JP7035882B2 - Pointer and display device - Google Patents

Description

The disclosure herein relates to a guideline and a display device comprising the guideline.

Patent Document 1 discloses an instrument device having a pointer in which two light emitting regions are formed in the stretching direction. This pointer has a first light guide member having a first light emitting surface and a second light guide member having a second light emitting surface provided at a position farther from the rotation axis than the first light emitting surface. The instrument device is provided with a first light emitting element that irradiates the first light guide member with light and a second light emitting element that irradiates the second light guide member with light. By controlling the lighting of the two light emitting elements, the instrument device changes the light emitting state of each of the two light emitting surfaces and switches the display mode of the pointer.

Japanese Unexamined Patent Publication No. 11-281409

In the technique of Patent Document 1, the light guided by the first light guide member and the light guided by the second light guide member are emitted from different emission surfaces without overlapping each other. Therefore, it was not possible to create a novel change in luminescence.

An object disclosed is to provide pointers and display devices capable of displaying novel emission changes.

The plurality of aspects disclosed herein employ different technical means to achieve their respective objectives. Further, the scope of claims and the reference numerals in parentheses described in this section are examples showing the correspondence with the specific means described in the embodiment described later as one embodiment, and limit the technical scope. is not it.

One of the disclosed pointers is a pointer that indicates the display surface (30a) in the display device, and is a first light guide unit (10) that guides the first illumination light that has entered the inside, and a first light guide. The first light emitting region (13a), which is provided in the portion and emits light by reflecting the first illumination light to the visual recognition side, and the second illumination light which is laminated and arranged on the visual recognition side of the first light guide portion and has entered the inside. It is provided with a second light guide unit (20) for guiding light, and a second light emitting region (23a) provided in the second light guide unit and emitting light by reflecting the second illumination light toward the visual recognition side. , The first light emitting region and the second light emitting region are formed so as to overlap at least a part in the stretching direction, and constitute the entire region (A) in which the first light emitting region and the second light emitting region are overlapped in the depth direction. In the entire region, the ratio of the emission brightness by the first illumination light and the emission brightness by the second illumination light differs depending on the position in the stretching direction.

One of the disclosed display devices includes the above-mentioned pointer, a first light source (52) that emits the first illumination light, and a second light source (53) that emits the second illumination light.

According to these disclosures, the pointer emits light in a state where the first light emitting region and the second light emitting region are overlapped at least partially. In addition, the ratio of the emission luminance by the first illumination light and the emission luminance by the second illumination light differs depending on the position in the region where the first emission region and the second emission region are aligned in the depth direction. Therefore, it is possible to visually recognize the change in light emission due to the change in the state of overlap between the light emitted by the first illumination light and the light emitted by the second illumination light. As described above, it is possible to provide a pointer and a display device capable of displaying a novel change in light emission using the superposition of light.

It is a top view which shows the guideline and the display device which concerns on 1st Embodiment. FIG. 2 is a sectional view taken along line II-II of FIG. It is an enlarged view near the pointer of FIG. It is the figure which looked at the pointer from the visual recognition side. FIG. 4 is a sectional view taken along line VV of FIG. It is the figure which looked at the pointer from the anti-visual side. FIG. 4 is a sectional view taken along line VII-VII of FIG. It is an exploded perspective view of the 1st light guide part and the 2nd light guide part. It is a figure which shows the light emitting state in the 1st instruction part and the 2nd instruction part. It is a figure which shows the light emitting state of the pointer in the state which overlapped the 1st instruction part and 2nd instruction part. It is a figure which shows the light emitting state of the pointer in the state which overlapped the 1st instruction part and the 2nd instruction part in another embodiment.

(First Embodiment)
The display device 1 of the first embodiment will be described with reference to FIGS. 1 to 10. The display device 1 is provided as a vehicle combination meter. The display device 1 is attached in front of the driver's seat of the vehicle with the display surface 30a facing the driver's seat. In the following, the direction perpendicular to the display surface 30a is referred to as the depth direction, the driver's seat side in the depth direction is referred to as the visual recognition side, and the side opposite to the visual recognition side is referred to as the non-visual recognition side. The display device 1 provides a display function for displaying predetermined information to an occupant seated in the driver's seat. The display device 1 has a function as a speedometer for displaying vehicle speed information as an example of the display function.

The display device 1 includes a substrate 50, a pointer 100 that rotates around a rotation axis Ra, a display board 30 having a display surface 30a, a display light guide body 40, and a housing 70 that accommodates them. In the following description, the circumferential direction and the radial direction centered on the rotation axis Ra are simply referred to as "circumferential direction" and "diametrical direction". Further, the direction in which the rotation axis Ra extends is simply referred to as "axial direction".

As shown in FIG. 2, the housing 70 includes a glass plate 71, a facing plate 72, an upper case portion 73, and a lower case portion 74. The glass plate 71 is formed in a curved plate shape made of a translucent synthetic resin or the like. The glass plate 71 is attached to the facing plate 72 so as to cover the opening on the viewing side of the facing plate 72. The glass plate 71 of the first embodiment is provided as smoked glass that is colored, for example, black or gray and transmits light at a predetermined transmittance.

The facing plate 72 is formed of, for example, a synthetic resin or the like, and is formed in a cylindrical shape that surrounds the display surface 30a all around. The facing plate 72 is formed so that, for example, the lower portion of the display area is projected toward the visual recognition side more than the upper portion. The facing plate 72 holds down the outer edge portion of the display plate 30 from the visual recognition side and is fixed to the upper case portion 73.

The upper case portion 73 is formed of, for example, a light-shielding synthetic resin or the like. The upper case surrounds the housed components between the facing plate 72 and the lower case portion 74.

The lower case portion 74 is formed of, for example, a light-shielding synthetic resin or the like like the upper case portion 73. The lower case portion 74 is a member that covers the non-visual side of the display device 1, and holds the substrate 50 and the like from the non-visual side.

The substrate 50 is a printed wiring board in which a wiring pattern made of a conductive material such as copper is provided on an insulating base material formed in a flat plate shape by an insulating material such as resin or ceramics. The substrate 50 is arranged on the non-visual side of the display light guide 40 in a posture in which one side faces the visual recognition side and the other side faces the non-visual side. A stepper motor 51, a shaft light source 52, a plurality of display light sources 53, and the like are mounted on the substrate 50. In addition, a control circuit for executing lighting control such as lighting and extinguishing of the light sources 52 and 53 and rotation control of the stepper motor 51 is mounted on the substrate 50.

The stepper motor 51 is a drive member that rotates the pointer 100. The stepper motor 51 is provided on the visible surface of the substrate 50 and is connected to the shaft portion 11 of the pointer 100. The stepper motor 51 is electrically connected to a control circuit, and its drive is controlled by the control circuit. The stepper motor 51 rotates the shaft portion 11 to rotate the entire pointer 100 around the rotation axis Ra.

The shaft light source 52 and the plurality of display light sources 53 are each provided by an LED (light emitting diode). The light sources 52 and 53 are provided on the surface of the substrate 50 on the visual recognition side, respectively. The light sources 52 and 53 are electrically connected to the control circuit, respectively, and their lighting and extinguishing are controlled by the control circuit.

The shaft portion light source 52 is provided on the rotation axis Ra on the surface of the substrate 50. The shaft light source 52 emits illumination light that causes the first light emitting region 13a, which will be described later, to emit light. The color of the illumination light emitted by the shaft light source 52 is red. The shaft light source 52 is an example of the first light source, and the red illumination light emitted from the shaft light source 52 is an example of the first illumination light.

The plurality of display light sources 53 are provided on the outer peripheral side of the stepper motor 51 in the radial direction at positions facing each other on the anti-visual side end of the corresponding display introduction unit 41. The plurality of display light sources 53 emit illumination light that causes the second light emitting region 23a, which will be described later, to emit light. The color of the illumination light emitted by the plurality of display light sources 53 is white. The plurality of display light sources 53 is an example of the second light source, and the white illumination light emitted from the display light source 53 is an example of the second illumination light.

The display plate 30 is formed by molding a translucent base material made of, for example, a synthetic resin material. The display plate 30 is formed in a substantially flat plate shape as a whole. The display plate 30 is formed with an opening 30b through which the shaft portion 11 of the pointer 100 is inserted. An index unit 31 is formed on the display plate 30.

The index unit 31 is formed by printing or the like using a translucent paint. The index portion 31 is formed so as to be arranged in an arc shape around the shaft portion 11 of the pointer 100. The index unit 31 includes, for example, a scale index provided at predetermined intervals and a numerical index representing a speed value indicated by a corresponding scale index on the inner peripheral side of the scale index.

The display light guide body 40 is formed as an integral body by a translucent synthetic resin or the like. The display light guide body 40 has a display introduction unit 41, a light guide plate portion 42, and an injection end portion 43. The display light guide body 40 is provided between the display plate 30 and the substrate 50.

The display introduction portion 41 is formed in a columnar shape extending from the outer peripheral end portion of the light guide plate portion 42 to the anti-visual side. The display introduction unit 41 is formed in the same number as the display light source 53. The ends of the plurality of display introduction units 41 are close to the corresponding display light sources 53, respectively. The display introduction unit 41 guides the illumination light emitted from the display light source 53 to the light guide plate unit 42.

The light guide plate portion 42 is a portion formed in the shape of an annular flat plate. The light guide plate portion 42 is provided so as to surround the shaft portion 11 in the center. The light guide plate portion 42 is provided so as to spread along the surface of the display plate 30 on the anti-visual side. The light guide plate portion 42 is arranged so as to cover the region of the display plate 30 in which the index portion 31 is formed from the anti-visual side. The light guide plate portion 42 is exposed to the visual recognition side from the opening 30b. The light guide plate unit 42 guides the illumination light that has entered from the display introduction unit 41 to the emission end portion 43 side, and emits a part of the illumination light from the surface on the visual recognition side to cause the index unit 31 to emit light.

The injection end portion 43 is an end portion of the light guide plate portion 42 on the shaft portion 11 side of the pointer 100. That is, the injection end portion 43 is an inner peripheral edge portion of the light guide plate portion 42. The injection end portion 43 is formed so as to be closer to the shaft portion 11 in the radial direction than the opening portion 30b of the display plate 30. The ejection end portion 43 is formed with a reflective surface that reflects the illumination light that guides the inside of the light guide plate portion 42 toward the visual recognition side. The emission end portion 43 reflects the illumination light toward the visual recognition side on the reflecting surface, and emits the illumination light to the incident end portion 21 of the second light guide unit 20.

The pointer 100 rotates around the rotation axis Ra and points on the display board 30. The pointer 100 has a first light guide unit 10, a second light guide unit 20 stacked and arranged on the first light guide unit 10, and a pointer cap 19.

The first light guide portion 10 is integrally formed of a translucent material. The first light guide unit 10 has a shaft portion 11, a first light guide surface 11a, a central portion 12, a first instruction unit 13, and a first light emitting region 13a.

The shaft portion 11 is formed in a substantially cylindrical shape extending in the depth direction. The shaft portion 11 is provided so as to penetrate the display plate 30 in the depth direction. The central axis of the shaft portion 11 substantially coincides with the rotation axis Ra of the pointer 100. That is, the shaft portion 11 is the rotation shaft of the pointer 100.

The first light guide surface 11a is an inclined surface formed at an end portion of the shaft portion 11 on the visual recognition side. As shown in FIG. 5, the first light guide surface 11a is inclined with respect to the axial direction so as to approach the first indicator 13 from the anti-visual side to the visual side. The first light guide surface 11a provides a reflecting surface that reflects the illumination light that has entered the shaft portion 11 toward the first indicating portion 13.

The central portion 12 is a portion formed in a substantially semicircular shape centered on the rotation axis Ra. The central portion 12 is continuous with the shaft portion 11. The central portion 12 is a portion through which the illumination light reflected from the first light guide surface 11a passes toward the first indicator portion 13.

The first indicator portion 13 is a portion extended so as to project radially outward from the central portion 12. The first indicator 13 is formed in a needle shape in which the width dimension gradually decreases toward the tip end side in the stretching direction.

The first light emitting region 13a is formed on the bottom surface of the first indicator portion 13. The first light emitting region 13a is a region that emits light by reflecting the illumination light that guides the first light guide unit 10 toward the visual recognition side. More specifically, the first light emitting region 13a is composed of an aggregate of a large number of fine concave portions having a triangular columnar cross section formed inward from the outer surface of the bottom surface, and is guided to the first indicator portion 13. The illuminated illumination light is reflected to the visual recognition side on the slope of the concave portion. The aggregate of these recesses is set to a size that is invisible to human eyes when the illumination light is turned off.

The first light emitting region 13a is formed, for example, in a range of about 3/4 from the root in the stretching direction of the first indicating portion 13. The first light emitting region 13a is formed so that the light emitting brightness decreases toward the tip. Specifically, in the first light emitting region 13a, the size and depth of the recesses, the density of the pitches of a large number of recesses, and the like are set so that the amount of illumination light reflected toward the viewing side decreases toward the tip. ing. That is, the root of the first indicator 13 emits light at the maximum brightness, the brightness gradually decreases toward the tip, and the brightness becomes zero at about three-quarters from the root.

The second light guide portion 20 is integrally formed of a translucent material. The second light guide unit 20 has an incident end portion 21, a rotation center portion 22, a second light guide surface 22a, a second indicator unit 23, and a second light emitting region 23a.

The incident end portion 21 is provided on the side opposite to the indicating portions 13 and 23 with the shaft portion 11 interposed therebetween in the extending direction of the indicating portions 13 and 23. The incident end portion 21 is a surface facing the anti-visual side in the depth direction. The incident end portion 21 provides an incident surface when the illumination light emitted from the display light guide body 40, which will be described later, enters the inside of the second light guide unit 20.

The rotation center portion 22 is formed in a circular shape in a projection view in the depth direction. The center of the rotation center portion 22 substantially coincides with the axis of the shaft portion 11. A second light guide surface 22a is formed on the outer peripheral edge portion of the rotation center portion 22.

The second light guide surface 22a is an inclined surface formed on the outer side in the radial direction of the rotation center portion 22 with respect to the range in which the shaft portion 11 is projected in the depth direction. As shown in FIG. 4, the second light guide surface 22a is inclined with respect to the axial direction and the extension direction of the indicating portions 13 and 23 so as to approach the rotation axis Ra from the anti-visual side to the visual side. There is. The second light guide surface 22a provides a reflecting surface that reflects the illumination light incident on the rotation center portion 22 from the non-visual recognition side toward the second indicating unit 23.

The second indicator 23 is a portion of the second light guide 20 that is extended so as to project radially outward from the center of rotation. The second indicator 23 is formed so as to overlap the anti-visual side of the first indicator 13. That is, the first instruction unit 13 and the second instruction unit 23 are arranged in the depth direction. Like the first instruction unit 13, the second instruction unit 23 is formed in a needle shape that gradually narrows in width toward the tip end side in the stretching direction. The second indicator 23 and the first indicator 13 have substantially the same width dimension at the same position in the stretching direction. Further, the tip position of the second indicator 23 is set to be substantially the same as the tip position of the first indicator 13.

The second light emitting region 23a is formed on the bottom surface of the second indicator 23. The second light emitting region 23a is a region that emits light by reflecting the illumination light that guides the second light guide unit 20 toward the visual recognition side. More specifically, the second light emitting region 23a is composed of an aggregate of a large number of fine triangular columnar recesses formed inward from the outer surface of the bottom surface, similarly to the first light emitting region 13a. There is.

The second light emitting region 23a is provided discretely on the bottom surface of the second indicator 23 over the entire stretching direction. That is, the second light emitting region 23a is a set of a plurality of light emitting region portions 23a1 in which each of them is arranged apart from each other in the stretching direction. The second light emitting region 23a is formed so that the light emitting luminance becomes larger as the light emitting region portion 23a1 located at the tip in the stretching direction increases. Specifically, the size and depth of the recesses are set so that the amount of illumination light reflected toward the viewing side increases toward the tip of the light emitting region portion 23a1 located at the tip. The light emitting region portion 23a1 is formed so that the length of the second indicating portion 23 in the extending direction becomes larger as it is located at the tip end. The second light emitting region 23a overlaps with the first light emitting region 13a in the depth direction in a range excluding the vicinity of the tip in the stretching direction.

The pointer cap 19 is formed of a light-shielding resin material such as a black-colored polypropylene resin or an ABS resin. The pointer cap 19 is a member that covers the rotation center portion 22, the center portion 12, and the instruction portions 13, 23. The pointer cap 19 has a cylindrical wall portion 19a and an extended wall portion 19b. The cylindrical wall portion 19a is a portion formed in a bottomed cylindrical shape that opens on the non-visual side. The cylindrical wall portion 19a covers the rotation center portion 22 and the center portion 12 from the visual recognition side. The extended wall portion 19b is formed so as to extend radially outward from the side wall of the cylindrical wall portion 19a. The extended wall portion 19b provides a side wall covering the side surfaces of the indicating portions 13 and 23.

Next, the path of each illumination light emitted from the shaft portion light source 52 and the display light source 53, and the light emission state of the pointer 100 by each illumination light will be described.

As shown in FIG. 3, the red illumination light emitted from the shaft portion light source 52 heads toward the visual recognition side while being totally reflected inside the shaft portion 11, and is reflected by the first light guide surface 11a to be reflected by the first indicator unit. Head to 13. The illumination light that guides the first instruction unit 13 is reflected toward the visual recognition side in the first light emitting region 13a while heading toward the tip end side of the first instruction unit 13 as a whole.

As shown in FIGS. 8 and 9, the first indicator 13 emits light at the maximum brightness due to the illumination light from the shaft light source 52, and the brightness gradually decreases toward the tip, 4 minutes from the root. The brightness becomes zero at about 3 of. In FIGS. 8, 9, and 10, red light emission is indicated by dots, and the magnitude of luminance is represented by the magnitude of dots.

The white illumination light emitted from the display light source 53 is guided through the light guide plate portion 42, is emitted from the emission end portion 43, and enters the incident end portion 21 of the second light guide portion 20. The entering illumination light is reflected by the second light guide surface 22a in the direction of the second indicator 23. The illumination light that guides the second indicator 23 is reflected toward the viewing side in the second light emitting region 23a while heading toward the tip end side of the second indicator 23 as a whole.

As shown in FIGS. 8 and 9, the second indicator 23 emits light at the maximum brightness due to the illumination light from the display light source 53, and the brightness gradually decreases toward the root, and the region closest to the root. It emits light in a horizontal striped pattern so that the brightness becomes almost zero. In FIGS. 8, 9 and 10, white light emission is indicated by diagonal lines, and the magnitude of luminance is indicated by the thickness and density of the diagonal lines.

The instruction units 13 and 23 constitute an entire region A in which the first light emitting region 13a and the second light emitting region 23a are overlapped in the depth direction. The indicating units 13 and 23 are visually recognized from the visual recognition side as a light emitting state in which the light emitting state in the first light emitting region 13a and the light emitting state in the second light emitting region 23a are superimposed in the depth direction. At this time, in the entire region A extending in the stretching direction, where the illumination light of the first emission region 13a and the illumination light of the second emission region 23a are combined and visually recognized, the emission brightness by the white illumination light and the red illumination light are obtained. The ratio of emission brightness due to is different depending on the position. In the following, the emission brightness due to the white illumination light will be referred to as white emission brightness, and the emission brightness due to the red illumination light will be referred to as red emission brightness.

That is, for example, focusing on the portion of the entire region A where the first light emitting region 13a and the second light emitting region 23a overlap (overlapping region), the red emission luminance is the white emission luminance on the root side of the indicating portions 13 and 23. The ratio of red emission brightness to white emission brightness is relatively large. However, the ratio of the red emission luminance to the white emission luminance becomes relatively small because the white emission luminance increases while the red emission luminance decreases toward the tip side of the indicating units 13 and 23.

As a result, the portion where the first light emitting region 13a and the second light emitting region 23a overlap is a mixture of the white illumination light and the red illumination light toward the tip side from the root side of the indicating portions 13 and 23. The emission color changes when viewed from the visual side. Specifically, a horizontal striped emission change in which the emission color gradually changes from red to pink to white is displayed.

Further, since the emission luminance of the first light emitting region 13a is substantially zero in the vicinity of the tips of the indicating units 13 and 23, the emission is visually recognized as a white horizontal stripe pattern whose luminance becomes larger toward the tip. In addition, since the length of each light emitting region portion 23a1 in the second light emitting region 23a in the stretching direction increases toward the tip, each white light emitting range in a horizontal stripe pattern is in the stretching direction. It is visually recognized that it becomes larger as it goes toward.

Further, for example, focusing on the overlapping region of the entire region A and the portion of only the first light emitting region 13a between the second light emitting regions 23a, in the overlapping region, white light emission is predetermined with respect to the red emission luminance. While the white emission luminance is mixed, the white emission luminance is substantially zero in the portion of only the first emission region 13a. That is, the ratio of the red emission luminance to the white emission luminance is 1: 0. That is, the indicating units 13 and 23 display a light emission change in which light emission in which red and white are mixed at a predetermined ratio and light emission in which only red light is alternately arranged along the stretching direction.

Next, the configuration and operation / effect of the guideline 100 of the first embodiment will be described.

The pointer 100 is provided in the first light guide unit 10 for guiding the illumination light that has entered the inside and the first light guide unit 10, and emits light by reflecting the illumination light from the shaft portion light source 52 toward the visual recognition side. It is provided with a first light emitting region 13a. The pointer 100 is provided on the visual side of the first light guide unit 10 and is provided on the second light guide unit 20 for guiding the illumination light that has entered the inside and the second light guide unit 20, and is provided on the display light source 53. It is provided with a second light emitting region 23a that emits light by reflecting the illumination light from the light source toward the visual recognition side. The first light emitting region 13a and the second light emitting region 23a are formed so as to overlap at least a part in the depth direction. Further, the first light emitting region 13a and the second light emitting region 23a constitute an entire region A in which the first light emitting region 13a and the second light emitting region 23a are aligned in the depth direction. The entire region A is formed so that the ratio of the emission brightness due to the illumination light from the shaft light source 52 and the emission brightness due to the illumination light from the display light source 53 differs depending on the position.

According to this, the pointer 100 emits light in a state where the first light emitting region 13a and the second light emitting region 23a are overlapped at least partially. In addition, the ratio of the emission brightness due to the illumination light from the shaft light source 52 and the emission brightness due to the illumination light from the display light source 53 is within the region where the first light emission region 13a and the second light emission region 23a are aligned in the depth direction. It depends on the position. Therefore, it is possible to visually recognize the change in light emission due to the change in the overlapping state of light emission due to each illumination light. As described above, it is possible to provide the guideline 100 capable of displaying a novel change in light emission using the superposition of light.

The first light emitting region 13a and the second light emitting region 23a emit light in different colors. According to this, it is possible to display the change in color due to the change in the overlapping state of the light emitted in the first light emitting region 13a and the light emitted in the second light emitting region 23a. Therefore, the pointer 100 can display a more novel change in light emission.

The second light emitting region 23a has a plurality of light emitting region portions 23a1 arranged in the stretching direction. According to this, it is possible to superimpose a plurality of light emission displays arranged in the stretching direction in the second light emission region 23a on the light emission display of the first light emission region 13a. As a result, the pointer 100 can display a more novel change in light emission.

The plurality of light emitting region portions 23a1 are formed so that the emission luminance becomes larger as the light emitting region portion 23a1 at the tip in the stretching direction becomes larger. According to this, the luminance of the emission display arranged in the stretching direction in the second emission region 23a increases toward the tip. Therefore, in the lined-up light emission display, the tip portion of the pointer 100 is visually recognized brighter, and the indicated position of the pointer 100 can be shown more clearly.

The plurality of light emitting region portions 23a1 are formed so that the length in the stretching direction increases toward the tip in the stretching direction. According to this, the length of the plurality of light emission displays arranged in the stretching direction in the second light emitting region 23a in the stretching direction increases toward the tip. Therefore, in the light emission display arranged discretely, the tip portion of the pointer 100 is visually recognized longer in the stretching direction, and the indicated position of the pointer 100 can be shown more clearly.

(Other embodiments)
The disclosure herein is not limited to the exemplary embodiments. Disclosures include exemplary embodiments and modifications by those skilled in the art based on them. For example, the disclosure is not limited to the parts and / or combinations of elements shown in the embodiments. Disclosure can be carried out in various combinations. The disclosure can have additional parts that can be added to the embodiment. Disclosures include those in which the parts and / or elements of the embodiment are omitted. Disclosures include the replacement or combination of parts and / or elements between one embodiment and another. The technical scope disclosed is not limited to the description of the embodiments. Some technical scopes disclosed are indicated by the description of the scope of claims and should be understood to include all modifications within the meaning and scope equivalent to the description of the scope of claims. ..

In the above-described embodiment, the first light emitting region 13a and the second light emitting region 23a are assumed to emit light in different colors by receiving the illumination light of different light sources 52 and 53 that emit illumination light of different colors. Instead of this, the emission colors of the first light emitting region 13a and the second light emitting region 23a may be different by providing a color changing unit for changing the color of the emitted illumination light. The color changing unit can be provided, for example, by providing a colored layer on each of the light guide units 10 and 20 and the display light guide body 40 and the like.

In addition to the above-described embodiment, the pointer 100 can display various light emission changes depending on the combination of the first light emitting region and the second light emitting region. For example, in the example shown in FIG. 11, the first light emitting region 13a and the second light emitting region 23a are overlapped near the center in the stretching direction, and the region where the second light emitting region 23a overlaps to the tip of the second indicator 23. It is formed from the region where the first light emitting region 13a overlaps to the root of the first indicating unit 13. According to this configuration, the white emission luminance and the red emission luminance have a ratio of about 1: 1 in the region where the two emission regions overlap, and the emission brightness ratio is in the region where only one of the emission regions exists. It can be 1: 0 or 0: 1. As a result, the pointer 100 can display a change in light emission in three colors: red on the root side, pink near the center, and white on the tip side.

In the above-described embodiment, the first light emitting region 13a and the second light emitting region 23a are supposed to emit light in different colors, but they may be configured to emit light in the same color. For example, in the guideline 100 of the first embodiment, if the shaft light source 52 and the display light source 53 have the same light source color, in the overlapping region of the first light emitting region 13a and the second light emitting region 23a, the two light emitting regions overlap each other. The brightness is higher than that in the region where only the second light source region 23a adjacent to the stretching direction exists. When viewed from the visual recognition side, on the root side of the indicating portions 13 and 23, light emission changes are visually recognized such that light is continuously emitted in the stretching direction and gradually changes to horizontal striped light emission toward the tip side. As described above, even when the first light emitting region 13a and the second light emitting region 23a have the same light source color, the pointer 100 can display a novel light emission change.

1 Display device, 100 pointer, 10 1st light source unit, 13a 1st light source area, 20 2nd light source unit, 23a 2nd light source area, 23a1 Multiple light source areas, 30a display surface, A overall area, 52 axes Part light source (first light source), 53 Display light source (second light source).

Claims (6)

A guideline for indicating the display surface (30a) in the display device.
The first light guide unit (10) that guides the first illumination light that has entered the inside, and
A first light emitting region (13a) provided in the first light guide unit and emitting light by reflecting the first illumination light toward the visual recognition side.
A second light guide unit (20) that is laminated and arranged on the visual recognition side of the first light guide unit and guides the second illumination light that has entered the inside, and the second light guide unit (20).
A second light emitting region (23a) provided in the second light guide unit and emitted by reflecting the second illumination light toward the viewing side, and a second light emitting region (23a).
Equipped with
The first light emitting region and the second light emitting region are formed so as to overlap at least a part in the stretching direction, and the first light emitting region and the second light emitting region are overlapped in the depth direction as a whole region (A). Consists of
In the whole region, a guideline in which the ratio of the emission luminance by the first illumination light and the emission luminance by the second illumination light differs depending on the position in the stretching direction. The guideline according to claim 1, wherein the first light emitting region and the second light emitting region emit light in different colors. The guideline according to claim 1 or 2, wherein at least one of the first light emitting region and the second light emitting region has a plurality of light emitting region portions (23a1) arranged in the stretching direction. Of the first light emitting region and the second light emitting region, one of the light emitting region portions including the plurality of light emitting region portions is
The guideline according to claim 3, wherein the emission luminance is formed so as to be closer to the emission region portion located at the tip in the stretching direction. The guideline according to claim 3 or 4, wherein the plurality of light emitting region portions are formed so that the length in the stretching direction increases toward the tip in the stretching direction. The guideline according to any one of claims 1 to 5,
The first light source (52) that emits the first illumination light and
The second light source (53) that emits the second illumination light and
Display device.

Images