JP2018075950A - Illumination structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illumination structure for a vehicle capable of improving design in a vehicle room.SOLUTION: An illumination structure comprises a ceiling interior material 12 and an illumination device 20 provided in the ceiling interior material 12, and the ceiling interior material 12 comprises a light emission part 13, and the illumination device 20 comprises an LED 21 and a cover member 30, and the cover member 30 comprises a conversion transmission part 31 and a light reflection part 38, and is displaceably constituted between a first position P1 and a second position P2 of going away in the optical axis LA direction from the LED 21 as compared with the first position P1, and the ultraviolet light transmits through the conversion transmission part 31 in a state where the cover member 30 exists in the first position P1, so that the visible light can be applied toward the cabin inside 10A, and the ultraviolet light applied to the light reflection part 38 is reflected toward the light emission part 13 in a state where the cover member 30 exists in the second position P2.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an illumination structure for a vehicle.

  Conventionally, the thing of the following patent document 1 is known as a lighting structure for vehicles. The vehicle interior light described in Patent Document 1 is configured to reflect the emitted light from the light emitting diode to the outer lens on the reflecting surface of the reflecting member.

JP 2009-67097 A

  In recent years, there has been a growing need for improving the design characteristics of vehicle interiors. However, the vehicle interior light described in Patent Document 1 has a room for improvement in that the lighting mode is monotonous and the design of the vehicle interior is improved.

  This invention is completed based on the above situations, Comprising: It aims at providing the illumination structure for vehicles which can improve the design property in a vehicle interior.

  The vehicle lighting structure of the present invention includes a vehicle interior material and a lighting device provided in the vehicle interior material, and the vehicle interior material is excited by ultraviolet light and emits light by fluorescence. The illumination device is arranged in a posture with its optical axis directed toward the interior of the vehicle and capable of irradiating ultraviolet light to an irradiation range centered on the optical axis; and the light source A cover member that covers the interior of the vehicle from the inside of the vehicle, and the cover member overlaps the light source in the optical axis direction and transmits ultraviolet light emitted from the light source while converting it into visible light. And a light reflecting portion arranged around the conversion and transmitting portion and capable of reflecting the ultraviolet light irradiated from the light source, and a first position and the first position The distance from the light source in the direction of the optical axis relative to the position In the state where the cover member is in the first position, the ultraviolet light is transmitted through the conversion transmission part. In the state in which the visible light can be irradiated toward the vehicle interior and the cover member is in the second position, the light reflecting portion is disposed within the irradiation range of the light source, and the light reflecting portion The ultraviolet light applied to the light is reflected toward the light emitting part, so that the light emitting part can emit light.

  According to the said structure, when a cover member exists in a 1st position, visible light can be directly irradiated toward a vehicle interior. When the cover member is in the second position, the ultraviolet light from the light source can be directed to the light emitting part of the vehicle interior material, and the light emitting part can be caused to emit light. In this way, by displacing the cover member relative to the light source, it is possible to switch between a mode in which visible light is directly irradiated and a mode in which the light emitting unit emits light, thereby improving the design of the vehicle interior. Can be made.

  In the above-described configuration, the conversion transmission portion is configured to cover the entire irradiation range of the light source from the vehicle interior side in a state where the cover member is in the first position, and the light reflection portion is The surface of the cover member on the light source side may be provided on an inclined surface that inclines toward the vehicle compartment as the distance from the conversion transmission portion increases.

  According to such a configuration, the amount of visible light irradiated toward the vehicle interior is increased at the first position as compared with a configuration in which the conversion transmission unit covers only a part of the irradiation range of the light source. Can do. Furthermore, the light reflecting portion is provided on an inclined surface that is inclined toward the vehicle interior as the distance from the conversion transmitting portion increases. For this reason, compared with the case where the light reflecting portion is formed on a plane parallel to the vehicle interior material, the irradiation of the ultraviolet light reflected at the light reflecting portion and applied to the vehicle interior material at the second position. The range can be widened.

  ADVANTAGE OF THE INVENTION According to this invention, the lighting structure for vehicles which can improve the design property in a vehicle interior can be provided.

The side view which shows a vehicle provided with the illuminating device which concerns on Embodiment 1 of this invention. A plan view of the ceiling interior material installed with the lighting device as seen from the vehicle interior side Plan view showing lighting device Sectional drawing of the illuminating device in the state which has a cover member in a 1st position (corresponding to the figure cut | disconnected by the IV-IV line of FIG. 3) Sectional drawing of the illuminating device of a state which has a cover member in a 2nd position Sectional drawing which shows the coupling | bonding mechanism of an illuminating device (corresponding to the figure cut | disconnected by the VI-VI line of FIG. 3) Front view showing coupling mechanism of lighting device Sectional drawing of the illuminating device which concerns on Embodiment 2 (state which has a cover member in a 2nd position) Sectional drawing which looked at the light reflection part in a cover member from the vehicle compartment outer side (corresponding to the figure cut | disconnected by the IX-IX line of FIG. 8) Sectional drawing of the illuminating device which concerns on Embodiment 3 (state which has a cover member in a 2nd position)

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. In the present embodiment, as the vehicle lighting structure 11, a vehicle including a ceiling interior material 12 (vehicle interior material) of the vehicle 10 and a lighting device 20 provided on the ceiling interior material 12 is illustrated.

  As shown in FIGS. 1 and 2, the ceiling interior material 12 is disposed on the side of the roof panel in the vehicle interior (vehicle interior) 10 </ b> A and constitutes a ceiling portion of the vehicle interior 10 </ b> A. The ceiling interior material 12 may be called roofing or the like. A lighting device 20 is provided near the center of the ceiling interior material 12. The ceiling interior material 12 has a light emitting unit 13 that is excited by ultraviolet light and emits light by fluorescence around the lighting device 20.

  For example, the light emitting unit 13 is formed into a coating film by applying a fluorescent paint containing a phosphor excited by ultraviolet rays in a wavelength range of about 360 nm to 400 nm to the design surface 12A of the ceiling interior material 12. Moreover, the light emission part 13 can also be comprised by weaving the fiber containing the fluorescent substance excited by the same wavelength range in the skin material which comprises 12 A of design surfaces. As the phosphor, one kind of phosphor may be used, or various kinds of phosphors emitting light of different colors may be used in appropriate combination. As shown in FIG. 2, a plurality of light emitting units 13 are formed in a region surrounding the illumination device 20. In addition, in this embodiment, although the light emission part 13 illustrates what is a star pattern, it is not limited to this. The light emitting unit 13 may be a logo mark or the like, and may be formed in a solid shape in a region surrounding the periphery of the lighting device 20.

  As shown in FIGS. 3 and 4, the lighting device 20 includes an LED 21 (light source), a cover member 30, an LED substrate 23 on which the LED 21 is mounted, and a fixing that fixes the LED substrate 23 to the ceiling interior material 12. Unit 22.

  As shown in FIG. 4, the LED 21 is arranged in such a posture that its optical axis LA is directed toward the vehicle interior side, and is configured to be able to irradiate the irradiation range 21 </ b> B centering on the optical axis LA with ultraviolet light. ing. The “optical axis LA” as used herein refers to an axis that coincides with the traveling direction of the light having the highest intensity (peaks) out of the light emitted from the LED 21. The LED 21 is a so-called top surface light emitting type in which the light emission surface 21A faces downward (the side opposite to the LED substrate 23 side), and its optical axis LA coincides with the normal direction to the light emission surface 21A. The Further, the diffusion angle of the LED 21 is, for example, a medium angle to a wide angle of 20 ° or more with respect to the optical axis LA. That is, the irradiation range 21B of the LED 21 becomes wider toward the lower side (vehicle interior side).

  The LED 21 is configured to irradiate ultraviolet rays in a predetermined wavelength range capable of exciting the phosphor of the light emitting unit 13, for example, a wavelength range of about 360 nm to 400 nm. In addition, it has been confirmed that such ultraviolet rays from the LED 21 do not affect the human skin and the like.

  As shown in FIG. 4, the LED substrate 23 is fixed to the fixing portion 22 in a form parallel to the design surface 12 </ b> A of the ceiling interior material 12. The LED board 23 is provided with a wiring pattern (not shown), and power can be supplied to the LED 21 via the wiring pattern.

  The fixing portion 22 has a rectangular tube shape, and is fixed to the roof panel or the ceiling interior material 12 via an attachment portion (not shown). The fixing part 22 is opened on both upper and lower sides, and the LED substrate 23 is attached in such a manner as to close the opening of the fixing part 22 from above. In addition, the light emitted from the LED 21 is emitted downward from the opening of the fixed portion 22.

  As shown in FIG. 4, the cover member 30 is disposed on the side of the vehicle interior 10 </ b> A with respect to the LED 21, and is disposed so as to cover the LED 21 from the vehicle interior side. In other words, the LED 21 is accommodated in a case constituted by the fixing portion 22 and the cover member 30. The cover member 30 has a generally shallow dish shape that is rectangular in plan view as a whole. The cover member 30 includes a cover main body portion 33 made of an opaque synthetic resin and a conversion transmission portion 31 provided at the center of the cover main body portion 33. A light reflecting portion 38 is formed around the conversion transmitting portion 31 on the inner surface (the surface on the ceiling interior material 12 side) of the cover main body portion 33.

  As shown in FIGS. 4 and 5, the cover main body portion 33 is fixed around the inclined surface portion 34 having an inclined surface portion 34 having an inclined surface 34 </ b> A that is inclined toward the vehicle interior 10 </ b> A as the distance from the conversion transmission portion 31. A peripheral wall portion 35 erected in a rectangular tube shape so as to surround the portion 22, and an umbrella-shaped portion 36 provided in an umbrella shape so as to spread outward from the vehicle lower end portion of the peripheral wall portion 35. The conversion transmission part 31 is provided in the opening formed in the center part of the inclined surface part 34, and the light reflection part 38 is formed in the inclined surface part 34 (around the conversion transmission part 31).

  As shown in FIG. 4, the conversion transmission unit 31 overlaps the LED 21 in the direction of the optical axis LA, and is configured to transmit the irradiated ultraviolet light into the vehicle compartment while converting it into visible light. Specifically, the conversion transmission part 31 consists of synthetic resin (for example, acrylic resin) which has translucency, and the fluorescent substance which converts the ultraviolet light from LED21 into visible light is contained in the inside. Moreover, the conversion transmission part 31 is provided with an ultraviolet light filter (not shown) that transmits visible light while cutting ultraviolet light on the surface on the vehicle interior 10A side.

  The light reflecting portion 38 is configured to reflect the irradiated ultraviolet light. Specifically, the light reflecting portion 38 has excellent light reflectivity because its surface color is, for example, white, and can efficiently reflect the ultraviolet light from the LED 21. ing. The light reflecting portion 38 is formed into a coating film by applying a white pigment such as titanium oxide to the inclined surface 34A.

  The light reflecting portion 38 is formed on an inclined surface 34 </ b> A that is a surface on the LED 21 side of the cover member 30. The inclined surface portion 34 constituting the inclined surface 34A has an inverted mortar shape, and the inclined surface 34A faces the vehicle upper side (the ceiling interior material 12 side) and the outside of the cover member 30 (the peripheral wall portion 35 side). ing. The angle of the inclined surface 34A is set to an angle at which the ultraviolet light applied to the light reflecting portion 38 can be reflected toward the region where the light emitting portion 13 of the ceiling interior material 12 is formed (the region indicated by shading in FIG. 2). ing.

  The cover member 30 has a first position P1 (see FIG. 4) and a second position P2 (see FIG. 5) that is farther away from the LED 21 in the optical axis LA direction (downward) than the first position P1. It is possible to displace between them (up and down movement).

  In a state where the cover member 30 is at the first position P1, the conversion / transmission part 31 is configured to cover the entire irradiation range 21B of the LED 21 from the vehicle interior 10A side. That is, in the state where the cover member 30 is at the first position P1, the emitted light (ultraviolet light) from the LED 21 is irradiated on the conversion / transmission part 31, but is hardly irradiated on the light reflection part 38. It is said. The conversion transmission portion 31 has a circular dome shape (a bowl shape) that projects toward the vehicle interior 10A. For this reason, the irradiation range 21B can be completely covered with a smaller area.

  As described above, the irradiation range 21B of the LED 21 becomes wider as it goes downward. For this reason, in the state where the cover member 30 is in the second position P2, in addition to the conversion transmission part 31, the light reflection part 38 is arranged in the irradiation range 21B of the LED 21. For this reason, the emitted light from the LED 21 is applied to both the conversion transmission unit 31 and the light reflection unit 38.

  In addition, the peripheral wall portion 35 is formed with a peripheral wall portion side transmitting portion 35C that can transmit light. Thereby, the ultraviolet light reflected by the light reflection part 38 through the peripheral wall part side transmission part 35 </ b> C can be directed to the light emitting part 13. The peripheral wall portion side transmission portion 35 </ b> C is, for example, a hole formed through the peripheral wall portion 35. In addition, the form of the surrounding wall part side transmission part 35C is not limited to a hole, What is necessary is just a structure which can permeate | transmit light. For example, the peripheral wall portion 35 itself may be formed of a translucent resin material to be a peripheral wall portion side transmission portion. In addition, since the ultraviolet light reflected by the light reflecting portion 38 and directed toward the direction other than the ceiling interior material 12, for example, toward the vehicle interior 10A, is shielded by the umbrella-shaped portion 36, it is not irradiated toward the vehicle interior 10A. It has become.

  Moreover, the illuminating device 20 is provided with the lock mechanism 24 which fixes the cover member 30 in the 1st position P1. The lock mechanism 24 is a so-called alternate type lock mechanism, and in this embodiment, a heart cam type mechanism is exemplified. As shown in FIGS. 6 and 7, the lock mechanism 24 includes a substantially cam-shaped heart cam groove 24 </ b> A formed in the fixed portion 22 and a lock bar 24 </ b> B attached to the peripheral wall portion 35.

  The lock bar 24 </ b> B is rotatably attached to the peripheral wall portion 35 at a lower end portion thereof. The upper end portion of the lock bar 24B is a lock pin 24C fitted into the heart cam groove 24A. In the fixing portion 22, a portion surrounded by the heart cam groove 24A is a heart cam 24D. The lock pin 24C is movable in the heart cam groove 24A in the clockwise direction of FIG. 7 with respect to the heart cam 24D.

  When the lock pin 24C is at the lower end 24F of the heart cam groove 24A (the state shown in FIGS. 6 and 7), the cover member 30 is in the second position P2. From this state, when the operator presses and raises the cover member 30 from below, the lock pin 24C rises while passing the left side of the heart cam 24D in FIG. 7, and fits into the upper recess 24E of the heart cam groove 24A. . In FIG. 7, the lock pin 24 </ b> C in a state of being fitted in the upper concave portion 24 </ b> E is indicated by a two-dot chain line and denoted by reference numeral 24 </ b> D. When the lock pin 24C is fitted into the upper concave portion 24E, the lowering of the cover member 30 is restricted. Thereby, the cover member 30 is fixed at the first position P1.

  When the user of the lighting device 20 presses the cover member 30 from below while the cover member 30 is at the first position P1, the lock pin 24C comes out of the upper recess 24E and passes the right side of the heart cam 24D in FIG. While descending, it reaches the lower end 24F of the heart cam groove 24A. Along with this, the lock by the lock mechanism 24 is released, and the cover member 30 can be lowered. Thereby, the user of the illuminating device 20 can be easily displaced between the 1st position P1 and the 2nd position P2 by pressing the cover member 30. FIG. Further, the lock mechanism 24 is not limited to the above-described mechanism and can be changed as appropriate. For example, when the fixed portion 22 and the peripheral wall portion 35 are cylindrical, a Kern type knock mechanism used for a knock type hall pen or the like can be used as the lock mechanism.

  In addition, when the cover member 30 is in the second position P2, the stopper mechanism 25 restricts the lowering of the cover member 30. As shown in FIG. 5, the stopper mechanism 25 includes a locked portion 22 </ b> B provided at the lower end portion of the fixed portion 22 and a locking portion 35 </ b> B provided at the upper end portion of the peripheral wall portion 35. The locking portion 35B has, for example, a claw shape that protrudes from the inner surface of the peripheral wall portion 35. When the locking portion 35B is locked to the locked portion 22B, the lowering of the cover member 30 is restricted.

  Further, as shown in FIG. 5, a groove portion 22 </ b> C extending in the vertical direction is formed on the side surface of the fixed portion 22. The locked portion 22B has a step shape and constitutes the bottom of the groove 22C. When the cover member 30 moves up and down, the engaging portion 35B moves in the groove portion 22C so that the vertical movement of the cover member 30 is guided.

  In the vehicle illumination structure 11 of the present embodiment, when the cover member 30 is at the first position P1, the ultraviolet light passes through the conversion / transmission part 31, so that visible light can be emitted toward the vehicle interior 10A. Is done. In addition, when the cover member 30 is at the second position P2, the light emitting unit 13 can emit light by reflecting the ultraviolet light applied to the light reflecting unit 38 toward the light emitting unit 13.

  Next, the operation of the vehicle illumination structure 11 will be described. First, in a situation where the illuminance around the lighting device 20 is high (daytime or the like) and the LED 21 is turned off, when the cover member 30 is disposed at the first position P1, the lighting device 20 It looks like a room light. Further, in this state, the light emitting portion 13 of the ceiling interior material 12 is difficult for the passenger to see.

  Next, an operation when the LED 21 is turned on when the illuminance around the lighting device 20 is low (such as at night) will be described. The LED 21 may be turned on and off manually with a switch or the like (not shown), or may be configured in conjunction with an operation such as opening and closing a door.

  When the cover member 30 is in the first position P1, as shown in FIG. 4, most of the ultraviolet light from the LED 21 is emitted toward the conversion transmission portion 31. Then, the ultraviolet light incident on the conversion transmission part 31 is changed into visible light by the phosphor in the process of passing through the inside, and then emitted from the surface of the conversion transmission part 31 on the vehicle interior 10A side toward the vehicle interior 10A. Is done. In addition, the thing which was not converted into visible light among ultraviolet light is absorbed or reflected by the ultraviolet light filter provided in the surface at the side of the vehicle interior 10A of the conversion transmission part 31, and the situation where 10A of vehicle interiors are irradiated. It is suppressed. By such an aspect, when the cover member 30 is in the first position P1, the lighting device 20 can be used like an indoor lamp that emits visible light.

  When the cover member 30 is at the second position P2, as shown in FIG. 5, the conversion transmission portion 31 moves away from the LED 21 as compared with the first position P1, so that the irradiation range 21B of the ultraviolet light from the LED 21 is achieved. Reaches the light reflecting portion 38 around the conversion transmitting portion 31. And the ultraviolet light which progressed toward the light reflection part 38 among the ultraviolet light from LED21 is reflected by the light reflection part 38, and progresses toward the vehicle exterior and the cover member 30 outward. In FIG. 5, the optical path of the reflected ultraviolet light is schematically indicated by a one-dot chain line.

  The ultraviolet light reflected by the light reflecting portion 38 is transmitted through the peripheral wall portion side transmitting portion 35 </ b> C of the peripheral wall portion 35 and is irradiated on the light emitting portion 13 of the ceiling interior material 12. Then, the light emitting unit 13 is excited by ultraviolet light and enters a light emitting state. At this time, since the light emitting unit 13 exhibits an aesthetic design peculiar to the light emission of the phosphor, a design different from the illumination by the visible light source can be realized. Thus, when the cover member 30 is in the second position P2, the lighting device 20 can be used as indirect illumination for causing the light emitting unit 13 of the ceiling interior material 12 to emit light.

  Then, the effect of the vehicle illumination structure 11 in this embodiment is demonstrated. In the present embodiment, when the cover member 30 is at the first position P1, visible light can be directly irradiated toward the vehicle interior 10A. Moreover, when the cover member 30 exists in the 2nd position P2, the ultraviolet light from LED21 can be directed to the light emission part 13 of the ceiling interior material 12, and the light emission part 13 can be light-emitted. Thus, by displacing the cover member 30, it is possible to switch between a mode in which visible light is directly irradiated and a mode in which the light emitting unit 13 emits light, and the design of the vehicle interior 10 </ b> A can be improved. .

  Moreover, in this embodiment, the conversion transmission part 31 is set as the structure which covers the irradiation range 21B of LED21 over the whole region from the vehicle interior 10A side in the 1st position P1, and the light reflection part 38 is LED21 side in a cover member. Is formed on an inclined surface 34 </ b> A that is inclined toward the vehicle interior as the distance from the conversion / transmission portion 31 increases. For this reason, compared with the structure which the conversion transmission part 31 covers only a part in the irradiation range 21B of LED21, the light quantity of the visible light irradiated toward 10 A of vehicle interior in 1st position P1 may be increased. it can. Furthermore, since the light reflecting portion 38 is formed on the inclined surface 34A, the light reflecting portion 38 is formed at the second position P2 as compared with the case where the light reflecting portion 38 is formed on a surface parallel to the ceiling interior material 12. The irradiation range of the ultraviolet light reflected by 38 and irradiated on the ceiling interior material 12 can be widened. As a result, when the cover member 30 is at the first position P1, the illuminance as the interior light can be sufficient, and when the cover member 30 is at the second position P2, the vehicle interior 10A The design property of can be improved suitably.

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described with reference to FIGS. The illumination device 120 according to the present embodiment is configured such that the cover member 130 at the second position P2 can rotate around the optical axis LA of the LED 21. Note that the basic configuration of the vehicle lighting structure of the present embodiment is the same as that of the first embodiment, and detailed description of the same configurations and operations as those of the first embodiment will be omitted.

  The cover member 130 has a substantially shallow dish shape with a circular shape in plan view as a whole. The fixed portion 122 and the peripheral wall portion 135 have a cylindrical shape that is concentric with the outer shape of the cover member 130, and the inclined surface portion 134 and the umbrella-shaped portion 136 that constitute the cover main body portion 133 have a circular shape in plan view. ing.

  As shown in FIG. 8, the circumferential wall 135 is provided with a gear groove 135A for rotating (spinning) the cover member 130 at the second position P2 in the circumferential direction. The gear groove 135 </ b> A extends along the circumferential direction of the peripheral wall portion 135. A gear 127 that meshes with the gear groove 135A is rotatably provided with an axis extending in the vertical direction as a rotation axis. The gear 127 is configured to be rotatable by driving a servo motor 127A.

  The light reflecting portion 138 has a non-uniform reflecting surface along the periphery of the LED 21. In the present embodiment, as shown in FIG. 9, the light reflecting portion 138 is divided into four regions along the periphery of the LED 21, and the highly reflective region 138 </ b> A having a relatively high light reflectivity and the relatively light reflective property. A low-reflective region 138B having a low height is arranged alternately. Specifically, in the high reflection region 138A, the above-described white pigment such as titanium oxide is applied to increase the light reflectivity, and in the low reflection region 138B, the resin constituting the cover main body 133 is exposed. As a result, the light reflectivity is relatively low.

  In the present embodiment, the drive of the servo motor 127A causes the cover member 130 (and thus the light reflecting portion 138) at the second position P2 to rotate about the optical axis LA of the LED 21. Then, in the ceiling interior material 12, the region irradiated with the ultraviolet light reflected by the high reflection region 138A and the region irradiated with the ultraviolet light reflected by the low reflection region 138B change as the cover member 130 rotates. . Thereby, the dynamic design which the light emission intensity of each light emission part 13 changes with time is realizable.

  In the present embodiment, the light reflecting portion 138 may have a non-uniform reflecting surface along the periphery of the LED 21. For example, if the light reflecting portion 138 has a random unevenness, the intensity of the ultraviolet light applied to the light emitting portion 13 changes randomly with the rotation of the cover member 130. However, it is possible to realize a dynamic design that changes from moment to moment for each portion of the light emitting portion 13.

  Moreover, it is good also as what revolves around LED21 while the cover member 130 rotates. That is, the cover member 130 may be configured to move like a rotary pendulum. With such a configuration, the irradiation range of the ultraviolet light applied to the light emitting unit 13 changes with the rotation (rotation and revolution) of the cover member 130, so that the light emission range of the light emitting unit 13 changes dynamically. Design can be realized. In the second embodiment, the entire cover member 130 may not be rotated, but only the light reflecting portion 138 may be rotated with respect to the LED 21.

<Embodiment 3>
Next, Embodiment 3 of the present invention will be described with reference to FIG. In the illumination device 220 of the present embodiment, the cover member 230 is configured to be continuously displaceable at the first position P1 and the second position P2. Note that the basic configuration of the vehicle lighting structure of the present embodiment is the same as that of the first embodiment, and detailed description of the same configurations and operations as those of the first embodiment will be omitted.

  The locking mechanism 224 of the present embodiment includes a pair of hole portions 222A formed on the wall surfaces facing each other in the fixing portion 122, and a pair of claw portions 235B that respectively fit in the pair of hole portions 222A in the peripheral wall portion 135. It consists of The hole portion 222A has an inverted L shape, and includes a horizontal hole portion that extends along the circumferential direction of the peripheral wall portion 135, and a vertical hole portion that extends downward from one end of the horizontal hole portion. . In a state where the claw portion 235B is fitted in the lateral hole portion in the hole portion 222A, the lowering of the cover member 230 is restricted, and the cover member 230 is locked at the first position P1. Then, by rotating the cover member 230 from the locked state and moving the claw portion 235B from the horizontal hole portion to the vertical hole portion, the cover member 230 can be lowered.

  In a state where the claw portion 235B is fitted in the vertical hole portion, the cover member 230 can move up and down. The peripheral wall portion 135 is provided with a gear groove 235A for vertically moving the cover member 230 between the first position P1 and the second position P2 in a state where the claw portion 235B is fitted in the vertical hole portion. ing. The gear groove 235 </ b> A extends along the cylinder axis direction (vertical direction) of the peripheral wall portion 135. The gear 227 that meshes with the gear groove 235A can be driven by the servo motor 227A. Accordingly, the cover member 230 can be lowered by, for example, rotating the servo motor 227A normally, and the cover member 230 can be raised by reversing the servo motor 227A.

  In this embodiment, by driving the servo motor 227A, the cover member 230 can be repeatedly moved continuously between the first position P1 and the second position P2. Thereby, the dynamic design which the light emission area | region of the light emission part 13 expands and contracts to the circumference | surroundings centering on the illuminating device 220 is realizable.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, a single light source (LED 21) is exemplified, but a plurality of light sources may be provided. Further, the light source is not limited to the LED, and any light source capable of emitting ultraviolet light may be used.
(2) The mechanism for displacing the cover member between the first position and the second position is not limited to that illustrated in the above embodiment, and can be changed as appropriate.
(3) The configuration, shape, and arrangement of the conversion transmission portion are not limited to those exemplified in the above embodiment, and can be changed as appropriate. For example, the conversion transmission part is not limited to a dome shape, and may be a box shape or a flat plate shape.
(4) The configuration, shape, and arrangement of the light reflecting portion are not limited to those exemplified in the above embodiment, and can be changed as appropriate. For example, the light reflecting portion is not limited to the one formed on the inclined surface, and may be formed on a curved surface that forms a shape toward the vehicle interior side as the distance from the conversion transmitting portion increases.
(5) The configuration and shape of the cover member are not limited to those exemplified in the above embodiment, and can be changed as appropriate.
(6) In the above embodiment, the ceiling interior material is exemplified as the vehicle interior material, but the present invention is not limited to this. For example, the vehicle interior material may be a door trim or an instrument panel, or may be an interior material provided on a vehicle (such as a ship or an aircraft) other than a vehicle.
(7) In the above embodiment, the cover member is displaced between the first position and the second position with respect to the light source. However, the present invention is not limited to this. The cover member may be configured to be displaced relative to the light source, and may be configured to displace the light source relative to the cover member.

DESCRIPTION OF SYMBOLS 11 ... Lighting structure for vehicles, 12 ... Ceiling interior material (interior material for vehicles), 13 ... Light emission part, 20, 120, 220 ... Illuminating device, 21 ... LED (light source), 21B ... Irradiation range, 30, 130, 230 ... cover member, 31 ... conversion transmission part, 34A ... inclined surface, 38, 138 ... light reflection part, LA ... optical axis, P1 ... first position, P2 ... second position

Claims (2)

Interior materials for vehicles,
A lighting device provided in the vehicle interior material,
The vehicle interior material has a light emitting portion that is excited by ultraviolet light and emits fluorescence.
The lighting device includes:
A light source that is arranged in a posture with its optical axis directed toward the interior of the vehicle and capable of emitting ultraviolet light to an irradiation range centered on the optical axis;
A cover member for covering the light source from the vehicle interior side,
The cover member is
A conversion / transmission unit that overlaps the light source in the optical axis direction and is capable of transmitting ultraviolet light irradiated from the light source while converting it into visible light;
A light reflecting portion that is arranged around the conversion transmitting portion and capable of reflecting the ultraviolet light emitted from the light source; and
The first position and a second position away from the light source in the optical axis direction as compared to the first position are configured to be relatively displaceable with respect to the light source.
In the state where the cover member is in the first position, the ultraviolet light is transmitted through the conversion transmission portion, and thus the visible light can be irradiated toward the vehicle interior,
In a state where the cover member is in the second position, the light reflecting portion is disposed within the irradiation range of the light source, and the ultraviolet light irradiated on the light reflecting portion is reflected toward the light emitting portion. Thus, the vehicle illumination structure is characterized in that the light emitting part can emit light. In the state where the cover member is in the first position, the conversion transmission portion is configured to cover the entire irradiation range of the light source from the vehicle interior side,
The said light reflection part is provided in the inclined surface which inclines in the form which goes to the said vehicle interior side as it leaves | separates from the said conversion transmission part in the surface by the side of the said light source in the said cover member. Vehicle lighting structure.

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