An instrument device includes multiple projected scales projected toward a viewing position side in an axial line direction of a rotation center axis of an indicating needle and arranged at intervals in a circumferential direction, a display board including an insertion portion by which each of the projected scales is projected, an annular portion which covers an outer radial direction portion from the viewing position side in each projected end surface arranged on the viewing position side in each of the projected scales, and a lighting device for emitting light to the projected scales. The projected scale includes a scale visible surface in an inner radial direction than the annular portion in the projected end surface. The annular portion includes grooves provided to each of the projected scales.

An instrument device includes multiple projected scales projected toward a viewing position side in an axial line direction of a rotation center axis of an indicating needle and arranged at intervals in a circumferential direction, a display board including an insertion portion by which each of the projected scales is projected, an annular portion which covers an outer radial direction portion from the viewing position side in each projected end surface arranged on the viewing position side in each of the projected scales, and a lighting device for emitting light to the projected scales. The projected scale includes a scale visible surface in an inner radial direction than the annular portion in the projected end surface. The annular portion includes grooves provided to each of the projected scales.

A lighting and colour scheme for instruments to allow an apparent colour change of indicia and background between daylight viewing and night-time viewing when an instrument light is turned on. White indicia on a red background is conspicuous in daytime, but can be transformed to green indicia on black background when the instrument is illuminated with a green LED for night-time viewing.

A lighting and colour scheme for instruments to allow an apparent colour change of indicia and background between daylight viewing and night-time viewing when an instrument light is turned on. White indicia on a red background is conspicuous in daytime, but can be transformed to green indicia on black background when the instrument is illuminated with a green LED for night-time viewing.

A light conductor device receives light from a light source. The light conductor includes a radial conductor including an annular body, a conductor base, and outer segments. The annular body extends in a circumferential direction. The conductor base extends from the annular body inward in a radial direction. The conductor base extends in the circumferential direction. Each of the outer segments extends from the annular body outward in the radial direction. The outer segments are arranged in the circumferential direction and distant from each other in the circumferential direction. The annular body is located between the conductor base and the outer segments in the radial direction to bridge the conductor base and the outer segments into a single piece.

A light conductor device receives light from a light source. The light conductor includes a radial conductor including an annular body, a conductor base, and outer segments. The annular body extends in a circumferential direction. The conductor base extends from the annular body inward in a radial direction. The conductor base extends in the circumferential direction. Each of the outer segments extends from the annular body outward in the radial direction. The outer segments are arranged in the circumferential direction and distant from each other in the circumferential direction. The annular body is located between the conductor base and the outer segments in the radial direction to bridge the conductor base and the outer segments into a single piece.

A pointer is rotational relative to a dial plate. The pointer includes a pointer shaft, which is non-opaque. A driver unit includes a drive shaft coaxial with the pointer shaft. A light source is configured to emit light. The pointer shaft has a pointer end having a pointer reflective surface. The pointer reflective surface is configured to receive light, which is incident radially inward, and to reflect the light to direct the light along an axial direction of the pointer shaft to pass through the pointer shaft.

A pointer is rotational relative to a dial plate. The pointer includes a pointer shaft, which is non-opaque. A driver unit includes a drive shaft coaxial with the pointer shaft. A light source is configured to emit light. The pointer shaft has a pointer end having a pointer reflective surface. The pointer reflective surface is configured to receive light, which is incident radially inward, and to reflect the light to direct the light along an axial direction of the pointer shaft to pass through the pointer shaft.

A pointer is rotational relative to the dial plate. The pointer includes a pointer shaft, which is non-opaque to conduct light therethrough. A driver unit includes a drive shaft coaxial with the pointer shaft. A light source emits light. A hub interconnects the pointer shaft with the drive shaft. The hub includes a light pickup, which is non-opaque to receive light from the light source and to conduct the light into the pointer shaft.

A pointer is rotational relative to the dial plate. The pointer includes a pointer shaft, which is non-opaque to conduct light therethrough. A driver unit includes a drive shaft coaxial with the pointer shaft. A light source emits light. A hub interconnects the pointer shaft with the drive shaft. The hub includes a light pickup, which is non-opaque to receive light from the light source and to conduct the light into the pointer shaft.