JP6836434B2 - Display device - Google Patents

Description

The present invention relates to a display device.

As a conventional display device applied to a vehicle or the like, for example, Patent Document 1 discloses a display device for a vehicle having an irradiation unit. The irradiation unit irradiates the display light from an opening located so as to face the reflective member, projects the display light on the reflective member, and displays information to the occupant.

Japanese Unexamined Patent Publication No. 2016-028934

By the way, in the vehicle display device described in Patent Document 1 described above, the visibility may be deteriorated because, for example, the frame portion of the display device that irradiates the display light in the irradiation unit is reflected on the reflective member. ..

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a display device capable of ensuring proper visibility.

In order to achieve the above object, the display device according to the present invention has an emission unit that emits display light indicating information about the vehicle, a display unit that has a frame portion that surrounds the emission unit, and is emitted from the display unit. A reflection display member that reflects the display light to a predetermined visual position side, a mask portion that covers the reflection display member side of the frame portion, and an exposed opening that exposes the emission portion to the reflection display member side. It is characterized by including a mask member having a portion and a semitransparent member that covers the reflection display member side of the mask member and dims the light of a visible light region component.

Further, the display device includes a display structure provided on the side of the reflection display member opposite to the visual position side, and the reflection display member transmits light of a visible light region component from the display structure. At the same time, the image by the display light can be displayed at a position superimposing on the display structure when viewed from the visual position.

Further, in the display device, the translucent member may cover the entire area visible from the visual position via the reflection display member.

Further, in the display device, the display unit, the reflection display member, the mask member, and the translucent member are housed, and the visual side opening opened to the visual position side and the semitransparent member are accommodated. A housing having a fitting opening to be fitted may be provided, and the fitting opening may be located outside the area where the edge is visible from the visual position through the reflection display member.

Further, in the display device, the translucent member may be provided with an antireflection film for reducing surface reflection on the surface of the reflection display member side.

The display device according to the present invention reflects the display light emitted from the exit portion of the display unit toward the visual position side by the reflection display member. With this configuration, the display device displays the reflection display member with display light so that it can be visually recognized from the visual position. In this case, in the display device, the frame portion surrounding the exit portion of the display unit is covered with the mask portion of the mask member, so that the frame portion and the boundary line between the frame portion and the emission portion are reflected on the reflection display member. It can be prevented from getting in. On top of that, in the display device, the reflection display member side of the mask member is covered with a translucent member that dims the light of the visible light region component, so that the edge of the exposed opening that exposes the exit portion in the mask member. Can be suppressed from being reflected on the reflection display member. As a result, the display device has an effect that proper visibility can be ensured.

FIG. 1 is a schematic perspective view showing a schematic configuration of a display device according to an embodiment. FIG. 2 is a schematic partial cross-sectional view showing a schematic configuration of a display device according to an embodiment.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. The present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that can be easily replaced by those skilled in the art, or those that are substantially the same.

[Embodiment]
The display device 1 according to the present embodiment shown in FIGS. 1 and 2 is applied to a vehicle and constitutes an in-vehicle meter. The display device 1 is mounted in, for example, an instrument panel provided on the dashboard of a vehicle. The display device 1 displays various visible information about the vehicle as information used for driving the vehicle. Hereinafter, the configuration of the display device 1 will be described in detail with reference to each figure.

The depth direction X as the first direction of the display device 1 shown in FIG. 1 or the like typically corresponds to the front-rear direction of the vehicle to which the display device 1 is applied, more specifically, the overall length direction of the vehicle. To do. The front side of the display device 1 is the side facing the driver's seat of the vehicle in the depth direction X, and is typically the side visually recognized by the driver sitting in the driver's seat. On the other hand, the back side of the display device 1 is the side opposite to the front side in the depth direction X, and is typically the side housed inside the instrument panel. Further, the width direction Y as the second direction of the display device 1 typically corresponds to the vehicle width direction of the vehicle to which the display device 1 is applied, more specifically, the overall width direction of the vehicle. In the following description, in the width direction Y of the display device 1, the left side facing the front surface of the display device 1 may be referred to as the left side in the width direction Y, and the right side may be referred to as the right side in the width direction Y. The height direction Z as the third direction of the display device 1 typically corresponds to the height direction of the vehicle to which the display device 1 is applied, more specifically, the vehicle height direction of the vehicle. The height direction Z is a direction along the vertical direction when the vehicle is located on the horizontal plane. In the following description, in the height direction Z of the display device 1, the upper side in the vertical direction may be referred to as the upper side in the height direction Z, and the lower side in the vertical direction may be referred to as the lower side in the height direction Z. Unless otherwise specified, each direction used in the following description represents a direction in which each configuration of the display device 1 is assembled to each other and the display device 1 is assembled to the instrument panel.

The display device 1 includes a housing 2, a display structure 3, a display unit 4, a reflection display member 5, a mask member 6, and a translucent member 7. Each part of the display device 1 is housed in the housing 2. Then, the display device 1 emits display light from the display unit 4 toward the reflection display member 5 via the mask member 6 and the translucent member 7, and operates by the image 5A by the display light reflected by the reflection display member 5. It presents various visual information to a person or the like. At this time, the display device 1 superimposes and displays the image 5A by the display light on the display structure 3 in, for example, the reflection display member 5.

Specifically, the housing 2 accommodates each part of the display device 1, and is fitted with a visual side opening 25 opened on the EP side at a predetermined visual position (eye point) and a translucent member 7. It has a fitting opening 26. The housing 2 is formed of, for example, an insulating synthetic resin. The housing 2 is formed in a hollow box shape by combining a plurality of members such as a housing body, a back cover, a back cover, and a top hood. The housing 2 accommodates the display structure 3, the display unit 4, the reflection display member 5, the mask member 6, the translucent member 7, and the like in the internal accommodation space portion 21. In addition to this, the housing 2 also houses various parts for controlling and driving each part of the display device 1, such as a control circuit and a drive circuit, in the storage space portion 21. Here, the accommodation space portion 21 includes a first space portion 23 and a second space portion 24 that are mutually partitioned by the facing wall portion 22. The facing wall portion 22 extends along the depth direction X, and divides the accommodation space portion 21 into the first space portion 23 and the second space portion 24 with respect to the height direction Z. The first space portion 23 is located below the height direction Z with the facing wall portion 22 as a boundary, and the second space portion 24 is located above the height direction Z with the facing wall portion 22 as a boundary. Both the first space portion 23 and the second space portion 24 are closed on the back side in the depth direction X. The second space portion 24 is also closed on the front side in the depth direction X. On the other hand, the first space portion 23 opens toward the front side in the depth direction X through the visual side opening 25 formed in the housing 2. In other words, the visual side opening 25 communicates with the inside and outside of the housing 2 on the front side in the depth direction X, and the first space portion 23 is located on the back side of the visual side opening 25 in the depth direction X. .. The first space portion 23 accommodates the display structure 3 and the reflection display member 5 on the front side in the depth direction X, here, at a position directly visible from the visual position EP via the visual side opening 25. On the other hand, the second space portion 24 accommodates the display portion 4 at a position that cannot be directly seen from the visual position EP. In the housing 2, a fitting opening 26 is formed in the facing wall portion 22 interposed between the first space portion 23 and the second space portion 24, and the mask member 6 is formed in the fitting opening 26. , The translucent member 7 is assembled. The fitting opening 26 penetrates the facing wall portion 22 and communicates the first space portion 23 and the second space portion 24.

Here, the above-mentioned visual position EP is typically presumed to be located within the so-called eye range of the vehicle. Here, the eye range is a "driver's eye range of an automobile" and corresponds to an area in which a driver's viewpoint determined in advance according to the vehicle is located. The eye range is typically a statistical representation of the distribution of the driver's eye position in the vehicle, eg, a predetermined percentage (eg, 95%) with the driver sitting in the driver's seat. It corresponds to the area including the position of the driver's eyes.

The display structure 3 is housed in the first space 23 of the housing 2 together with the reflection display member 5. The display structure 3 is supported in the first space portion 23 at a position that can be directly seen from the visual position EP via the visual side opening 25 via various support structures. Here, the display structure 3 is provided in the first space portion 23 on the side opposite to the visual position EP side of the reflection display member 5, which will be described later, that is, on the back side of the reflection display member 5 in the depth direction X. The display structure 3 is a structure with an entity. The display structure 3 is, for example, a decoration member for applying various decorations, an analog instrument that indicates various measurement values by a pointer, an image display that displays various information about the vehicle as a real image, and the like. Here, the display structure 3 will be described as an example of a decorative ring formed in a substantially annular shape, but the present invention is not limited to this. Further, here, the display device 1 includes a decorative light source 31 for illuminating the display structure 3 in the first space portion 23. The decorative light source 31 is provided, for example, in the first space portion 23, above the display structure 3 in the height direction Z. The decorative light source 31 is composed of, for example, an LED (Light Emitting Diode) element or the like, but is not limited thereto. When the display structure 3 is visually recognized as a decorative body, the display device 1 irradiates light from the decorative light source 31 toward the display structure 3, so that the display structure 3 is caused by the decorative light source 31. Can illuminate.

The display unit 4 can emit display light indicating information about the vehicle. The display unit 4 can use, for example, a thin liquid crystal display, a plasma display, an organic EL display, or the like as a device that emits display light. More specifically, the display unit 4 has an exit unit 41 and a frame unit 42. The emission unit 41 is a main portion that constitutes the display unit 4, and is a portion that emits display light toward the reflection display member 5, which will be described later. The display light emitted by the emitting unit 41 is display light representing the image 5A to be displayed on the reflection display member 5, and includes at least light of a visible light region component. Here, the light of the visible light region component is the light of the wavelength component in the visible light region that can be visually recognized by humans, and is, for example, the light of the component having a wavelength in the range of 360 to 830 nm. The emission surface (emission area) 41a from which the emission unit 41 emits the display light is formed, for example, in a substantially rectangular shape. The frame portion 42 is a frame-shaped portion that surrounds the exit portion 41. The frame portion 42 is formed in a substantially rectangular frame shape so as to surround the exit portion 41 having the substantially rectangular exit surface 41a from four sides. Here, the frame portion 42 is configured to include a back plate that covers a surface of the exit portion 41 opposite to the exit surface 41a side. In the display unit 4, the entire exit unit 41 and the frame unit 42 are housed in the second space unit 24. The display unit 4 is supported in the second space unit 24 at a position that cannot be directly seen from the visual position EP via various support structures. The display unit 4 is supported in the second space portion 24 in a positional relationship in which the exit surface 41a of the emission portion 41 faces the fitting opening 26 of the facing wall portion 22 and faces the first space portion 23 side. The display unit 4 displays from the exit surface 41a of the emission unit 41 located on the second space 24 side toward the reflection display member 5 located on the first space 23 side via the fitting opening 26. Emit light. In other words, the fitting opening 26 leads the display light emitted by the exit surface 41a of the exit portion 41 located on the second space portion 24 side to the first space portion 23 side where the reflection display member 5 is located. Consists of the optical path opening of.

The reflection display member 5 reflects the display light emitted from the display unit 4 toward the predetermined visual position EP side. The reflection display member 5 displays various visible information by the display light emitted from the display unit 4. The reflection display member 5 is housed in the first space portion 23 of the housing 2 together with the display structure 3 described above. The reflection display member 5 is supported in the first space portion 23 at a position directly visible from the visual position EP via the visual side opening 25 via various support structures. Here, the reflection display member 5 is provided in the first space portion 23 on the visual position EP side of the display structure 3 described above, that is, on the front side of the display structure 3 in the depth direction X. The reflection display member 5 is provided so as to cover the entire front side of the display structure 3 in the depth direction X. Here, the reflection display member 5 is formed in a substantially plate shape, and is provided so as to be inclined so as to face the display unit 4 side. That is, the reflection display member 5 is provided so as to be inclined toward the front side in the depth direction X from the upper side to the lower side in the height direction Z. Then, the reflection display member 5 uses the first space portion 23 as a space portion on the front side (space portion on the visual position EP side) and a space portion on the back side (space portion on the display structure 3 side) in the depth direction X. It is divided into.

The reflection display member 5 of the present embodiment is a semi-transmissive member, that is, a so-called half, which reflects a part of the light of the incident visible light region component and transmits another part of the light of the incident visible light region component. It's a mirror. The reflection display member 5 has a main body portion made of transparent synthetic resin, glass, or the like, and a half mirror layer. The half mirror layer is a metal or inorganic multilayer thin film formed on the surface of the main body by vapor deposition or the like. The reflection display member 5 transmits the light of the visible light region component from the display structure 3 so that the display structure 3 can be visually recognized at the visual position EP. Then, the reflection display member 5 displays the image 5A as a virtual image by reflecting the display light emitted from the display unit 4 toward the visual position EP side. The image 5A is a reflected image by the display light reflected by the reflection display member 5 toward the visual position EP, and is a so-called virtual image that can be visually recognized from the visual position EP. Here, the reflection display member 5 displays the image 5A by the display light at a position where it overlaps with the display structure 3 when viewed from the visual position EP. That is, the reflection display member 5 is arranged so that the image 5A due to the display light is formed at a position substantially overlapping with the display structure 3. Image 5A represents various visible information about the vehicle. The image 5A illustrated in FIG. 1 includes, for example, an image of a pointer that rotates about an axis of rotation and an image of an index portion such as a scale pointed to by the guideline, and is composed of the display structure 3. It is an image which constitutes an instrument which points to various measurement values together with a decoration ring. In addition to this, the image 5A by the display light includes vehicle speed, integrated mileage, cooling water temperature, output rotation speed of driving power source, remaining fuel amount, battery storage amount, navigation information, map information, intersection information, and various types. It may include images such as various symbols, symbols, and character strings according to vehicle information such as warning lights (warning lamps, so-called tell tails), shift position indicators, and direction indicator symbols.

The mask member 6 covers a part of the display unit 4 from the emission direction side of the display light by the display unit 4, that is, from the reflection display member 5 side. The mask member 6 is interposed between the display unit 4 and the reflection display member 5. The mask member 6 is formed by, for example, applying a matte black coating to an insulating synthetic resin formed in a substantially plate shape. Specifically, the mask member 6 has a mask portion 61 and an exposed opening 62. The mask portion 61 is a portion that covers the reflection display member 5 side of the frame portion 42 of the display unit 4. The mask portion 61 is formed in a substantially rectangular frame shape so as to cover at least the entire frame portion 42 from the reflection display member 5 side. The mask portion 61 may be configured to cover a part of the exit portion 41 of the display portion 4 (for example, a portion in the vicinity of the frame portion 42) from the reflection display member 5 side. On the other hand, the exposed opening 62 is a portion that exposes the emitting portion 41 of the display unit 4 to the reflection display member 5 side. The exposed opening 62 is formed as a through hole penetrating the mask member 6. The exposed opening 62 is formed in a substantially rectangular shape so as to expose at least a part of the exit surface 41a of the exit portion 41, here most of which, to the reflection display member 5 side. In the mask member 6, the mask portion 61 covers the frame portion 42 from the reflection display member 5 side, and the exposed opening 62 exposes the emission surface 41a of the emission portion 41 from the reflection display member 5 side. It is assembled to. The mask member 6 is assembled so as to be fitted into the fitting opening 26 formed in the facing wall portion 22, for example. The exposed opening 62, together with the fitting opening 26, transmits the display light emitted by the exit surface 41a of the exit portion 41 located on the second space portion 24 side to the first space portion 23 side where the reflection display member 5 is located. It constitutes an optical path opening for derivation.

The translucent member 7 covers the reflection display member 5 side of the mask member 6 and dims the light of the visible light region component. The translucent member 7 is interposed between the mask member 6 and the reflection display member 5. The translucent member 7 is formed of a member that has light transmittance for transmitting the light of the visible light region component and dims the light of the visible light region component when transmitted. The translucent member 7 is made of, for example, so-called smoked glass, but is not limited to this, and may be formed by providing a smoke film on the transparent glass. The translucent member 7 transmits light at a predetermined transmittance. That is, the translucent member 7 reduces the amount of emitted light with respect to the amount of incident light and suppresses the brightness. For the translucent member 7, it is preferable to use the color of the component of the visible light region component that is desired to be dimmed more, and here, as an example, a dark-colored smoked glass having the same color as the mask member 6. Further, the translucent member 7 of the present embodiment is provided with an antireflection film (Anti-reflective coating) 7a on the surface on the reflection display member 5 side to reduce surface reflection. The translucent member 7 is assembled to the facing wall portion 22 in a positional relationship that covers the entire surface of the mask member 6 from the reflection display member 5 side. The translucent member 7 is assembled so as to be fitted in the fitting opening 26 formed in the facing wall portion 22, for example, so as to be superimposed on the mask member 6 on the reflection display member 5 side.

The translucent member 7 of the present embodiment is provided at a size and position that covers at least the entire visible region T1 from the visual position EP via the reflection display member 5. That is, in this display device 1, the entire region T1 that can be visually recognized from the visual position EP via the reflection display member 5 is covered with the translucent member 7. As a result, in the display device 1, the translucent member 7 is reflected in the entire visible region T2 from the visual position EP through the visual side opening 25 in the reflection display member 5. Here, the fitting opening 26 into which the translucent member 7 is fitted is formed so that the edge is located outside the visible region T1 from the visual position EP via the reflection display member 5. In other words, in the fitting opening 26, an image of the edge of the fitting opening 26 that is reflected by the reflection display member 5 toward the visual position EP is reflected from the visual position EP on the reflection display member 5 via the visual position EP. It is formed so as to be located outside the visible region T2.

In the display device 1 configured as described above, the display light emitted from the emission surface 41a of the emission unit 41 of the display unit 4 is the fitting opening 26 of the housing 2, the exposed opening 62 of the mask member 6, and the half. It reaches the reflection display member 5 via the transparent member 7. Then, in the display device 1, the display light is reflected by the reflection display member 5 toward the visual position EP side. With this configuration, the display device 1 displays the image 5A by the display light on the reflection display member 5. In this case, the display device 1 superimposes the image 5A of the display light reflected by the reflection display member 5 on the display structure 3 and displays it, and presents various visual information to the driver and the like.

The display device 1 described above reflects the display light emitted from the emission unit 41 of the display unit 4 to the visual position EP side by the reflection display member 5. With this configuration, the display device 1 displays the reflection display member 5 with display light so that it can be visually recognized from the visual position EP. In this case, in the display device 1, the frame portion 42 surrounding the exit portion 41 of the display unit 4 is covered with the mask portion 61 of the mask member 6, so that the frame portion 42, the frame portion 42, and the exit portion 41 are combined with each other. It is possible to prevent the boundary line of the above from being reflected on the reflection display member 5. Further, in the display device 1, the reflection display member 5 side of the mask member 6 is covered with the translucent member 7, so that the edge of the exposed opening 62 (so-called parting off) that exposes the exit portion 41 in the mask member 6 is exposed. It is possible to prevent the line) from being reflected on the reflection display member 5. As a result, the display device 1 can make it difficult to feel annoyance when visually recognizing the display by the display light reflected on the reflection display member 5, and can ensure proper visibility.

Here, in the display device 1 described above, the image 5A by the display light is displayed on the reflection display member 5 at a position where the reflection display member 5 is superposed on the display structure 3 when viewed from the visual position EP. With this configuration, the display device 1 can perform a wider variety of displays by combining the display structure 3 and the image 5A. On top of that, the display device 1 has the frame portion 42 and the exposed opening 62 as described above even if the decorative light source 31 is turned off and the display structure 3 is not illuminated. Since the reflection of the edge on the reflection display member 5 can be suppressed, proper visibility can be ensured.

Further, in the display device 1 described above, the translucent member 7 covers the entire region T1 that can be visually recognized from the visual position EP via the reflection display member 5. With this configuration, the display device 1 can prevent the edge (so-called parting line) of the translucent member 7 from being reflected in the region T2 of the reflection display member 5, so that appropriate visibility is ensured in this respect as well. can do.

Further, in the display device 1 described above, the edge of the fitting opening 26 into which the translucent member 7 is fitted is located outside the region T1 that can be visually recognized from the visual position EP via the reflection display member 5. With this configuration, the display device 1 can prevent the edge (so-called parting line) of the fitting opening 26 from being reflected on the reflection display member 5, so that appropriate visibility can be ensured in this respect as well. Can be done.

Further, in the display device 1 described above, the antireflection film 7a is applied to the surface of the translucent member 7 on the reflection display member 5 side. With this configuration, the display device 1 can suppress the reflection of the driver's face and surrounding objects on the translucent member 7 via the reflection display member 5, so that it is difficult to feel annoyance. In this respect as well, proper visibility can be ensured.

The display device according to the embodiment of the present invention described above is not limited to the embodiment described above, and various modifications can be made within the scope described in the claims.

In the above description, in the display device 1, the translucent member 7 is fitted into the fitting opening 26, and the edge of the fitting opening 26 is visible from the visual position EP via the reflection display member 5 outside the region T1. Although it was explained as being located in, it is not limited to this. For example, in the display device 1, the edge of the fitting opening 26 may be located inside the region T1. The display device 1 may be provided so as to extend beyond the fitting opening 26 and cover the entire region T1 instead of the semi-transparent member 7 being fitted into the fitting opening 26. In this case, although the edge of the fitting opening 26 is located inside the region T1, the display device 1 has the edge because the edge of the fitting opening 26 is covered with the translucent member 7. Can be suppressed from being reflected in the region T2 of the reflection display member 5. In this case, the display device 1 may be provided with the translucent member 7 fitted in the fitting opening 26. Even in this case, in the display device 1, at least the reflection display member 5 side of the mask member 6 is covered with the translucent member 7, so that the edge of the exposed opening 62 becomes the reflection display member 5. It is possible to suppress reflection.

In the above description, the translucent member 7 has been described as having the antireflection film 7a applied to the surface on the reflection display member 5 side, but the present invention is not limited to this.

In the above description, the reflection display member 5 transmits the light of the visible light region component from the display structure 3 and displays the image 5A by the display light at a position where the light is superimposed on the display structure 3 when viewed from the visual position EP. Although it was explained as a half mirror, it is not limited to this. The reflection display member 5 may be formed of, for example, a windshield (so-called windshield) of a vehicle, or may be formed of a combiner formed separately from the windshield. That is, the display device may constitute a so-called head-up display (HUD: Head Up Display). In this case, the display device 1 may be configured not to include the display structure 3.

1 Display device 2 Housing 3 Display structure 4 Display unit 5 Reflective display member 5A Image 6 Mask member 7 Semi-transparent member 7a Anti-reflection film 25 Visual side opening 26 Fitting opening 41 Exit 42 Frame 61 Mask 62 Exposed opening EP Visual position T1, T2 area

Claims (5)

An emission unit that emits display light that represents information about the vehicle, and a display unit that has a frame portion that surrounds the emission unit.
A reflection display member that reflects the display light emitted from the display unit toward a predetermined visual position side, and
A mask member having a mask portion covering the reflection display member side of the frame portion and an exposed opening for exposing the emission portion to the reflection display member side.
A semi-transparent member that covers the reflection display member side of the mask member and dims the light of the visible light region component is provided.
Display device. A display structure provided on the side of the reflection display member opposite to the visual position side is provided.
The reflection display member transmits light of a visible light region component from the display structure and displays an image of the display light at a position where the light is superimposed on the display structure when viewed from the visual position.
The display device according to claim 1. The translucent member covers the entire area visible from the visual position via the reflection display member.
The display device according to claim 1 or 2. The display unit, the reflection display member, the mask member, and the semi-transparent member are housed, and the visual side opening opened to the visual position side and the fitting opening into which the translucent member is fitted. Equipped with a housing to have
The fitting opening is located outside the area where the edge is visible from the visual position through the reflective display member.
The display device according to any one of claims 1 to 3. The translucent member is provided with an antireflection film on the surface on the reflection display member side to reduce surface reflection.
The display device according to any one of claims 1 to 4.

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