Vehicle interior lighting device

Abstract

The present disclosure provides an in-cabin lighting device. The in-cabin lighting device is provided with: a plurality of front light emitting portions (33L, 33R) disposed at the front of a cabin (11) and respectively irradiating light to each front portion of a front door trim (24L, 24R) arranged on each of the left and right side surfaces at the front of the cabin (11); and a plurality of rear light emitting portions (36L, 36R) disposed at the rear of the cabin (11) and respectively irradiating light to each rear portion of a rear door trim (28L, 28R) arranged on each of the left and right side surfaces at the rear of the cabin (11).

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Japanese Patent Application No. 2022-069687, filed on April 20, 2022, the entire contents of which, including the description, claims, drawings and abstract, are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the structure of an interior lighting device for a train carriage. Background Technology

[0004] In recent years, interior lighting devices that create a visual extension within the train car have been proposed. For example, one interior lighting device is proposed in which a strip-shaped light guide, which integrates a partial reflective surface on the inside of the car, a total reflective surface opposite it, and an incident angle variation element, is installed on the side of the car door, and light is emitted from the light guide as a whole into the car car through a light-emitting unit installed at one end of the light guide (for example, see Japanese Patent Application Publication No. 2019-137098).

[0005] In addition, a lighting device has been proposed that emits light from the side by means of a light guide that allows light incident from one end to propagate internally and leaks light from the side, and the scattering of light from an LED incident from the side of the light guide (e.g., Japanese Patent Application Publication No. 2015-182567). Summary of the Invention

[0006] However, in recent years, there has been a demand not only for visually expanding interior spaces, but also for creating spaces that allow occupants to feel comfortable and relaxed. Yet, there is still room for improvement in existing lighting technologies for creating such spaces.

[0007] Therefore, the purpose of this disclosure is to provide an interior lighting device that creates a space that allows passengers to feel both visual expansion within the carriage and comfort, thus enabling them to relax.

[0008] The interior lighting device disclosed herein is characterized by comprising: a plurality of front light-emitting portions disposed at the front of the carriage and illuminating light onto the front portions of the front interior trim members disposed on the left and right sides of the front of the carriage; and a plurality of rear light-emitting portions disposed at the rear of the carriage and illuminating light onto the rear portions of the rear interior trim members disposed on the left and right sides of the rear of the carriage.

[0009] In this way, by illuminating the four corners of the carriage, the lighting areas on the left and right sides, front and rear of the carriage will make passengers feel a visual expansion of the vehicle's front and rear dimensions. Furthermore, the lighting areas on the left and right sides at the front or rear of the carriage will make passengers feel a visual expansion of the vehicle's width. This creates the illusion that the entire carriage has expanded visually. In addition, by indirectly illuminating the four corners of the carriage, a comfortable and relaxing space can be created for passengers.

[0010] In the interior lighting device disclosed herein, the following arrangement may also be adopted: each of the front light-emitting parts is disposed on the left and right side ends of the interior trim piece located at the front of the vehicle compartment, and emits light obliquely outward toward the rear of the vehicle to illuminate the front portion of each of the front interior trim pieces; each of the rear light-emitting parts is disposed at the rear of each of the rear interior trim pieces located at the rear of the vehicle, and emits light obliquely outward toward the front of the vehicle to illuminate the rear portion of each of the rear interior trim pieces.

[0011] This structure creates forward lighting areas extending from front to rear at the front of the interior trim components on both sides of the passenger compartment, and a rear lighting area extending from rear to front at the rear of the interior trim components. This allows passengers to perceive a visual expansion of the vehicle's longitudinal direction within the passenger compartment. Furthermore, because the interior is illuminated indirectly, passengers perceive the passenger compartment as a comfortable and relaxing space.

[0012] In the interior lighting device disclosed herein, the following method may also be adopted, namely, each of the front interior trim components is a front door trim component installed on the side of the left and right front doors respectively, and each of the rear interior trim components is a rear door trim component installed on the side of the left and right rear doors respectively.

[0013] Thus, by shining light onto the front parts of the left and right front door trim pieces and the rear parts of the left and right rear door trim pieces that make up the left and right sides of the passenger compartment, passengers can perceive a visual expansion of the vehicle's front and rear directions within the passenger compartment.

[0014] In the interior lighting device disclosed herein, the following arrangement may also be adopted: each of the front door trim pieces includes a front door trim piece body constituting the left and right inner surfaces of the passenger compartment of each of the front doors, and a front door trim panel respectively mounted on the passenger compartment side surface of each of the front door trim piece bodies; each of the rear door trim pieces includes a rear door trim piece body constituting the left and right inner surfaces of the passenger compartment of each of the rear doors, and a rear door trim panel respectively mounted on the passenger compartment side surface of each of the rear door trim piece bodies; the left front door trim panel and the left rear door trim panel, as well as the right front door trim panel and the right rear door trim panel are arranged in a manner that they are respectively arranged in the longitudinal direction of the vehicle; each of the front light-emitting parts irradiates light onto the front part of each of the front door trim panels, and each of the rear light-emitting parts irradiates light onto the rear part of each of the rear door trim panels.

[0015] Thus, by illuminating the front of the front door trim panels and the rear of the rear door trim panels arranged in the longitudinal direction of the vehicle, the front and rear lighting areas appear to be expanded in the longitudinal direction of the vehicle, thereby enabling passengers to perceive a visual expansion of the vehicle's longitudinal direction within the passenger compartment.

[0016] In the interior lighting device disclosed herein, the following method may also be adopted, in which each of the rear light-emitting parts is respectively installed inside the rear part of the rear door trim body located at the rear of the vehicle of each of the rear door trim panels, and emits light obliquely outward toward the front of the vehicle from the gap between each of the rear door trim panels and each of the rear door trim bodies.

[0017] Thus, without affecting the interior design of the vehicle, a rear lighting area extending from the rear to the front can be formed at the rear of the rear door trim panel.

[0018] In the interior lighting device disclosed herein, the following approach may also be adopted: each of the front door trim panels and each of the rear door trim panels are strip-shaped components with higher light reflectivity compared to the main bodies of the front door trim pieces and the main bodies of the rear door trim pieces, and extending in the longitudinal direction of the vehicle.

[0019] Therefore, because there are strip-shaped lighting areas extending in the front and rear directions of the left and right sides of the carriage, passengers can further perceive the visual expansion of the vehicle in the front and rear directions inside the carriage.

[0020] In the interior lighting device disclosed herein, the interior trim piece may be a dashboard disposed at the front of the vehicle compartment. The dashboard has air blowing nozzles protruding into the vehicle compartment at the left and right side ends, and mortar-shaped recesses disposed at the outer side of each air blowing nozzle in the vehicle width direction. Each mortar-shaped recess extends obliquely outward toward the rear of the vehicle, and each front light-emitting part is a light-emitting element disposed in each of the recesses.

[0021] This allows for targeted lighting of the front portion of the left and right front door trim panels.

[0022] In the interior lighting device disclosed herein, the following arrangement may also be adopted: each of the front light-emitting parts is disposed at the front of the vehicle of each of the front interior trim parts, and emits light obliquely outward toward the rear of the vehicle to illuminate the front portion of each of the front interior trim parts; and each of the rear light-emitting parts is disposed at the rear of the vehicle of each of the rear interior trim parts, and emits light obliquely outward toward the front of the vehicle to illuminate the rear portion of each of the rear interior trim parts.

[0023] Therefore, a front lighting area extending from the front to the rear is formed at the front part of the front interior trim component on the left and right sides of the passenger compartment, and a rear lighting area extending from the rear to the front is formed at the rear part of the rear interior trim component, thereby enabling passengers to perceive a visual expansion of the vehicle's front and rear directions within the passenger compartment.

[0024] In the interior lighting device disclosed herein, the following configuration may also be adopted: each of the front interior trim components is a front door trim component installed on the passenger compartment side of the left and right front doors respectively; each of the rear interior trim components is a rear door trim component installed on the passenger compartment side of the left and right rear doors respectively; each of the front door trim components includes a front door trim component body constituting the left and right inner surfaces of the passenger compartment of each of the front doors, and a front door trim panel installed on the passenger compartment side surface of each of the front door trim component bodies respectively; each of the rear door trim components includes a rear door trim component body constituting the left and right inner surfaces of the passenger compartment of each of the rear doors, and a rear door trim panel installed on the passenger compartment side surface of each of the rear door trim component bodies respectively; the left front door trim panel and the left rear door trim panel, and... The right-side front door trim panel and the right-side rear door trim panel are arranged in a manner that is respectively aligned in the vehicle's longitudinal direction. Each of the front light-emitting units is installed inside the front portion of the main body of the front door trim piece located at the front of the vehicle for each of the front door trim panels, and emits light obliquely outward toward the rear of the vehicle from the gap between each of the front door trim panels and the main body of the front door trim piece, so as to illuminate light onto the front portion of each of the front door trim panels. Each of the rear light-emitting units is installed inside the rear portion of the main body of the rear door trim piece located at the rear of the vehicle for each of the rear door trim panels, and emits light obliquely outward toward the front of the vehicle from the gap between each of the rear door trim panels and the main body of the rear door trim piece, so as to illuminate light onto the rear portion of each of the rear door trim panels.

[0025] Thus, a front lighting area extending from front to rear can be formed at the front part of the front door trim panel, and a rear lighting area extending from rear to front can be formed at the rear part of the rear door trim panel.

[0026] This disclosure provides a cabin lighting device that creates a space that allows passengers to feel both visual expansion within the cabin and comfort, thus enabling them to relax. Attached Figure Description

[0027] Figure 1 This is a top view of the passenger compartment of a vehicle equipped with the passenger compartment lighting device according to the embodiment.

[0028] Figure 2 This is a perspective view of the front portion of a vehicle's passenger compartment from inside the compartment, where the passenger compartment lighting device of the embodiment is installed. Figure 1 The AA view shown.

[0029] Figure 3This is a perspective view taken from inside the passenger compartment of a vehicle equipped with the interior lighting device of the embodiment, showing the right side of the passenger compartment. Figure 1 The BB view shown.

[0030] Figure 4 This is a cross-sectional view of the front light-emitting part, and is Figure 3 The CC section is shown.

[0031] Figure 5 This is a diagram showing the view from the front of the vehicle looking at the rear light-emitting part, and it is... Figure 3 The DD section is shown.

[0032] Figure 6 This is a three-dimensional view of the rear-emitting part when viewed from the front of the vehicle.

[0033] Figure 7 To be able to from inside the carriage Figure 2 The diagram shows a perspective view of the front part of the carriage, indicating that the front light-emitting part is lit.

[0034] Figure 8 To be able to from inside the carriage Figure 3 The diagram shows an elevation view of the right side of the carriage, indicating that the front and rear light-emitting parts are illuminated.

[0035] Figure 9 This is an elevation view of the right side of a vehicle when viewed from inside the vehicle's interior, which is equipped with an interior lighting device according to another embodiment. Detailed Implementation

[0036] Hereinafter, the interior lighting device 100 of the embodiment will be described with reference to the accompanying drawings. In addition, the arrows FR, UP, and RH shown in each figure represent the forward (traveling) direction, upward direction, and rightward direction of the vehicle 10, respectively. Furthermore, the opposite directions of each arrow FR, UP, and RH represent the rearward, downward, and leftward directions of the vehicle. Hereinafter, only the forward / backward, left / right, and up / down directions will be used in the description, unless otherwise specified beforehand, they will be defined as forward / backward in the forward / backward direction, left / right in the left / right direction (vehicle width direction), and up / down in the up / down direction.

[0037] First, in reference Figures 1 to 3 At the same time, the vehicle 10 equipped with the interior lighting device 100 of the embodiment will be described. For example... Figure 1As shown, vehicle 10 is a four-door sedan with left and right front doors 21L and 21R, and left and right rear doors 25L and 25R. It has a driver's seat 12R and a passenger seat 12L at the front of the passenger compartment 11, and a rear seat 13 at the rear of the passenger compartment 11. A steering wheel 14 is installed in front of the driver's seat 12R in the passenger compartment 11, and an instrument panel 15 is positioned in front of the steering wheel 14. The instrument panel 15 is an interior trim piece located at the front of the passenger compartment 11, and it displays driving instruments such as a speedometer. Furthermore, as... Figure 1 , 2 As shown, on the left and right sides of the instrument panel 15, there are left and right air blowing nozzles 16L and 16R that blow air conditioning air towards the interior of the passenger compartment and towards the rear of the vehicle.

[0038] like Figure 3 As shown, a front door trim piece 24R, serving as a front interior trim component, is installed on the passenger compartment side of the right-side front door 21R. The front door trim piece 24R consists of a right-side front door trim piece body 22R forming the inner surface of the right front of the passenger compartment 11, and a right-side front door trim panel 23R mounted on the passenger compartment side surface of the right-side front door trim piece body 22R. A front lever 51R for opening and closing the front door 21R is installed on the front door trim panel 23R, and a front elbow rest 53R is provided on the lower side of the front door trim panel 23R.

[0039] On the right rear door 25R, a rear door trim piece 28R, serving as a rear interior trim component, is installed on the passenger compartment side. The rear door trim piece 28R consists of a right rear door trim piece body 26R forming the inner surface of the right rear of the passenger compartment 11, and a right rear door trim panel 27R mounted on the passenger compartment side surface of the right rear door trim piece body 26R. A rear bar 55R for opening and closing the rear door 25R is installed on the rear door trim panel 27R, and a rear elbow rest 56R is provided on the lower side of the rear door trim panel 27R. The front door trim panel 23R and the rear door trim panel 27R are both plate-shaped components extending in the vehicle's longitudinal direction and are arranged in a manner that allows them to coexist in the same direction.

[0040] The front door trim body 22R and the rear door trim body 26R are resin components with a finely textured surface, which reduces light reflection. On the other hand, the front door trim panel 23R and the rear door trim panel 27R are components with a smoother surface, such as a wood grain pattern, and have a higher light reflectivity compared to the front door trim body 22R and the rear door trim body 26R.

[0041] The left front door 21L is symmetrical to the right front door 21R. Inside the passenger compartment of the left front door 21L, a left front door trim piece 24L is installed, consisting of the left front door trim piece body 22L and the left front door trim panel 23L. A front lever 51L for opening and closing the left front door 21L is installed on the front door trim panel 23L (see reference). Figure 2 Furthermore, the left rear door 25L is symmetrical to the right rear door 25R, and on the inside of the passenger compartment of the left rear door 25L, a left rear door trim piece 28L is installed, which is composed of the left rear door trim piece body 26L and the left rear door trim panel 27L. A rear bar (not shown) for opening and closing the left rear door 25L is installed on the rear door trim panel 27L.

[0042] In addition, left and right center pillars 17L and 17R are arranged between the left and right front doors 21L and 21R and the left and right rear doors 25L and 25R.

[0043] Next, return to Figure 1 The interior lighting device 100 mounted on the vehicle 10 will be described below. The interior lighting device 100 consists of front light-emitting portions 33L and 33R mounted on the left and right sides at the front of the vehicle 11, and rear light-emitting portions 36L and 36R mounted on the left and right sides at the rear of the vehicle 11. The front light-emitting portions 33L and 33R emit light diagonally outwards towards the rear of the vehicle while the vehicle 10 is in motion or stationary, thereby illuminating the front portion of the front door trim pieces 24L and 24R, which are front interior trim components. Furthermore, the rear light-emitting portions 36L and 36R emit light diagonally outwards towards the front of the vehicle while the vehicle 10 is in motion or stationary, thereby illuminating the rear portion of the rear door trim pieces 28L and 28R, which are rear interior trim components.

[0044] First, let's explain the front light-emitting part 33R on the right side. For example... Figure 1 , 2 As shown, the front light-emitting part 33R on the right side is mounted on the outer side of the right side of the air outlet nozzle 16R at the right end of the instrument panel 15. (As shown...) Figure 3 , 4 As shown, a mortar-shaped recess 32R is provided on the outer side of the air outlet nozzle 16R on the right side of the dashboard 15 in the vehicle width direction. The mortar-shaped recess 32R widens obliquely outward toward the rear of the vehicle, and a light-emitting element 31R is disposed within the recess 32R. The light emitted from the light-emitting element 31R is guided by the conical surface of the mortar-shaped recess 32R, thereby traveling along... Figure 1 , 4The light paths 91R and 92R, indicated by single-dot lines, travel diagonally to the right rear of vehicle 10 to illuminate the front door trim panel 23R of the right front door 21R and the front portion of the surrounding front door trim body 22R. The light-emitting element 31R and the recess 32R constitute the front light-emitting portion 33R. Furthermore, the light-emitting element 31R can emit light in colors such as light bulb color, daylight color, green, or blue.

[0045] As explained above, the front door trim body 22R is a resin component with a finely textured surface, thus reflecting light relatively little. The front door trim panel 23R, on the other hand, has a smoother surface and therefore a higher reflectivity compared to the front door trim body 22R. Consequently, when light shines on the front portion of the front door trim panel 23R and the surrounding front part of the front door trim body 22R, the front door trim body 22R does not appear to emit light; instead, it resembles… Figure 7 As shown by the grid lines, only the front part of the front door trim panel 23R is illuminated. Figure 7 The area indicated by the grid lines is called the right-side forward lighting area 61R. As explained earlier, the front door trim panel 23R is a strip-shaped component extending in the longitudinal direction of the vehicle; therefore, the forward lighting area 61R becomes a strip-shaped area extending from the front of the vehicle 10 toward the rear. Furthermore, since the light emitted from the light-emitting element 31R travels diagonally to the right rear of the vehicle, the brightness of the forward lighting area 61R gradually decreases as it moves toward the rear of the vehicle 10, and fades away near the front of the front pole 51R. As a result, the occupant perceives the forward lighting area 61R as a strip of light radiating from the front of the vehicle 10 toward the rear.

[0046] The left-side front light-emitting portion 33L and the right-side front light-emitting portion 33R are symmetrical, and each is composed of a recess (not shown) located on the outer side of the air outlet nozzle 16L on the left side of the instrument panel 15 in the vehicle width direction, and a light-emitting element (not shown) installed in the recess. The light emitted from the light-emitting element of the left-side front light-emitting portion 33L travels along a path... Figure 1 The dotted lines in the diagram indicate that the light paths 91L and 92L travel towards the left rear of vehicle 10, illuminating the front door trim panel 23L of the left front door 21L and the front part of the surrounding front door trim body 22L, thereby forming... Figure 7 The left-hand front illumination area 61L is shown in the grid lines. The range and brightness of the left-hand front illumination area 61L are the same as those of the right-hand front illumination area 61R.

[0047] Next, the rear light-emitting part 36R on the right side will be explained. For example... Figure 3As shown, the rear light-emitting part 36R on the right side is installed inside the rear part 26Rd of the rear door trim body 26R located at the rear of the vehicle on the right side of the rear door trim panel 27R.

[0048] like Figure 5 , 6 As shown, a groove 26Rb is provided on the general portion 26Ra of the rear door trim body 26R where the rear door trim panel 27R is mounted, for the rear door trim panel 27R to be embedded. The rear door trim panel 27R is installed in the groove 26Rb such that the side surface 27Ra of its passenger compartment 11 is at the same height as the side surface 26Rc of its passenger compartment 11 on the upper side of the rear door trim body 26R. The rear portion 26Rd of the rear door trim body 26R bulges toward the interior of the passenger compartment 11 compared to the surface 27Ra of the rear door trim panel 27R, and a longitudinally elongated groove-shaped cutout 26Rf is formed in the side recessed toward the passenger compartment 11 near the surface 27Ra of the rear door trim panel 27R on the front portion 26Re of the vehicle. Cutout 26Rf creates a gap 29R between the rear part 26Rd of the rear door trim body 26R and the surface 27Ra of the rear door trim panel 27R.

[0049] The rear light-emitting section 36R is composed of a light guide rod 34R and a light-emitting element 35R disposed at one end of the light guide rod 34R. The light guide rod 34R causes light incident from the light-emitting element 35R disposed at one end to propagate internally and emit light from the side. Figure 3 , 5 As shown in Figure 6, the light guide rod 34R is installed inside the rear door trim body 26R such that its length extends along the gap 29R between the surface 27Ra of the rear door trim body 26R and the rear door trim panel 27R. The light guide rod 34R has fine grooves extending in the vehicle's longitudinal direction to radiate light horizontally. Furthermore, the light guide rod 34R is installed at an angle so that the side radiating light faces forward and outwards towards the vehicle. Thus, the light guide rod 34R... Figure 6 As indicated by arrow 95, the light incident from the light-emitting element 35R is emitted horizontally from the gap 29R, angled outwards towards the front of the vehicle. The emitted light travels along... Figure 1 The light path 93R, indicated by the dotted line, travels diagonally forward and to the right of vehicle 10, and... Figure 8 Illuminate the rear of the rear door trim panel 27R of the right-side rear door 25R as shown by the grid lines. Figure 8The area indicated by the grid lines is called the rear lighting area 62R on the right. Furthermore, the light-emitting element 35R can emit light in colors such as light bulb color, daylight color, green, or blue.

[0050] As explained above, the rear door trim panel 23R is a relatively smooth strip extending in the longitudinal direction of the vehicle. Therefore, the rear lighting area 62R becomes a strip extending from the rear of the vehicle 10 towards the front. Furthermore, since the light emitted from the rear light-emitting unit 36R travels diagonally forward to the right of the vehicle 10, the brightness of the rear lighting area 62R gradually decreases as it moves towards the front of the vehicle 10, fading away near the rear of the rear bar 55R. This makes the rear lighting area 62R appear to passengers as a strip of light radiating from the rear of the vehicle 10 towards the front.

[0051] Furthermore, because the main body 26R of the rear door trim piece has subtle irregularities on its surface, it does not reflect light very much. Therefore, even when light shines from the rear light-emitting part 36R, the light emission is barely noticeable, and it appears as if... Figure 7 As shown by the grid lines, only the rear of the rear door trim panel 27R can be observed to emit light in a strip-like pattern.

[0052] The rear light-emitting section 36L on the left and the rear light-emitting section 36R on the right are symmetrical and are composed of a light guide (not shown) and a light-emitting element (not shown). The light guide of the rear light-emitting section 36L directs the light incident from the light-emitting element outwards and diagonally towards the front of the vehicle through the gap (not shown) between the rear door trim panel 27L and the rear door trim body 26L at the rear of the vehicle. The emitted light travels along... Figure 1 The light path 93L, indicated by the dotted line, travels diagonally forward and to the left of the vehicle 10, illuminating the rear of the left rear door trim panel 27L, thereby forming... Figure 1 The left-side rear lighting area 62L is shown. The range and brightness of the left-side rear lighting area 62L are the same as those of the right-side rear lighting area 62R.

[0053] As explained above, the interior lighting device 100 has four light-emitting parts arranged at the four corners of the carriage 11: left and right front light-emitting parts 33L, 33R and left and right rear light-emitting parts 36L, 36R, thus forming left and right front lighting areas 61L, 61R and left and right rear lighting areas 62L, 62R. The right front lighting area 61R and rear lighting area 62R, and the left front lighting area 61L and rear lighting area 62L, each make the passengers feel a visual expansion of the carriage 11 in the longitudinal direction. In addition, the left and right front lighting areas 61L, 61R and rear lighting areas 62L, 62R make the passengers feel a visual expansion of the carriage 11 in the width direction. Thus, the interior lighting device 100 makes the passengers visually perceive that the carriage 11 has expanded. Furthermore, by using the front light-emitting units 33L and 33R on the left and right sides and the rear light-emitting units 36L and 36R on the left and right sides to provide indirect lighting to the four corners of the carriage 11, it is possible to create a space that allows passengers to feel comfortable and relax.

[0054] Because the left and right front lighting areas 61L and 61R are strip-shaped areas extending from the front of the vehicle 10 towards the rear, and their brightness gradually decreases and fades as they approach the rear of the vehicle 10, passengers perceive them as bands of light radiating from the front of the vehicle 10 towards the rear. Similarly, because the left and right rear lighting areas 62L and 62R are strip-shaped areas extending from the rear of the vehicle 10 towards the front, and their brightness gradually decreases and fades as they approach the front of the vehicle 10, passengers perceive them as bands of light radiating from the rear of the vehicle 10 towards the front. Furthermore, there is an area between the front lighting areas 61L and 61R and the rear lighting areas 62L and 62R that is not illuminated. Therefore, passengers can more strongly perceive the visual expansion of the passenger compartment 11 in the front-to-back direction.

[0055] As explained above, the interior lighting 100 can create a space that allows passengers to feel a sense of comfort and relaxation while experiencing a visual expansion of the carriage 11.

[0056] Although the above description focuses on the case where the interior lighting device 100 is mounted on a four-door van 10, it is not limited to this; for example, it can also be mounted on a two-door vehicle. In this case, the rear light-emitting parts 36L and 36R can be mounted in the interior trim of the side wall of the passenger compartment 11 behind the front doors 21L and 21R instead of on the rear doors 25L and 25R, to illuminate the rear of the interior trim. In the case where the interior lighting device 100 is mounted on a vehicle, such as a bus, without a door on the right side, the front light-emitting part 33R and the rear light-emitting part 36R can be further mounted in the interior trim of the right side of the passenger compartment 11 to illuminate the front and rear of the right side of the passenger compartment 11.

[0057] Furthermore, although the above description describes the case where the front light-emitting parts 33L and 33R are located at the left and right side ends of the instrument panel 15 at the front of the vehicle, it is not limited to this case as long as light can be irradiated onto the front part of the front door trim pieces 24L and 24R, which are front interior trim pieces. They can also be located on the side end surfaces of other interior trim pieces.

[0058] Next, in reference Figure 9 Meanwhile, other embodiments of the interior lighting device 200 will also be described. (Referring to the one mentioned above...) Figures 1 to 8 The same symbols are used for the same parts of the interior lighting device 100 described, and the descriptions are omitted. First, the front light-emitting part 39R on the right side of the carriage 11 will be described.

[0059] like Figure 9 As shown, the interior lighting device 200 is similar to the rear light-emitting part 36R, with the front light-emitting part 39R consisting of a light guide rod 37R and a light-emitting element 38R, and the structure of the front light-emitting part 39R is such that the rear light-emitting part 36R is flipped back and forth.

[0060] The front light-emitting part 39R is installed inside the front part 22Rd of the front door trim body 22R located at the front of the front door trim panel 23R, and emits light obliquely outward toward the rear of the vehicle from the gap 30R between the front door trim panel 23R and the front door trim body 22R. The front light-emitting part 39R forms a front lighting area 63R extending in a strip shape from front to rear at the front of the front door trim panel 23R.

[0061] The front light-emitting part on the left side of the vehicle compartment 11 (not shown) has a structure that is symmetrical to the front light-emitting part 39R on the right side. It emits light obliquely outward from the gap (not shown) between the front door trim panel 23L and the front door trim body 22L towards the rear of the vehicle, thereby forming a front lighting area (not shown) that extends in a strip from the front to the rear at the front part of the front door trim panel 23L.

[0062] Like the interior lighting device 100, the interior lighting device 200 can create a space that makes passengers feel as if the carriage 11 has been expanded, and provides indirect lighting to the four corners of the carriage 11, thereby making passengers feel comfortable and relaxed.

Claims

1. An in-cab lighting device, characterized by, Possessing: a plurality of front light emitting portions provided at a front of a passenger compartment and respectively irradiating light to each front portion of a front interior trim member respectively arranged on left and right side surfaces at the front of the passenger compartment; a plurality of rear light emitting portions provided at a rear of the passenger compartment and respectively irradiating light to each rear portion of a rear interior trim member respectively arranged on left and right side surfaces at the rear of the passenger compartment, each of the front light emitting portions is arranged on a left and right side end portion of an interior trim provided at the front of the passenger compartment and respectively emits light obliquely outward toward a rear of the vehicle to respectively irradiate light to each of the front portions of each of the front interior trim members, each of the rear light emitting portions is respectively arranged at a rear of the vehicle of each of the rear interior trim members and respectively emits light obliquely outward toward a front of the vehicle to respectively irradiate light to each of the rear portions of each of the rear interior trim members, each of the front interior trim members is a front door trim respectively installed at a passenger compartment side of a left and right front door, each of the rear interior trim members is a rear door trim respectively installed at a passenger compartment side of a left and right rear door, each of the front door trim respectively includes a front door trim main body each constituting a left and right inner surface of the passenger compartment of each of the front door, and a front door trim panel respectively installed on a passenger compartment side surface of each of the front door trim main body, each of the rear door trim respectively includes a rear door trim main body each constituting a left and right inner surface of the passenger compartment of each of the rear door, and a rear door trim panel respectively installed on a passenger compartment side surface of each of the rear door trim main body, the left front door trim panel and the left rear door trim panel, and the right front door trim panel and the right rear door trim panel are arranged in a manner of respectively arranging in a vehicle front and rear direction, each of the front light emitting portions respectively irradiates light to each front portion of each of the front door trim panel, each of the rear light emitting portions respectively irradiates light to each rear portion of each of the rear door trim panel, each of the rear light emitting portions is respectively installed inside of a rear of the vehicle portion of each of the rear door trim main body located at a rear of the vehicle of each of the rear door trim panel and respectively emits light obliquely outward toward a front of the vehicle from a gap between each of the rear door trim panel and each of the rear door trim main body.

2. The interior illumination device of the passenger compartment according to claim 1, wherein each of the front door trim panel and each of the rear door trim panel is a belt-shaped member having a higher light reflectance than each of the front door trim main body and each of the rear door trim main body and extending in the vehicle front and rear direction.

3. The interior illumination device of the passenger compartment according to claim 1, wherein the interior trim is an instrument panel arranged at the front of the passenger compartment, the instrument panel has an air blow-off nozzle protruding toward the inside of the passenger compartment at a left and right side end portion, and a mortar-shaped recess respectively provided at a vehicle width direction outer side portion of each of the air blow-off nozzle, Each of the aforementioned mortar-shaped depressions extends obliquely outwards towards the rear of the vehicle. Each of the aforementioned front light-emitting portions is a light-emitting element that is respectively disposed in each of the aforementioned recesses.

4. The interior lighting device as described in claim 1, characterized in that, Each of the aforementioned front light-emitting portions is respectively positioned at the front of each of the aforementioned front interior trim components, and emits light obliquely outward toward the rear of the vehicle, so as to illuminate the respective front portion of each of the aforementioned front interior trim components. Each of the rear light-emitting parts is disposed at the rear of the vehicle of each of the rear interior trim components, and emits light obliquely outward toward the front of the vehicle, so as to irradiate light onto each of the rear portions of each of the rear interior trim components.

5. The interior lighting device as described in claim 4, characterized in that, Each of the aforementioned front interior trim components refers to a front door trim piece that is respectively installed on the passenger compartment side of the left and right front doors. Each of the aforementioned rear interior trim components refers to the rear door trim pieces that are respectively installed on the passenger compartment side of the left and right rear doors. Each of the aforementioned front door trim pieces includes a front door trim piece body that forms the left and right inner surfaces of the vehicle compartment of each of the aforementioned front doors, and a front door trim piece panel that is respectively installed on the side surface of the vehicle compartment of each of the aforementioned front door trim piece bodies. Each of the aforementioned rear door trim pieces includes a rear door trim piece body that constitutes the left and right inner surfaces of the vehicle compartment of each of the aforementioned rear doors, and a rear door trim piece panel that is respectively installed on the side surface of the vehicle compartment of each of the aforementioned rear door trim piece bodies. The left-side front door trim panel and the left-side rear door trim panel, as well as the right-side front door trim panel and the right-side rear door trim panel, are arranged in a manner that allows them to be positioned in the longitudinal direction of the vehicle. Each of the aforementioned front light-emitting units is respectively installed inside the front portion of the main body of each front door trim piece located at the front of each of the aforementioned front door trim panels, and emits light obliquely outward toward the rear of the vehicle from the gap between each of the aforementioned front door trim panels and each of the aforementioned front door trim piece bodies, so as to irradiate light onto the front portion of each of the aforementioned front door trim panels. Each of the rear light-emitting parts is installed inside the rear part of the rear door trim body located at the rear of the vehicle of each of the rear door trim panels, and emits light obliquely outward toward the front of the vehicle from the gap between each of the rear door trim panels and each of the rear door trim body, so as to irradiate light onto the rear part of each of the rear door trim panels.

6. The interior lighting device as described in claim 5, characterized in that, Each of the front door trim panels and each of the rear door trim panels are strip-shaped components that have a higher light reflectivity compared to the main body of each of the front door trim pieces and the main body of each of the rear door trim pieces, and that extend in the longitudinal direction of the vehicle.

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