on the display plate 13 made of a synthetic resin substrate can be reduced. 25, the thickness of the display panel 13 itself is partially reduced, so that the display panel 1
It becomes difficult for the light beam guided into the substrate of No. 3 to reach far, and as a result, false lighting can be prevented.

It should be noted that the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention. For example, in the above-described embodiment, the indicator lamp 15 such as a lamp is used as a light source. Although a light source using a light emitting diode may be used, a light receiving projection formed on the back side of the display plate 13 corresponding to the position of the display unit 16 in order to give a sense of depth to the display unit 16. Optical part 2
A depth dimension of 0 may be appropriately set, and the configuration of the light scattering portion 21 formed on the back surface of the projecting light-guiding portion 20 for light reception, the depth dimension setting by unevenness, and the like are also appropriately set, so that the transmitted illumination is achieved. It is possible to arbitrarily set the width of the groove-like concave portion 25, the depth and the shape of the groove, etc. depending on the thickness of the display plate 13, and in some cases, By providing slits (elongated holes) in place of the grooves, light entering the display plate 13 may be prevented from leaking in the lateral direction of the substrate.

In each of the embodiments, the display unit 1 is provided on the surface of the display plate 13 when the display lamp 15 as a light source is turned off.
Although the dark semi-transparent layer 24 by smoke printing is applied to cover the form of the display panel 6, the display panel 13 itself is colored and smoked so that the display section 16 is covered when the light source is turned off. It may be configured.

In the present embodiment, the display panel is formed by one plate. However, for example, a plurality of independent display panels may be arranged side by side in accordance with the number of display items. The display device may be configured to be continuously arranged as in the present embodiment, may be used alone, or may be additionally provided to another display device or the like. In this embodiment, a display device such as a vehicle has been described as an example.
The present invention can also be applied to a display device for performing display, a display device for transmitting illumination of a display unit of operation switches of a copy machine, and the like.

[0038]

As described in detail above, in the display device according to the present invention, the light beam emitted from the light source is applied to the transparent synthetic resin substrate to illuminate the display section provided on the substrate. In the display device, a light-receiving protruding light guide provided to receive irradiation light from the light source integrally with the synthetic resin substrate, behind a position of a display unit provided on the synthetic resin substrate facing the light source. And a light scattering portion provided for irregularly reflecting light rays from the light source on the back surface portion of the light-receiving protruding light guide portion,
Since the irradiation light from the light source is guided to the surface side of the synthetic resin substrate through the light-receiving protruding light-guiding portion, the display portion has a sense of depth while enhancing the illumination effect by internal reflection by the light-receiving protruding light-guiding portion. In addition to being able to perform transmissive illumination, the light scattering portion provided on the back surface of the light-receiving protruding light-guiding portion enables transmissive illumination of the display unit with a good appearance.

[Brief description of the drawings]

FIG. 1 is a front view showing a structure of a display device mounted on an indicating instrument according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a main part of FIG.

FIG. 3 is an enlarged sectional view showing a main part of FIG. 2;

FIG. 4 is an enlarged sectional view of a main part showing a second embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a conventional meter device and display device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 11 instrument casing 12 instrument body 13 display plate (light-transmitting synthetic resin substrate) 14 pointer 15 indicator light (light source) 16 display section 16A indicator section 17 light-shielding layer (ground color section) 18 display window section 19 coloring layer 20 light receiving Projecting light guide section 21 Light scattering section (diamond cut pattern) 22 Light guide cylinder section 23 Light blocking member 24 Dark translucent layer (smoke printing) 25 Groove-shaped concave section

Claims (11)

[Claims] 1. A display device in which a light beam emitted from a light source irradiates a light-transmitting synthetic resin substrate to illuminate a display unit provided on the substrate. Behind the provided display unit position, a light-receiving protruding light-guiding unit provided to receive irradiation light from the light source integrally with the synthetic resin substrate, A display device comprising: a light scattering portion provided for irregularly reflecting a light beam from a light source. 2. The display device according to claim 1, wherein the light scattering portion having a concave-convex shape formed by a diamond-cut pattern is formed on a rear surface portion of the light receiving projecting light guide portion. 3. The display device according to claim 1, wherein a light-shielding layer made of a ground color portion is formed on a surface of the synthetic resin substrate except for a position of the display portion. 4. The display device according to claim 1, wherein a colored layer is applied to a surface of the synthetic resin substrate corresponding to the position of the display unit. 5. The display device according to claim 1, wherein a dark semi-transparent layer is provided on the surface of the synthetic resin substrate corresponding to the position of the display unit. 6. The display device according to claim 1, wherein a plurality of said display portions are provided, and said light-receiving protruding light guide portions are integrally provided on said synthetic resin substrate in accordance with the number of said display portions. The display device according to claim 1. 7. A light guide tube portion is provided around the light receiving projecting light guide portion so as to be able to guide an irradiation light beam from the light source to the display portion side. The display device according to claim 6. 8. The display device according to claim 7, wherein a flexible light-shielding member is provided between the light guide cylinder and a back surface of the synthetic resin substrate. 9. The display device according to claim 1, wherein a groove-like concave portion is formed on a back surface portion of the synthetic resin substrate so as to surround the light receiving projecting light guide portion. 10. The display device according to claim 1, wherein the light source and the synthetic resin substrate are accommodated in a casing. 11. The display device according to claim 10, wherein the casing and the light guide tube are integrally formed.