Indicator display device
AssigneeDenso Corporation
InventorTakahira Kato
Life of this patent
Estimating the term…
Abstract
An indicator display device includes a light source and an indicator. The light source emits a light flux. The indicator is configured to rotate and includes an entrance portion to which the light flux emitted from the light source enters and a shielding portion that blocks transmission of the light flux entering from the entrance portion. The shielding portion has an exit slit from which the light flux entering from the entrance portion is output toward a user. A width b of the exit slit, an assumed distance L between the indicator and the user, and an assumed visual power VP of the user satisfy a relationship of: b(mm)<L(mm)×tan {1/VP(min)}.
Claims10
An indicator display device, comprising:
- a light source emitting a light flux;
- and
- an indicator configured to rotate, the indicator including an entrance portion to which the light flux emitted from the light source enters and a shielding portion that blocks transmission of the light flux entering from the entrance portion, the shielding portion having an exit slit from which the light flux entering from the entrance portion is output toward a user,
- wherein a width b of the exit slit, an assumed distance L between the indicator and the user, and an assumed visual power VP of the user satisfy a relationship of b(mm)<L(mm)×tan{1/VP(min)}.
An indicator display device, comprising:
- a light source emitting a light flux;
- an indicator configured to rotate, the indicator including an entrance portion to which the light flux emitted from the light source enters and a shielding portion that blocks transmission of the light flux entering from the entrance portion, the shielding portion having an exit slit from which the light flux entering from the entrance portion is output toward a user;
- and
- a light source control section controlling an amount of the light flux emitted from the light source so that a light flux density of an output light that is output from the exit slit corresponds to a light flux density of a reflected light that is an outside light reaching the indicator display device and being reflected by the shielding portion.
Dependencies are inferred from the claim text.