JP2008275985A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device giving an excellent sensuous recognition performance of operation quantity at low cost. <P>SOLUTION: The overlapping degree of the light shield part of a first light shield plate 5 over the light transmission part of a second light shield plate 6 varies by the turning operation of a turning operator 4, the quantity of the transmission light from a light source 3 to a position out of the turning operator 4 varies, and the brightness of the turning operator 4 varies. The variation in the brightness of the turning operator 4 is sensuously captured and visually recognized even when an operator does not gaze. Thus, excellent sensuous recognition of the operating quantity is available, further, the excellency is provided at low cost without necessitating expensive components such as an IC and a liquid crystal panel or the like. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a display device that displays an operation amount.

Conventionally, as a display device that displays an operation amount, a display device that displays a numerical value or a bar graphic is generally used for an operation display of a volume in a television receiver or an operation display of a light amount of a camera function in a mobile phone. (For example, see Patent Documents 1 and 2).
Japanese Utility Model Publication No. 63-152373 JP 2004-135177 A

  In the case of the above-mentioned conventional ones, it is difficult to recognize the operation amount without staring at the displayed numbers and bar graphics, and it is inferior to the sensory recognizability of the operation amounts. Since the display requires an IC, a liquid crystal panel, etc., there is a problem that the cost increases.

  The present invention has been made in view of the above-described circumstances, and therefore an object of the present invention is to provide a display device that is excellent in sensory recognition of an operation amount and can be realized at low cost.

  In order to achieve the above object, a display device according to the present invention includes a light source, a rotary operator having translucency provided at a position of a light projection destination of the light source, and the rotary operator and the light source. A first light-shielding plate that is provided between the first light-shielding plate and the second light-shielding plate and that is provided so as to overlap the light projecting direction of the light source. And the second light-shielding plate has a slit-shaped light-shielding portion extending in the rotation direction and a slit-shaped light-transmitting portion, the positions of which are different from each other at the center for each rotation angle, and the rotary operation element. The degree of overlap of the light-shielding portion of the first light-shielding plate with respect to the light-transmissive portion of the second light-shielding plate is changed by the rotation of the first light-shielding plate accompanying the rotation of the first light-shielding plate. The amount is controlled and displayed.

  According to the above means, the degree of overlap of the light shielding portion of the first light shielding plate with respect to the light transmitting portion of the second light shielding plate is changed by rotating the rotation operator, and the distance from the light source to the outside of the rotary operation member is changed. The lightness of the rotary operation element changes as the light transmission amount changes. This change in brightness of the rotary operator is perceived and recognized visually by the user without staring. Thus, the sensory recognizability of the operation amount can be improved, and it can be realized at low cost without requiring expensive parts such as an IC and a liquid crystal panel.

Hereinafter, an example (one embodiment) of the present invention will be described with reference to the drawings.
First, FIG. 1 shows an overall configuration, in which a rotation detector 2 and a light source 3 are arranged on the front surface (upper surface in the drawing) of a base 1 such as an insulator. The rotation detector 2 is, for example, a rotary switch, and switches a built-in contact (not shown) when the shaft 2a is rotated. The rotation detector 2 may be a rotary encoder. The light source 3 is, for example, a light emitting diode, and a plurality (for example, six) of light sources 3 are arranged around the rotation detector 2.

  The projecting destination of the light source 3 is the front (upward in the figure), and the rotary operation element 4 is disposed at that position. This rotary operation element 4 is formed by superposing a thin disc-shaped translucent cover 4b on a generally disc-shaped lens 4a and surrounding the periphery with a light-shielding ring 4c. The cover 4b has translucency. The rotary operator 4 is connected to the shaft 2a of the rotation detector 2 at the center of the lens 4a on the light source 3 side so as to rotate the shaft 2a.

  Between the rotary operation element 4 and the light source 3, a first light shielding plate 5 and a second light shielding plate 6 are arranged so as to overlap each other in the front and rear (up and down in the drawing) direction, which is the light projecting direction of the light source 3. Yes. These light shielding plates 5 and 6 are disk-shaped as shown in FIG. 2, and light shielding portions 5a and 6a made of a slit-like light shielding material or a light shielding coating film extending in the rotation direction, and the slit-like light transmitting material or In this case, the light-transmitting portions 5b and 6b each having an opening or the like are provided in such a manner that the positions from the center portion are staggered for each rotation angle of 90 degrees.

  The first light-shielding plate 5 is attached to the shaft 2a of the rotation detector 2 so as to rotate with the shaft 2a, and thus rotate with the rotary operation element 4. In contrast, the second light-shielding plate 5 6 is fixed so that it cannot rotate. In this case, the fixed member is a body 7 formed of a light shielding member, and the body 7 includes a cylindrical portion 7a and a panel portion 7b having a spread from the front end portion thereof to the periphery, The cylindrical portion 7a surrounds the front surface of the base 1 to the lower surface of the rotary operation element 4 to fix the second light shielding plate 6, and the panel portion 7b covers the entire area around the rotary operation element 4. ing.

  The surface of the panel portion 7b of the body 7 is provided with an indication relating to the operation of the rotary operation element 4 (for example, air volume control or temperature control in a vehicle air conditioner, or volume control in an audio device) (not shown). . Further, as shown in FIG. 1, a spherical concave portion 8 is formed on the back side of the central portion corresponding to the shaft 2a of the rotation detector 2 on the light transmitting cover 4b of the rotary operation element 4, thereby rotating. The shaft 2a of the detector 2 is not easily seen through.

Next, the operation and effect of the above configuration will be described.
If the rotary operation element 4 is rotated, the shaft 2a of the rotation detector 2 is rotated, so that the built-in contacts are switched in the rotation detector 2 as described above, for example, and the rotation amount (operation amount) is changed. At the same time, the first light shielding plate 5 is rotated outside the rotation detector 2. By the rotation of the first light shielding plate 5, the degree of overlap of the light shielding portion 5 a of the first light shielding plate 5 with respect to the light transmitting portion 6 b of the second light shielding plate 6 changes, and from the light source 3 to the outside of the rotary operator 4. The light transmission amount through the translucent portion 6b of the second light shielding plate 6, the translucent portion 5b of the first light shielding plate 5, the lens 4a of the rotary operation element 4, and the translucent cover 4b is changed, thereby rotating. The brightness of the operation element 4 changes.

FIG. 3 shows a state in which the light shielding portion 5a of the first light shielding plate 5 overlaps the entire light transmitting portion 6b of the second light shielding plate 6 (a state before operating the rotary operation element 4). Therefore, there is no light transmission from the light source 3 to the outside of the rotary operation element 4, and the brightness of the rotary operation element 4 is the lowest (dark).
On the other hand, FIG. 4 shows a state in which the light shielding portion 5a of the first light shielding plate 5 is overlapped with the half of the light transmitting portion 6b of the second light shielding plate 6 (the rotation operator 4 is rotated by 45 degrees). The light transmittance from the light source 3 to the outside of the rotary operation element 4 is greater than that described above with the appearance of the pattern, and the brightness of the rotary operation element 4 is also increased.

  5 shows a state where the light shielding portion 5a of the first light shielding plate 5 does not overlap with the entire light transmitting portion 6b of the second light shielding plate 6 (overlaps with the entire light shielding portion 6a). The light transmission from the light source 3 to the outside of the rotary operation element 4 further increases with the change in pattern, and the brightness of the rotary operation element 4 further increases. It is the highest (brighter).

  Thus, for example, it is possible to display air volume control or temperature control in an air conditioner of a vehicle, or to display volume control in an audio device. The change in brightness of the rotary operation element 4 that has been displayed can be stared by the user. At least it is perceived and perceived visually. Therefore, it is possible to improve the sensory recognition of the operation amount. In particular, in a vehicle such as an automobile, since it is not necessary to stare at the display portion, it is possible to avoid diverting attention to the front and to improve safety in use. In addition, in the case of this configuration, the above-described display can be realized without requiring expensive parts such as an IC or a liquid crystal panel, and can be realized at a low cost.

Note that the rotation angle at which the light shielding portions 5a and 6a and the light transmitting portions 5b and 6b of the first and second light shielding plates 5 and 6 are alternately changed may be larger or smaller than the above 90 degree angle. .
Further, the one that responds to the operation rotation of the rotary operation element 4 is not limited to the rotation detector 2 and may be a mechanical one such as a cam or a lever.
Furthermore, the second light shielding plate 6 is not limited to the first light shielding plate 5 rotating together with the rotary operation element, and may be one that rotates in the opposite direction to the first light shielding plate 5. Alternatively, the first light shielding plate 5 may rotate in the same direction or at a different rotational speed.

In addition, the first light-shielding plate 5 and the second light-shielding plate 6 may be overlapped in the light projecting direction of the light source 3 (upper and lower relationship in FIG. 1).
In addition, the present invention is not limited only to the embodiments described above and shown in the drawings. In particular, the application and other points of the display device can be appropriately modified and implemented within the scope not departing from the gist.

Sectional drawing of the whole structure which shows one Example of this invention Front view of first light shielding plate and second light shielding plate Front view of the operating state 1 Front view 2 Front view 3

Explanation of symbols

  In the drawings, 3 is a light source, 4 is a rotary operator, 5 is a first light shielding plate, 5a is a light shielding portion, 5b is a light transmitting portion, 6 is a second light shielding plate, 6a is a light shielding portion, and 6b is a light transmitting portion. Indicates.

Claims (1)

A light source;
A rotary operator having translucency provided at the position of the light projection destination of the light source;
A first light shielding plate that is provided between the rotary operator and the light source and rotates together with the rotary operator;
The first light-shielding plate and a second light-shielding plate provided to overlap in the light projecting direction of the light source,
The first and second light-shielding plates have slit-like light-shielding portions extending in the rotation direction, and the slit-like light-transmitting portions, with the positions from the central portion being staggered for each rotation angle,
The degree of overlap of the light shielding portion of the first light shielding plate changes with respect to the light transmitting portion of the second light shielding plate due to the rotation of the first light shielding plate accompanying the rotation of the rotary operator. A display device that controls and displays a light transmission amount with respect to a light source.

Images