JP2009092808A - Helmet mount display device - Google Patents

Abstract

An object of the present invention is to avoid interference between a face and a helmet mount display device without enlarging the helmet.
An arm 9 attached to a helmet 3 includes a display unit 7 having a display element 71 and a combiner 72 for guiding display light emitted from the display element 71 to an eye 11e of a user 11 of the helmet 3. Thus, it was supported at a position in front of the visor 5 so as not to interfere with the visor 5.
[Selection] Figure 1

Description

  The present invention relates to a helmet mount display device that is used while being mounted on a helmet.

  Conventionally, there is a helmet mount display device disposed inside a helmet (Japanese Patent Laid-Open No. 2000-284214). This helmet mount display device is composed of a display device, a combiner, and a lens.

  The display device is, for example, an LED (light emitting diode), an LCD (liquid crystal display element) or the like.

  The combiner is placed in front of the helmet user's face (between the helmet user's eyes and the visor).

  The combiner can see the scenery in front of the helmet user and can reflect the display light from the display device to the eyes of the helmet user.

The lens has a wavefront conversion function, and displays the display image so as to be located at a predetermined distance from the helmet user's eyes.
JP 2000-284214 A

  Since the display device, the combiner, and the lens constituting the helmet mount display device are disposed between the face of the helmet user and the visor, it is necessary to avoid interference between the face and the helmet mount display device. There was a problem that had to be increased.

  The present invention has been made in view of such circumstances, and an object thereof is to avoid interference between the face and the helmet mount display device without enlarging the helmet.

  In order to solve the above-mentioned problem, the helmet mount display device of the invention of claim 1 is a helmet mount display device mounted on a helmet having an openable / closable visor, wherein the display element and the display of eyes of a user of the helmet. A display unit having an optical system for guiding display light emitted from the element; and a support member attached to the helmet and supporting the display unit at a position in front of the visor and not interfering with the visor. It is characterized by having.

  According to a second aspect of the present invention, in the helmet mount display device according to the first aspect, the display unit is connected to the support member so that the direction of the display unit relative to the eyes of the user of the helmet can be adjusted. Features.

  According to a third aspect of the present invention, in the helmet mount display device according to the first or second aspect, the support member is located below the visor in a state in which a window of the helmet is closed.

  According to a fourth aspect of the present invention, in the helmet mount display device according to the first or second aspect, the support member is located on a side of the visor in a state where a window of the helmet is closed.

  According to the present invention, it is possible to avoid interference between the face and the helmet mount display device without enlarging the helmet.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a longitudinal sectional view showing a use state of a helmet mount display device according to a first embodiment of the present invention, and FIG. 2 is a perspective view thereof.

  This helmet mount display device is mounted on a so-called full-face helmet 3. The helmet 3 has a window 3a. The helmet 3 has a visor 5. The visor 5 can open and close the window 3a.

  The helmet mount display device includes a display unit 7 and an arm (support member) 9.

  The display unit 7 includes a display element 71, a combiner (optical system) 72, and a lens 73.

  For example, an LCD is used as the display element 71. The display element 71 is connected to a display control device (not shown). The display control device creates an image to be displayed on the display element 71. The display element 71 is illuminated from behind by a light source (not shown).

  The combiner 72 has a prism 72a and a half mirror 72b. The combiner 72 is held by a frame (not shown) together with the display element 71 and the lens 73. The combiner 72 can transmit external light in front of the user 11 of the helmet 3 and can reflect the display light from the display element 71 to the eyes 11 e of the helmet user 11.

  The lens 73 makes the display image of the display element 71 appear to be at a position away from the eye 11e of the helmet user 11 by a predetermined distance.

  The arm 9 has a straight bar shape. The arm 9 is located below the visor 5 in a state in which the window 3a of the helmet 3 is closed. One end of the arm 9 is fixed to the helmet 3. A spherical connecting portion 9 a is formed at the other end of the arm 9. The spherical connecting portion 9a is fitted in a concave portion (not shown) formed in the display portion 7 so as to be capable of relative rolling.

  The arm 9 supports the display unit 7 at a position in front of the visor 5 so as not to interfere with the visor 5 (a position where the visor 5 does not hit the display unit 7 even when the visor 5 is opened and closed).

  The display unit 7 supported by the arm 9 can be tilted in an arbitrary direction around the spherical connecting portion 9 a of the arm 9.

  When using the helmet-mounted display device, the display unit 7 is directed in an easy-to-see direction.

  Display light emitted from the display element 71 passes through the lens 73 and enters the prism 72 a of the combiner 72. The light incident on the prism 72a is reflected by the half mirror 72b and enters the eye 11e of the helmet user 11.

  At this time, the external light in front that has passed through the combiner 72 in the thickness direction of the combiner 72 overlaps with the display light that has passed through the lens 73 and enters the eyes 11e of the helmet user 11.

  As a result, the helmet user 11 can see the information displayed on the display element 71 as if it is floating in a landscape that is a predetermined distance away.

  According to this embodiment, since the display unit 7 is supported by the arm 9 attached to the helmet 3 at a position in front of the visor 5 and not interfering with the visor 5, the helmet user 11 does not enlarge the helmet 3. Interference between the face 11f and the helmet mount display device can be avoided.

  Further, since the helmet mount display device is not disposed between the face 11f of the helmet user 11 and the visor 5, the safety of the helmet user 11 when an impact is applied to the helmet 3 can be ensured.

  Moreover, since the combiner 72 is used as an optical element, see-through performance (ease of viewing the scenery in front of the helmet user 11) is high.

  FIG. 3 is a transverse sectional view showing a use state of the helmet mount display device according to the second embodiment of the present invention, and FIG. 4 is a perspective view thereof.

  Portions common to the first embodiment are denoted by the same reference numerals and description thereof is omitted. Only the main differences will be described below.

  In the first embodiment, the arm 9 is positioned below the visor 5 with the window 3a of the helmet 3 closed. In the second embodiment, the arm 209 has the window 3a of the helmet 3 closed. Is located on the side of the visor 5.

  One end of the arm 209 is fixed to one side of the helmet 3. The other end of the arm 209 is located on the left front side of the window 3 a of the helmet 3. A spherical connecting portion 9 a is formed at the other end of the arm 209. The spherical connecting part 9a is fitted in a concave part (not shown) of the display part 7 so as to be capable of relative rolling.

  According to the second embodiment, the same effect as that of the first embodiment is produced.

  In addition, although the helmet 3 of the above-mentioned embodiment is a full face type, a helmet is not restricted to a full face type.

  In addition to the LCD, the display element 71 includes a small CRT.

  The optical system is not limited to the combiner 72.

FIG. 1 is a longitudinal sectional view showing a use state of a helmet mount display device according to the first embodiment of the present invention. FIG. 2 is a perspective view thereof. FIG. 3 is a cross-sectional view showing a use state of the helmet mount display device according to the second embodiment of the present invention. FIG. 4 is a perspective view thereof.

Explanation of symbols

  3: helmet, 3a: window, 5: visor, 7: display unit, 71: display element, 72: combiner (optical system), 11: user, 11e: eyes, 11f: face, 9,209: arm (support) Element).

Claims (4)

In a helmet mount display device attached to a helmet having a visor that can be opened and closed,
A display unit having a display element and an optical system for guiding display light emitted from the display element to the eyes of a user of the helmet;
A helmet-mounted display device, comprising: a support member that is attached to the helmet and supports the display unit at a position in front of the visor and does not interfere with the visor.   2. The helmet mount display device according to claim 1, wherein the display unit is connected to the support member so that an orientation of the display unit with respect to an eye of a user of the helmet can be adjusted.   The helmet mount display device according to claim 1, wherein the support member is positioned below the visor in a state where a window of the helmet is closed.   The helmet mount display device according to claim 1, wherein the support member is located on a side of the visor in a state where a window of the helmet is closed.

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