JP2007121049A - Pointer instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pointer instrument capable of reducing unbalance of illumination, while maintaining the texture of a translucent member. <P>SOLUTION: The instrument includes a pointer 4, a display board 5 having a transmission design part 51 which is a pointing object by the pointer 4, the translucent member 6 having a ridged part (display part) 62 positioned on the front side of the display board 5, a reflector 8 arranged oppositely on the back of the display board 5, and a light source 7 for illuminating the transmission design part 51 and the ridged part 62. The instrument also includes a space part S between a display board 5 domain including the transmission design part 51 and the first reflection wall part 84, a blocked part 9 between a translucent member 6 domain including the ridged part 62 and the second reflection wall part 85, and a light receiving part 63 on a display member 6 spot avoiding the blocked part 9. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a pointer-type instrument mounted on various vehicles such as motorcycles and automobiles.

  As a pointer-type instrument mounted on various vehicles, a pointer is attached to the tip of the rotating shaft of the instrument body, and a display board having a transparent design part composed of scales, letters, marks, etc. is placed behind this pointer, and the transparent design A device that displays a measured value by a pointer that rotates on a part is known. In the display board, a ground color part that forms the background of this transparent design part together with the transparent design part is formed, but these transparent design part and ground color part are usually formed by printing on the substrate, For example, a pointer-type instrument described in Patent Document 1 is known as a countermeasure against such a situation.

This pointer type instrument is formed by forming a part of the transmissive design part by a translucent member (three-dimensional modeled object) different from the display board, and using a part of the transmissive design part as a through-hole, The raised design part (display part) corresponding to the through hole is provided, and the transparent design part is expressed by an actual three-dimensional object by allowing the raised part of the light transmitting member to pass through the through hole from behind the display plate. The transmissive design portion including such a raised portion is configured to be transmitted and illuminated through a light source disposed behind the display plate and a reflector disposed opposite to the back surface of the display plate via an optical path. .
JP 2003-106873 A

By the way, in the case of the pointer-type instrument described in Patent Document 1, since the colored transmission layer is attached to the surface of the raised portion of the translucent member, the transmission design portion formed of a semi-transparent ink printing layer when the light source is turned on. On the other hand, the tendency for the brightness of the raised portion to become too high is suppressed, but when the colored transparent layer on the surface of the raised portion is abolished to ensure the transparent texture of the translucent member, the brightness of the raised portion with respect to the transparent design portion In order to cope with this point, it is conceivable to provide a light control layer on the light incident side of the translucent member. However, the addition of the light control layer leads to an increase in cost. There's a problem.
Therefore, the main object of the present invention is to provide a pointer-type instrument that can reduce the unbalance of illumination while maintaining the texture of the translucent member.

  In order to achieve the above object, the present invention provides a pointer, a display plate having a transparent design portion to be indicated by the pointer, a translucent member having a display portion located on the front side of the display plate, and the display A reflector disposed opposite to the back surface of the plate, and a light source that illuminates the transmissive design portion and the display portion via an optical path formed between the reflector and the display plate, and at least the transmissive portion A space portion communicating with the light path is provided between the display plate region including a design portion and the reflector, and the light transmissive member is provided between the light transmissive member region including at least the display portion and the reflector. The display member avoids the blocking portion by providing a blocking portion that closes the light path or the space portion by bringing both the reflector and the reflector into direct contact with each other via a predetermined inclusion. The light path or the location It characterized in that a light receiving portion for receiving light from said light source through between unit.

  The present invention is also characterized in that when the light source is turned off, the reflector region corresponding to the closed portion is seen through the display portion.

  Moreover, the present invention is characterized in that the light receiving part is located in the light path or the space part.

  Moreover, this invention has the 1st translucent part in which the said translucent member is located behind the said display board, and the 2nd translucent part which is located ahead of the said display board and comprises the said display part. The light receiving portion is provided in the first light transmitting portion.

  In the invention, it is preferable that the translucent member is formed on a part of a support member that supports the display panel.

  According to the present invention, it is possible to provide a pointer-type meter that can achieve the initial purpose and can reduce the illumination imbalance while maintaining the texture of the translucent member.

  Embodiments of a pointer-type display device according to the present invention will be described below with reference to the accompanying drawings. 1 to 4 show a first embodiment of the present invention, FIG. 1 is a front view of a pointer-type instrument, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. FIG. 4 is an exploded perspective view showing the main part of the display plate and the translucent member. FIG.

  1 and 2, the pointer-type instrument according to this embodiment is attached to a circuit board 1, an instrument body 3 that is conductively attached to the circuit board 1 and has a rotary shaft 2 extending forward, and a tip end side of the rotary shaft 2. A pointer 4, a display plate 5 disposed between the pointer 4 and the circuit board 1, a translucent member 6 disposed behind the display plate 5, and a circuit positioned around the rotary shaft 2. The light source 7 is disposed at the front side position of the substrate 1, and the reflector 8 is disposed between the display board 5 and the circuit board 1. 2 shows only the configuration of the instrument portion located in the center in FIG. 1, but the other instrument portions in FIG. 1 have the same configuration, so that the instrument portion shown in FIG. Will be described as a representative structure.

  The circuit board 1 is made of a hard circuit board in which a wiring pattern (not shown) is provided on a glass epoxy base material, for example, and driving means (not shown) for driving / controlling the instrument body 3 or a resistor, a capacitor, etc. The various circuit components (not shown) are conductively connected to the wiring pattern.

  The instrument body 3 is composed of a movable magnet instrument or a stepping motor. In this example, the instrument body 3 is mounted behind the circuit board 1 so that the rotating shaft 2 penetrates the shaft hole formed in the circuit board 1, and soldering or the like. Although appropriately connected to the wiring pattern (the driving means) by a conduction means, the instrument body 3 may be disposed on the front side of the circuit board 1.

  The pointer 4 is made of a light-transmitting synthetic resin. As shown in detail in FIG. 2, the pointer 4 is made of a light-transmitting synthetic resin and an instruction member 41 for indicating a transmissive design portion, which will be described later, and the light-transmitting synthetic resin. The base 42 is arranged between the member 41 and the rotary shaft 2, and the cover 42 is made of a light-shielding synthetic resin that covers the base 42 and the rotation center side required portion of the indicating member 41, and rotates through the base 42. It is connected to the tip of the shaft 2.

  The indicator member 41 has a tip end extending toward a later-described transmissive design portion of the display plate 5, and a semi-transmissive metallic color layer 44 that transmits light from the light source 7 is formed on the surface thereof. On the opposite side of the layer 44, there is formed a reflective layer 45 that reflects the light introduced through the base 42 to the metallic color layer 44 side.

  The metallic layer 44 is formed by, for example, thinly applying a paint mixed with metallic particles on the surface of the indicating member 41, and is visually recognized with a metallic color tone of, for example, silver metallic tone due to external light reflection when the light source 7 is not turned on. When the light source 7 is turned on, the light is transmitted through the gaps between the metallic particles, so that the film thickness is visually recognized with a predetermined color.

  The reflection layer 45 is formed of a hot stamp layer having a good light reflectance, for example, formed by depositing a white film on the back surface of the indicating member 41 by hot stamping.

  The base portion 42 has a boss portion that is press-fitted and fixed to the rotating shaft 2 and a light supply portion that supplies light from the light source 7 to the indicating member 41, and the cover portion 43 has, for example, a black or silver metallic color tone. is doing.

  The display board 5 is arranged to have an arcuate array shape along the rotation trajectory of the pointer 4, and a transparent design portion 51 that is an instruction target of the pointer 4 and a ground color portion 52 that is a background of the transparent design portion 51. And have.

  In the case of this example, the transparent design portion 51 is composed of letters or numbers, and the ground color portion 52 forms a background of the transparent design portion 51.

  An opening hole (opening) 53 that opens the display plate 5 itself is formed outside the transmissive design portion 51, and a protruding portion of the translucent member 6 described later is inserted into the opening hole 53. The hole 53 corresponds to the outer diameter shape of the raised portion.

  The ground color portion 52 forms the background of the transmissive design portion 51 and is formed except for the opening hole 53 and the transmissive design portion 51 region. The transparent design portion 51 and the ground color portion 52 are formed by screen-printing the first and second print layers L1 and L2 on a light-transmitting substrate 5a that is a base material (base material) of the display board 5. The opening hole 53 is formed by means such as punching after the printing of each printing layer L1, L2.

  That is, the first print layer L1 is printed and formed on substantially the entire surface of the substrate 5a made of a transparent synthetic resin. The first printing layer L1 is made of, for example, a white translucent printing paint. The first printing layer L1 itself is visually recognized as white by external light reflection when the light source 7 is not turned on, and transmits the light when the light source 7 is turned on. However, it has translucency to emit light with a predetermined color.

  On the front side of the first print layer L1, a second print layer L2 is formed by printing except for the transparent design portion 51 and the opening hole 53. The second print layer L2 is made of, for example, black and has a light-shielding print paint, and the transparent design portion 51 is formed by an area where the first print layer L1 is exposed without forming the second print layer L2. The

  Therefore, the transmissive design portion 51 serving as the exposed region of the first printed layer L2 is visually recognized as white when the light source 7 is not lit, and is transmitted through the light when the light source 7 is lit and is visually recognized in a predetermined color.

  The display plate 5 is provided with a through hole 54 at a position corresponding to the rotary shaft 2, and the rotary shaft 2 and the pointer 4 can be connected through the through hole 54.

  The translucent member 6 is made of a transparent or translucent synthetic resin (light guide member) and has a substantially band shape along the rotation path of the pointer 4 and is mounted behind the display board 5.

  As shown in FIGS. 3 and 4, the translucent member 6 includes a base portion (first translucent portion) 61 that extends in a strip shape along the back surface of the display plate 5, and extends beyond the display plate 5 from the base portion 61. By projecting, the projecting end side has a raised portion (display portion and second light transmitting portion) 62 positioned on the front side of the display board 5, and this raised portion 62 together with the transparent design portion 51 is a pointer 4. A plurality of outer diameter shapes corresponding to the inner diameter shape of the opening hole 53 of the display panel 5 are formed and inserted into the opening hole 53.

  The translucent member 6 formed in this way is supported by placing the bottom surface of the base portion 61 on a second reflecting wall portion (blocking portion), which will be described later, of the reflector 8, and an opening hole 53 from the front thereof. The display board 5 is overlaid on the translucent member 6 so as to be fitted into the raised portion 62 (see FIG. 4). As a result, the raised portion 62 protrudes to the front surface side of the display plate 5 through the opening hole 53, and forms a protruding scale that is an instruction target of the pointer 4 together with the transparent design portion 51. In addition, an outer wall surface that does not come into contact with the second reflecting wall portion in the base portion 61 faces a space portion to be described later, and forms a light receiving portion 63 that takes light from the light source 7 into the translucent member 6.

  The light source 7 is composed of, for example, a chip-type light emitting diode disposed on the front side of the circuit board 1, and a plurality of light sources 7 are disposed corresponding to the pointer 4 and the display board 5.

  These light sources 7 are concentrated in the front side region of the circuit board 1 located near the rotation axis 2, and a light source (light source for pointers) 7 that illuminates the pointer 4 is close to the shaft hole of the circuit board 1 and displayed on the outside thereof. A light source (light source for display plate) 7 that illuminates the plate 5 is disposed. A plurality of pointer light sources 7 are arranged in accordance with the rotation operation of the base 42 of the pointer 4, and the display plate light source 7 is centered on the rotation shaft 2 so as to face a first reflecting wall described later of the reflector 8. It is arranged in plural on the concentric circle.

  The reflector 8 is an injection-molded body formed in a case shape with a white synthetic resin, and has an inner diameter corresponding to the through hole 54 of the display plate 5 as shown in FIG. A cylindrical portion 81 surrounding the pointer light source 7, a first reflecting wall 82 extending obliquely forward from the outer wall portion of the cylindrical portion 81 so as to face the display panel light source 7, and an air layer are separated from each other. A second reflecting wall 83 facing the back surface of the display panel 5 is provided.

  The cylindrical portion 81 functions as a light guide tube that guides light from the pointer light source 7 to the pointer 4 side, and the first reflecting wall 82 focuses light from the display panel light source 7 around the rotation axis 2. It functions as a reflector that reflects radially toward the outer periphery. Furthermore, the second reflecting wall 83 faces the display plate 5 with a light passage LP serving as the air layer passing the light from the light source 7 for the display plate to the transmission design portion 51 and the raised portion 62 side. The first reflecting wall portion 84 corresponding to the display plate 5 region including the transmissive design portion 51 faces the display plate 5 region including the transmissive design portion 51 across the space portion S communicating with the light path LP. On the other hand, the second reflecting wall 85 corresponding to the translucent member 6 region including the raised portion 63 is in direct contact with the bottom surface of the base 61 of the translucent member 6 and closes the light path LP or the space S. Is forming.

  In the above configuration, when the pointer light source 7 is not lit, the indication member 41 of the pointer 4, the character portion 54 of the display board 5, the first ground color portion 55, and the surface of the raised portion 62 of the display member 6 pass through external light reflection. Visible with silver metallic metallic tone.

  When the pointer light source 7 is turned on, the light is transmitted through the metallic layer 44 through the cylindrical portion 81 of the reflector 8, the base portion 42 of the pointer 4, and the indicating member 41, and the indicating member 41 is, for example, the emission color of the pointer light source 7 itself. It emits red light.

  When the display panel light source 7 is not lit, the external light is visually recognized as white due to surface reflection caused by reflection on the surface of the transmissive design portion 51 made of the first printed layer L1 having a high reflectance. The ground color portion 51 formed of the high second print layer L2 is visually recognized as black. Further, a part of the external light passes through the raised portion 62 and enters the translucent member 6, and is reflected by the surface of the second reflecting wall portion 85, thereby having the same white color as the transmissive design portion 51. Visible.

  When the light source 7 for the display panel is turned on, the light propagates through the light path LP and the space S through the first and second reflecting walls 82 and 83 of the reflector 8, and the transmissive design portion 51 (first printing layer L1). ) Is transmitted and illuminated in white, which is the emission color of the display panel light source 7 itself, but the ground color portion 51 is blocked from transmitting light by the second print layer L2, and therefore does not emit light by transmitted light. Further, part of the light propagating through the light path LP and the space S enters the light transmissive member 6 through the light receiving part 63 and reaches the tip side of the raised part 62 through the second reflecting wall part 85 and the like. The raised portion 62 is visually recognized as white.

  As described above, according to the present embodiment, the pointer 4, the display plate 5 having the transparent design portion 51 to be instructed by the pointer 4, and the raised portion (display portion) 62 positioned on the front side of the display plate 5. A translucent member 6, a reflector 8 disposed opposite to the back surface of the display plate 5, and a light-transmitting design portion 51 and a bump through an optical path LP formed between the reflector 8 and the display plate 5. A light source 7 that illuminates the part 62, and a space S that communicates with the light path LP is provided between the display panel 5 region including at least the transmission design part 51 and the first reflecting wall 84 of the reflector 8. By bringing the translucent member 6 and the second reflective wall 85 into direct contact between the translucent member 6 region including at least the raised portion 62 and the second reflective wall 85 of the reflector 8, the light path LP or A blocking portion 9 that closes the space portion S is provided, and the light path L is provided in six display members that avoid the blocking portion 9. Alternatively, by providing the light receiving unit 63 that receives the light from the light source 7 through the space S, it is possible to reduce the illumination imbalance while maintaining the texture of the translucent member 6 and without increasing the cost. it can.

  That is, a space portion S communicating with the optical path LP is provided between the display panel 5 region including the transmissive design portion 51 and the first reflection wall portion 84 of the reflector 8 so that the transmissive design portion 51 is passed through. Between the light-transmitting member 6 region including the raised portion 62 and the second reflecting wall portion 85 of the reflector 8 that is illuminated, a blocking portion 9 that blocks the light path LP or the space S is provided and the blocking portion 9 is By providing the light receiving portion 63 that receives light from the light source 7 through the light path LP or the space portion S at the avoiding display member 6 locations, it is possible to restrict light reaching the light transmissive member 6 where the luminance tends to increase. The imbalance of illumination can be reduced without increasing the cost of maintaining the texture of the light member 6 and providing a light control layer on the special light transmissive member 6.

  In the present embodiment, the second reflecting wall portion 85 region of the reflector 8 corresponding to the blocking portion 9 is seen through the raised portion 62, so that the second reflecting wall portion 85 itself is used as the background of the raised portion 62 ( Therefore, it is not necessary to add a dedicated film (layer) or member, and cost reduction can be achieved. In addition, since the second reflecting wall 85 and the translucent member 6 come into contact with each other without any gap by the blocking portion 9, it becomes easy for outside light to reach the surface of the second reflecting wall 85. Can be prevented from appearing dark.

  In the present embodiment, the light receiving part 63 is positioned in the light path LP or the space part S, so that the light in the light path LP or the space part S can be taken in efficiently.

  In the present embodiment, the translucent member 6 has a base portion (first translucent portion) 61 located behind the display plate 5 and a first portion located on the front side of the display plate 5 by extending forward from the base portion 61. It is also possible to efficiently take in the light in the light path LP or the space portion S by providing the light-receiving portion 63 on the base portion 61.

  In the present embodiment, the light path LP or the space portion S is an air layer. However, the light path LP or the space portion S itself is formed of a transparent material as long as the light path LP or the space portion S functions as a portion that transmits, propagates, or guides light. May be. In this case, the blocking portion 9 is a portion where the transparent material forming the light path LP or the space portion S itself does not exist, and the translucent member 6 and the second reflecting wall portion 85 are in contact with each other.

  Moreover, in this embodiment, although the example which utilizes the translucent member 6 as a scale part used as the indication object of the pointer | guide 4 was shown, if the display part located in the front side of the display board 5 is located, it is arbitrary. For example, it may be a decorative member surrounding the operating range of the pointer 4.

  Further, in the present embodiment, the outer diameter shape of the raised portion 62 is made to correspond to the inner diameter shape of the opening hole 53, whereby the gap between the opening portion H and the raised portion 62 can be reduced, and display quality can be improved. it can.

  FIG. 5 shows a second embodiment of the present invention. In this embodiment, the translucent member 6 is formed of a substantially ring body, has a scale portion formed of a protruding portion (display portion) 64, and a protruding portion (display portion). ) 64 is covered with a light-shielding cover 65, and the whole is placed on the surface of the base material 5 constituting the display panel 5.

  And the obstruction | occlusion part 9 is made by making the bottom part of the translucent member 6 and the 2nd display member 6 of the reflector 8 contact with the base material (light-transmissive member) 5a of the display board 5 as a predetermined inclusion. Is forming.

  In this case, the light receiving portion 63 is a portion that avoids the blocking portion 9 and is formed on the front side of the base material 5a of the display plate 5, and a light transmitting member is obtained by light incident on the light receiving portion 63 through the base material 5a. 6 is a structure which light-emits.

  According to the present embodiment configured as described above, the same effect as that of the first embodiment can be expected.

  FIG. 6 shows a third embodiment of the present invention, and the translucent member 6 of this example is basically the same configuration as the translucent member 6 of the second embodiment, but the position of the light receiving portion 63. Is different.

  That is, the translucent member 6 of the present example is formed by continuously forming a light receiving protrusion (first light transmitting portion) 66 where the light transmitting member 6 is located behind the display plate 5 and the light receiving protrusion 67. 5 and a main body part (second translucent part) 67, and a projecting part (display part) 64 is partially formed on the main body part 68.

  Even in the present embodiment configured as described above, the same effects as those in the first and second embodiments can be expected. In particular, in the case of this example, the display panel 5 is behind the display board 5 as compared with the second embodiment. By providing the light receiving portion 63 in the light receiving projection 66 located, the light in the light path LP or the space S is effective.

  In the first and second embodiments, the base material 5a of the display panel 5 is exemplified as the predetermined inclusion, but other members such as a diffusion member and a light control member may be used.

  FIG. 7 shows a fourth embodiment of the present invention. In this example, the translucent member 6 is formed on a part of the support member 10 that supports the display panel 5 from behind.

  That is, the support member 10 is made of a light-transmitting synthetic resin material and is placed on the reflector 8, and the support member 10 has a light-transmitting member (similar to the first embodiment) (Translucent portion) 6 is formed.

According to this embodiment configured as described above, the same effects as those of the first to third embodiments can be expected. Particularly, in the case of this example, the translucent member 6 is a part of the support member 10, Reduction of the number of parts and cost reduction can be achieved. In this case, the light receiving unit 63 corresponds to the entire region of the support member 10 corresponding to the light path LP or the space S.

The front view which shows the pointer type meter by the 1st Embodiment of this invention. AA sectional drawing of FIG. The principal part sectional drawing which expands and shows the translucent member vicinity in FIG. The disassembled perspective view which shows the principal part of a display board and a translucent member in the same embodiment. The principal part sectional view showing the 2nd embodiment of the present invention. Sectional drawing which shows the principal part which shows the 3rd Embodiment of this invention. The principal part sectional view showing the 4th embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Circuit board 2 Rotating shaft 3 Instrument main body 4 Pointer 5 Display board 5a Board | substrate 6 Translucent member 7 Light source 8 Reflector 9 Closure part 10 Support member 41 Pointing member 42 Base part 43 Cover part 44 Metallic color layer 45 Reflective layer 51 Transparent design part 52 Ground color part 53 Opening hole (opening part)
54 Through-hole 61 Base (first translucent part)
62 Raised part (display part and second translucent part)
63 Light-receiving part 64 Projection part (display part)
65 Light-shielding cover 66 Light-receiving projection (first translucent part)
67 Main body (second translucent part)
81 cylindrical portion 82 first reflecting wall 83 second reflecting wall 84 first reflecting wall portion 85 second reflecting wall portion L1 first printed layer L2 second printed layer LP light path

Claims (5)

Guidelines,
A display board having a transparent design portion to be directed by this pointer;
A translucent member having a display portion located on the front side of the display plate;
A reflector disposed opposite to the back surface of the display board;
A light source that illuminates the transmissive design portion and the display portion through an optical path formed between the reflector and the display plate;
Providing a space portion communicating with the light path between the display plate region including at least the transmission design portion and the reflector;
By bringing both the translucent member and the reflector into direct contact between the translucent member region including at least the display section and the reflector, or by bringing the both into contact via a predetermined inclusion Providing a blocking portion that blocks the light path or the space,
A pointer-type instrument characterized in that a light-receiving part that receives light from the light source through the light path or the space part is provided at the display member location avoiding the blocking part. The pointer-type instrument according to claim 1, wherein when the light source is turned off, the reflector region corresponding to the closed portion is seen through the display portion. The pointer-type meter according to claim 1, wherein the light receiving portion is located in the light path or the space portion. The translucent member has a first translucent part located behind the display plate, and a second translucent part located in front of the display plate and constituting the display unit, the first translucent part A pointer-type instrument characterized in that the light receiving part is provided in a light transmitting part. 2. The pointer-type meter according to claim 1, wherein the translucent member is formed on a part of a support member that supports the display panel.

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