JP4192668B2 - Vehicle interior lighting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an interior lighting device installed in a vehicle interior or a building interior.
[0002]
[Prior art]
2. Description of the Related Art An automobile deodorizing apparatus that is installed in an automobile interior and decomposes odor components in the air is known (for example, see Patent Document 1). This type of automobile deodorizing apparatus is configured by arranging, in order from the air inlet side, a filter, an ultraviolet lamp, activated carbon with a photocatalyst formed in a honeycomb shape, and a blower in series in an air passage. When the air blower rotates and the air in the room between the air blower and the activated carbon is blown to the outside, the air flows from the outside into the room with the ultraviolet lamp through the filter, passes through the activated carbon with the photocatalyst, and passes through the air blower again. It flows out to the outside. When air passes through the activated carbon with photocatalyst, the activated carbon with photocatalyst adsorbs the odorous component, so that the odorless air is sent out from the blower. Here, the activated carbon with a photocatalyst adsorbing the odor component as described above is reactivated as follows. That is, when the activated carbon with photocatalyst is irradiated with ultraviolet rays and heat rays, the temperature rises and odor components are released. At this time, it is not simply released, but the hydroxyl group (OH group) produced by the reaction between the ultraviolet rays and the photocatalyst oxidizes and decomposes the odorous component to change it into a odorless substance.
[0003]
Some of such automobile deodorizing devices are attached to the vehicle interior ceiling from the viewpoint of air purification efficiency.
[0004]
[Patent Document 1]
JP 05-293165 A (3rd and 4th pages, FIG. 1)
[0005]
[Problems to be solved by the invention]
However, the deodorizing apparatus for automobiles as described above includes a ventilation path, a blower, activated carbon with a photocatalyst, an ultraviolet lamp, and the like, so that the apparatus is correspondingly large. Generally, when the structure attached to the ceiling surface on the vehicle interior side is in harmony with the color tone or pattern of the ceiling, the interior appearance of the vehicle interior is good. However, when the vehicle deodorizing device is attached to the ceiling surface on the indoor side of the vehicle, it is difficult to harmonize with the color tone or pattern of the ceiling, and in that case, the appearance of the interior of the vehicle cabin is deteriorated.
[0006]
Note that this is not limited to the case where the vehicle deodorizing device is installed on the vehicle interior side ceiling surface. For example, it is considered that the same problem occurs when the vehicle deodorizing device is installed on the rear tray at the rear of the vehicle. . Moreover, it is thought that the same problem arises also about the deodorizing apparatus installed in the room | chamber interior of a building.
[0007]
The present invention has been made in view of such problems, and an object of the present invention is to harmonize a deodorizing apparatus for decomposing odor components in the air with a vehicle room or a building room.
[0008]
[Means for Solving the Problems and Effects of the Invention]
In order to solve the above-mentioned problem, a vehicle interior lighting device according to claim 1 includes an ultraviolet LED that emits ultraviolet light, and includes an overhead module disposed on a vehicle front side of a ceiling surface of the vehicle, and the overhead The ceiling has an ultraviolet light guide that extends from the end of the module toward the rear of the vehicle and into which ultraviolet light from the ultraviolet LED is incident, and the ceiling of the light guide extends from the end of the overhead module toward the rear of the vehicle. A fluorescent part that converts the ultraviolet light into visible light is provided on the surface opposite to the surface to form an indoor lighting part, and an oxide is applied to a part of the ceiling surface that is irradiated with ultraviolet light emitted from the light guide part It is characterized by arranging a photocatalyst.
[0009]
In the present invention configured as described above, the vehicle interior lighting device has a lighting function and a deodorizing function. Thus, already since imparting deodorizing function harmony to have interior lighting device for a vehicle in the chamber of the vehicle, it can be coordinated with the chamber of the vehicle room lighting device for a vehicle as deodorizing device.
[0010]
The invention according to claim 2 is characterized in that the oxide photocatalyst is configured by applying photocatalyst particles to the ceiling surface. In this case, the indoor lighting device can be made thinner and smaller as compared with the case where the oxide photocatalyst is configured in layers.
[0013]
In the invention which concerns on Claim 3, the taking-in part which is a part which takes in the light ray light-emitted by the said ultraviolet LED in the said ultraviolet light guide part has a recessed part, Furthermore, a part of said ultraviolet LED is It is comprised so that it may be located inside the recessed part of the said taking-in part, It is characterized by the above-mentioned. If it does in this way, an ultraviolet-ray can be taken in into a light guide part efficiently.
[0015]
The invention according to claim 4 is characterized in that the ultraviolet light guide part has a reflection part that changes the traveling direction of the incident ultraviolet light emitted by the ultraviolet LED and emits it. In this way, even if the internal structure of the indoor lighting device is complicated, the oxide photocatalyst can be easily irradiated with ultraviolet rays.
[0016]
The invention according to claim 5 is characterized in that the ultraviolet light guide part has a converging part for converging the ultraviolet light emitted and incident by the ultraviolet LED to irradiate the oxide photocatalyst. If it does in this way, even if it is a place where an odor component tends to stay, it can deodorize effectively.
[0017]
The invention according to claim 6 is characterized in that the ultraviolet light guide part emits the ultraviolet light emitted and incident by the ultraviolet LED to irradiate the oxide photocatalyst. If it does in this way, the deodorizing action by an oxide photocatalyst can be exhibited in a wide range, and it can deodorize effectively.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments to which the present invention is applied will be described below with reference to the drawings. Needless to say, the embodiments of the present invention are not limited to the following examples, and can take various forms as long as they belong to the technical scope of the present invention.
[0021]
FIG. 1 is a side sectional view of a position where an overhead module 1 is mounted on a ceiling surface in a vehicle interior. FIG. 2 is a view of the overhead module 1 mounted on the ceiling surface in the vehicle compartment as viewed from below. FIG. 3A is an explanatory view for explaining the structure of the optical fiber, and FIG. FIG. 4A is a side cross-sectional view of the fiber on the UV LED side, and FIG. 4A is an explanatory diagram illustrating the overhead module 1 and the optical fiber attached to the ceiling surface of the vehicle. Hereinafter, in this vehicle 9, the forward direction (right side in FIG. 1) of the vehicle 9 is referred to as “front side”, and the backward direction (left side in FIG. 1) of the vehicle 9 is also referred to as “rear side”. Further, the right side and the left side of the vehicle 9 when the front side is viewed from the rear side of the vehicle 9 are referred to as “right side” and “left side”, respectively.
[0022]
As shown in FIG. 1, the vehicle 9 has a passenger compartment 9d. A ceiling surface 9a is formed in the upper part of the passenger compartment 9d, and a room mirror 9b is attached to the front part of the passenger compartment 9d. Two sun visors 9c and 9c are attached to the rear surface of the room mirror 9b on the ceiling surface 9a. Furthermore, the overhead module 1 is attached between the two sun visors 9c, 9c on the ceiling surface 9a.
[0023]
[Description of Configuration of Overhead Module 1]
The overhead module 1 includes, in order from the rear side to the front side on the passenger compartment 9d side, a glasses case 10 for storing glasses, a reading lamp 12 for illuminating the passenger compartment 9d, and various switches 16, 16, and 16. Furthermore, reading light switches 14 and 14 are provided on the right side of the reading light 12. The overhead module 1 has a built-in microphone 3 on the left front side. The microphone 3 converts the collected sound into an audio signal, and the audio signal is converted into a mobile phone or a car navigation device or other audio. It is sent to the signal input device.
[0024]
The reading lamp 12 has an ultraviolet LED 12a therein, and is configured to turn on or off the ultraviolet LED 12a by operating the reading lamp switch 14. In addition, you may make it have an ultraviolet lamp instead of ultraviolet LED12a. The ultraviolet LED 12a corresponds to a light emitting unit.
[0025]
[Description of Configuration of Optical Fiber 20]
Now, both ends of the optical fiber 20 arranged in a U-shape are attached to the rear part of the overhead module 1. As shown in FIG. 4A, the central portion of the optical fiber 20 is attached to the ceiling surface 9a by a mounting bracket (not shown). At this time, a predetermined gap (for example, 10 mm) is provided between the ceiling 9 a and the optical fiber 20.
[0026]
As shown in FIG. 3A, the optical fiber 20 has a single-layer structure, and its cross section is formed in a circular shape, and can radiate and emit incident ultraviolet rays. Further, a fluorescent paint is applied to the lower portion 20a of the surface of the optical fiber 20 when attached to the ceiling surface 9a. Further, as shown in FIG. 3B, a recess 20b is formed at one end of the optical fiber 20, and the light emitting portion of the ultraviolet LED 12a is positioned inside the recess 20b in the overhead module 1. It is arranged. The optical fiber 20 corresponds to a light guide part and a fluorescent part, and the concave part 20b corresponds to a take-in part.
[0027]
[Description of other configurations]
Now, photocatalyst particles such as titanium dioxide (TiO ₂ ) are applied to the vicinity of the portion where the optical fiber 20 is disposed on the ceiling surface 9a of the passenger compartment 9d (see FIG. 4A). The ceiling surface 9a corresponds to an oxide photocatalyst.
[0028]
[Description of Operation of Overhead Module 1]
Next, the operation of the overhead module 1 will be described with reference to FIGS. 2, 3A, 3B, and 4A.
First, when the reading lamp 12 is turned off, when the reading lamp switch 14 is operated, the ultraviolet LED 12a is energized, and the energized ultraviolet LED 12a emits ultraviolet light. The ultraviolet light emitted by the ultraviolet LED 12a enters the optical fiber 20 from one end of the optical fiber 20, as shown in FIG. Then, the ultraviolet rays incident from one end of the optical fiber 20 are emitted from the surface of the optical fiber 20 as follows.
[0029]
(A) Of these, the ultraviolet rays emitted from the lower portion 20a when attached to the ceiling surface 9a of the surface of the optical fiber 20 are converted into visible light by the fluorescent paint when emitted. This visible light illuminates the passenger compartment 9d.
(B) In addition, ultraviolet rays emitted from a portion other than the lower portion 20a when the optical fiber 20 is attached to the ceiling surface 9a irradiates the photocatalyst particles applied to the ceiling surface 9a. Then, hydroxyl groups are generated by the reaction between the ultraviolet rays and the photocatalyst particles, and the generated hydroxyl groups oxidize and decompose odor components in the air to change them into odorless substances.
[0030]
[effect]
The overhead module 1 of the present embodiment has a lighting function and a deodorizing function. As a result, a deodorizing function is imparted to the overhead module 1 that is already in harmony with the ceiling surface 9a of the vehicle 9, so that the overhead module 1 can be harmonized with the interior of the passenger compartment 9d as a deodorizing device.
[0031]
[Another embodiment]
(1) Although the present invention is applied to the overhead module 1 attached to the ceiling surface 9a of the vehicle 9 in the above embodiment, the present invention is not limited to this, and the room lamp installed in the passenger compartment 9d of the vehicle 9 or the building The present invention may be applied to an indoor lighting device installed indoors. The room lamp and the indoor lighting device thus configured have a lighting function and a deodorizing function. As a result, a deodorizing function is imparted to the room lamp and the indoor lighting device that are already in harmony with the interior of the vehicle and the building, so that the interior of the passenger compartment 9d and the interior of the building can be obtained using the room lamp and the indoor lighting device as a deodorizing device. Can be harmonized with.
[0032]
(2) In the above embodiment, the ultraviolet light emitted from the ultraviolet LED 12a of the reading lamp 12 is incident on the optical fiber 20, but the present invention is not limited to this, and the ultraviolet light emitted from another ultraviolet LED provided in the overhead module 1 is used. May be configured to enter the optical fiber 20. Even if comprised in this way, there exists an effect similar to the said Example.
[0033]
(3) In the above embodiment, the photocatalyst particles are applied to the ceiling surface 9a. However, the present invention is not limited to this, and the photocatalyst particles are applied to the components of the overhead module 1 or other parts of the passenger compartment 9d. Also good. Moreover, you may attach to the ceiling surface 9a etc. what comprised the photocatalyst particle in the layer form. Even if comprised in this way, there exists an effect similar to the said Example.
[0034]
(4) In the above embodiment, the optical fiber 20 is used for the light guide portion, but the present invention is not limited to this. For example, a material having a high transparency and a low hardness such as glass fiber or acrylic resin fiber formed in a linear shape. If so, it can be used as a light guide.
(5) In addition, as shown in FIG. 3C, an inclined portion 20 c that is inclined with respect to the traveling direction of the ultraviolet light incident on the optical fiber 20 may be provided at the tip of the optical fiber 20. This inclined part 20c acts as follows. That is, when the ultraviolet light emitted from the ultraviolet LED 12a and incident on the optical fiber 20 hits the inclined portion 20c, the traveling direction thereof changes according to the inclination angle of the inclined portion 20c. This inclined part 20c corresponds to a reflecting part. In this way, even when it is desired to irradiate ultraviolet rays to a narrow place, ultraviolet rays can be easily irradiated to such narrow places by adjusting the fixing condition of the tip of the optical fiber 20 and the inclination angle of the inclined portion 20c. it can.
[0035]
(6) Although the cross-sectional shape of the optical fiber 20 of the above embodiment is formed in a circular shape, the configuration is not limited to this as long as the ultraviolet light incident on the optical fiber 20 is diverged and emitted. The cross-sectional shape may be variously formed such as a semicircle, a triangle, or a quadrangle.
[0036]
Moreover, you may comprise so that the ultraviolet-ray which injected into the optical fiber 20 may be converged and emitted. As an example, as shown in FIG. 3D, a flat surface 20d having a grain surface along the longitudinal direction is formed on the optical fiber 20 having a circular cross-sectional shape. In this way, when it is desired to irradiate more ultraviolet rays such as in a narrow place, the ultraviolet rays can be focused and irradiated.
[0037]
(7) In the above-described embodiment, the optical fiber 20 is fixed to the ceiling surface 9a with the mounting bracket. However, the present invention is not limited to this. For example, as shown in FIG. The sheet 21 may be fixed so as to cover from below. In this case, instead of applying the fluorescent paint on the surface of the optical fiber 20, the fluorescent paint may be applied on the surface of the sheet 21.
[0038]
(8) In the above embodiment, one overhead module 1 and one optical fiber are attached to the ceiling surface 9a of the vehicle 9. However, the present invention is not limited to this, and as shown in FIGS. As described above, by attaching a plurality of overhead modules 1 to the ceiling surface 9 a of the vehicle 9, the optical fiber may be routed in a wide part of the ceiling surface 9 a. In this case, a plurality of overhead modules 1 may be connected by an optical fiber 22 as shown in FIG. Further, as shown in FIGS. 4C and 4D, a plurality of optical fibers 24 and 26 may be attached to a wide range of the ceiling surface 9a. Further, as shown in FIG. 4C, the optical fiber 24 may be bent and attached to a wide part of the ceiling surface 9a. If it does in this way, a deodorizing function and an illumination function are realizable in a wide part in ceiling surface 9a.
[Brief description of the drawings]
FIG. 1 is a side sectional view of a position where an overhead module is mounted on a ceiling surface in a vehicle compartment.
FIG. 2 is a view of an overhead module attached to a ceiling surface in a vehicle compartment as viewed from below.
3A is an explanatory diagram for explaining the structure of an optical fiber, FIG. 3B is a side sectional view of the optical fiber on the side of the ultraviolet LED, and FIG. 3C is the opposite side of the optical fiber on the side of the ultraviolet LED. It is side sectional drawing of a side, (d) is explanatory drawing (1) explaining the structure of the optical fiber of another Example, (e) is explanatory drawing (2) explaining the structure of the optical fiber of another Example ).
4A is an explanatory diagram for explaining an overhead module and an optical fiber attached to a ceiling surface of a vehicle, and FIG. 4B is an overhead module and an optical fiber of another embodiment attached to the ceiling surface of the vehicle. FIG. 1C is an explanatory diagram (1), FIG. 2C is an explanatory diagram (2) illustrating an overhead module and an optical fiber of another embodiment attached to the ceiling surface of the vehicle, and FIG. It is explanatory drawing (3) explaining the overhead module and optical fiber of the other Example attached to the surface.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Overhead module, 3 ... Microphone, 9 ... Vehicle, 9a ... Ceiling surface, 9b ... Room mirror, 9c ... Sun visor, 9d ... Boarding room, 10 ... Glasses putting, 12 ... Reading light, 12a ... Ultraviolet LED, 14 ... Reading light switch, 16 ... various switches, 20, 22, 24, 26 ... optical fiber, 20a ... the lower part of the surface of optical fiber 20 when attached to ceiling surface 9a, 20b ... recess, 20c ... Inclined part, 20d ... Plane with grain surface, 21 ... Sheet

Claims (6)

  It includes an ultraviolet LED that emits ultraviolet light, and includes an overhead module disposed on the vehicle front side of the ceiling surface of the vehicle. The overhead module extends from the end of the overhead module toward the rear of the vehicle, and the ultraviolet light of the ultraviolet LED enters. In the light guide part having an ultraviolet light guide part and extending from the end of the overhead module toward the rear of the vehicle, a fluorescent part for converting the ultraviolet light into visible light is provided on the surface opposite to the ceiling surface. An interior lighting unit for a vehicle, comprising an interior lighting unit, wherein an oxide photocatalyst is disposed on a portion of the ceiling surface irradiated with ultraviolet rays emitted from the light guide unit.   The vehicle interior lighting device according to claim 1,
  The vehicle interior lighting device, wherein the oxide photocatalyst is configured by applying photocatalyst particles to the ceiling surface.   The vehicle interior lighting device according to claim 1 or 2,
  In the ultraviolet light guide part, the intake part, which is a part that takes in the light emitted by the ultraviolet LED, has a recess, and a part of the ultraviolet LED is inside the recess of the intake part. It is comprised so that it may be located in the interior lighting apparatus for vehicles.   In the vehicle interior lighting device according to any one of claims 1 to 3,
  The vehicle interior lighting device, wherein the ultraviolet light guide part includes a reflection part that changes the traveling direction of incident ultraviolet light emitted by the ultraviolet LED and emits the ultraviolet light.   In the vehicle interior lighting device according to any one of claims 1 to 4,
  The vehicle interior lighting device, wherein the ultraviolet light guide part has a converging part for converging the incident ultraviolet light emitted from the ultraviolet LED and irradiating the oxide photocatalyst.   In the vehicle interior lighting device according to any one of claims 1 to 5,
  The vehicle interior lighting device, wherein the ultraviolet light guide unit emits ultraviolet light emitted and incident by the ultraviolet LED and irradiates the oxide photocatalyst.

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