JP4454123B2 - Illuminated display dial device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an illuminated display dial device.
[0002]
[Prior art and its problems]
The present applicant has developed and released a camera equipped with an illuminated display dial device that emits and displays a selected display symbol as a dial device for selecting a photographing mode (trade name “MZ7”). In this illuminated display dial device, a plurality of translucent display symbols are drawn on a display plate fixed to a fixed plate, and LEDs are fixed as light emitting members on the lower surface of each display symbol, and are rotated with respect to the fixed plate. The display symbol of the display board pointed to by the indicator of the rotary operation member supported so as to be capable of dynamic operation is lit and displayed by illumination from the back surface by the LED.
[0003]
However, in the conventional illuminated display dial device in which the LEDs are fixed to the display panel fixed to the fixed plate, the LEDs are required in the number corresponding to the number of display symbols to be lit and displayed, which is negative in terms of simplification of configuration and cost.
[0004]
OBJECT OF THE INVENTION
SUMMARY OF THE INVENTION An object of the present invention is to provide a display dial device with illumination that has a simplified structure that leads to cost reduction based on the above problems.
[0005]
SUMMARY OF THE INVENTION
The illuminated display dial device according to the present invention includes a fixed platen; a rotation operation member supported so as to be rotatable with respect to the fixed plate; and the fixed plate on the same circumference around the rotation center of the rotation operation member. A plurality of display symbols that are positioned and formed of a translucent material; and are fixed on the rotary operation member, and a plurality of display symbols on the fixed plate are selected from the back according to the rotational position of the rotation operation member. And a single light emitting member for illuminating.
[0007]
The fixed plate can be constituted by, for example, a perforated board having openings at positions corresponding to a plurality of display symbols, and a display board on which display symbols are drawn located on the openings of the perforated board.
[0008]
For example, the light emitting member can be fixed at an eccentric position on the surface of the annular code plate that detects the rotational position of the rotation operation member. In this aspect, the code plate to which the light emitting member is fixed by drilling the light transmitting hole at the position corresponding to the light emitting member of the rotation operation member can be fixed to the back surface of the rotation operation member.
[0009]
The illumination light emitted from the light emitting member passes through the light transmitting hole of the rotation operation member and the opening of the perforated board, and illuminates the display symbol on the display panel from the back side. Since the display symbol of the display panel is formed of a light-transmitting material, it transmits illumination light. For this reason, it is possible to display and display the display symbol by illumination from the back.
[0010]
By using an LED that emits a plurality of colors as a light emitting member, it is possible to change the color of the illumination light in accordance with the display symbol to be selected, thereby improving discrimination and visibility.
[0011]
Since the push button switch device is mounted at the center of rotation of the dial device, the operability is improved and the space on the upper wall of the camera is effectively used.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
1, 2 and 3 show an embodiment of the present invention. 1 is an exploded perspective view of the illuminated display dial device, FIG. 2 is a cross-sectional view of the illuminated display dial device taken along the line II-II in FIG. 1, and FIG. It is a part of sectional drawing along line III.
[0013]
The illuminated display dial device of the present invention is supported by a stationary platen 20 having a release button 10 at the center, a pedestal 50 for fixing the stationary platen 20, and a rotatable operation between the pedestal 50 and the stationary platen 20. And a circuit board 60 for fixing the pedestal 50, and the rotation operation member fixes the code plate 40 having the light emitting member 42a to the back surface.
[0014]
The release button 10 includes a substantially disc-shaped pressing operation portion 11, a shaft portion 12 projecting from the center of the back surface of the pressing operation portion 11 toward the circuit board 60, and the circuit board 60 from the outer peripheral lower end of the pressing operation portion 11. There are two locking claws 13 projecting toward the head. A claw portion 13 a that protrudes outward is formed at the tip of the locking claw 13. A compression spring 14 that urges the release button 10 in the protruding direction is mounted around the shaft portion 12.
[0015]
The stationary platen 20 is composed of a display plate 21 and a perforated plate 22, and the display plate 21 is annular, and display symbols 21 a to 21 f are made of a translucent material on the same circumference around the rotation center of the rotation operation member. Is formed. The perforated board 22 has openings 22 a to 22 f at positions corresponding to the display symbols 21 a to 21 f of the display board 21. On the rear surface of the perforated board 22, a cylindrical body 23 having an outer diameter smaller than the outer diameter of the perforated board 22 and having a bottom portion 24 is formed. A shaft hole 25 through which the shaft portion 12 of the release button 10 is inserted is formed in the bottom portion 24 of the cylindrical body 23 at the center. On both sides of the shaft hole, insertion holes 26 through which the locking claws 13 of the release button 10 are inserted are formed.
[0016]
The code plate 40 is annular, and one LED 42a that emits illumination light of a plurality of colors as a light emitting member is fixed at an eccentric position on the surface. A concentric cord portion 41 centering on the rotation center of the rotary operation member is formed on the back surface.
[0017]
The rotation operation member 30 has a bottom portion 31 and has a substantially cylindrical shape having an inner diameter larger than the outer diameter of the stationary platen 20. In the center of the bottom 31 is formed an opening 32 through which the cylindrical body 23 of the perforated board is inserted. Click holes 34 corresponding to the display symbols 21a to 21f are formed on the back surface of the rotation operation member 30 at predetermined intervals. The rotation operation member 30 is provided with a translucent portion 33 at a position corresponding to the LED 42 a fixed to the surface of the code plate 40.
[0018]
The pedestal 50 has an outer diameter smaller than the outer diameter of the rotation operation member 30 and has a substantially cylindrical shape whose upper end is closed by a lid 51, and screwed portions at two radial positions from the side surface near the lower end. 52 is protrudingly provided. A shaft hole 53 through which the shaft portion 12 of the release button 10 is inserted is formed in the center of the lid portion 51. On both sides of the shaft hole 53, insertion holes 54 through which the locking claws 13 of the release button 10 are inserted are formed. The lid portion 51 is provided with two substantially fan-shaped brush protruding hole portions 55 that extend from the shaft hole 53 in the radial direction. A click ball storage hole 57 for storing the click ball 56 is formed in an arbitrary position corresponding to the click hole 34 of the rotation operation member 30 in the region having no brush protruding hole 55 of the lid portion 51. Has been. A click spring 58 is fixed to the lower surface of the click ball storage hole 57 by screwing a screw 59 into the lid 51.
[0019]
A switch device 61 is installed on the circuit board 60 at a position corresponding to the shaft portion 12 of the release button 10. On both sides of the switch device 61, a rotational position detecting brush 62 and a power feeding brush 63 are respectively installed. The brushes 62 and 63 project from the brush projecting hole portions 55a and 55b formed in the lid portion 51 of the pedestal to the code plate 40 side, respectively.
[0020]
The illuminated display dial device of the present embodiment is assembled as follows. The release button 10 is bent into the insertion hole 26 of the fixed plate 20 by bending the locking claw 13 inward while compressing the compression spring 14 with the back surface of the pressing operation unit 11 and the bottom 24 of the cylindrical body 23 of the fixed plate 20. Insert. At the same time, the shaft portion 12 is inserted into the shaft hole 25 of the stationary platen 20 and the shaft hole 53 of the base 50. The locking claw 13 opens outwardly by elasticity after the claw portion 13a at the lower end is inserted through the insertion hole 26 of the stationary platen 20. Since the compression spring is compressed between the pressing operation unit 11 and the cylindrical body 23, the pressing operation unit 11 is constantly urged to move upward. For this reason, the claw portion 13 a of the locking claw 13 is prevented from coming off at a position in contact with the lower end of the cylindrical body 23. The release button 10 is attached to the stationary platen in this state.
[0021]
The rotation operation member 30 is positioned and placed on the pedestal 50 so that the click ball 56 fits between the click ball storage hole 57 of the pedestal 50 and any one of the click holes 34 of the rotation operation member 30. The fixed platen 20 to which the release button 10 is attached places the cylindrical body 23 through the opening 32 of the rotation operation member 30 and puts it on the rotation operation member 30. A screw 27 is screwed into the bottom 24 of the cylindrical body 23 of the fixed plate 20 from the back surface of the lid portion 51 of the pedestal 50 to fix the fixed plate 20 to the pedestal 50. The pedestal 50 in which the rotation operation member 30 is sandwiched between the stationary platen 20 and the rotation plate 30 can be rotated. The rotation position detection brush 62 and the power supply brush 63 installed on the circuit board 60 are inserted from the brush protrusion holes 55a and 55b. The screw 64 is screwed onto the circuit board 60 from the screwing portion 52 and fixed to the circuit board 60 by positioning so as to protrude toward the code board side.
[0022]
With the above configuration, the rotation operation member 30 includes the code plate 40 including the LED 42 a and the code portion 41, and is supported between the fixed plate 20 on which the release button is mounted and the base 50 so as to be rotatable. When the rotation operation member 30 is rotated, the LED 42a fixed to the rotation operation member 30 moves behind the display symbols 21a to 21f. At the same time, the cord portion 41 of the cord plate 40 fixed to the back surface of the rotation operation member 30 comes into sliding contact with the rotation position detection brush 62 and the power supply brush 63 disposed on the circuit board 60. When the pressing operation portion 11 of the release button 10 is pressed, the shaft portion 12 of the release button 10 comes into contact with the switch device 61 installed on the circuit board 60, and the photometry / ranging circuit and the release circuit are turned on.
[0023]
The click stop mechanism composed of the click spring 58, the click ball storage hole 57, the click ball 56, and the click hole 34 has the LED 42a fixed to the rotation operation member when the rotation operation member is rotated, and the respective display symbols 21a to 21f. It is formed to click stop on the back. When the LED 42a clicks on the back of the selected one of the display symbols 21a to 21f, the rotation position detection brush 62 detects the position where the LED 42a has stopped. A control circuit in the camera detects a signal from the rotational position detection brush 62 and causes the corresponding LED 42 a to emit light via the power supply brush 63.
[0024]
The illumination light emitted from the LED 42a passes through the light transmitting hole 33 of the rotation operation member 30 and the openings 22a to 22f of the stationary platen 20, and illuminates only one selected display symbol 21a to 21f from the back. Since the display symbols 21a to 21f of the display board 21 are made of a light-transmitting material, the illumination light is transmitted. For this reason, the display symbols 21a to 21f can be lit and displayed by illumination from the back.
[0025]
Since the LED 42a is fixed to the rotation operation member 30, by rotating the rotation operation member 30, the LED 42a can be moved to the back of all the display symbols 21a to 21f. For this reason, it becomes possible to illuminate all the display symbols 21a to 21f with a single LED 42a. In addition, by using the LED 42a that develops a plurality of colors by itself, the color of the illumination light can be changed according to the display symbols 21a to 21f to be selected, and the distinguishability and visibility are improved.
[0026]
In the above embodiment, the illuminated display dial device of the present invention is applied to a camera. However, the present invention is not limited to this embodiment and can be used for other devices using a dial mechanism. . In the above embodiment, the release button switch device is applied to the push button switch device and the LED is applied to the light emitting member. However, the present invention is not limited to this.
[0027]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain a display dial device with illumination in which the configuration leading to cost reduction is simplified.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an embodiment of a display dial device with illumination according to the present invention.
2 is a cross-sectional view taken along the line II-II of FIG. 1 in an assembled state.
3 is a part of a sectional view taken along line III-III in FIG. 1 in an assembled state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Release button 11 Press operation part 12 Shaft part 13 Locking claw 13a Claw part 14 Compression spring 20 Fixing board 21 Display board 21a-21f Pictogram 22 Perforated board 22a-22f Opening part 23 Cylindrical body 24 Bottom part 25 Shaft hole 26 Insertion Hole 27 Screw 30 Rotation operation member 31 Bottom part 32 Opening 33 Light transmission hole 34 Click hole 40 Code board 41 Code part 42a LED (light emitting member)
50 Pedestal 51 Lid 52 Screwing 53 Shaft Hole 54 Insertion Hole 55 Brush Protrusion Hole (55a, 55b)
56 Click Ball 57 Click Ball Storage Hole 58 Click Spring 59 Screw 60 Circuit Board 61 Switch Device 62 Rotation Position Detection Brush 63 Power Supply Brush 64 Screw

Claims (8)

Fixed plate;
A rotation operation member supported so as to be rotatable with respect to the fixed platen;
A plurality of display symbols formed of a light-transmitting material and positioned on the same circumference around the rotation center of the rotation operation member; and fixed on the rotation operation member; A single light-emitting member that selectively illuminates a plurality of display symbols on the fixed plate from the back according to the rotational position;
A display dial device with illumination. 2. The illuminated display dial device according to claim 1, wherein the fixed platen is fixed to a pedestal fixed to the circuit board, and the rotation operation member is rotatable with respect to the fixed platen between the fixed platen and the pedestal. Supported display dial device with illumination. 3. The illuminated display dial device according to claim 1, wherein the fixed platen includes a perforated board having openings at positions corresponding to a plurality of display symbols, and display symbols located on each opening of the perforated plate. Illuminated display dial device comprising a display board depicting 4. The illuminated display dial device according to claim 1, wherein a code plate for detecting a rotational position of the rotary operation member is fixed to a rear surface of the rotary operation member. 5. 5. The illuminated display dial device according to claim 4, wherein the light emitting member is fixed at an eccentric position on the surface of the annular code plate, and the rotation operation member is transparent at a position corresponding to the light emitting member of the code plate. Illuminated display dial device with a light hole. 6. The illuminated display dial device according to claim 1, wherein the light emitting member emits illumination light of one color or a plurality of colors as a single unit. 7. The illuminated display dial device according to claim 6, wherein the light emitting member is an LED. 8. The illuminated display dial device according to claim 1, wherein a shaft hole through which the shaft portion of the push button is inserted and an insertion hole through which the locking claw is inserted are respectively drilled in the fixed platen and the base. An illuminated display dial device in which a switch device is arranged on a circuit board and a push button switch device is mounted at the center of rotation of the rotary operation member.

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