JP2012177711A - Indicating instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indicating instrument which is capable of vividly transparently illuminating an index part even on a dial having a transmission light amount adjustment layer.SOLUTION: The indicating instrument includes: a transparently printed layer 23 provided separately from a region of an index part 4 provided on a dial 5 and capable of being transparently illuminated; a first transmission light amount adjustment layer 24 which is provided on the front side of the transparently printed layer 23 and comprises a printed layer with gradation which allows the transparently printed layer 23 to be transparently illuminated so that the amount of light transmitted through the dial 5 is gradually varied with a prescribed region as the reference; and a second transmission light amount adjustment layer 24 which is provided on the rear side of the dial 5 so as to correspond to at least the first transmission light amount adjustment layer 24 and allows the transparently printed layer 23 to be transparently illuminated so that the amount of light transmitted through the dial 5 is gradually varied with a prescribed region as the reference.

Description

  The present invention relates to an indicating instrument that transmits and illuminates a display board with light rays emitted from a light source.

  2. Description of the Related Art Conventionally, instruments that indicate operating conditions such as speedometers, tachometers, and fuel gauges are provided as instrument devices for special vehicles such as construction machines, ships, automobiles, motorcycles, and the like.

  For example, Patent Literature 1 and Patent Literature 2 are known as conventional indicator instruments that transmit and illuminate a display board with light rays emitted from a light source.

  A conventional indicator instrument is arranged corresponding to a pointer mounted on the tip side of a rotating shaft provided in the instrument body, and corresponding to a position where the pointer is instructed to rotate, and a light-shielding layer portion on a translucent substrate. An indicator instrument comprising: a display plate formed with a transmission layer portion and having an indicator portion formed thereon; and a light source provided on the back side of the display plate. A transparent printing layer is provided separately from the area of the indicator portion that can be transmissively illuminated, and the amount of light that illuminates the display plate is gradually changed in the area of the transmissive printing layer with reference to a predetermined area. Further, the display panel is provided on the front side of a transmitted light amount adjustment layer made of a gradation-based printing layer that enables transmission illumination.

JP 2003-222538 A JP 2003-254790 A

  In the indicator instruments of Patent Document 1 and Patent Document 2 described above, the light intensity is gradually adjusted from the inner side toward the outer side by the transmitted light amount adjustment layer formed by the gradation-based printing layer applied to the front side. For this reason, since the indicator portion may become inconspicuous, the indicator instrument does not have a good appearance, and there remains room for improvement in terms of display quality.

  Accordingly, the present invention focuses on the above-described problems, and an object of the present invention is to provide an indicating instrument that can clearly transmit and illuminate an indicator portion even with a display panel having a transmitted light amount adjustment layer. .

In order to solve the above-described problems, the present invention corresponds to claim 1 corresponding to the pointer 3 mounted on the distal end side of the rotary shaft 2 provided in the instrument body 1 and the position where the pointer 3 is instructed to rotate. A display board 5 provided with an indicator portion 4 provided with a light-shielding layer 14 portion and a transmission layer 4A portion on a light-transmitting substrate 13, and provided behind the display board 5. In the indicating instrument comprising the light source 8, the display board 5 is provided on the front side of the transmission printing layer 23 provided on the front side of the transmission printing layer 23 provided separately from the area of the indicator portion 4, and has a predetermined A first transmitted light amount adjusting layer 24 composed of a gradation-based print layer that enables the transmissive printed layer 23 to be transmissively illuminated so that the amount of light transmitted through the display plate 5 gradually changes with reference to a region; At least the first transmitted light amount adjustment layer on the back side 4, and a second transmitted light amount adjustment layer 25 that enables the transmissive printing layer 23 to be transmissively illuminated so that the amount of light transmitted through the display board 5 gradually changes with a predetermined region as a reference, The first transmitted light amount adjustment layer 24 is provided so that the amount of light transmitted through the display plate 5 gradually increases from the outside to the inside of the display plate 5, and the second transmitted light amount adjustment layer is provided. No. 25 is characterized in that the amount of light transmitted through the display plate 5 gradually decreases from the outside to the inside of the display plate 5 .

  With this configuration, the first transmitted light amount adjustment layer 24 including the indicator portion 4 provided on the front surface side of the display panel 5 and the gradation-based print layer provided in a place other than the indicator portion 4 region is attractive. In addition, when the display board 5 is illuminated at night or the like, the four indicator portions provided on the display board 5 can be brightly illuminated by the transmitted illumination by printing, and provided at locations other than the four indicator portions. The transmissive print layer 23 is provided so that the amount of light transmitted through the display board 5 is gradually changed by the first transmitted light amount adjustment layer 24 formed of a gradation printed layer. The second transparent part is arranged so that the amount of light transmitted through the transparent printing layer 23 applied on the surface of the display board 5 is gradually changed on the rear surface of the corresponding display board 5 with a predetermined area as a reference. By applying the light amount adjusting layer 25, the transmitted illumination brightness in the peripheral area of the indicator portion 4 can be reduced, whereby the indicator portion 4 can be clearly transmitted and illuminated, and the display panel 5 having a good appearance can be illuminated. Can have an effect. Further, the amount of light emitted from the transmissive print layer 23 can be arbitrarily set by applying the second transmitted light amount adjustment layer 25 regardless of the degree of shading of the first transmitted light amount adjustment layer 24 due to gradation as the transmitting region. Since it is transmitted through a gradation pattern made up of the first transmitted light amount adjustment layer 24, the light is emitted as a silhouette by the irradiation light from the light source 8 disposed behind the display panel 5. Unevenness due to illumination can be reduced.

  Further, by configuring in this way, the four indicator portions provided on the display board 5 can be brightly illuminated by the transmitted illumination by printing, and the transmitted illumination luminance in the peripheral area of the indicator portion 4 is averaged. Accordingly, the indicator portion 4 can be clearly transmitted and illuminated, and the illumination effect of the display panel 5 having a good appearance can be obtained.

  According to a second aspect of the present invention, in the indicating instrument according to the first aspect, a transmission diffusion printing layer 26 is provided between the substrate 13 and the second transmission light amount adjustment layer 25.

  With this configuration, by providing the transmission diffusion printing layer 26 on the front side of the second transmitted light amount adjustment layer 25, the contour portion of the second transmitted light amount adjustment layer 25 that is likely to be generated by the irradiation light from the light source 8. The transmission diffusion printing layer 26 can make it possible for the shadow that becomes the boundary due to the above to appear on the surface side of the display board 5, thereby reducing unevenness due to the transmission illumination of the entire display board 5.

Further, in claim 3 , in the indicating instrument according to claim 1 or 2, the outline of the indicator portion 4 is provided at a boundary portion between the indicator portion 4 and the first transmitted light amount adjustment layer 24. It is characterized in that an edge portion 14A made of a light shielding layer for clarifying the boundary portion is given to the portion.

  By configuring in this way, the indicator portion 4 can partition the boundary portion with the first transmitted light amount adjustment layer 24 by the border portion 14A made of a light shielding layer, and the contour of the indicator portion 4 appears clearly. be able to.

Further, in claim 4, in indicating instrument according to any one of claims 1 to 3, wherein the transparent printing layer and the transmissive illumination color of the permeable layer provided on the indicator unit 4 (semipermeable display layer 4A) The transmission illumination color by 23 is formed in a different color.

  With this configuration, the four indicator portions on the display board 5 are brightly illuminated by the transmitted illumination, and overlap with the first transmitted light amount adjustment layer 24 composed of the illumination color of the indicator portion 4 and the gradation printed layer. Since the transmitted illumination color from the transparent print layer 23 is different from each other and appears to be raised, it is possible to bring about the illumination effect of the display panel that is vivid and good in appearance.

  In the indicator instrument according to the present invention, the indicator portion 4 provided on the surface side of the display board 5 and the first transmitted light amount adjustment layer 24 composed of a gradation printed layer provided in a place other than the indicator portion 4 region are attractive. In addition, when the display board 5 is illuminated, such as at night, the four indicator portions provided on the display board 5 can be brightly illuminated by transmission illumination by printing. Further, the 23 portions of the transmissive printing layer provided in addition to the four indicator portions are provided so that the amount of light transmitted through the display board 5 is gradually changed by the first transmitted light amount adjustment layer 24 formed of a gradation printed layer. The amount of light transmitted through the display plate 5 is applied to the back surface of the display plate 5 corresponding to the first transmitted light amount adjustment layer 24 so that the amount of light transmitted through the display plate 5 gradually changes with reference to a predetermined region. By applying the second transmitted light amount adjustment layer 25 that enables the transmissive printing layer 23 to be transmissively illuminated, the transmissive illumination brightness in the peripheral area of the indicator portion 4 can be reduced, and thus the indicator portion 4 can be clearly transmitted and illuminated. The lighting effect of the display panel 5 with good appearance can be brought about. Further, the amount of light emitted from the transmissive print layer 23 can be arbitrarily set by applying the second transmitted light amount adjustment layer 25 regardless of the degree of shading of the first transmitted light amount adjustment layer 24 due to gradation as the transmitting region. Since it is transmitted through a gradation pattern made up of the first transmitted light amount adjustment layer 24, the light is emitted as a silhouette by the irradiation light from the light source 8 disposed behind the display panel 5. Unevenness due to illumination can be reduced, and the initial purpose can be achieved.

FIG. 1 is a front view showing an indicating instrument for a vehicle according to a first embodiment of the present invention. FIG. 2 is a schematic cross-sectional view showing the main part of the illumination device including the display plate in the indicator instrument which is the main part of FIG. FIG. 3 is a schematic front view showing an essential part of the display panel according to the first embodiment and an enlarged sectional view thereof. FIG. 4 is a schematic front view and an enlarged cross-sectional view showing the main part of the display panel according to the second embodiment of the present invention.

  The illumination device of the present invention will be described as an embodiment in which the illumination device is applied to a vehicle indicating instrument. Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIGS. 1 to 3 show a first embodiment of the indicating instrument of the present invention. The indicator 3 is attached to the distal end side of the rotating shaft 2 of the instrument body 1 and rotates around the rotating shaft 2, and this pointer. 3, a display board 5 provided with an indicator portion 4 made of scales, numerals, symbols, etc., which is transmitted and illuminated, and a hard circuit board made of glass epoxy resin located on the back side of the display board 5 6 and light emitting diodes 7 and 8 which are provided on the circuit board 6 and illuminate the pointer 3 and the display board 5, respectively, and the meter body 1, and light emission for illuminating the pointer 3 The area is illuminated by a cylindrical partition wall 9A provided on a synthetic resin frame 9 that divides an illumination area for illuminating the diode 7 and the display panel 8 side. An instrument body 1 that rotates the rotary shaft 2 is fixedly attached to the back of the circuit board 6.

  The pointer 3 is integrally formed of a transparent synthetic resin with an indicator 10 and a pointer base 11 fixed to the rotary shaft 2, and the pointer base 11 is covered with a pointer cap 12 made of a light-shielding synthetic resin. The instruction unit 10 receives light from the light emitting diode 7 and emits light.

  The display board 5 is composed of a flat substrate 13 made of a transparent synthetic resin, and has, for example, a white semi-transmissive display layer 4A on the surface (upper surface in the figure) at four index portions such as scales, numbers, or symbols. A light-shielding black ground color layer 14 is applied to the entire surface of the display panel 5 except for the four indicator portions.

  A plurality of light emitting diodes 7 for emitting the pointer are located inside the cylindrical partition wall 9 </ b> A and are provided around the rotating shaft 2 in a circular shape around the rotating shaft 2. A light guide 15 for guiding the guide 3 from the pointer base 11 to the indicator 11 is disposed inside the cylindrical partition wall 9A.

  A plurality of light emitting diodes 8 that transmit and illuminate the indicator portion 4 of the display board 5 are provided around the outside of the cylindrical partition wall 9 </ b> A in a circular shape, and the irradiation light from the light emitting diode 8 is used as the indicator portion of the display board 5. The light guide 16 for guiding to the side 4 is disposed, and the light guide 16 and the pointer illumination light guide 15 are integrally formed via the connecting portion 17, and the light guide 15 , 16 are supported by a light case 18 formed integrally with the frame body 9.

  A light guide 15 for pointer illumination and a light guide 16 for display board illumination are located between the display board 5 and the circuit board 6 and are made of a light-transmitting synthetic resin such as polycarbonate or acrylic. In the embodiment, a colorless and transparent material without color is used.

  In this case, in the indicator instrument composed of a speedometer located in the center, the light guide 16 applies a light receiving unit 19 that receives light from the light emitting diode 8 and a light beam received by the light receiving unit 19 to the display plate 5. A reflective surface 20 is provided so as to guide the indicator portion 4 side. The light receiving portion 19 is formed to protrude in the direction of the light emitting diode 8 only at a portion corresponding to the light emitting diode 8. The reflecting surface 20 has an inverted conical surface surrounding the rotating shaft 2, and its cross-sectional shape is formed by a plurality of inclined planes that reflect the light received by the light receiving unit 19 in the direction of the index unit 4.

  Further, the light guide 16 is formed with an irradiation portion 21 provided so that the light beam reflected by the reflection surface 20 of the light guide 16 is emitted to the light case 18. Are formed on the vertical plane.

  In addition, a reflection portion 22 is formed in the peripheral portion on the inner surface side of the light case 18, and the reflection portion 22 is curved toward the display plate 5 side. The light beam emitted from the irradiation unit 21 is configured to be reflected and diffused toward the indicator unit 4 side. By making the reflecting portion 22 into a curved surface, the reflected light can be efficiently reflected and diffused in the direction of the indicator portion 4.

  The display board 5 is provided with, for example, a blue transmissive printing layer 23 separately from the area of the indicator portion 4 provided on the display board 5 and capable of illuminating transmission. In this embodiment, the amount of light transmitted through the display board 5 gradually changes with respect to a predetermined unit area with the rotation axis 2 of the meter body 1 as a reference (the rotation center position of the pointer 3 as a reference). As described above, the first transmitted light amount adjustment layer 24 composed of a black dot print layer by gradation that enables the display board 5 to transmit illumination is applied to the front side of the transmission print layer 23.

  Similar to the indicator unit 4, the transmissive print layer 23 on the display board 5 emits light emitted from the light emitting diode 8 to the irradiation unit 21 of the light guide 15 through the light guide 15 and emits the light. The transmitted light is configured to be transmitted and illuminated by being reflected and irradiated by the reflecting portion 22 on the inner surface side of the light case 16.

  Further, on the back side of the display board 5, it is provided so as to correspond to the first transmitted light amount adjustment layer 24, and the transmissive print layer 23 so that the amount of light transmitted through the display board 5 gradually changes with a predetermined region as a reference. Is provided with a second transmitted light amount adjustment layer 25 that enables transmission illumination.

  Further, in the present embodiment, the first transmitted light amount adjustment layer 24 applied on the transmissive printing layer 23 has a light amount that passes through the substrate 13 from the inner side to the outer side of the substrate 13 (the dial plate 5). The second transmitted light amount adjustment layer 25 is provided so as to gradually increase with respect to a predetermined unit area, and the second transmitted light amount adjustment layer 25 is provided so that the amount of light transmitted through the substrate 13 gradually decreases from the inside to the outside of the substrate 13. Yes.

  In this embodiment, the scale portion constituting a part of the indicator portion 4 is located in the region of the ground color layer 14, but comprises a white semi-transmissive display layer 4 </ b> A constituting the other indicator portion 4. The numerals and symbols are provided in the region of the first transmitted light amount adjustment layer 24 composed of a black dot print layer by gradation. In this case, the ground color layer 14 is formed in order to clarify the boundary between the numerals and symbols made of the white translucent display layer 4A and the first transmitted light amount adjusting layer 24 made of the black print layer. A bordering portion 14A is provided.

  Next, the illumination method in this embodiment is demonstrated. The light beam emitted from the light emitting diode 7 for emitting the pointer is guided to the inside of the light guide 15, emitted from the upper end of the light guide 15, and enters the pointer base 11 provided on the pointer 3. The indicator 10 emits light.

  Light rays emitted from the light emitting diode 8 enter the light guide 16 upward from the light receiving portion 19 of the light guide 16, are reflected by the reflecting surface 20, and are guided in the lateral direction. The light rays are emitted, and the emitted light rays are reflected and diffused by the reflection portion 22 of the light case 18, and the translucent display layer 4 </ b> A of the indicator portion 4 is transmitted and illuminated in white. At the same time, in the region where the first transmitted light amount adjustment layer 24 composed of the black printed layer by gradation in the present embodiment is applied, the 23 transmissive printed layers provided in the region are formed by the gradation printed layer. Since the first transmission light amount adjustment layer 24 is provided so that the region that transmits the display plate 5 gradually changes, the entire display plate 5 looks three-dimensional and brings about the illumination effect of the display plate 5 with good appearance. Thus, a novel lighting device can be provided.

  In addition, since the amount of light emitted from the transmissive printing layer 23 is set as the transmission region according to the degree of shading of the first transmitted light amount adjustment layer 24 by gradation, and transmitted through the pattern by gradation, the display board 5 Even if the irradiation light from the light source 8 irradiated from behind illuminates a portion of the transmissive print layer 23 on the display board 5 partially brightly, the silhouette is adjusted by the first transmitted light amount adjustment layer 24 composed of a black print layer by gradation. Therefore, unevenness due to illumination can be reduced.

  Further, in the region where the second transmitted light amount adjustment layer 25 composed of a black print layer by gradation in this embodiment is applied, the 23 transmitted print layers provided in the region are connected to the first transmitted light amount adjustment layer 24. Since the second transmitted light amount adjustment layer 25 is provided so that the amount of light transmitted through the 23 portions of the transmissive printing layer has almost uniform brightness, the indicator portion 4 can be clearly transmitted and illuminated.

  In the present embodiment, the first transmitted light amount adjustment layer 24 applied on the transmissive printing layer 23 has a light amount that passes through the dial plate 5 from the inside to the outside of the dial plate 5 per predetermined unit area. The second transmitted light amount adjustment layer 25 is provided so that the amount of light transmitted through the dial plate 5 gradually decreases from the inside to the outside of the dial plate 5. When there is a design request that the amount of light transmitted through the display plate 5 from the outer side of the display plate 5 to the inner side of the display plate 5 gradually increases, the second transmitted light amount adjustment layer 25 is You may make it provide so that the light quantity which permeate | transmits the display board 5 may decrease gradually toward the inner side from the outer side of the display board 5. FIG.

  In addition, an edge portion 14 </ b> A made of a light shielding layer for clarifying the boundary portion is applied to the contour portion of the indicator portion 4 at the boundary portion between the indicator portion 4 and the first transmitted light amount adjustment layer 24 on the display board 5. As a result, the indicator portion 4 can partition the boundary portion with the first transmitted light amount adjustment layer 24 by the border portion 14A made of a light shielding layer, and can clearly reveal the contour of the indicator portion 4.

  In addition, the transmitted illumination color of the white translucent display layer 4A, which is a transmission layer provided in the indicator portion 4, and the blue transmitted illumination color by the transparent print layer 23 provided separately from the region of the indicator portion 4 Are formed in different colors, so that the four indicator portions on the display plate 5 are transmitted and illuminated in white, brightly lit, and the first transmitted light amount adjustment layer 24 formed of a gradation printed layer. Since the blue transmitted illumination color by the overlapping transmissive print layer 23 is different from each other and appears to float, it is possible to bring about the illumination effect of the display board 5 that is vivid and good in appearance.

  FIG. 4 shows a second embodiment of the present invention, and the same parts and equivalent parts as those of the first embodiment will be described with the same reference numerals.

  In the same figure, as in the first embodiment, the display board 5 is composed of a flat substrate 13 made of a transparent synthetic resin. On the surface (the upper surface in the figure), scales, numbers, symbols, etc. For example, a white semi-transparent display layer 4A is formed at four indicator portions, and a light-shielding black ground color layer 14 is applied to the entire surface of the display panel 5 except for the four indicator portions. The substrate 13 of the display plate 5 in this embodiment is formed of a relatively thin sheet plate made of a synthetic resin having transparency, for example, a plate thickness of 0.5 mm made of polycarbonate resin.

  Further, the display board 5 is provided with, for example, a blue transmissive print layer 23 in a manner similar to the first embodiment described above, in addition to the area of the indicator portion 4 provided on the display board 5 and capable of transmissive illumination. In addition, a predetermined point in the area of the transmissive printed layer 23, in this embodiment, the amount of light that passes through the display board 5 with the rotation axis 2 of the instrument body 1 as a reference (the rotation center position of the pointer 3 as a reference). The first transmitted light amount adjustment layer 24 composed of a black dot print layer by gradation that enables the display panel 5 to be transmissively illuminated so that gradually changes with respect to a predetermined unit area is provided on the front side of the transmissive print layer 23. It has been subjected.

  Further, on the back side of the display board 5, it is provided so as to correspond to the first transmitted light amount adjustment layer 24, and the transmissive print layer 23 so that the amount of light transmitted through the display board 5 gradually changes with a predetermined region as a reference. Is provided with a second transmitted light amount adjustment layer 25 that enables transmission illumination.

  Further, on the back side of the display plate 5, a transmission diffusion printing layer 26 made of a white print layer is printed on the entire back side of the substrate 13 between the substrate 13 of the display plate 5 and the second transmitted light amount adjustment layer 25. Is formed.

  In the present embodiment, the first transmitted light amount adjustment layer 24 provided on the transmissive printing layer 23 has a light amount that passes through the substrate 13 from the outside to the inside of the substrate 13 (the dial plate 5). The second transmitted light amount adjustment layer 25 is provided so as to gradually increase with respect to a predetermined unit area, and the second transmitted light amount adjustment layer 25 is provided so that the amount of light transmitted through the substrate 13 gradually decreases from the outside toward the inside. Yes.

  The scale part constituting a part of the indicator part 4 is located in the area of the ground color layer 14, but the numbers and symbols made up of the white semi-transmissive display layer 4A constituting the other indicator part 4 are gradations. Is provided in the region of the first transmitted light amount adjustment layer 24 composed of a black dot print layer. In this case, the ground color layer 14 is formed in order to clarify the boundary between the numerals and symbols made of the white translucent display layer 4A and the first transmitted light amount adjusting layer 24 made of the black print layer. A bordering portion 14A is provided.

  In the display panel 5 having the above-described configuration, the semi-transmissive display layer 4A of the indicator unit 4 is transmitted in white by the irradiation light from the light-emitting diode 8 that is a light source in substantially the same manner as in the first embodiment described above. At the same time as illumination, 23 portions of the transmissive printing layer provided in the region where the transmission light amount adjustment layer 24 composed of a black printed layer by gradation is provided are the first transmission light amount adjustment layer 24 composed of a gradation printed layer. With the second transmitted light amount adjustment layer 25 provided on the back side of the display plate 5, the amount of light transmitted through the display plate 5 can be transmitted and illuminated almost uniformly.

  At this time, in the present embodiment, the transmission diffusion printing layer 26 made of a white printing layer is provided between the substrate 13 and the second transmission light amount adjustment layer 25, so that the second transmission light amount adjustment layer 25 is provided. By providing the transmission diffusion printing layer 26 on the front side, the shadow that becomes a boundary by the contour portion of the second transmitted light amount adjustment layer 25 that is likely to be generated by the light emitted from the light emitting diode 8 that is a light source is from the substrate 13 that is relatively thin. The transparent diffusion printed layer 26 can make it possible to see through the surface of the display panel 5, thereby reducing the unevenness of the entire display panel 5 due to the transmitted illumination.

  Further, in the region where the first transmitted light amount adjustment layer 24 made of a black printed layer by gradation in the present embodiment is applied, the 23 transmissive printed layers provided in the region are the first made of gradation printed layers. Since the transmitted light amount adjusting layer 24 is provided so that the region that transmits the display plate 5 gradually changes, the entire display plate 5 can be seen three-dimensionally, and the illumination effect of the display plate 5 having a good appearance can be brought about. Thus, a novel lighting device can be provided.

  Similarly to the first embodiment described above, the boundary portion between the indicator portion 4 on the display board 5 and the first transmitted light amount adjustment layer 24 is clearly defined in the contour portion of the indicator portion 4. By providing an edge portion 14A made of a light shielding layer, the indicator portion 4 can partition the boundary portion with the first transmitted light amount adjustment layer 24 by the edge portion 14A made of a light shielding layer. 4 can be clearly displayed, and separately from the transmitted illumination color of the white translucent display layer 4A, which is a transmissive layer provided in the indicator portion 4, and the region of the indicator portion 4. By forming the blue transmission illumination color different from the blue transmission illumination color by the provided transmission printing layer 23, the four indicator portions on the display board 5 are brightly illuminated with white transmission illumination, and by gradation. First transmission consisting of a printing layer Since the blue transmitted illumination color of the transparent printing layer 23 that overlaps the amount adjusting layer 24 appears differently in different shades, the illumination effect of the display board 5 that is vivid and good in appearance is brought about. Can do.

  The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the gist of the present invention. For example, it is transmitted through the indicator portion 4 provided on the display board 5 or a pattern by gradation. When changing the illumination color of the 23 transmissive printed layers, the illumination color can be appropriately set by changing the emission color of the light-emitting diode 8 as the light source or by transmissive illumination through a coloring filter. It is. The printed layers applied to the front side or the back side of the display board 5 may be set as appropriate according to the specifications. For example, the color may be changed or the board of the display board 5 may be changed to give a sense of depth. Illumination unevenness can be reduced by changing the thickness or changing the pattern by gradation (formed by dot printing in the embodiment). In this case, by setting so that the degree of shading changes as a pattern by gradation, such as a lattice pattern or a tortoiseshell pattern, it is possible to achieve excellent design and transmission illumination without uneven illumination. . Further, if the indicating instrument does not need to illuminate the pointer 3, it is not necessary to provide the light emitting diode 7, and only the light emitting diode 8 dedicated to the display board 5 may be provided.

  Further, as described in detail in the above-described embodiment, the description has been given by taking an example of an indicator instrument for a vehicle such as an automobile. The present invention can also be applied to an indicating instrument.

DESCRIPTION OF SYMBOLS 1 Instrument main body 2 Rotating shaft 3 Pointer 4 Indicator part 4A Semi-transmissive display layer (transmissive layer)
5 Display board 6 Circuit board 7 Light emitting diode (light source)
8 Light emitting diode (light source)
9 Frame 13 Substrate 14 Ground color layer (light shielding layer)
14A Border 15 Light guide 16 Light guide 18 Light case 19 Light receiving part 20 Reflecting surface 21 Irradiation part 22 Reflecting part 23 Transmission printing layer 24 First transmission light quantity adjustment layer 25 Second transmission light quantity adjustment layer 26 Transmission diffusion printing layer

Claims (4)

A pointer mounted on the distal end side of the rotating shaft provided in the instrument body, and disposed corresponding to a position where the pointer is instructed to rotate, and is formed of a light-shielding layer portion and a transmission layer portion on a translucent substrate. In an indicating instrument comprising a display board provided with a printed indicator part and a light source provided behind the display board, the indicator board is provided separately from the area of the indicator part. And a gradation-based printing layer that is provided on the front side of the transmissive printing layer and allows the transmissive printing layer to be transmissively illuminated so that the amount of light transmitted through the display plate gradually changes with a predetermined region as a reference. A first transmitted light amount adjustment layer, and provided on the back side of the display plate so as to correspond to at least the first transmitted light amount adjustment layer, and the light amount transmitted through the display plate with respect to a predetermined region is gradually increased. The transparent mark to change Comprising a second transmitted light quantity adjustment layer to the layer enabling transmission illumination, wherein the first transmitted light amount adjusting layer, the amount of light transmitted through the panel from the outside of the display panel toward the inside increases gradually And the second transmitted light amount adjustment layer is provided so that the amount of light transmitted through the display plate gradually decreases from the outside to the inside of the display plate .   The indicating instrument according to claim 1, further comprising a transmission diffusion printing layer between the substrate and the second transmitted light amount adjustment layer.   The border portion between the indicator portion and the first transmitted light amount adjustment layer is provided with an edge portion made of a light shielding layer for clarifying the border portion on the contour portion of the indicator portion. The indicating instrument according to any one of claims 1 and 2. 4. The transmission illumination color of the transmission layer provided in the indicator section and the transmission illumination color of the transmission printing layer are formed in different colors. Indicator instrument.

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