JP5013957B2 - Display device - Google Patents

Description

  The present invention relates to a display device, and more particularly to a display device that displays a predetermined display design.

  As the conventional display device described above, for example, as shown in FIG. 8, an indicating device used for a meter such as a speedometer 6 a or a tachometer 6 b mounted on a vehicle is generally known. As shown in FIG. 9, these meters 6 a and 6 b include a dial plate 61 on which a display design such as scales, numerals, characters, or symbols is formed on the surface, and a pointer 64 disposed on the front surface of the dial plate 61, A movement 63 which is arranged on the back surface of the dial 61 and drives the pointer 64 in accordance with a measured amount such as a vehicle speed or an engine speed, for example, and a printed circuit board 9 which is provided on the back surface of the dial 61 and on which the movement 63 is mounted; A dial light source L2 that is mounted on the printed board 9 and illuminates the dial 61 from the back surface, and a reflecting surface 80 that reflects the light from the dial light source L2 to the dial 61 are provided.

  Further, the meters 6a and 6b accommodate the dial plate 61, the hands 64, and the printed circuit board 9 described above, the case 2 including the reflective surface 80, the back cover 3 that covers the back surface of the case 2, and the front surface that covers the front surface of the case 2. A glass 5, a ring member 66 that decorates the dial 61, and a facing plate 4 that hides the movement 63 and the like are provided.

  The dial 61 is composed of a transparent substrate, a colored transmission layer that is provided in front of the transparent substrate and represents the display design, and a light shielding layer from which the display design is removed.

  According to the above configuration, the dial 61 is illuminated by natural light from the front during the daytime, and the display design can be visually recognized. At night, the dial 61 is illuminated by the dial light source L2 from the back, and the display design shines so that the display design can be visually recognized.

However, the display device configured as shown in FIGS. 8 and 9 has a problem that the decoration effect is insufficient and novel display cannot be performed. Moreover, what is shown to patent document 1 is proposed as a display apparatus which improved visibility.
JP 2004-333361 A

  In view of the above, the present invention focuses on the above-described problems, and an object thereof is to provide a display device capable of performing more innovative display.

The invention according to claim 1, which has been made in order to solve the above-described problem, is a display device that displays a predetermined display design, and is provided on a front surface of the light shielding layer from which a portion corresponding to the display design is removed, and A light-transmitting smoke layer colored in a dark color system, and a display design that is disposed on the front side of the dial and has substantially the same shape as the display design on the dial And a light guide plate illumination light source for illuminating the light guide plate .

  According to the invention described in claim 1, the dial is composed of a light shielding layer from which a portion corresponding to the display design is removed and a light-transmitting smoke layer colored in a dark color system provided in front of the light shielding layer, The light guide plate disposed on the front side of the dial plate is provided with a display design having substantially the same shape as the display design on the dial plate. According to the above configuration, when the light is not incident from the back of the dial, the light from the front of the dial is attenuated by the smoke layer, so the display design on the dial cannot be visually recognized, and the display on the light guide plate Only the design is visible. On the other hand, when light is incident from the back side of the dial, the display design on the dial is brilliantly viewed on the back side of the display design on the light guide plate, and the display design is viewed three-dimensionally.

  According to a second aspect of the present invention, the display design on the dial and the display design on the light guide plate are provided so as to overlap each other while being shifted from each other. It exists in the display device.

  According to the invention described in claim 2, since the display design on the dial plate and the display design on the light guide plate are provided so as to overlap with each other, the light is incident from the back of the dial plate. The display design on the dial is brilliantly viewed in a state of being shifted to the back side of the display design on the light guide plate.

According to a third aspect of the invention, the incident be disposed on the back of the dial, the dial light source for illuminating the dial, on the back of the light the dial from the previous Kishirube light plate light source The display device according to claim 1, further comprising: a light shielding wall provided between the light source for the dial plate and the light source for the light guide plate.

  According to invention of Claim 3, the light-shielding wall provided between the light source for dial plates and the light source for light guide plates is provided so that the light from the light source for light guide plates may not inject into the back surface of a dial plate. Yes. According to the above configuration, when only the light source for the light guide plate is turned on, the display design on the light guide plate is visually recognized with the entire light guide plate shining. At this time, since the light from the light source for the light guide plate is not incident from the back surface of the dial due to the light shielding wall, the display design on the dial is not visually recognized. When the dial light source is turned on, light enters from the back side of the dial plate, and the display design on the dial plate shines on the back side of the display design on the light guide plate.

  According to a fourth aspect of the invention, there is provided a display device according to the third aspect, further comprising light source control means for turning on the light source for the dial plate after the light source for the light guide plate is turned on first.

  According to the fourth aspect of the present invention, the light source control means turns on the dial plate light source after the light guide plate light source is turned on first, so that the display design is raised due to the change in the display design.

  As described above, according to the first aspect of the present invention, when light is not incident from the back of the dial, the light from the front of the dial is attenuated by the smoke layer, so that the display design on the dial is visually recognized. Only the display design on the light guide plate is visible. On the other hand, when light is incident from the back of the dial, the display design on the dial is brilliantly viewed on the back side of the display design on the light guide plate, and the display design is viewed in three dimensions. Different display designs are visually recognized depending on whether or not light is incident from the back surface of the display, and a more innovative display can be performed.

  According to the second aspect of the present invention, when light is incident from the back surface of the dial plate, the display design on the dial plate is brilliant and visually recognized in a state of being shifted to the back side of the display design on the light guide plate. , More novel display can be performed.

  According to the third aspect of the present invention, when only the light source for the light guide plate is turned on, the display design on the light guide plate is visually recognized with the entire light guide plate shining. At this time, since the light from the light source for the light guide plate is not incident from the back surface of the dial due to the light shielding wall, the display design on the dial is not visually recognized. When the light source for the dial plate is turned on, light is incident from the back side of the dial plate, and the display design on the dial plate is brilliantly viewed on the back side of the display design on the light guide plate, so only the light source for the light guide plate Different display designs are visually recognized when the light source is turned on and when both the light source for the light guide plate and the light source for the dial plate are turned on, and a more innovative display can be performed.

  According to the invention described in claim 4, since the display design is raised due to the change of the display design, a more innovative display can be performed.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. A display device according to an embodiment of the present invention is used in a vehicle combination meter 1 as an instrument device.

  The vehicle combination meter 1 is attached to, for example, an instrument panel of a vehicle. As shown in FIGS. 1 and 2, the vehicle combination meter 1 includes a case 2 as an instrument case, a back cover 3, a facing plate 4, a front glass 5, a display instrument 6, and a travel distance. A liquid crystal display (LCD) 7 for displaying various information and a trip knob 8 are provided.

  The case 2 is formed of a synthetic resin or the like, and a dial 61, a light guide plate 62, and the like which will be described later are attached to the front side thereof. The back cover 3 is assembled to the outer edge of the case 2.

  As shown in FIG. 2, the case 2 accommodates a movement 63, a pointer light source L1, a dial light source L2, a light guide plate light source L3, and the like. The case 2 further accommodates a printed circuit board 9 that is electrically connected to the movement 63, the pointer light source L1, the dial light source L2, the light guide plate light source L3, and the like. The printed circuit board 9 is provided between the case 2 and the back cover 3, and is used to control the operation of the movement 63 and on / off of the pointer light source L1, the dial light source L2, and the light guide plate light source L3. An electronic component or the like shown in FIG. 5 is mounted.

  The facing plate 4 is arranged on the passenger side of the moving body of the dial plate 61 and the light guide plate 62, that is, on the front side, and is attached to the case 2. The facing plate 4 is formed with an exposure window for exposing the dial 61 and the light guide plate 62 to the occupant of the moving body, and moves other than the display parts such as the speedometer 6a and the tachometer 6b as the display instrument 6. Shield against body occupants.

  The front glass 5 is formed of a resin or the like that is formed in a plate shape and has transparency. The front glass 5 is arranged on the front side of the facing plate 4. The front glass 5 is provided with locking claws (not shown) protruding from the outer edge toward the case 2. The locking claw is housed in the locking receiving groove of the case 2 and locked.

  The display instrument 6 includes a speedometer 6a (display device) for instructing the speed of the vehicle and a tachometer 6b (display device) for instructing the engine speed of the vehicle. Since the speedometer 6a and the tachometer 6b have the same configuration, the speedometer 6a will be described below as a representative.

  As shown in FIG. 2, the speedometer 6a includes a dial 61, a light guide plate 62 made of a transparent member, a plurality of pointer light sources L1, a plurality of dial light sources L2, and a plurality of light guide plate light sources L3. And a movement 63, a pointer 64, a decorative plate 65, and a ring member 66.

  As shown in FIGS. 3 and 4, the dial plate 61 has a disk shape, a light transmitting substrate 61 a, for example, a light shielding layer 61 b provided by printing a light shielding ink, and a light transmission colored, for example, in a dark color system. It is composed of a smoke layer 61c provided by printing a characteristic ink and a hard coat 61d.

  As shown in FIG. 3, in the outer peripheral portion of the dial 61 on which numerals 61e and scales 61i (= shown in FIG. 1) as display designs indicating the speed of the vehicle are formed, the light shielding layer 61b is formed on the transparent substrate 61a. It is provided on the back side. In this outer peripheral portion, the light shielding layer 61b has portions corresponding to numerals 61e, scales 61i, and the like, and a light-transmitting colored layer 61f is provided on the cut portions. Moreover, the smoke layer 61c is provided in the front surface of the translucent board | substrate 61a in the outer peripheral part. That is, the smoke layer 61c is provided in front of the light shielding layer 61b.

  Further, as shown in FIG. 4, in the inner peripheral portion of the dial 61 on which the pattern 61g (= display design) is formed, the light shielding layer 61b has a portion corresponding to the pattern 61g and the like cut out. A light-transmitting colored layer 61h is provided on the back side of the light-transmitting substrate 61a opposite to the transparent substrate 61a.

  The light guide plate 62 is provided on the front side of the dial plate 61 with a constant interval d (for example, 0 to 5 mm), and guides light from the light source L3 for the light guide plate. On the back surface of the light guide plate 62, numerals 61e, scales 61i, and patterns 61g on the dial 61 are provided with numerals 62a, scales 62b (shown in FIG. 1), and patterns 62c. In the present embodiment, as shown in FIG. 3A, the numbers 61e and scales 61i on the dial plate 61 and the numbers 62a and scales 62b on the light guide plate 62 are provided so as to be overlapped with each other while being shifted from each other. . Further, as shown in FIG. 2, the light guide plate 62 is provided with an incident portion 62d that protrudes toward the back surface on the outer periphery, and light from the light source L3 for the light guide plate enters from the incident portion 62d.

  The pointer light source L1, the dial light source L2, and the light guide light source L3 are mounted on the front side of the printed circuit board 9. As shown in FIG. 2, the plurality of pointer light sources L <b> 1 are arranged so as to surround the proximal end portion of the pointer 64. The dial light source L2 is disposed so as to surround the pointer light source L1. A first light shielding wall 21 that is a part of the case 2 is disposed between the pointer light source L1 and the dial light source L2. The light from the pointer light source L1 is incident on the back surface of the light guide plate 62 and the dial plate 61 by the first light shielding wall 21 of the case 2, and the light from the dial plate light source L2, the light guide plate light source L3, and the LCD light source L4. Does not enter the pointer 64.

  The light guide plate light source L3 is disposed at a position facing the incident portion 62d of the light guide plate 62. Between the dial plate light source L2 and the light guide plate light source L3, a second light shielding wall 22 (= light shielding wall) which is a part of the case 2 is disposed. The light from the light source L3 for the light guide plate is prevented from entering the back surface of the dial 61 by the second light shielding wall 22 of the case 2.

  Each of the movements 63 is connected to vehicle speed measurement means (not shown) mounted on the vehicle. The movement 63 includes a rotating shaft that rotates in accordance with the measurement amount measured by the measuring means.

  The pointer 64 is made of a light guide material having translucency such as acrylic resin. The pointer 64 is attached to the rotation shaft of the movement 63 at the base end, and is attached with the base end located at the center of the dial 61 and the light guide plate 62 as shown in FIG. The pointer 64 rotates integrally with the rotation shaft of the movement 63. The pointer 64 is rotated by the movement 63 according to the measurement amount measured by each measuring means, and is measured in cooperation with the numbers 61e and 62a, the scales 61i and 62b, etc. on the dial 61 and the light guide plate 62. Display quantity.

  The decorative plate 65 is attached to the front surface of the light guide plate 62 and decorates around the rotation axis of the pointer 64. The ring member 66 is disposed on the front surface of the dial 61 along the outer edge thereof.

  Next, the electrical configuration of the vehicle combination meter 1 shown in FIG. 1 will be described with reference to FIG. The microcomputer 10 mounted on the printed circuit board 9 operates upon receiving power from the power supply 11. The power supply 11 also supplies power to the light guide plate light source L3 and the dial plate light source L2. As is well known, the microcomputer 10 includes a central processing unit (CPU) 10a that performs various processes and controls according to a predetermined program, a ROM 10b that is a read-only memory that stores a program for the CPU 10a, and the like. A RAM 10c, which is a readable / writable memory having an area necessary for processing operations of the CPU 10a as well as storing data, is configured.

  The light guide plate light source L3 and the dial plate light source L2 described above are connected to the CPU 10a so that on / off of the light can be controlled. Further, an ignition (hereinafter referred to as IGN) switch is connected to the CPU 10 a via an interface (hereinafter referred to as I / F) 12.

  The operation of the vehicle combination meter 1 configured as described above will be described below with reference to the flowchart of FIG. First, the CPU 10a turns off both the light guide plate light source L3 and the dial plate light source L2 while the IGN switch is off (N in step S1). At this time, as shown in FIG. 7A, the numbers 62a, scales 62b, and patterns 62c on the light guide plate 62 are visually recognized from the front by natural light from the front. The light guide plate 62 has a certain thickness, and the numbers 62a, scales 62b, and patterns 62c on the light guide plate 62 are visually recognized in three dimensions. On the other hand, the number 61e, the scale 61i, and the pattern 61g on the dial 61 cannot be visually recognized from the front by the smoke layer 61c.

  When the IGN switch is turned on (Y in step S1), the CPU 10a turns on only the light guide plate light source L3 among the light guide plate light source L3 and the dial plate light source L2 (step S2). Thereby, the light from the light source L3 for the light guide plate enters from the incident portion 62d of the light guide plate 62, and is guided through the light guide plate 62 while repeating reflection between the front surface and the back surface. As a result, the entire light guide plate 62 appears to be colored by the light from the light source L3 for the light guide plate, and the numbers 62a, scales 62b, and patterns 62c on the light guide plate 62 also change color due to the light from the light source L3 for the light guide plate.

  When the CPU 10a exceeds a certain time from the on-control of the light guide plate light source L3 (Y in step S3), the CPU 10a controls the dial light source L2 on (step S4). The light from the dial light source L2 reaches the passenger through the numeral 61e, scale 61i, and pattern 61g provided by cutting out the light shielding layer 61b. As a result, the numbers 61e, scales 61i, and patterns 61g on the dial plate 61 are brilliantly viewed on the back side of the numbers 62a, scales 62b, and patterns 62c on the light guide plate 62.

  As is clear from the above operation, the CPU 10a functions as a light source control means.

  According to the vehicle combination meter 1 described above, the dial 61 is provided with the light shielding layer 61b from which the portions corresponding to the numbers 61e, the scale 61i, and the pattern 61g as display designs are removed, and the dark color system provided in front of the light shielding layer 61b. A light-transmitting smoke layer 61c colored on the front surface of the dial 61, and the light guide plate 62 has numerals 61e, scales 61i, and a pattern 61g on the dial 61 that have substantially the same shape. A scale 62b and a pattern 62c are provided. As a result, when the dial light source L2 is turned off and no light is incident from the back surface of the dial 61, the light from the front of the dial 61 is attenuated by the smoke layer 61c. The scale 61i and the pattern 61g are not visible, and only the numbers 62a, the scale 62b, and the pattern 62c on the light guide plate 62 are visible. On the other hand, when the dial light source L2 is turned on and light is incident from the back side of the dial 61, the numbers 62a and scales 62b on the light guide plate 62 and the numbers 61e and scales on the dial 61 on the back side of the pattern 62c. 61i and the pattern 61g are brilliant and visually recognized, and display designs such as numbers, scales, and patterns are visually recognized in three dimensions. Therefore, the display design differs depending on whether light is incident from the back of the dial 61 or not. Can be visually recognized, and a more innovative display can be performed.

  According to the vehicle combination meter 1 described above, the number 61e on the dial 61, the scale 61i, the number 62a on the light guide plate 62, and the scale 62b are provided so as to overlap with each other. When light is incident from the back surface of 61, the number 61a on the light guide plate 62 and the number 61e on the dial plate 61 and the scale 61i are viewed with shining in a state of being shifted to the back side of the scale 62b. Display can be performed.

  According to the vehicle combination meter 1 described above, since the CPU 10a turns on the dial plate light source L2 after turning on the light guide plate light source L3 first, the display design floats due to changes in the display design such as numbers, scales, and patterns. There is a sense of uplift and a more innovative display can be performed.

  In the above-described embodiment, the light source L2 for the dial plate is turned on after a lapse of a certain time after the light source L3 for the light guide plate is turned on in response to the IGN switch being turned on. However, the present invention is limited to this. is not. For example, when the light source L3 for the light guide plate is turned on in response to the IGN switch being turned on, the display is emphasized when the warning, the importance of the caution, the degree of danger changes, the speed or the rotational speed exceeds the threshold, etc. The dial light source L2 may be controlled to be turned on when it is desired or when it is desired to enhance the effect.

  In the above-described embodiment, the light guide plate light source L3 and the dial plate light source L2 are turned on in this order. However, the present invention is not limited to this, and the light guide plate light source L3 and the dial plate light source are used. L2 may be turned on simultaneously.

  Further, in the above-described embodiment, the numbers 61e and scales 61i on the dial plate 61 and the numbers 62a and scales 62b on the light guide plate 62 are provided so as to be overlapped with each other while being shifted from each other. It is not limited. As described above, it is optimal to shift the position. However, for example, the number 61e and scale 61i on the dial 61 may be provided so that the number 62a and scale 62b on the light guide plate 62 completely overlap.

  Further, in the above-described embodiment, the front glass 5 is provided in a transparent manner, and even when the light source L3 for the light guide plate and the light source L2 for the dial plate are not turned on with IGN off, the numbers 62a, scales 62b, and patterns on the light guide plate 62 Although 62c was made visible, the present invention is not limited to this. The front glass 5 may be a black face so that the numbers, scales, and patterns on the light guide plate 62 can be visually recognized by turning on the light source L3 for the light guide plate.

  In the above-described embodiment, the numbers 62a, scales 62b, and patterns 62c on the light guide plate 62 are provided on the back surface of the light guide plate 62. However, the present invention is not limited to this, and may be provided on the front surface. .

  In the above-described embodiment, the numbers 62a, scales 62b, and patterns 62c on the light guide plate 62 are provided by printing colored light-transmitting ink. However, the present invention is not limited to this. . For example, a light-shielding ink may be printed and provided, or portions corresponding to the numbers 62a, scales 62b, and patterns 62c may be provided in a concave or convex shape.

  Further, the above-described embodiments are merely representative forms of the present invention, and the present invention is not limited to the embodiments. That is, various modifications can be made without departing from the scope of the present invention.

It is a front view which shows one Embodiment of the combination meter for vehicles incorporating the display apparatus of this invention. It is a partially broken perspective view of the speedometer which constitutes the vehicle combination meter shown in FIG. (A) is the enlarged view of A part of the combination meter for vehicles shown in FIG. 1, (B) is the BB sectional drawing of (A). (A) is an enlarged view of the C portion of the vehicle combination meter shown in FIG. 1, and (B) is a sectional view taken along the line DD of (A). It is an electrical block diagram of the vehicle combination meter shown in FIG. It is a flowchart which shows the process sequence of CPU shown in FIG. It is explanatory drawing for demonstrating the effect of the combination meter for vehicles shown in FIG. It is a front view which shows an example of the conventional display apparatus. It is the EE sectional view taken on the line of the display apparatus shown in FIG.

Explanation of symbols

10a CPU (light source control means)
22 Second light shielding wall (light shielding wall)
61 Dial 61b Light shielding layer 61c Smoke layer 61e Numbers (display design on the dial)
61g Pattern (display design on dial)
61i scale (display design on dial)
62 Light guide plate 62a Number (display design on the light guide plate)
62b Scale (display design on light guide plate)
62c Pattern (display design on light guide plate)
L2 Light source for dial plate L3 Light source for light guide plate

Claims (4)

In a display device that displays a predetermined display design,
A dial plate provided with a light-shielding layer from which a portion corresponding to the display design is removed, and a light-transmitting smoke layer colored in a dark color system provided in front of the light-shielding layer;
A light guide plate disposed on the front side of the dial plate and provided with a display design having substantially the same shape as the display design on the dial plate;
A light guide plate illumination light source for illuminating the light guide plate;
A display device comprising:   The display device according to claim 1, wherein the display design on the dial plate and the display design on the light guide plate are provided so as to overlap each other in a shifted state. A dial light source disposed on the back of the dial for illuminating the dial;
A light-shielding wall provided between the light guide plate for the light source and the dial plate for the light source so as not to be incident on the back of the light from the front Kishirube light plate light source the dial,
The display device according to claim 1, further comprising:   The display device according to claim 3, further comprising a light source control unit that turns on the dial plate light source after the light guide plate light source is turned on first.

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