JP2017049176A - Luminous pointer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminous pointer capable of preventing leakage of a light.SOLUTION: A luminous pointer comprises: a translucent member 1 comprising a rotary base part 12 with a light reception part 121 for receiving a light emitted from a light source and a longitudinal indication unit 11 which is illuminated by the light from the light reception part 121; and a cover member 2 comprising a first cover part 21 for covering the surrounding of the rotary base part 12 and having a first opening 211 through which a rear back side of the rotary base part 12 is opened, and a second cover part 22 comprising a see-through window 222 through which a front face of the indication unit 11 is viewed, a pair of side wall parts 223 for covering both side faces of the indication unit 11, and a second opening part 221 for opening a space between these side wall parts 223 to the back face side, and covering the indication unit 11. The cover member 2 comprises a light block rib for blocking the light which leaks to the rear face side of the indication unit 11 out of the light which goes to the indication unit 11 direction from the rotary base part 12 on a position where the first cover part 21 and the second cover part 22 are coupled.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a light emission indicator that is used, for example, in a vehicular instrument and instructs a running state or a driving state of a vehicle, a ship, an agricultural machine, or the like.

  As a conventional light emission guideline, for example, the one described in Patent Document 1 is known. The light emitting pointer includes a pointer main body having a rotation base portion and an instruction portion made of a translucent member, a cover member made of a light shielding member that continuously covers the instruction portion and the rotation base portion, and a back surface of the cover portion. The cover member has a slit that exposes the upper surface of the indicator in a straight line on the front surface corresponding to the indicator, and the indicator that emits light from the slit is visually recognized.

  The shielding member is housed and fixed on the back surface side of the cover portion by a method such as hook engagement, and suppresses light leakage by covering the back surface of the cover portion.

JP 2010-25567 A

  However, in the light emitting pointer described in Patent Document 1, the shielding member portion covering the rotation base portion of the pointer main body is hook-engaged with the holding portion of the cover member, but the back surface side of the indicating portion is not covered with the shielding member. In the case of a pointer, there is a concern that light leaks from the gap between the cover member and the rotating base, and in particular, the light leaked from the periphery of the joint between the rotating base and the indicating part travels through the back of the indicating part and the tip shines. There was a point.

  The present invention has been made in view of these points, and an object of the present invention is to provide a light emission indicator that prevents light leakage.

In order to achieve the above-mentioned object, the present invention makes it possible to visually recognize the first cover portion having a first opening portion that covers the periphery of the rotation base portion and opens on the rear side of the rotation base portion, and the front surface of the indication portion. A longitudinal second cover portion that covers the fluoroscopic window and a pair of side walls that cover both side surfaces of the pointing unit and a second opening that opens between the side walls on the back side; A cover member having
In the light emission indicator, the cover member includes a portion of the indicator portion of the light that travels from the rotation base portion toward the indicator portion at a location where the first cover portion and the second cover portion are connected. It has a light shielding part for blocking light leaking to the back side.

  Moreover, the said light-shielding part protrudes toward the centerline of the said instruction | indication part.

  According to the present invention, it is possible to provide a light emission guide that prevents light leakage.

Sectional drawing of the light emission pointer | guide in one Embodiment of this invention. FIG. The perspective view which looked at the light emission pointer same as the above from the back side. AA sectional drawing of the light emission pointer same as the above. BB sectional drawing of the light emission guideline same as the above.

  Embodiments of the present invention applied to, for example, a vehicle instrument device will be described below with reference to the accompanying drawings. 1 to 5, a light emitting pointer P is connected to a pointer shaft 5 of an instrument body 4 made of, for example, a stepping motor, and indicates an indicator portion (not shown) of the display board 7. The cover member 2 is mainly composed of.

  As shown in FIG. 2, the translucent member 1 is made of a light-transmitting resin material, and is formed continuously with a longitudinal indicator 11 having a white hot stamp printed on its back surface and the indicator 11. The rotation base 12 is attached to the cover member 2 in the vicinity of the rotation center of the translucent member 1.

  As shown in FIGS. 1 and 2, the translucent member 1 includes a boss portion 13 attached to the pointer shaft 5 of the meter body 4 and a pedestal portion 14 formed of a plane extending in a direction orthogonal to the pointer shaft 5. And a weight arrangement portion (not shown) for arranging a weight A made of metal.

  The indicator 11 has an inverted trapezoidal cross section and is formed such that the upper side 11a is longer than the lower side 11b.

  The rotation base 12 includes a light receiving unit 121 for guiding light from the light source 6 that has passed through a first opening 211 (to be described later) of the cover member 2 into the rotation base 12, and light incident from the light receiving unit 121. And a reflecting portion 122 that reflects in the direction.

  The cover member 2 is made of a black resin material that is opaque, and includes a first cover portion 21 and a second cover portion 22.

  The first cover portion 21 has a first opening portion 211 that opens to the back, and covers the periphery (front surface and side surface) of the rotation base portion 12.

  The second cover portion 22 is formed in a longitudinal shape so as to cover the instruction portion 11, and a transparent window 222 that allows the front surface (viewer side) of the instruction portion 11 to be visible, and both side surfaces in the rotational direction of the translucent member 1. And a second opening portion 221 that opens between the side wall portions 223 on the back side (display panel 7 side).

  The second cover portion 22 extends in the longitudinal direction along the indicator portion 11, and a tip storage portion 224 is formed at the tip portion in the longitudinal direction so that light does not leak from the tip end of the indicator portion 11. . Moreover, it is an edge part of each side wall part 223 of the 2nd cover part 22, Comprising: It progresses to the instruction | indication part 11 direction from the rotation base 12 to the location where the 1st cover part 21 and the 2nd cover part 22 connect. Of the light, a light shielding rib 225 for blocking light leaking to the back side of the indicating unit 11 is provided.

  The inner walls of the side wall part 223 of the second cover part 22 face each other in parallel and have a storage width b up to the center line C of the instruction part 11. The light shielding rib 225 has a light shielding width a formed so as to cover the gap between the indicating portion 11 and the side wall portion 223 accommodated in the accommodating width b and the joint between the rotation base portion 12 and the indicating portion 11. . The light shielding rib 225 has a shape protruding from the inner wall of the side wall portion 223 toward the center line C.

  Next, the assembly of the pointer in the present embodiment will be described. First, the weight A is arranged so that the plate-like metal surface is along the side wall surface of the first cover portion 21 in the assembled state. The distal end of the instruction unit 11 is disposed in the distal end storage unit 224 at the distal end of the second cover unit 22, and the rotation base 12 is mounted in the first cover unit 21 so as to be tilted. The rotation base 12 is fixed to the first cover portion 21 by engaging the rotation base 12 with a hook (not shown) provided on the inner surface of the side wall of the first cover portion 21. Assembly is complete.

  Next, the traveling path of light in this embodiment will be described. The light emitted from the light source 6 and incident from the light receiving unit 121 into the rotation base 12 is reflected by the reflecting unit 122 in the direction of the indicating unit 11, and the reflected light is further reflected by the side wall unit 223, repeatedly performing irregular reflection, The indicator 11 is guided, and the pointer is illuminated so that part of the light reaches the viewer side from the transparent window 222. At this time, the light that does not enter the rotation base 12 from the light receiving unit 121 and travels in the direction of the pointing unit 11 is blocked by the light shielding rib 225, and the light that reaches the tip of the pointing unit 11 is attenuated.

  In this way, the translucent member 1 having the rotating base 12 having the light receiving portion 121 that receives the light from the light source 6, and the longitudinal indicating portion 11 that is brilliant by the light from the light receiving portion 121, and the rotating base 12. A first cover portion 21 having a first opening 211 that opens on the back side of the rotation base 12, a transparent window 222 that allows the front of the indication portion 11 to be visible, and both sides of the indication portion 11. A cover member 2 having a pair of side wall portions 223 and a long second cover portion 22 that has a second opening portion 221 that opens between the side wall portions 223 on the back side and covers the indication portion 11. In the light emission pointer P having the following, the cover member 2 is the indicator portion of the light traveling from the rotation base portion 12 toward the indicator portion 11 at the location where the first cover portion 21 and the second cover portion 22 are connected. Light leaking to the back side of 11 By having a light-shielding rib 225 because, even if no shielding member on the back side of the indicator 11, the light source 6 can be prevented that the light leaks behind the instruction unit 11.

  Further, since the light shielding rib 225 protrudes toward the center line C of the instruction unit 11, the light leakage from the connecting portion between the first cover portion 21 and the second cover portion 22 where light leakage most occurs is prevented. can do.

DESCRIPTION OF SYMBOLS 1 Translucent member 2 Cover member 4 Instrument main body 5 Pointer axis 6 Light source 7 Display board 11 Instruction part 12 Rotation base part 21 First cover part 22 Second cover part 121 Light receiving part 122 Reflecting part 211 First opening part 221 First 2 opening portion 222 transparent window 223 side wall portion 224 tip storage portion 225 light shielding rib (light shielding portion)

Claims (2)

A translucent member having a rotating base having a light receiving portion for receiving light from a light source, and a longitudinal indicating portion shining by the light from the light receiving portion;
A first cover portion that covers the periphery of the rotation base portion and has a first opening that opens on the back side of the rotation base portion, a transparent window that allows the front surface of the indication portion to be visible, and covers both sides of the indication portion A cover member having a pair of side wall portions and a second opening portion having a second opening opening between the side wall portions on the back surface side and covering the indicating portion;
In the light emission guide with
The cover member blocks light leaking toward the back side of the indicator from the light traveling in the direction of the indicator from the rotation base at a location where the first cover and the second cover are connected. A light-emitting pointer characterized by having a light-shielding portion for the purpose. The light-emitting pointer according to claim 1, wherein the light-shielding part protrudes toward a center line of the instruction part.

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