Vehicle interior-dedicated light emitting device

1. A vehicle interior-dedicated light emitting device which emits light on a surface of a vehicle interior component, the vehicle interior component including an upper panel and a lower panel disposed below the upper panel, wherein:

the upper panel includes a first inclined surface facing obliquely downward on a vehicle interior inner side surface of a panel lower portion of the upper panel;

the lower panel includes a second inclined surface facing obliquely upward on a vehicle interior inner side surface of a panel upper portion of the lower panel;

the vehicle interior component includes:

a front surface side space which is formed on a vehicle interior inner side between the panel lower portion of the upper panel and the panel upper portion of the lower panel; and

a slit which is formed between a vehicle interior outer side end of the panel lower portion of the upper panel and a vehicle interior outer side end of the panel upper portion of the lower panel, or is formed to penetrate through the panel upper portion of the lower panel;

the vehicle interior-dedicated light emitting device comprises a light emitting part, which is disposed on a vehicle interior outer side with respect to at least one of the vehicle interior outer side end of the panel lower portion of the upper panel and the vehicle interior outer side end of the panel upper portion of the lower panel and emits light emitted obliquely upward toward an inside of a vehicle interior through the slit;

the light emitting part is a light guide body which extends in a rod shape along the slit and reflects light from a light source which enters an end portion thereof in an extending direction;

the vehicle interior-dedicated light emitting device comprises an outer lens provided to cover the light guide body;

the outer lens has an exposed surface exposed to the vehicle interior inner side through the slit;

light reflected by the light guide body is emitted from the exposed surface toward the inside of the vehicle interior;

the light guide body includes a plurality of prisms arranged side by side in the extending direction;

each of the prisms has an inclined surface portion reflecting or refracting light from the light source; and

the plurality of prisms are formed such that a prism height, of the inclined surface portion, in a direction perpendicular to the extending direction increases as a distance from the light source to the prism increases.

2. The vehicle interior-dedicated light emitting device according to claim 1 , further comprising:

a retainer which holds the light guide body and to which the outer lens is attached;

the retainer and the outer lens define an accommodating space accommodating the light guide body; and

the light guide body is positioned on the vehicle interior outer side in the accommodation space.

3. A vehicle interior-dedicated light emitting device which emits light on a surface of a vehicle interior component, the vehicle interior component including an upper panel and a lower panel disposed below the upper panel, wherein:

the upper panel includes a first inclined surface facing obliquely downward on a vehicle interior inner side surface of a panel lower portion of the upper panel;

the lower panel includes a second inclined surface facing obliquely upward on a vehicle interior inner side surface of a panel upper portion of the lower panel;

the vehicle interior component includes:

a front surface side space which is formed on a vehicle interior inner side between the panel lower portion of the upper panel and the panel upper portion of the lower panel; and

a slit which is formed between a vehicle interior outer side end of the panel lower portion of the upper panel and a vehicle interior outer side end of the panel upper portion of the lower panel, or is formed to penetrate through the panel upper portion of the lower panel;

the vehicle interior-dedicated light emitting device comprises a light emitting part, which is disposed on a vehicle interior outer side with respect to at least one of the vehicle interior outer side end of the panel lower portion of the upper panel and the vehicle interior outer side end of the panel upper portion of the lower panel and emits light emitted obliquely upward toward an inside of a vehicle interior through the slit;

the light emitting part is a light guide body which extends in a rod shape along the slit and reflects light from a light source which enters an end portion thereof in an extending direction;

the vehicle interior-dedicated light emitting device comprises an outer lens provided to cover the light guide body;

the outer lens has an exposed surface exposed to the vehicle interior inner side through the slit;

light reflected by the light guide body is emitted from the exposed surface toward the inside of the vehicle interior;

the light guide body includes a plurality of prisms arranged side by side in the extending direction;

each of the prisms has an inclined surface portion for reflecting or refracting light from the light source; and

the plurality of prisms are formed such that an angle formed by the inclined surface portion with respect to the extending direction changes in accordance with a relative positional relationship between the prism and a driver's seat.

4. A vehicle interior-dedicated light emitting device which emits light on a surface of a vehicle interior component, the vehicle interior component including an upper panel and a lower panel disposed below the upper panel, wherein:

the upper panel includes a first inclined surface facing obliquely downward on a vehicle interior inner side surface of a panel lower portion of the upper panel;

the lower panel includes a second inclined surface facing obliquely upward on a vehicle interior inner side surface of a panel upper portion of the lower panel;

the vehicle interior component includes:

a front surface side space which is formed on a vehicle interior inner side between the panel lower portion of the upper panel and the panel upper portion of the lower panel; and

a slit which is formed between a vehicle interior outer side end of the panel lower portion of the upper panel and a vehicle interior outer side end of the panel upper portion of the lower panel, or is formed to penetrate through the panel upper portion of the lower panel;

the vehicle interior-dedicated light emitting device comprises a light emitting part, which is disposed on a vehicle interior outer side with respect to at least one of the vehicle interior outer side end of the panel lower portion of the upper panel and the vehicle interior outer side end of the panel upper portion of the lower panel and emits light emitted obliquely upward toward an inside of a vehicle interior through the slit;

the light emitting part is a light guide body which extends in a rod shape along the slit and reflects light from a light source which enters an end portion thereof in an extending direction;

the vehicle interior-dedicated light emitting device comprises an outer lens provided to cover the light guide body;

the outer lens has an exposed surface exposed to the vehicle interior inner side through the slit;

light reflected by the light guide body is emitted from the exposed surface toward the inside of the vehicle interior;

the light guide body includes a plurality of prisms arranged side by side in the extending direction;

each of the prisms includes:

a first inclined surface portion which is disposed on a driver's seat side in the extending direction and configured to reflect or refract light from the light source; and

a second inclined surface portion which is disposed on an assistant driver's seat side in the extending direction and configured to reflect or refract light from the light source; and

each of the prisms is formed such that a first angle formed by the first inclined surface portion with respect to a direction from the driver's seat side to the assistant driver's seat side in the extending direction is equal to or smaller than a second angle formed by the second inclined surface portion with respect to a direction from the assistant driver's seat side to the driver's seat side in the extending direction.