JP2015143812A - Electro-optic device and electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress temperature elevation of an image forming apparatus by heat generating in pixels or drive circuits.SOLUTION: An image forming apparatus 10 wearable on a human body is provided. The image forming apparatus 10 includes: an image display device 11 having a pixel P and a drive circuit (a data line drive circuit 35 and a scanning line drive circuit 36) driving the pixel P; and an exterior case 13 that stores the image display device 11 and has a wall 13-1 that comes into contact with a human body. The exterior case 13 includes the wall 13-1, a wall 13-2, and a wall 13-3, sequentially arranged in an X direction from a contact surface 13-1A toward the image display device 11; and the wall 13-1 has the contact surface 13-1A. The image display device 11 is disposed between the wall 13-2 and the wall 13-3.

Description

  The present invention relates to an electro-optical device and an electronic apparatus equipped with the electro-optical device.

  A head mounted display (HMD) that is mounted on the head of a human body and observes an image is excellent in convenience that it is small and light and can be carried. For example, a stereoscopic display is provided by images corresponding to the left eye and the right eye, respectively. Can be provided. For example, Patent Document 1 proposes an HMD having a see-through function for displaying image light in an overlapping manner without disturbing an external image (external image).

The HMD described in Patent Literature 1 includes a video display device and a projection fluoroscopic device, and the video display device is disposed so as to be in contact with the wearer's temporal region.
The video display device includes a self-luminous organic electroluminescence (hereinafter referred to as organic EL) display device. The organic EL display device includes an organic EL element as a light emitting element, a drive circuit for driving the organic EL element, and the like. The organic EL element has an anode, a cathode, a light emitting functional layer sandwiched between these electrodes, and the like, and when a current is passed between the anode and the cathode, the light emitting functional layer emits light.
With this configuration, the video display apparatus outputs image light to be displayed such as a moving image to the projection fluoroscopic apparatus side.
The projection see-through device includes a light guide member, a prism, and the like, and guides image light emitted from the video display device and light of the external image to the wearer.

JP 2013-200554 A

  However, the organic EL element generates heat due to a current flowing between the anode and the cathode. Since the drive circuit controls the whole of the current flowing through the plurality of organic EL elements, a larger current flows and generates larger heat than the single organic EL element. That is, the HMD described in Patent Document 1 has a problem that when the image light to be displayed such as a moving image is output, the organic EL element and the drive circuit generate heat and the temperature of the video display device rises. ing. In addition, as the temperature rises, there is a problem that the wearing feeling (comfort) at the time of use may be impaired.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 An electro-optical device according to this application example is an electro-optical device that can be attached to a human body, and includes a display unit having a pixel and a drive circuit for driving the pixel, and the display unit and the human body. And an exterior case having a contact surface in contact with the display portion, wherein the contact surface is disposed with at least one space from the display portion.

The electro-optical device according to this application example includes a display unit that outputs image light, an exterior case that houses the display unit, and the like. When a current is supplied to the pixel or the drive circuit and image light is output, the pixel or the drive circuit generates heat due to the current, and the temperature of the display unit increases. The contact surface (contact surface) that contacts the human body is disposed with at least one space from the display unit. The space is a region filled with gas, and is a region excellent in heat insulation that hardly propagates heat compared to a solid or liquid. That is, a region (space) excellent in heat insulation is disposed between the contact surface and the display unit.
Accordingly, heat generated by the pixels and the drive circuit of the display unit is not easily transmitted to the contact surface side, and the temperature of the contact surface is not easily increased. This makes it possible to suppress discomfort due to a rise in temperature when the head is worn and used, and to ensure comfort without impairing the feeling of wearing.

  Application Example 2 In the electro-optical device according to the application example described above, it is preferable that the space is filled with either atmospheric pressure air or decompressed air.

  By filling the space arranged between the contact surface and the display unit with atmospheric air or decompressed air, for example, compared with the case where liquid or solid is filled, the space is reduced in weight. And the heat insulation of the said space can be improved.

  Application Example 3 In the electro-optical device according to the application example described above, it is preferable that the contact surface is arranged with two spaces from the display unit.

By disposing two spaces (regions having excellent heat insulation properties) between the contact surface and the display unit, the heat insulation properties can be further enhanced as compared with, for example, the case of arranging one space.
Note that more space can be arranged between the contact surface and the display unit. However, if more space is arranged between the contact surface and the display unit, the dimension between the contact surface and the display unit increases, and it is difficult to reduce the thickness of the display unit (electro-optical device).
That is, it is preferable to arrange two spaces between the contact surface and the display unit in order to reduce the thickness of the display unit and improve the heat insulation of the display unit.

  Application Example 4 The electro-optical device according to this application example is an electro-optical device that can be attached to a human body, and the electro-optical device includes a display unit including a pixel and a drive circuit that drives the pixel; An exterior case that houses a display unit and has a contact surface that contacts a human body, and the exterior case is disposed in order in a first direction from the contact surface that contacts the human body toward the display unit. 1 wall, a second wall, and a third wall, the first wall has a contact surface that contacts the human body, and the display unit includes the second wall It arrange | positions between the said 3rd walls, It is characterized by the above-mentioned.

  A first wall, a second wall, and a third wall are sequentially arranged in a first direction from the contact surface toward the display unit, and the first wall has a contact surface (contact surface) that contacts the human body. doing. Furthermore, the display part is arrange | positioned between the 2nd wall and the 3rd wall. Therefore, a first space formed between the first wall and the second wall is disposed between the contact surface and the display unit. Furthermore, when the display unit is arranged away from the second wall, a second space is arranged (formed) between the display unit and the second wall. Therefore, the electro-optical device according to this application example has at least one space between the contact surface and the display unit, that is, at least one region having excellent heat insulation.

  Therefore, heat generated by the pixels and the drive circuit of the display unit is not easily transmitted to the contact surface, and the temperature of the contact surface is not easily increased.

  Application Example 5 In the electro-optical device according to the application example described above, a space between the first wall and the second wall and a space between the second wall and the third wall. Is preferably filled with either atmospheric pressure air or decompressed air.

  By filling the space between the first wall and the second wall with atmospheric air or decompressed air, the space can be reduced in weight compared to, for example, filling with liquid or solid. And the heat insulation of the said space can be improved. Similarly, by filling the space between the second wall and the third wall with atmospheric pressure air or decompressed air, the space is lighter than when filling with liquid or solid, for example. And heat insulation of the space can be improved.

  Application Example 6 In the electro-optical device according to the application example described above, the exterior case includes the second wall and the third wall arranged in order from the first wall in the first direction. And a fourth wall, and the space between the third wall and the fourth wall is preferably filled with either atmospheric pressure air or decompressed air. .

  The first wall and the fourth wall are disposed on the surface side of the exterior case, and the second wall and the third wall are disposed inside the exterior case. For example, when the user grips the first wall or the fourth wall and attaches / detaches the electro-optical device, the user grips the fourth wall when the temperature of the fourth wall is high. There is a risk of feeling uncomfortable.

  A space is formed by the third wall and the fourth wall between the display unit and the fourth wall, and the space is filled with air. That is, a region having excellent heat insulation is disposed between the display unit and the fourth wall. Therefore, heat generated by the pixels and the driver circuit of the display portion is not easily transmitted to the fourth wall side, and the temperature of the fourth wall is not easily increased. Therefore, it is possible to suppress a sense of incongruity due to an increase in the temperature of the fourth wall.

  Application Example 7 In the electro-optical device according to the application example, it is preferable that the exterior case has a fifth wall, and the display unit is fixed to the fifth wall.

  The display part is being fixed to the 5th wall different from the 1st wall which has a contact surface. Therefore, the heat generated by the pixels and the drive circuit of the display unit is transmitted to the fifth wall side and is radiated by using the fifth wall as a heat radiating unit.

  Application Example 8 In the electro-optical device according to the application example described above, at least one of the thermal conductivity of the first wall and the thermal conductivity of the second wall is greater than the thermal conductivity of the fifth wall. Is preferably small.

At least one of the first wall and the second wall is made of a material that is less likely to transfer heat than the fifth wall. By disposing a wall made of a material that is difficult to transfer heat between the user and the display unit, it is possible to suppress the influence of heat generated by the pixels and the drive circuit.
The fifth wall is made of a material that conducts heat more easily than at least one of the first wall and the second wall. Therefore, heat generated by the pixels and the drive circuit of the display portion can be quickly and efficiently propagated to the fifth wall side, and can be quickly and efficiently radiated by the fifth wall.

  Application Example 9 In the electro-optical device according to the application example described above, it is preferable that an organic electroluminescence element is formed in the pixel.

  Since the organic electroluminescence element is a self-luminous display element, it does not require a backlight as a light source, and is excellent in thickness reduction (compactness) and weight reduction compared to a non-luminous display element such as a liquid crystal element. . Therefore, by forming an organic electroluminescence element in the display portion, the display portion can be made thinner and lighter than when a liquid crystal element is formed in the display portion.

  Application Example 10 An electronic apparatus according to this application example includes the electro-optical device described in the application example.

  Application Example 11 An electro-optical device according to this application example is an electro-optical device that can be mounted on a human body, and includes a display unit having a pixel and a drive circuit for driving the pixel, and the display unit and the human body. And an exterior case having a wall located on the side, wherein the wall is disposed with at least one space from the display unit.

  In the electro-optical device described in the application example, the temperature rise of the contact surface is suppressed. Therefore, when the electro-optical device is applied to the electronic apparatus according to this application example, the temperature increase of the electronic apparatus can be suppressed. For example, an excellent electronic device can be provided by applying the electro-optical device to a display unit of an electronic device that can be attached to and detached from a human body, such as a head-mounted display, a wearable computer, a wearable phone, or a wearable watch.

1 is a schematic diagram illustrating a configuration of a virtual image display device according to Embodiment 1. FIG. The schematic sectional drawing which shows the structure of a 1st display apparatus. FIG. 2A is a schematic cross-sectional view illustrating a configuration of a first image forming apparatus, and FIG. 3B is a schematic plan view of the first image forming apparatus. FIG. 4 is a schematic cross-sectional view of the image display device in a region B surrounded by a broken line in FIG. 1 is a schematic plan view of an image display device on a side where an organic EL display device is mounted. FIG. 3 is an equivalent circuit diagram illustrating an electrical configuration of the organic EL display device. FIG. 3A is a schematic diagram illustrating a configuration of an image forming apparatus according to a second embodiment, and FIG. Schematic which shows the structure of the smart watch which concerns on Embodiment 3. FIG. FIG. 9 is a schematic cross-sectional view of the display unit taken along line A-A ′ of FIG. 8. FIG. 10 is a schematic cross-sectional view of an image forming apparatus according to modification example 3.

  Embodiments of the present invention will be described below with reference to the drawings. Such an embodiment shows one aspect of the present invention and does not limit the present invention, and can be arbitrarily changed within the scope of the technical idea of the present invention. In each of the following drawings, the scale of each layer or each part is made different from the actual scale so that each layer or each part can be recognized on the drawing.

(Embodiment 1)
"Outline of virtual image display device"
The virtual image display apparatus 100 according to the first embodiment is an example of the “electronic device” in the present invention, and is a head mounted display (HMD) that has an appearance like glasses and is worn on the head of a human body. The wearer M wearing the virtual image display device 100 can recognize image light due to the virtual image by the virtual image display device 100. Furthermore, the virtual image display device 100 has a see-through function. Therefore, the wearer M can observe the virtual image by the virtual image display device 100 and the external image at the same time.

  FIG. 1 is a schematic diagram illustrating a configuration of a virtual image display device according to the present embodiment. First, an outline of the virtual image display device 100 will be described with reference to FIG.

As shown in FIG. 1, the virtual image display device 100 includes an optical panel 110 that covers the front of the wearer M, a frame 121 that supports the optical panel 110, and the like. A first image forming apparatus 10 and a second image forming apparatus 9 are provided.
The first image forming apparatus 10 and the second image forming apparatus 9 are examples of the “electro-optical device” in the present invention.

  The optical panel 110 has a first panel portion 111 and a second panel portion 112, and both the panel portions 111 and 112 are plate-like parts integrally connected at the center. The first display device 100A that combines the left first panel portion 111 and the first image forming apparatus 10 in the drawing is a portion that forms a virtual image for the left eye, and functions alone as a virtual image display device. Further, the second display device 100B in which the second panel portion 112 on the right side in the drawing and the second image forming device 9 are combined is a portion that forms a virtual image for the right eye, and functions alone as a virtual image display device. To do.

  The frame 121 is a housing of the virtual image display device 100. The frame 121 has a portion that contacts the human body, such as a portion that contacts the ear of the wearer M, a portion that contacts the frontal portion of the wearer M, and a portion that contacts the nose of the wearer M.

The first image forming apparatus 10 is mounted on a frame 121 and is used by being attached to and detached from the head integrally with the frame 121. The first image forming apparatus 10 has a wall 13-1 on the side of the head of the wearer M, and the surface on the wearer M side of the wall 13-1 is a surface that contacts the human body (hereinafter referred to as a contact surface). 13-1A). Further, the first image forming apparatus 10 includes a wall 13-5 disposed so as to intersect the wall 13-1, and an image display apparatus 11 (see FIG. 2) described later is fixed to the wall 13-5. ing. Further, the wall 13-1 and the wall 13-5 form a part of an exterior case 13 (see FIG. 2) described later.
The wall 13-1 is an example of the “first wall” in the present invention. The wall 13-5 is an example of the “fifth wall” in the present invention.

The second display device 100B has the same structure (configuration) as the first display device 100A, and the second image forming device 9 has the same structure (configuration) as the first image forming device 10. They are just flipped left and right respectively. Therefore, the description of the second display device 100B and the second image forming device 9 will be omitted, and the feature points of the present invention will be described using the first display device 100A and the first image forming device 10.
In the following description, the first image forming apparatus 10 is referred to as the image forming apparatus 10.

"Overview of display device"
FIG. 2 is a schematic cross-sectional view showing the configuration of the first display device. In the drawing, the image light GL and the external light OL emitted from the image display device 11 are indicated by dashed-dotted arrows.
Next, an overview of the first display device 100A will be described with reference to FIG.

  As shown in FIG. 2, the first display device 100 </ b> A includes an image forming device 10 and a light guide device 20.

  The optical system of the first display device 100A has a first optical axis AX1, a second optical axis AX2, and a third optical axis AX3. In FIG. 2, the first optical axis AX1 and the third optical axis AX3 are parallel, and the second optical axis AX2 is orthogonal to the first optical axis AX1 and the third optical axis AX3.

  The first optical axis AX1 and the third optical axis AX3 may not be parallel, and the second optical axis AX2 may not be orthogonal to the first optical axis AX1 and the third optical axis AX3. What is necessary is just to arrange | position so that the light from the image display apparatus 11 may reach the wearer's eyes EY when the wearer wears the virtual image display apparatus 100.

The image forming apparatus 10 includes an image display device 11, a projection optical system 12, and an exterior case 13. The image display device 11 outputs (emits) the image light GL toward the projection optical system 12 side. The projection optical system 12 is a collimating lens that converts the image light GL output from the image display device 11 into a light beam in a parallel state. The outer case 13 is a housing that houses the image display device 11 and the projection optical system 12.
The image display device 11 is an example of the “display unit” in the present invention.

  The light guide device 20 is obtained by joining a light guide member 21 and a light transmission member 23, and is a flat optical member that extends in parallel as a whole. The light guide member 21 and the light transmitting member 23 are formed of a resin material that exhibits high light transmittance in the visible range.

  The light guide member 21 is a trapezoidal prism in plan view, and includes, as side surfaces, a first reflecting surface 21a, a second reflecting surface 21b, a third reflecting surface 21c, and a fourth reflecting surface 21d. The 1st reflective surface 21a, the 2nd reflective surface 21b, and the 3rd reflective surface 21c are total reflection surfaces using a refractive index difference. The fourth reflecting surface 21d includes a half mirror layer 28 having light transmissivity and light reflectivity. The half mirror layer 28 is formed, for example, by forming a metal reflection film or a dielectric multilayer film made of silver or the like.

  The first reflecting surface 21a and the second reflecting surface 21b face each other, correspond to the long side portion of the trapezoidal prism, and are long in the direction of the second optical axis AX2. The third reflecting surface 21c and the fourth reflecting surface 21d correspond to the slopes (short sides) of the trapezoidal prism, and both are inclined at an acute angle of 45 ° or less with respect to the second optical axis AX2.

  The image light GL emitted from the image display device 11 enters the light guide device 20, is reflected by the third reflecting surface 21c in the direction of the second optical axis AX2, and travels toward the fourth reflecting surface 21d.

  That is, the image light GL emitted from the image display device 11 passes through the light guide device 20 and the light guide member 21, is reflected by the fourth reflecting surface 21d, and enters the wearer's eye EY. Further, the external light OL passes through the light transmission member 23, the fourth reflection surface 21d, and the light guide member 21, and enters the eye EY of the wearer. As a result, the wearer can recognize the virtual image and the external image by superimposing them.

In the following description, the direction parallel to the second optical axis AX2 and directed from the fourth reflecting surface 21d to the third reflecting surface 21c is defined as the X direction. A direction parallel to the first optical axis AX1 and the third optical axis AX3 and directed from the third reflecting surface 21c to the image display device 11 is defined as a Z direction. Further, a direction orthogonal to the X direction and the Z direction is defined as a Y direction.
The X direction is an example of the “first direction” in the present invention.

"Outline of image forming device"
FIG. 3A is a diagram illustrating the first image forming apparatus extracted from FIG. 2, and is a schematic cross-sectional view illustrating the configuration of the first image forming apparatus. FIG. 3B is a schematic plan view seen from the direction intersecting FIG. 3A, that is, a schematic plan view of the first image forming apparatus seen from the Z direction. In FIG. 3A and FIG. 3B, components necessary for the description are illustrated, and components unnecessary for the description are not illustrated.
The outline of the image forming apparatus 10 will be described below with reference to FIGS. 3 (a) and 3 (b).

As described above, the image forming apparatus 10 includes the image display device 11, the projection optical system 12, and the exterior case 13. As shown in FIGS. 3A and 3B, the outer case 13 includes a wall 13-1, a wall 13-2, a wall 13-3, a wall 13-5, and a wall 13-6. , Wall 13-7 and wall 13-8.
As described above, the wall 13-1 has the contact surface 13-1A. In the figure, the surface on the −X direction side of the wall 13-1 (the surface on the wearer M side) is the contact surface 13-1A.

As shown to Fig.3 (a), the wall 13-1, the wall 13-2, and the wall 13-3 are arrange | positioned in order along the X direction. The wall 13-1, the wall 13-2, and the wall 13-3 have a rectangular shape that is elongated in the Z direction. A wall 13-5 and a wall 13-6 are disposed at both ends of the wall 13-1, the wall 13-2, and the wall 13-3 in the Z direction.
The wall 13-2 is an example of the “second wall” in the present invention, and the wall 13-3 is an example of the “third wall” in the present invention.

  The wall 13-1 is disposed on the wearer M side, and has a portion extending in the Z direction and a portion extending in the X direction. That is, the wall 13-1 has a portion bent in the X direction at both ends of the portion elongated in the Z direction.

The wall 13-3 is disposed on the frame 121 side and is fixed (adhered) to the frame 121. The wall 13-5 is disposed on the image display device 11 side, and the image display device 11 is fixed (adhered) thereto. The wall 13-6 is disposed on the light guide device 20 side, and the light guide device 20 is fixed (adhered) thereto. The wall 13-6 has an opening 13-6CT, and the image light GL emitted from the image display device 11 enters the third reflecting surface 21c of the light guide device 20.
In addition, in order to suppress intrusion of foreign matter into the light guide device 20 through the opening 13-6, a translucent member (for example, dustproof glass) is provided so as to cover the opening 13-6CT of the wall 13-6. There may be.

As shown in FIG. 3B, a wall 13-7 and a wall 13-8 are arranged between the end of the wall 13-1 in the Y direction and the end of the wall 13-3 in the Y direction. Yes. The wall 13-7 and the wall 13-8 are long in the Z direction.
That is, the wall 13-1, the wall 13-3, the wall 13-5, the wall 13-6, the wall 13-7, and the wall 13-8 are arranged on the surface side of the exterior case 13, and the wall 13-2 is It is arranged inside the outer case 13.

In the image forming apparatus 10, a first space 15 (FIG. 3A) surrounded by the wall 13-1, the wall 13-2, the wall 13-7, and the wall 13-8 is formed. . Further, the image forming apparatus 10 includes a second wall surrounded by a wall 13-2, a wall 13-3, a wall 13-5, a wall 13-6, a wall 13-7, and a wall 13-8. The space 16 is formed. The first space 15 and the second space 16 are filled with either atmospheric air or decompressed air.
In other words, between the wall 13-1 and the wall 13-2, and between the wall 13-2 and the wall 13-3, either atmospheric pressure air or decompressed air is filled. .

  The image display device 11 is disposed between the wall 13-2 and the wall 13-3. Further, a first space 15 (air), a wall 13-2, and a second space 16 (air) are arranged between the wall 13-1 and the image display device 11. That is, the contact surface 13-1A (wall 13-1) is disposed with two spaces (the first space 15 and the second space 16) from the image display device 11.

  The walls 13-1, 13-2, 13-7, and 13-8 are made of a material that hardly transmits heat. For example, the walls 13-1, 13-2, 13-7, and 13-8 are made of a resin material, specifically, a resin material such as polyolefin, fluorine resin, acrylic, vinyl chloride, polyester, polystyrene, or ABS resin. Can do.

The walls 13-3, 13-5, and 13-6 are made of a material that easily conducts heat. The material constituting the walls 13-3, 13-5, and 13-6 is preferably a light material that easily conducts heat. For example, a light metal material such as aluminum, aluminum alloy, magnesium, or magnesium alloy can be used.
Thus, the thermal conductivity of the wall 13-1 and the walls 13-2, 13-7, 13-8 is smaller than the thermal conductivity of the walls 13-3, 13-5, 13-6. .

  Although details will be described later, when the image display device 11 is energized and the image display device 11 emits the image light GL, the image display device 11 generates heat. The image forming apparatus 10 of the present embodiment has a configuration that reduces (suppresses) the influence of heat generated by the image display apparatus 11. In other words, in order to suppress the influence of heat generated in the image display device 11, the image forming device 10 includes a wall 13-1, a first space 15, and a space between the wearer M and the image display device 11. The wall 13-2 and the second space 16 are arranged.

Since the wall 13-1 and the wall 13-2 are made of a material that hardly transmits heat, it is difficult for heat to propagate to the wearer M side.
The first space 15 and the second space 16 are filled with either atmospheric air or decompressed air. For example, the thermal conductivity value of air at atmospheric pressure is 0.026 W / mK at room temperature. The value of the thermal conductivity of the resin constituting the wall 13-1 and the wall 13-2 is approximately 0.2 W / mK to 0.3 W / mK at room temperature. Since the thermal conductivity of air at atmospheric pressure is extremely small compared to the thermal conductivity of resin, the first space 15 and the second space 16 filled with air at atmospheric pressure are walls 13 made of resin. -1 and the wall 13-2 are more difficult to transfer heat and have excellent heat insulation properties.

Therefore, between the wearer M and the image display device 11, the wall 13-1 made of a material that hardly transfers heat, the first space 15 that hardly transfers heat, and the material that hardly transfers heat are formed. By arranging the wall 13-2 and the second space 16 that is more difficult to transmit heat, the heat generated by the image display device 11 can be made difficult to propagate to the wearer M side.
That is, the image forming apparatus 10 has an excellent heat insulating property that heat generated by the image display device 11 is not easily transmitted to the wearer M side.

Note that heat is propagated from the wall 13-2 to the wall 13-1 by heat radiation from the wall 13-2 in addition to the heat propagation by the air filled in the first space 15. Therefore, it is more preferable that the image forming apparatus 10 has a configuration in which heat propagation by air is reduced and heat is propagated mainly by radiation of heat from the wall 13-2.
In other words, a configuration in which the first space 15 is filled with decompressed air and the heat insulation of the first space 15 is further improved is more preferable.

  Temporarily, there is no space between the wearer M and the image display device 11, and the wall 13-1 and the wall 13-2 made of a material that hardly transfers heat between the wearer M and the image display device. When the is disposed, suppression of heat transmitted from the image display device 11 to the wearer M is insufficient. Therefore, in order to sufficiently suppress the heat transmitted from the image display device 11 to the wearer M, at least one space (the first space 15 and the second space between the wearer M and the image display device 11). It is important to arrange the space 16).

  In the configuration in which at least one space is arranged between the wearer M and the image display device 11, if at least one of the wall 13-1 and the wall 13-2 is made of a material that is difficult to transfer heat, the image display device 11, even when the temperature of the wall 13-1 is increased due to the heat generated at 11, discomfort due to the temperature increase can be suppressed, and comfort (wearing feeling) can be ensured. That is, it is only necessary that at least one of the thermal conductivity of the wall 13-1 and the thermal conductivity of the wall 13-2 has a smaller configuration than the thermal conductivity of the wall 13-5. Note that the feeling of wearing varies from person to person, and some people do not feel uncomfortable even if the temperature rises during wearing, but there is little temperature transmission to the temporal region, in other words, the temperature change during use The problem is recognized from the viewpoint that less is more preferable.

In the image forming apparatus 10, the image display device 11 is fixed to the wall 13-5, the wall 13-5 is connected to the wall 13-3, and the wall 13-3 is connected to the frame 121 and the wall 13-6. Yes. Therefore, the heat generated by the image display device 11 is propagated to the wall 13-5 side, and further propagated to the frame 121 side and the wall 13-6 side via the wall 13-5. Since the walls 13-3, 13-5, and 13-6 are made of a material that easily transfers heat, the heat generated by the image display device 11 is transferred to the side of the walls 13-3, 13-5, and 13-6. It is possible to quickly and efficiently dissipate heat quickly and efficiently by using the walls 13-3, 13-5 and 13-6 as heat radiating portions.
That is, the image forming apparatus 10 has an excellent heat dissipation property that heat generated by the image display apparatus 11 is easily radiated to the side that does not affect the wearer M.

  Furthermore, by configuring the frame 121 with a material that easily conducts heat, heat generated by the image display device 11 can be quickly and efficiently propagated to the frame 121 side, and the frame 121 can be quickly used as a heat radiating part. And heat can be efficiently radiated.

  As described above, the frame 121 has a portion that contacts the human body. A portion that makes contact with the human body of the frame 121 is configured with a material that does not easily transmit heat, a portion that does not contact the human body of the frame 121 with a material that easily transmits heat, and a portion that does not contact the human body of the frame 121 serves as a heat radiating portion. It is preferable to utilize.

  As described above, the image forming apparatus 10 has excellent heat insulation properties that hardly transmit heat to the wearer M side, and excellent heat dissipation properties that easily dissipate heat to the side that does not affect the wearer M. ing. Therefore, the influence of the heat generated by the image display device 11 can be suppressed, that is, the temperature of the wall 13-1 can be hardly increased by the heat generated by the image display device 11. Therefore, the temperature rise of the wall 13-1 becomes too large, and the heat propagation to the wearer M can be suppressed.

"Outline of image display device"
FIG. 4 is a schematic sectional view of the image display device in a region B surrounded by a broken line in FIG. 3A, and shows a state in which the image display device is fixed (mounted) to the fifth wall. . In FIG. 4, components necessary for the description are illustrated, and components unnecessary for the description are not illustrated.
The outline of the image display device 11 will be described below with reference to FIG.

As shown in FIG. 4, the image display device 10 includes a printed circuit board 50, an organic EL display device 30, a semiconductor element 71, and the like. One surface of the printed circuit board 50 is bonded to the organic EL display device 30 with an adhesive 66. A semiconductor element 71 is mounted on the other surface of the printed circuit board 50, and is adhered to the wall 13-5 with an adhesive 65.
Although not shown, the image display device 11 has a connector and is connected to an external circuit (not shown) via a flexible printed board, a cable, and the like.

Although details will be described later, in the image display device 11, the organic EL display device 30 is a heat generation source. The heat generated by the organic EL display device 30 is propagated to the wall 13-5 side through the adhesive 66, the printed circuit board 50, and the adhesive 65.
The adhesives 65 and 66 are composed of a heat conductive adhesive that easily propagates heat.

  The organic EL display device 30 includes an element substrate 31 and a sealing substrate 32. The element substrate 31 of the organic EL display device 30 has an organic EL element 45 (see FIG. 6) that emits image light GL, and is mounted on one surface of the printed circuit board 50 as described above. That is, the element substrate 31 of the organic EL display device 30 is bonded to one surface of the printed circuit board 50 by the adhesive 66.

  The semiconductor element 71 is a control circuit that supplies various control signals to the organic EL display device 30 and is mounted on the other surface of the printed circuit board 50 as described above. Although not shown, in addition to the semiconductor element 71, a plurality of electronic components such as other semiconductor elements (for example, a power supply circuit), a resistance element, and a capacitor element are mounted on the other surface of the printed circuit board 50. ing.

  The printed circuit board 50 is a member for wiring to electronic components such as the semiconductor element 71 and the organic EL display device 30, and includes a printed circuit board body 50a and a solder resist 53 that covers the surface of the printed circuit board body 50a. The

  The printed circuit board body 50a has a structure in which a conductive layer 52a, an insulating layer 51a, a conductive layer 52b, an insulating layer 51b, a conductive layer 52c, an insulating layer 51c, and a conductive layer 52d are sequentially stacked in the Z direction. have. That is, the printed circuit board body 50a has a multilayer structure in which wiring layers and insulating layers are alternately stacked.

  The conductive layers 52a, 52b, 52c, and 52d are made of a metal such as copper, for example, and are excellent in electrical conductivity and thermal conductivity. For example, the conductive layer 52 a is formed with signal wirings, electrode pads for supplying signals to the organic EL display device 30, and the like. For example, a ground wiring to which a ground potential is supplied is formed in the conductive layer 52b. For example, the power supply wiring is formed in the conductive layer 52c. In the conductive layer 52d, signal wirings, electrode pads for supplying signals to the semiconductor element 71, and the like are formed.

  The conductive layer 52b (ground wiring) and the conductive layer 52c (power supply wiring) are solid patterns, and the conductive layer 52a (signal wiring and electrode pads) and the conductive layer 52d (signal wiring and electrode pads) are wirings and terminals (electrodes). Pattern).

The insulating layers 51a, 51b, and 51c are made of, for example, an organic material such as an epoxy material or a polyimide material. The insulating layers 51a, 51b, and 51c may be made of an inorganic material such as ceramics or a composite material in which glass fibers are impregnated with an organic material.
Although illustration is omitted, via holes are formed in the insulating layers 51a, 51b, and 51c, and the conductive layers 52a, 52b, 52c, and 52d are three-dimensionally wired by the via holes.

  Further, the surface of the printed board body 50 a on the side where the organic EL display device 30 is mounted and the surface of the printed board body 50 a on which the semiconductor element 71 is mounted are covered with a solder resist 53. The solder resist 53 is an insulating layer that protects the conductive layer 52a and the conductive layer 52d provided on the surface of the printed circuit board body 50a.

  As described above, the printed circuit board 50 has the conductive layers (conductive layers 52a, 52b, 52c, 52d) and the insulating layers (solder resist 53, insulating layers 51a, 51b, 51c, 51d) alternately stacked in the Z direction. It has a multilayer structure. The conductive layers 52a, 52b, 52c, and 52d having excellent thermal conductivity enhance the thermal conductivity in the Z direction of the printed circuit board 50, and heat is efficiently propagated in the Z direction.

On the side of the printed board 50 where the semiconductor element 71 is mounted, the semiconductor element 71 has bumps 72 and is connected (mounted) to an electrode pad formed of the conductive layer 52d.
On the side of the printed circuit board 50 where the organic EL display device 30 is mounted, the external connection terminal 37 (see FIG. 5) of the organic EL display device 30 is an electrode formed of a conductive layer 52a by a bonding wire (not shown). Connected (mounted) to the pad. That is, the organic EL display device 30 is mounted on the printed board 50 by wire bonding.

"Outline of organic EL display device"
FIG. 5 is a schematic plan view of the image display device on the side where the organic EL display device is mounted. FIG. 6 is an equivalent circuit diagram showing an electrical configuration of the organic EL display device. In FIGS. 5 and 6, components necessary for the description are shown, and components unnecessary for the description are not shown.
Next, an outline of the organic EL display device 30 will be described with reference to FIGS. 5 and 6.

  As shown in FIG. 5, the organic EL display device 30 is fixed to one surface of the printed board 50. The organic EL display device 30 includes an element substrate 31 and a sealing substrate 32, and both the substrates are bonded by a resin layer (not shown).

  The element substrate 31 includes a plurality of pixels P arranged in a matrix in the display region E, a driving circuit (data line driving circuit 35 and scanning line driving circuit 36) for driving the plurality of pixels P, an external connection terminal 37, and the like. Is formed. Specifically, the element substrate 31 is a semiconductor substrate (silicon substrate) on which pixels P, a data line driving circuit 35, a scanning line driving circuit 36, an external connection terminal 37, and the like are formed. That is, the element substrate 31 is composed of a semiconductor substrate (silicon substrate) having excellent thermal conductivity.

  A plurality of external connection terminals 37 are arranged along the first side of the element substrate 31. A data line driving circuit 35 is disposed between the plurality of external connection terminals 37 and the display area E. A scanning line driving circuit 36 is disposed between the second and third sides that are orthogonal to the first side and face each other, and the display area E.

The sealing substrate 32 is smaller than the element substrate 31 and is arranged so that the external connection terminals 37 are exposed. The sealing substrate 32 is a translucent insulating substrate, and a quartz substrate, a glass substrate, or the like can be used. The sealing substrate 32 has a role to protect an organic EL element 45 (see FIG. 6), which will be described later, disposed in the display area E from being damaged, and is provided wider than the display area E. Further, the sealing substrate 32 is a surface on the side from which the image light GL is emitted in the organic EL display device 30.
A protective glass for protecting the organic EL display device 30 may be disposed on the surface of the sealing substrate 32 opposite to the element substrate 31.

  As shown in FIG. 6, the organic EL display device 30 includes a plurality of scanning lines 33 and a plurality of data lines 38 that intersect with each other, and a plurality of power supply lines 39 that are parallel to each of the plurality of data lines 38. doing. The scanning line 33 is connected to the scanning line driving circuit 36, and the data line 38 is connected to the data line driving circuit 35. In addition, pixels P are arranged in a matrix corresponding to the intersections of the plurality of scanning lines 33 and the plurality of data lines 38.

  The pixel P includes an organic EL element 45 that is a light emitting element, and a pixel circuit 40 that controls driving (light emission) of the organic EL element 45.

  The organic EL element 45 includes a pixel electrode 46 that functions as an anode, a counter electrode 48 that functions as a cathode, and a light emitting functional layer 47 that includes an organic light emitting layer provided between the pixel electrode 46 and the counter electrode 48. doing. Such an organic EL element 45 can be electrically expressed as a diode, and the light emitting functional layer 47 emits light by a current flowing through the organic EL element 45. Specifically, holes are supplied from the pixel electrode 46 to the light emitting functional layer 47, electrons are supplied from the counter electrode 48 to the light emitting functional layer 47, and the holes and electrons are combined in the light emitting functional layer 47. Emits light.

  The pixel circuit 40 includes a switching transistor 41, a storage capacitor 42, and a driving transistor 43. The two transistors 41 and 43 can be configured using, for example, an n-channel or p-channel transistor.

  The gate of the switching transistor 41 is connected to the scanning line 33. One of the source and drain of the switching transistor 41 is connected to the data line 38. The other of the source and drain of the switching transistor 41 is connected to the gate of the driving transistor 43.

  One of the source and drain of the driving transistor 43 is connected to the pixel electrode 46 of the organic EL element 45. The other of the source and drain of the driving transistor 43 is connected to the power supply line 39. A storage capacitor 42 is connected between the gate of the driving transistor 43 and the power supply line 39.

  When the scanning line 33 is driven and the switching transistor 41 is turned on, the potential based on the image signal supplied from the data line 38 at that time is held in the storage capacitor 42 via the switching transistor 41. The on / off state of the driving transistor 43 is determined according to the potential of the storage capacitor 42, that is, the gate potential of the driving transistor 43. When the driving transistor 43 is turned on, a current corresponding to the gate potential is supplied to the light emitting functional layer 47 sandwiched between the pixel electrode 46 and the counter electrode 48 from the power line 39 via the driving transistor 43. Flows. The organic EL element 45 emits light according to the amount of current flowing through the light emitting functional layer 47.

  The scanning line driving circuit 36 supplies a scanning signal for controlling on / off of the switching transistor 41. The data line driving circuit 35 controls a current for the organic EL element 45 to emit light. For this reason, since a larger current flows in the data line driving circuit 35 than in the scanning line driving circuit 36, heat is generated by the current. Further, the organic EL element 45 also generates heat due to the current flowing through the organic EL element 45. Since the data line driving circuit 35 controls the entire current flowing through the plurality of organic EL elements 45, a larger current flows than the current flowing through the single organic EL element 45, and the heat generation amount is higher than that of the single organic EL element 45. Is big.

  The heat generated by the data line driving circuit 35 is propagated to the organic EL element 45 through the base material (silicon substrate) of the element substrate 31 having excellent thermal conductivity. That is, the organic EL element 45 may be affected by the heat generated by the data line driving circuit 35 in addition to the heat generated by the current flowing through the organic EL element 45, and the temperature of the organic EL element 45 may increase. When the temperature of the light emitting functional layer 47 of the organic EL element 45 rises, the deterioration of the light emitting functional layer 47 of the organic EL element 45 is accelerated, so that the life of the organic EL element 45 may be shortened.

  The heat generated by the data line driving circuit 35 and the organic EL element 45 is excellent in the base material (silicon substrate) of the element substrate 31 excellent in thermal conductivity, the adhesive 66 excellent in thermal conductivity, and the thermal conductivity. Then, the heat is transferred to the wall 13-5 quickly and efficiently through the printed circuit board 50 and the adhesive 65 having excellent heat conductivity.

  Further, the heat propagated to the wall 13-5 is propagated to the wall 13-3 having excellent thermal conductivity and the portion having excellent thermal conductivity of the frame 121. Heat generated by the data line driving circuit 35 and the organic EL element 45 is radiated using the portions having excellent thermal conductivity of the walls 13-3, 13-5, 13-6 and the frame 121 as heat radiating portions.

  Therefore, the influence of heat generated by the data line driving circuit 35 and the organic EL element 45, that is, the temperature rise of the organic EL element 45 is suppressed, and the deterioration of the organic EL element 45 can be suppressed. That is, the reliability of the organic EL element 45 can be improved.

  As described above, the image forming apparatus 10 according to the present embodiment has an effect of suppressing deterioration of the organic EL element 45 in addition to the effect that heat is not easily transmitted to the wearer M. Therefore, the image forming apparatus 10 of this embodiment has excellent reliability.

(Embodiment 2)
FIG. 7A corresponds to FIG. 3A and is a schematic cross-sectional view illustrating a configuration of an image forming apparatus according to the second embodiment. FIG. 3B is a schematic plan view seen from the direction crossing FIG. 3A, that is, a schematic plan view of the image forming apparatus seen from the Z direction.

The image forming apparatus 10 according to the present embodiment has a wall 13-4 on the frame 121 side, and the third space 17 is formed between the image display apparatus 11 and the frame 121. The main difference from the image forming apparatus 10 according to FIG.
Hereinafter, with reference to FIG. 7A and FIG. 7B, the image forming apparatus 10 according to the present embodiment will be described focusing on differences from the image forming apparatus 10 according to the first embodiment. Moreover, about the same component as Embodiment 1, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

As shown to Fig.7 (a), the wall 13-1, the wall 13-2, the wall 13-3, and the wall 13-4 are arrange | positioned in order along the X direction. The wall 13-1, the wall 13-2, the wall 13-3, and the wall 13-4 have a rectangular shape that is elongated in the Z direction.
The wall 13-4 is an example of the “fourth wall” in the present invention.

The wall 13-4 is disposed on the frame 121 side and is fixed (adhered) to the frame 121. The wall 13-4 has a portion extending in the Z direction and a portion bent in the X direction at both ends of the portion extending in the Z direction.
That is, the wall 13-1 and the wall 13-4 have a symmetrical shape with the image display device 11 in between.

As shown in FIG. 7B, a wall 13-7 and a wall 13-8 are arranged between the end of the wall 13-1 in the Y direction and the end of the wall 13-4 in the Y direction. Yes. The wall 13-7 and the wall 13-8 are long in the Z direction.
That is, the wall 13-1, the wall 13-4, the wall 13-5, the wall 13-6, the wall 13-7, and the wall 13-8 are arranged on the surface side of the exterior case 13, and the wall 13-2 and The wall 13-3 is disposed inside the exterior case 13.

  The image forming apparatus 10 includes a first space 15 surrounded by a wall 13-1, a wall 13-2, a wall 13-7, and a wall 13-8 between the wall 13-1 and the wall 13-2. (FIG. 7A) is formed. Furthermore, the wall 13-2, the wall 13-3, the wall 13-5, the wall 13-6, the wall 13-7, and the wall 13-8 are surrounded by the wall 13-2 and the wall 13-3. A second space 16 (FIG. 7A) is formed. Furthermore, a third space 17 (FIG. 7A) surrounded by the wall 13-3, the wall 13-4, the wall 13-7, and the wall 13-8 between the wall 13-3 and the wall 13-4. )) Is formed. The third space 17 may be connected to the space 15.

The first space 15, the second space 16, and the third space 17 are filled with either atmospheric pressure air or decompressed air.
In other words, there is atmospheric pressure air between the wall 13-1 and the wall 13-2, between the wall 13-2 and the wall 13-3, and between the wall 13-3 and the wall 13-4. Or it is filled with either decompressed air.

The wall 13-3 and the wall 13-4 are made of a material that hardly transfers heat. For example, the wall 13-3 and the wall 13-4 can be made of a resin material, specifically, a resin material such as polyolefin, fluorine resin, acrylic, vinyl chloride, polyester, polystyrene, or ABS resin.
The wall 13-3 of the first embodiment is made of a material that easily conducts heat, and this is also a difference between the present embodiment and the first embodiment.

  In the image forming apparatus 10 of the present embodiment, heat is transmitted between the image display device 11 and the frame 121, the wall 13-3 that is difficult to transfer heat, and the third space 17 (air) that is further difficult to transfer heat. A difficult wall 13-4 is arranged. Therefore, heat generated by the image display device 11 is not easily propagated to the frame 121 side.

  The wearer M holds the frame 121 and attaches / detaches the virtual image display device 100. When the heat generated by the image display device 11 is transmitted to the frame 121 side and the temperature of the frame 121 becomes high, for example, the wearer M may feel uncomfortable when holding the frame 121, but the image display device 11 Since the generated heat is difficult to propagate to the frame 121 side, such a sense of incongruity can be suppressed.

(Embodiment 3)
FIG. 8 is a schematic diagram illustrating a configuration of a smart watch according to the third embodiment. FIG. 9 is a schematic cross-sectional view of the display unit taken along line AA ′ of FIG.
Below, with reference to FIG.8 and FIG.9, the outline | summary of the smartwatch 200 which concerns on this embodiment is demonstrated.

The smart watch 200 is an example of the “electronic device” in the present invention, and is a wearable watch having functions such as a personal computer and a watch. As shown in FIG. 8, the smart watch 200 is worn on the arm of the wearer M, and has a function of inputting and processing data and a function of displaying data, and a function and data of wireless communication. And a main body 202 having a function to perform the above.
The display unit 201 is an example of the “electro-optical device” in the present invention.

  The display unit 201 displays icons for instructing various processes, time (not shown), and the like. The wearer M can execute various processes by touching the icon (touch panel 8 (see FIG. 9)) on the display unit 201.

  The display unit 201 has a configuration in which the projection optical system 12 is deleted from the image forming apparatus 10 of Embodiment 1 and a touch panel 8 is newly added. As shown in FIG. 9, the display unit 201 includes an exterior case 13, an image display device 11, and a touch panel 8 arranged in this order from the wearer M side.

  The exterior case 13 includes a case member 13-1a and a gripping member 13-5a. A surface 13-1b on the wearer M side of the case member 13-1a is a contact surface. The case member 13-1a has a space (cavity) 18 therein. The space 18 is filled with either atmospheric pressure air or decompressed air, and has excellent heat insulation. The gripping member 13-5a is bent on the touch panel 8 side and grips (stores) the image display device 11.

  The case member 13-1a is made of a material that hardly transfers heat, and the gripping member 13-5a is made of a material that easily transfers heat. That is, the thermal conductivity of the case member 13-1a is smaller than the thermal conductivity of the gripping member 13-5a.

The image display device 11 has the same configuration as the image display device 11 of the eleventh embodiment, and generates heat when the organic EL display device 30 (see FIG. 4) is energized to display an image.
The touch panel 8 is a data input unit in the display unit 201.

  Between the image display device 11 and the wearer M, the case member 13-1a that hardly transfers heat and the space 18 having excellent heat insulation properties are disposed. Is difficult to propagate to the wearer M side.

  The present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit or idea of the invention that can be read from the claims and the entire specification. Electronic equipment equipped with the electro-optical device is also included in the technical scope of the present invention. Various modifications other than the above embodiment are conceivable. Hereinafter, a modification will be described.

(Modification 1)
The image display apparatus 11 and the image display apparatus 11 constituting the display unit 201 according to the present invention are not limited to the image display apparatus 11 described above. For example, the image display device 11 may have a liquid crystal display device instead of the organic EL display device 30.

(Modification 2)
The electronic apparatus to which the image forming apparatus 10 or the display unit 201 according to the present invention is applied is not limited to the virtual image display apparatus 100 or the smart watch 200 described above. For example, the image forming apparatus 10 and the display unit 201 described above can be applied to a wearable computer or a wearable phone that can be attached to and detached from a human body. That is, the image forming apparatus 10 and the display unit 201 according to the present invention are suitable for a display unit of an electronic device (wearable device) that can be attached to and detached from a human body.

(Modification 3)
FIGS. 10A, 10B, and 10C are diagrams corresponding to FIG. 3A, and are schematic cross-sectional views of an image forming apparatus according to Modification 3. FIG. In Modification 3, the configuration (shape) of the outer case is different from that of the outer case 13 of the first embodiment, and other configurations are the same as those of the first embodiment.
As shown to Fig.10 (a), the image display apparatus 11 is arrange | positioned in contact with the wall 13-2 and the wall 13-3 between the wall 13-2 and the wall 13-3. On the other hand, the wall 13-2 and the wall 13-3 of the first embodiment are arranged apart from the image display device 11 (see FIG. 3A). This is the main difference between this modification and the first embodiment.

In this modification, between the wearer M and the image display device 11, the wall 13-1 that hardly transmits heat, the first space 15 (air) that hardly transfers heat, and the wall 13-2 that hardly transfers heat. Therefore, the heat generated by the image display device 11 is not easily propagated to the wearer M (contact surface 13-1A) side.
In order to make it difficult for the heat generated by the image display device 11 to be transmitted to the wearer M, at least one space (first space 15) is provided between the wearer M and the image display device 11. It only has to be arranged. Compared to the first embodiment, by reducing the number of spaces arranged between the wearer M and the image display device 11, the image display device 11 can be made thinner.

As illustrated in FIG. 10B, the wall 13-3 a has an L shape and is disposed on the frame 121 side and the image display device 11 side. The frame 121 and the image display device 11 are fixed (adhered) to the wall 13-3a.
That is, the wall 13-3a of this modification has a configuration in which the wall 13-3 and the wall 13-5 in the first embodiment are integrated. This is the difference between this modification and the first embodiment.

  By integrating the wall 13-3 and the wall 13-5 in the first embodiment, the heat propagation loss at the contact portion between the wall 13-3 and the wall 13-5 in the first embodiment is reduced. Therefore, this modification can improve the heat propagation property from the image display device 11 toward the frame 121 as compared with the first embodiment.

  As shown in FIG. 10C, a first space 15 is formed in a case member 13-1c having a cavity. In the first embodiment, a first space 15 (see FIG. 3) is formed in a region surrounded by the wall 13-1, the wall 13-2, the wall 13-7, and the wall 13-8. . This is the difference between this modification and the first embodiment.

  That is, the case member 13-1c of this modification corresponds to a member in which the wall 13-1, the wall 13-2, the wall 13-7, and the wall 13-8 of the first embodiment are integrated. With this configuration, the airtightness of the member forming the first space 15 can be enhanced. For example, when the decompressed air is filled in the first space 15, the pressure change of the air filled in the first space 15 is suppressed by increasing the airtightness of the members forming the first space 15. And the outstanding heat insulation of the 1st space 15 can be maintained.

(Modification 4)
In the image forming apparatus 10 according to the first embodiment, the image display apparatus 11 is fixed to the wall 13-5, but is not limited thereto. For example, the image display device 11 may be fixed to any one of the wall 13-3, the wall 13-7, and the wall 13-8. Note that the wall to which the image display device 11 is fixed is preferably made of a material having excellent thermal conductivity.

  Furthermore, although the air | atmosphere of the atmospheric pressure or the pressure-reduced air was filled in space 15,16,17,18, it is not limited to this. The space 15, 16, 17, 18 may be configured to be filled with atmospheric pressure gas or decompressed gas. For example, the space 15, 16, 17, 18 is filled with atmospheric pressure nitrogen or decompressed nitrogen. It may be a filled configuration.

  Furthermore, in the image forming apparatus 10 according to the first embodiment, the exterior case 13 that is a casing that houses the image display apparatus 11 and the projection optical system 12 and the frame 121 that is the casing of the virtual image display apparatus 100 are separately formed. However, it is not limited to this. For example, a configuration in which a part of the frame 121 that is a housing of the virtual image display device 100 is a part of the exterior case 13 may be used. Or the structure which accommodates the image display apparatus 11 and the projection optical system 12 in the virtual image display apparatus 100 may be sufficient. In these configurations, it is preferable to arrange at least one space filled with atmospheric pressure gas or decompressed gas between the human contact surface and the image display device 11 which is a heat generation source.

(Modification 5)
This will be described with reference to FIG.
In the said embodiment and the modification, although demonstrated as what the wall 13-1 by the side of a human body (wearing person) contacts a temporal region, it is not limited to this structure and the wall 13-1 is a temporal region. It may be separated from the part. In other words, it is good also as a structure with a clearance gap between the wall 13-1 located in a wearer side, and a temporal region. For example, in FIG. 1, the box-shaped first image forming apparatus 10 is configured to project to the inside of the frame 121, but may be configured to project to the outside of the frame 121. The same applies to the second image forming apparatus 9.
Even in this configuration, the virtual image display device 100 is mounted on the head by the pad portion that hangs on the wearer's nose and the temple portion of the frame 121 that hangs on the ear, similarly to the glasses. There is no hindrance. Furthermore, since a gap is formed between the image forming apparatuses 9 and 10 that are heat generating portions and the temporal portion, and this gap functions as a heat insulating space (heat insulating portion), more heat is transmitted to the temporal portion. Can be reduced.

  DESCRIPTION OF SYMBOLS 9 ... 2nd image forming apparatus, 10 ... 1st image forming apparatus, 11 ... Image display apparatus, 12 ... Projection optical system, 13 ... Exterior case, 13-1A ... Contact surface, 13-1, 13-2 13-3, 13-4, 13-5, 13-6, 13-7, 13-8 ... wall, 13-6CT ... opening, 15 ... first space, 16 ... second space, 17 ... third 20 ... light guide device, 21 ... light guide member, 30 ... organic EL display device, 100 ... virtual image display device, 100A ... first display device, 100B ... second display device, 121 ... frame.

Claims (11)

An electro-optical device that can be attached to a human body,
A display unit having a pixel and a drive circuit that drives the pixel, and an exterior case that houses the display unit and has a contact surface that contacts the human body,
The electro-optical device, wherein the contact surface is disposed with at least one space from the display unit.   The electro-optical device according to claim 1, wherein the space is filled with either atmospheric pressure air or reduced pressure air.   The electro-optical device according to claim 1, wherein the contact surface is disposed with two spaces from the display unit. An electro-optical device that can be attached to a human body,
The electro-optical device includes a display unit having a pixel and a drive circuit that drives the pixel, and an exterior case that houses the display unit and has a contact surface that contacts a human body,
The exterior case includes a first wall, a second wall, and a third wall that are sequentially arranged in a first direction from the contact surface that contacts the human body toward the display unit,
The first wall has a contact surface that contacts the human body;
The electro-optical device, wherein the display unit is disposed between the second wall and the third wall.   The space between the first wall and the second wall and the space between the second wall and the third wall are either atmospheric pressure air or decompressed air. The electro-optical device according to claim 4, wherein the electro-optical device is filled. The exterior case includes the first wall, the second wall, the third wall, and a fourth wall, which are sequentially arranged in the first direction,
6. The electro-optical device according to claim 4, wherein the space between the third wall and the fourth wall is filled with either atmospheric pressure air or reduced-pressure air. apparatus. The exterior case has a fifth wall;
The electro-optical device according to claim 4, wherein the display unit is fixed to the fifth wall.   The electro-optical device according to claim 7, wherein at least one of the thermal conductivity of the first wall and the thermal conductivity of the second wall is smaller than the thermal conductivity of the fifth wall. .   The electro-optical device according to claim 1, wherein an organic electroluminescence element is formed in the pixel.   An electronic apparatus comprising the electro-optical device according to claim 1. An electro-optical device that can be attached to a human body,
A display unit having a pixel and a drive circuit for driving the pixel, and an exterior case that houses the display unit and has a wall located on the human body side,
The electro-optical device, wherein the wall is disposed with at least one space from the display unit.

Images