JP2008094317A - Lighting system for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enhance the convenience of a lighting system for an automobile. <P>SOLUTION: This lighting system 100 for the automobile comprises a housing 10 in which a space SP2 allowing the light emitted to the outside OP1 to pass therethrough is formed, a first emitting mechanism 20 installed in the housing and emitting the light from a first light source 22 from the space SP2 in the housing to the outside OP1, and a second emitting mechanism 30 installed in the housing 10, allowing the light from second light sources 32, 33 to pass in the space SP2 for passing the light from the first light source 22 therethrough in the housing, and emitting the light from the second light sources 32, 33 to areas CO2, CO3 smaller than the emitting area CO1 of the light emitted from the first emitting mechanism 20. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an automotive lighting device in which an irradiation mechanism is provided inside a housing.

  Examples of the illumination device for an automobile include a room lamp that illuminates the interior of the vehicle and a lamp that illuminates the exterior of the vehicle. Lighting devices attached to the interior of automobiles include lamps provided at the front of the ceiling and lamps provided at the center of the ceiling. Depending on the function, the lighting is used for indoor lighting, reading light, and in the dark. There are lights that illuminate your feet. A lighting device attached to the exterior of the car helps the driver when the car is parked in an unlit environment. In many cases, incandescent lamps are used in these lighting devices, but recently, electric lamps such as light emitting diodes (LEDs) have also been used.

Patent Document 1 describes an illumination device that is attached to a ceiling front portion in a vehicle compartment and includes an illumination lamp and a small article storage portion adjacent to the illumination lamp. One illumination lamp used in the illumination device is provided in the lamp case on each of the left and right sides of the accessory storage unit.
Patent Document 2 describes an illuminating device that includes an LED lamp, a design material having a hole having a smaller diameter than the LED lamp, and a means for causing the LED lamp to substantially contact the peripheral wall of the hole. Yes.
Utility Model Registration No. 2568692 JP 2003-45207 A

In the illuminating device described in Patent Document 1, since there is only one type of illumination lamp, it is not possible to switch the illumination irradiation range between when the vehicle interior is desired to be illuminated in a wide range and when only a narrow range is desired.
In the illuminating device described in Patent Document 2, since the light source is one kind of LED lamp, only a narrow range in the passenger compartment can be illuminated.

  This invention is made | formed in view of the said subject, and aims at improving the convenience of the illuminating device for motor vehicles.

In order to achieve the above object, an automotive lighting device according to the present invention includes a housing in which a space through which light to be radiated to the outside passes is formed, and a light source from a first light source provided inside the housing. A first irradiation mechanism for emitting the light from the space inside the housing to the outside; and a light provided from the second light source in a space provided inside the housing and allowing light from the first light source to pass inside the housing. And a second irradiation mechanism that emits light from the second light source to a range narrower than an irradiation range of light emitted from the first irradiation mechanism.
With the above configuration, light in a relatively wide irradiation range and light in a relatively narrow irradiation range are emitted to the outside from the same space inside the housing, so that the wide range and the narrow range can be illuminated with the same lighting device. . Further, since the light having a relatively wide irradiation range and the light having a relatively narrow irradiation range pass through the same space inside the housing and are emitted to the outside, the space inside the housing can be reduced. Therefore, the convenience of the automotive lighting device is improved, and the automotive lighting device can be downsized.

  Here, the irradiation range of the light emitted from the second irradiation mechanism may be completely included in the irradiation range of the light emitted from the first irradiation mechanism, or emitted from the first irradiation mechanism. A range outside the light irradiation range may be included, and in any case, it is included in the light irradiation range emitted from the second irradiation mechanism.

According to the first and eighth aspects of the invention, the convenience of the automotive lighting device can be improved, and the automotive lighting device can be miniaturized.
In the invention according to claim 2, since the light having a relatively wide irradiation range is transmitted through the translucent member and scattered, the light having the relatively narrow irradiation range passes through the opening of the translucent member. A suitable configuration of the first and second irradiation mechanisms can be provided.
In the invention which concerns on Claim 3, since the light made into a comparatively narrow irradiation range passes reliably the opening of a translucent member, the suitable structure of a 2nd irradiation mechanism can be provided.
In the invention according to claim 4, since the light having a relatively wide irradiation range is transmitted through the light guide material and emitted from the inside of the housing to the outside, it is possible to provide a preferable configuration of the first irradiation mechanism. it can.

In the invention according to claim 5, a sense of depth and a three-dimensional feeling are expressed, and it becomes possible to give a high-class feeling to the illumination.
In the invention according to claim 6, since the light having a relatively wide irradiation range is transmitted and scattered through the light transmitting member, the light having a relatively narrow irradiation range is transmitted through the lens of the light transmitting member. A suitable configuration of the first and second irradiation mechanisms can be provided.
In the invention according to claim 7, it is possible to give unexpectedness and fun to the automotive lighting device, and it is possible to reduce the size of the automotive lighting device.
In the invention according to claim 9, since the lighting of the automobile itself can be switched between lighting on and off, the convenience of the automobile lighting apparatus can be further improved.

Hereinafter, embodiments of the present invention will be described in the following order.
(1) Configuration of lighting device for automobile:
(2) Functions and effects of the automotive lighting device:
(3) Modification:

(1) Configuration of lighting device for automobile:
FIG. 1 is a perspective view showing a main part of a main part of an interior of a road traveling vehicle 1 employing an automobile lighting device 100 according to an embodiment of the present invention, FIG. 2 is a front view of the lighting device 100, and FIG. FIG. 4 is a front view of the housing 10 in a state where the second light source and the operation switch are attached, and FIG. 5 is FIG. FIG. 6 is a diagram showing the appearance of the light guide members 36 and 37 as viewed from the front and the A2 direction in FIG. 7, and FIG. 7 is a diagram showing the appearance of the inner translucent cover 40 from the front and the rear. 8 is a front view of the outer translucent cover 50, FIG. 9 is an electrical circuit diagram of the lighting device 100, FIG. 10 is an exploded view of the lighting device 100, and FIGS. 11 and 12 illustrate the operation of the lighting device 100. It is a figure for doing. In FIG. 3, the matte portions 44 and 45 of the inner translucent cover 40 are indicated by thick lines. In FIG. 4, the mounting position of the first light source 22 is indicated by a broken line. Further, in FIG. 10, the housing 10 is viewed in cross-section, and the seal members 15 a and 15 b, the light guide members 36 and 37, and the translucent members 40 and 50 are viewed from the side.

  In FIG. 1, a passenger car 1 centering on a front ceiling portion in the vehicle is illustrated. In the automobile 1, a vehicle body is formed by a vehicle body panel such as a floor panel of a floor portion, a roof panel of a ceiling portion, and a plurality of pillars, and a roof liner interior material 1a is attached to a vehicle compartment SP1 side of the roof panel. The pillar garnish interior material 1b is mounted on the SP1, the windshield 1c is installed on the front side of the driver seat and the passenger seat, side windows 1d are provided on the left and right sides of the driver seat and the passenger seat, and the front edge of the roof liner interior material 1a. Sun visors 1f and 1g are attached to the roof panel on the side of the vehicle compartment SP1. The automobile lighting device 100 is attached to the roof panel between the sun visors 1f and 1g on the vehicle compartment SP1 side of the front edge of the roof liner interior material 1a. The lighting device 100 is disposed at a position that can be reached when an occupant sits in a driver seat or a passenger seat. The illumination device 100 can illuminate a wide range with the overall illumination 20 and irradiate a narrow range with stronger light with the spot illumination 30, so that functions can be properly used depending on the situation and environment where the occupant is placed.

  The illumination device 100 includes a housing 10 in which a space SP2 through which light irradiated to the external OP1 passes is formed, an overall illumination (first illumination mechanism) 20 and a spot illumination (first illumination mechanism) 20 provided in the housing. A second irradiation mechanism) 30. The external OP1 is the vehicle compartment SP1 when the illumination device 100 is provided in the vehicle compartment SP1 as in the present embodiment, and is outside the vehicle when attached to the outside of the vehicle. The overall illumination 20 emits light from the first light source 22 from the space SP2 inside the housing to the outside OP1. The spot illumination 30 transmits light from the second light sources 32 and 33 to the space SP2 through which light from the first light source 22 passes inside the housing, and from an irradiation range CO1 of light emitted from the overall illumination 20. Also, light from the second light sources 32 and 33 is emitted to a narrow range CO2 and CO3.

As shown in FIGS. 3 and 4, the housing 10 is formed in a substantially box shape, and a space SP2 through which light to be irradiated to the external OP1 passes is formed inside, and light that has passed through the space SP2 is emitted to the external OP1. Irradiation openings 12 are formed for this purpose. The housing 10 has a bottom portion 14 facing the irradiation opening 12 across the space SP2, a left side surface portion 16a, a right side surface portion 16b, a front side surface portion 16c, and a rear side surface portion 16d. The parts 14, 16a to 16d are shaped to surround the internal space SP2. Further, operation switches 62 to 64 for receiving an operation for switching whether or not to supply power to the first and second light sources 22, 32, and 33 are attached to the rear portion of the surface of the housing 10.
Each through hole 14c for mounting a plurality of first light sources 22 is formed in the bottom 14 of the housing, and a through hole 14a for mounting the second light source 32 is formed on the left side of the through hole 14c. A through hole 14b for mounting the second light source 33 on the right side of the through hole 14c is formed. Here, the left and right through holes 14 a and 14 b are formed obliquely so as to be closer to the center of the internal space SP <b> 2 toward the opening 12 from the bottom 14. In addition, holes for mounting elastic members 17a and 17b for fixing the translucent cover are formed in the left and right side surface portions 16a and 16b of the housing.

  The housing 10 may be formed by molding a resin molding material such as a thermoplastic resin by injection molding or press molding. Polypropylene or the like is suitably used as the resin constituting the resin molding material for housing molding. Alternatively, a housing may be formed by laminating a skin material such as a nonwoven fabric, a woven fabric, or a knitted fabric on a molded resin molding material.

  The first light source 22 is attached to the bottom through-hole 14c in contact with the bottom 14 of the housing, and is provided in a portion of the housing 10 facing the irradiation opening 12 across the space SP2. The wiring 24 for supplying power to the first light source 22 is drawn out of the internal space SP2 from the through hole 14c and connected to the operation switch 62 of the switch circuit 60. The overall illumination 20 as the first irradiation mechanism includes a first light source 22 and a wiring 24, and emits light from the first light source 22 from the irradiation opening 12 of the housing to the external OP1.

An incandescent bulb called a bulb lamp is preferably used as the first light source 22, but a halogen bulb, a fluorescent lamp, a discharge lamp, a light emitting diode (LED), or the like can also be used. The first light source need only be able to illuminate a wide area of the external OP1, and there is no particular limitation on the number of installation, wattage, and illuminance, and only one may be provided in the housing, or a plurality of the first light sources are provided as shown in the figure. May be. It should be noted that if the type, wattage, illuminance, and number of installations of the first light source are set so that the wide range of the external OP1 can be illuminated evenly, it is suitable as the overall illumination. When using an incandescent bulb as the first light source, for example, a power consumption 5 W type bulb can be used. The color of light emitted from the first light source is preferably a color close to white, but may be a bluish color, a reddish color, or the like.
As shown in FIG. 9, in the present embodiment, three first light sources 22 a to 22 c are mounted inside the housing, and each light source 22 a to 22 c is connected to an operation switch 62 of the switch circuit 60.

The second light sources 32 and 33 are mounted on the back side of the through holes 14a and 14b at the bottom of the housing, respectively, and the first light source 22 and the portion facing the irradiation opening 12 across the space SP2 inside the housing 10 Provided. Wirings 34 and 35 for supplying power to the second light sources 32 and 33 are drawn out from the internal space SP2 through the through holes 14a and 14b, respectively, and are connected to the operation switches 63 and 64 of the switch circuit 60. .
The second light sources 32 and 33 of the present embodiment are provided at positions where the first light source 22 is substantially sandwiched inside the housing 10, and are arranged so that the light guided in the space SP2 approaches each other. The position where the light source 22 is substantially sandwiched is not only the position where the light sources 32, 22, 33 are on a straight line, but also the light source 22 centered on at least one of the plurality of light sources 22 as shown in FIG. 4. It is assumed that the angle θ1 formed by the half line from the light source 32 to the light source 32 and the half line from the light source 22 to the light source 33 is 120 ° or more and less than 180 °. The spot illumination 30 as the second irradiation mechanism includes second light sources 32 and 33, wirings 34 and 35, and light guide materials 36 and 37, and a space SP2 that allows light from the first light source 22 to pass inside the housing. The light from each of the second light sources 32 and 33 is allowed to pass through, and the light from each of the second light sources 32 and 33 is irradiated onto the ranges CO2 and CO3 that are narrower than the irradiation range CO1 of the light emitted from the overall illumination 20. The product is discharged from the opening 12 for use.

As the second light sources 32 and 33, LEDs are preferably used, but incandescent bulbs, halogen bulbs, fluorescent lamps, discharge lamps, and the like can also be used. The second light source need only be able to illuminate a narrow range of the external OP1, and there is no particular limitation on the number of installations, wattage, and illuminance, and only one may be provided in the housing, or a plurality of them are provided as shown in the figure. May be. Note that the type, wattage, illuminance, and number of installations of the second light source are suitable as spot illumination if set so that the narrow range of the external OP1 can be illuminated more brightly than when illuminated by the overall illumination. The brightness of the spot illumination is, for example, 30 lux or more at the occupant's hand while sitting on the seat. The color of the light emitted from the first light source is preferably white, but may be a bluish color, a reddish color, or the like. When an LED is used as the second light source, the emission color can be changed by changing the compound used in the LED element, so that it is possible to provide an illumination color that suits the passenger's preference.
As shown in FIG. 9, in this embodiment, two second light sources 32 and 33 are mounted inside the housing, and the light sources 32 and 33 are connected to operation switches 63 and 64 of the switch circuit 60, respectively.

The inner translucent cover (first translucent member) 40 is provided between the irradiation opening 12 and the first and second light sources 22, 32, 33 inside the housing 10. As shown in FIGS. 3 and 7, claw portions 46 for attaching the cover 40 to the inside of the housing extend to the left and right outer sides at the left and right edge portions 40c and 40d of the cover 40, respectively. On the other hand, for example, elastic members 17a and 17b are attached to the left and right side surface portions 16a and 16b of the housing. As shown in FIGS. 3, 5, and 10, grooves 17 a 1 and 17 b 1 into which the claw portions 46 of the inner translucent cover can be inserted are formed in the elastic members 17 a and 17 b with the longitudinal direction facing the front-rear direction. Grooves 17a2 and 17b2 into which the claw portions 56 of the outer translucent cover can be inserted are formed with the longitudinal direction directed in the front-rear direction. In addition, the member which shows elasticity, such as rubber | gum, is used for an elastic member. Therefore, the cover 40 is attached and fixed inside the housing by inserting the left claw portion 46 into the groove 17a1 of the elastic member and inserting the right claw portion 46 into the groove 17b1 of the elastic member.
Of course, the method of fixing the inner translucent cover inside the housing is not particularly limited, but a method of fixing with a structure that does not easily come off due to vibration or light impact during operation is suitable.
A transparent polycarbonate is preferably used for the cover 40 from the viewpoint of heat resistance and strength, but a transparent molded product obtained by molding a resin molding material such as an acrylic resin or other thermoplastic resin by injection molding or press molding, or the like. Can also be used. The thickness of the cover 40 is about 2 to 4 mm, for example.

As shown in FIG. 3 and FIG. 7, a matte portion 44 whose longitudinal direction is directed in the front-rear direction is formed on the surface (surface on the irradiation opening 12 side) 40 a of the cover 40, and the back surface (bottom portion 14) of the cover 40 is formed. A matte portion 45 is formed on the side surface 40b with its longitudinal direction directed in the front-rear direction. The matte portions 44 and 45 are formed approximately alternately so as not to overlap each other on the front and back sides of the cover 40. The matte portions 44 and 45 are formed by subjecting a transparent plate having gloss on the front and back surfaces to sandblasting at a predetermined position. In the front surface 40a, the glossy portion 44a remains between the matte portions 44, and on the back surface 40b, the glossy portion 45a remains between the matte portions 45.
The inner translucent cover 40 to which the above-described design processing is applied transmits at least part of the light from the first light source 22 while being scattered in the space SP2 inside the housing. Note that the fact that at least part of the light passes through the cover means that all of the light passes through the cover, or a part of the light passes through the cover opening or the periphery, so that only a part of the light passes through the cover. Are included. The same applies to the following.
As described above, the effect of hiding the first light source from the occupant is obtained, and the pattern of the inner translucent cover 40 is reflected on the outer translucent cover 50 by the light from the entire illumination, thereby producing the depth and stereoscopic effect of the entire illumination. It becomes possible to do. The matte part of the inner translucent cover may have a lattice shape or a pattern that gives a curved feel, such as a ripple shape, a spiral shape, or a wave shape, in addition to the stripe pattern alternately on the front and back sides.

Further, the inner translucent cover 40 is formed with openings 42 and 43 through which light from the second light sources 32 and 33 passes in the space SP1 inside the housing. Since the openings 42 and 43 of the present embodiment are provided for penetrating the light guide materials 36 and 37, the openings 42 and 43 are through holes and are larger than the cross section of the light guide materials 36 and 37.
As described above, the first irradiation mechanism 20 emits the light from the first light source 22 that has passed through the cover 40 to the outside, and the second irradiation mechanism 30 passes through the openings 42 and 43 of the cover. , 33 is emitted to the outside. As a result, light with a relatively wide irradiation range passes through the inner translucent cover and scatters, while light with a relatively narrow irradiation range passes through the opening of the inner translucent cover. Suitable for overall illumination and spot illumination.
In addition, as shown in FIG. 3, protrusions 42a and 43a toward the light guide members 36 and 37 are formed in the openings 42 and 43 of the cover, and the light guide members 36 and 37 are supported by the protrusions. May be. Here, if the tip portions of the protrusions 42a and 43a are rounded, the light guide material can be reliably held without being damaged. In this case, the light guide members 36 and 37 are reliably supported by the through holes 14a and 14b and the protrusions 42a and 43a of the housing. Of course, when the light guide material can be supported by the through holes 14a and 14b of the housing, there is no protrusion and a gap may be formed between the light guide material and the opening of the cover.

The outer translucent cover (second translucent member) 50 is provided in the irradiation opening 12 of the housing. As shown in FIGS. 3 and 8, claw portions 56 for attaching the cover 50 to the housing extend to the left and right outer sides at the left and right edge portions 50 c and 50 d of the cover 50. On the other hand, the elastic members 17a and 17b are mounted on the left and right side surfaces 16a and 16b of the housing, for example. In this case, the cover 50 is attached and fixed to the housing by inserting the left claw portion 56 into the groove 17a2 of the elastic member and inserting the right claw portion 56 into the groove 17b2 of the elastic member.
Of course, there is no particular limitation on the method of fixing the outer light-transmitting cover inside the housing, but a method of fixing with a structure that does not easily come off due to vibration or light impact during operation is suitable.
Transparent polycarbonate is preferably used for the cover 50 from the viewpoints of heat resistance and strength, but a transparent molded product obtained by molding a resin molding material such as other thermoplastic resin by injection molding, press molding, or the like is also used. You can also. The cover 50 has a thickness of about 2 to 4 mm, for example. Moreover, the space | interval of the inner side translucent cover 40 and the outer side translucent cover 50 shall be about 2-4 mm, for example.

As shown in FIGS. 3 and 8, the back surface (surface on the bottom 14 side) 50b of the cover 50 is subjected to weak matting. This matting process can also be performed by sandblasting a predetermined position on a transparent plate having gloss on the front and back surfaces. Note that the gloss is left as it is on the surface 50a. The matte processing of the outer translucent cover may be performed on the surface 50a side, or may be performed on both the front and back surfaces 50a and 50b.
The outer light-transmitting cover 50 transmits at least part of the light from the first light source 22 that has passed through the inner light-transmitting cover 40 in the space SP2 inside the housing while projecting it. Further, the outer translucent cover 50 transmits at least part of the light from the second light sources 32 and 33 that has passed through the openings 42 and 43 of the inner translucent cover.
As described above, the effect of hiding the first and second light sources from the occupant can be obtained, and a depth feeling and a three-dimensional feeling can be expressed in the overall illumination, and an effect can be obtained in which a sense of quality is imparted to the illumination.

As shown in FIGS. 3 and 6, the light guide members 36 and 37 penetrate the openings 42 and 43 of the inner translucent cover and allow the light from the second light sources 32 and 33 to enter the openings 42 and 43. It is a member to be passed. Each of the light guide members 36 and 37 has side surfaces 36c, 36d, 37c, and 37d formed in a trapezoidal substantially trapezoidal plate shape, and the surface on the bottom portion 14 side is incident portions 36a and 37a that allow light from the light sources 32 and 33 to enter. The surfaces on the irradiation opening 12 side are exit portions 36b and 37b that radiate incident light from the incident portion. As shown in FIG. 10, the light guide members 36 and 37 are fitted with seal members 15a and 15b on the incident portions 36a and 37a, respectively, and are separated from the light sources on the front side of the second light sources 32 and 33, respectively. Are attached to the through holes 14a and 14b at the bottom of each. When the light from the second light sources 32 and 33 is incident on the incident portions 36a and 37a, the light is reflected from the side surfaces 36c, 36d, 37c, and 37d in the light guides 36 and 37 as appropriate from the outlet portions 36b and 37b. Radiated.
Further, as shown in FIG. 11, the light guide members 36 and 37 are members that transmit light from the first light source 22 in a direction different from directions D1 and D2 that guide light from the second light sources 32 and 33. It is said that.

  A transparent acrylic resin is preferably used for the light guide members 36 and 37 from the viewpoint of translucency, heat resistance, and strength. However, resin molding materials such as other thermoplastic resins such as polycarbonate are formed by injection molding or press molding. It is also possible to use a transparent molded product formed by the above method. The light guide member is sized to fit within the housing, and has a thickness of about 5 to 10 mm, for example, and a distance from the incident portion to the exit portion of about 5 to 50 mm.

With the above configuration, the overall illumination 20 that is the first irradiation mechanism transmits the light guide members 36 and 37 from the side surfaces 36c and 37c to the side surfaces 36d and 37d and from the first light source 22 that has transmitted the covers 40 and 50. The light and the light from the first light source 22 that has passed through the covers 40 and 50 without passing through the light guide members 36 and 37 are emitted to the external OP1. As a result, light having a relatively wide irradiation range passes through the light guide material and is emitted to the outside from the light-transmitting cover, so that a configuration suitable for overall illumination of the present illumination device having a spot illumination function is provided. be able to.
In addition, since the second light sources 32 and 33 are arranged so that the light guided in the space SP1 inside the housing approaches each other, the spot illumination 30 that is the second irradiation mechanism substantially omits the first light source 22. Light from each of the second light sources 32 and 33 in the sandwiched position is emitted to different ranges CO2 and CO3 so as to cross at the external OP1.

  Note that a substrate incorporating an electric circuit for the switch circuit 60 shown in FIG. 9 is provided inside the housing. The switch circuit 60 accepts an operation for switching whether or not to supply power to the light sources 22, 32, and 33 at each of the operation switches 62, 63, and 64, and supplies power to the light sources 22, 32, and 33 according to the accepted operation. Switching between supplying and shutting off the supply of power. Although the operation switches 62 to 64 are provided in the housing 10, they may be provided other than the housing such as an upper part of the dashboard. The first light sources 22a to 22c are connected in parallel, and a switch 62 is inserted in a wiring for supplying power to the parallel circuit of the light sources 22a to 22c. In addition, switches 63 and 64 are inserted in wirings for supplying power to the light sources 32 and 33, respectively. The voltage V supplied to these wirings is about 3 to 6 V, for example.

The operation switches 62 to 64 include a relay switch and a keyboard switch that are turned on and off each time a pressing operation is performed, a slide switch that is turned on and off according to the slide position of the operation knob, and a tilt of the operation knob. For example, a toggle switch that switches between on and off, a lever switch, a rocker switch, and a rotary switch that switches between on and off according to the rotation position of the operation knob can be used. There is no restriction | limiting in particular in the shape and structure of an operation switch. Also, instead of the switches 62 to 64, a single operation switch such as a slide switch is used, the setting for lighting only the entire illumination, the setting for lighting only the spot, the setting for simultaneously lighting the entire illumination and the spot illumination, The setting for turning off the spot illumination at the same time may be switched with the same operation switch. Of course, if each spot lighting can be switched on and off separately on only one side, it will be possible to irradiate only the necessary part with spot lighting, and it will be possible to meet the more detailed environment and demands of the passengers .
The installation position of the operation switch is preferably a position where the hand of an occupant sitting on the seat can reach.
If the lighting device 100 is provided with the operation switch, the lighting device itself can be switched between lighting and extinguishing. Therefore, it is not necessary to provide a separate operation switch in the vehicle interior, and the convenience of the lighting device is improved. To do.

In order to manufacture the lighting device 100, for example, the following may be performed.
The housing 10, the light guide members 36 and 37, and the covers 40 and 50 can be formed using various known techniques. For example, a granular raw material of a thermoplastic resin molding material is supplied to an injection molding machine with a heater, and the raw material is heated and melted by a heater to form a housing, a light guide material, and a translucent cover. A housing, a light guide material, and a translucent cover can be formed by injecting and molding a molten resin molding material into a predetermined mold and cooling the mold to solidify the resin.

When the housing 10 is formed, the first light source 22 is attached to the through hole 14c, the second light sources 32 and 33 are attached to the through holes 14a and 14b, and the elastic members 17a and 17b are appropriately attached to the side surfaces 16a and 16b. Installing. Further, the light source wires 24, 34, and 35 are connected to the switch circuit 60.
As shown in FIG. 10, seal members 15 a and 15 b are appropriately fitted on the incident portions 36 a and 37 a side of the light guide materials 36 and 37. Next, the exit portions 36b and 37b side of the light guide materials 36 and 37 are passed through the openings 42 and 43 of the inner translucent cover, and the incident portion side of the light guide materials 36 and 37 is attached to the through holes 14a and 14b of the housing. The claw portion 46 of the inner translucent cover is inserted into the grooves 17a1 and 17b1 of the elastic member, and the inner translucent cover 40 is attached and fixed inside the housing. And if the nail | claw part 56 of an outer side translucent cover is inserted in the groove | channels 17a2 and 17b2 of an elastic member, and the outer translucent cover 50 is attached and fixed to the opening part for irradiation of a housing, the illuminating device 100 will be formed.

  In addition to being provided at the front edge of the ceiling in the vehicle interior, the present lighting device may be provided at the center or rear edge of the ceiling in the vehicle interior, or outside the vehicle such as a side mirror or the rear of the vehicle. May be provided. When this lighting device is attached to the outside of the vehicle, it is possible to illuminate the traveling direction of the vehicle with stronger light with the spot lighting of the lighting device while illuminating the outside of the vehicle with the overall lighting of the lighting device. can get.

(2) Functions and effects of the automotive lighting device:
Hereinafter, the operation and effects of the automotive lighting device 100 will be described.
As shown in FIG. 11, the light emitted from the first light source 22 travels through the space SP2 inside the housing. Here, the light traveling in the direction of the light guide members 36 and 37 passes through the light guide material from the side surfaces 36c and 37c to the side surfaces 36d and 37d, and then passes through the inner light-transmitting cover 40 and the outer light-transmitting cover 50. Thus, the light is emitted from the irradiation opening 12 to the external OP1. The light traveling between the light guide members 36 and 37 does not pass through the light guide member, passes through the covers 40 and 50, and is emitted to the external OP1. The irradiation range CO1 of light emitted from the overall illumination 20 is mainly determined by the positional relationship between the side surfaces 16a to 16d of the housing and the light source 22, and is a wide radial range centering on the center position CE1 determined by the positional relationship. It becomes. The center position CE1 is the position of the first light source if there is only one first light source, and the position near the plurality of first light sources if there are a plurality of first light sources.

On the other hand, the light emitted from the second light sources 32 and 33 is transmitted through the light guide members 36 and 37 in the directions D1 and D2 from the incident portions 36a and 37a toward the outlet portions 36b and 37b. Thereby, the light from the light sources 32 and 33 passes through the openings 42 and 43 of the inner light-transmitting cover, passes through only the outer light-transmitting cover 50 out of both covers 40 and 50, and passes through the irradiation opening 12 to the outside. Released to OP1. That is, the light from the light sources 32 and 33 passes through the space SP2 through which the light from the first light source 22 passes inside the housing, and the range CO2, which is narrower than the irradiation range CO1 of the light emitted from the overall illumination 20. Released to CO3. The irradiation ranges CO2 and CO3 of the light emitted from the spot illumination 30 are mainly determined by the positional relationship between the light guide members 36 and 37 and the light sources 32 and 33, and are narrow radial shapes centering on the central position determined by the positional relationship. It becomes the range.
Note that the widths of the irradiation ranges CO1 to CO3 can be compared by the area of light irradiated to the spherical surface PL1 that is equidistant r around the center position CE1. Here, assuming that the areas irradiated with light from the light sources 22, 32, and 33 on the spherical surface PL1 are S1, S2, and S3 (both are positive numbers), the irradiation ranges CO2 and CO3 are narrower than the irradiation range CO1. Means S2 <S1, S3 <S1.

  As described above, the light in the relatively wide irradiation range CO1 and the light in the relatively narrow irradiation ranges CO2 and CO3 are emitted to the external OP1 from the same space SP2 inside the housing, so that the wide range and the narrow range are the same. It can be illuminated with the lighting device 100. Further, since the light having a relatively wide irradiation range and the light having a relatively narrow irradiation range pass through the same space SP2 inside the housing and then are emitted to the external OP1, the space inside the housing can be reduced. it can. Therefore, it is possible to improve the convenience of the automotive lighting device and to reduce the size of the automotive lighting device.

  In addition, since the directions D1 and D2 in which light from the second light sources 32 and 33 are guided in the space SP2 inside the housing are directions close to each other, the light from the light sources 32 and 33 has different ranges so as to cross at the external OP1. Released to CO2 and CO3. As a result, the space SP2 inside the housing is efficiently used, the illuminating device is given unexpectedness and fun, and the illuminating device is made smaller than when the light is not crossed.

  Further, since the matte portions 44 and 45 are provided on the front and back surfaces 40a and 40b of the inner translucent cover, as shown in FIG. 12, the first translucent cover 40 is transmitted through the inner translucent cover 40 in the space SP2 inside the housing. At least a part of the light from the light source 22 is projected onto the outer translucent cover 50, and a vertical stripe pattern PA <b> 1 appears on the outer translucent cover 50. Therefore, a sense of depth or a three-dimensional feeling is expressed in the overall illumination, and it is possible to give a luxury feeling to the illumination.

(3) Modification:
Various modifications can be considered for the present invention.
The spot illumination may be an irradiation mechanism that emits light from each second light source to a different range by crossing each other in the space SP2 inside the housing.
The second light source may be only one of the second light sources 32 and 33 described above. Even in this case, since the spot illumination transmits the light from the second light source into the space that allows the light from the first light source to pass inside the housing, the convenience of the lighting device is improved and the illumination is improved. The effect of downsizing the device can be obtained.
The basic operation and effect of the present invention can be obtained by an illumination device including the housing 10, the overall illumination 20, and the spot illumination 30. Therefore, even in a lighting device in which some or all of the inner light-transmitting cover 40, the outer light-transmitting cover 50, the switch circuit 60, and the light guide materials 36 and 37 are not provided, the convenience of the lighting device is improved. An effect of downsizing the lighting device can be obtained.

As in the illumination device shown in FIG. 13, lenses 152 and 153 that transmit at least part of light from the second light sources 32 and 33 while being refracted may be formed on the outer translucent cover 150. The lenses 152 and 153 are provided in the vicinity of the light guide outlets 36 b and 37 b in the cover 150. When the lens is a convex lens, the irradiation range of light from the second light sources 32 and 33 can be narrowed.
With the above configuration, the second irradiation mechanism 30 transmits the light from the second light sources 32 and 33 through the lenses 152 and 153 and emits the light to the external OP1. As a result, light with a relatively wide irradiation range is transmitted through the inner translucent cover and scattered, while light with a relatively narrow irradiation range is transmitted through the lens of the inner translucent cover. Suitable for overall illumination and spot illumination. For example, it becomes possible to irradiate the spot illumination at a more accurate position by narrowing the irradiation range of the light from the second light source.

  FIG. 14 shows an illumination device provided with mechanisms 171 and 172 that can change the direction in which light from the second light sources 32 and 33 is emitted. The tilt mechanisms 171 and 172 have through holes 14a in which the second light sources 32 and 33 and the light guides 36 and 37 are mounted so as to change the directions D1 and D2 in which light from the second light sources 32 and 33 is guided. , 14b is rotated to change the direction in which the light from the second light source is guided. In this modification, the inner translucent cover is not provided, and the inclinations of the through holes 14a and 14b are changed so as to change the degree of approach of the light guided so as to approach each other in the space SP2. Thereby, it becomes possible to irradiate the part which a passenger | crew wants to illuminate exactly.

FIG. 15 shows an illuminating device in which a light guide material and an inner translucent cover are not provided. In this modification, the irradiation ranges CO4 and CO5 of the light emitted from the spot illumination 30 are mainly determined by the positional relationship between the through holes 14a and 14b and the light sources 32 and 33. Here, since the light sources 32 and 33 are mounted on the back side of the through holes 14a and 14b, the irradiation ranges CO4 and CO5 are narrow radial ranges centering on the center position determined by the positional relationship.
Also in this modification, the convenience of the lighting device is improved, and the effect of reducing the size of the lighting device can be obtained.

  Note that the present invention is not limited to the above-described embodiments and modifications, but the configurations disclosed in the above-described embodiments and modifications are mutually replaced, the combinations are changed, known techniques, and the above-described configurations. Configurations in which the respective configurations disclosed in the embodiments and modifications are mutually replaced or combinations thereof are also included.

The principal part perspective view which shows an example of the interior of the motor vehicle which employ | adopted the illuminating device. The front view which shows an example of an illuminating device seeing from the opening part side for irradiation. The vertical sectional view which shows the illuminating device shown in FIG. 2 by sectional view in the position of A1-A1 of the figure. The front view which shows an example of the housing of the state which attached the 2nd light source and the operation switch. The principal part perspective view which shows the principal part of the housing shown in FIG. The figure which shows an example of a light guide material. The figure which shows an example of an inner side translucent cover. The figure which shows an example of an outer side translucent cover. The circuit diagram which shows the electric circuit of an illuminating device. The exploded view which decomposes | disassembles and shows a mode that the irradiation apparatus shown in FIG. 3 is assembled. The figure for demonstrating typically the irradiation range of each irradiation mechanism. The front view which shows the pattern projected on an outer side translucent cover. The vertical sectional view which shows the illuminating device of a modification in a cross-sectional view at a position corresponding to A1-A1 in FIG. The vertical sectional view which shows the illuminating device of a modification in a cross-sectional view at a position corresponding to A1-A1 in FIG. The vertical sectional view which shows the illuminating device of a modification in a cross-sectional view at a position corresponding to A1-A1 in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Housing, 12 ... Irradiation opening part, 14 ... Bottom part (opposite part of irradiation opening part),
14a-14c ... through hole, 15a, 15b ... sealing member,
16a to 16d ... side portions, 17a, 17b ... elastic members,
20 ... Overall illumination (first irradiation mechanism), 22 ... First light source, 24 ... Wiring,
30 ... spot illumination (second irradiation mechanism), 32, 33 ... second light source, 34, 35 ... wiring,
36, 37 ... light guide material, 36a, 37a ... incident part, 36b, 37b ... exit part,
36c, 36d, 37c, 37d ... side surfaces,
40 ... Inner translucent cover (first translucent member),
42, 43 ... opening, 42a, 43a ... ridge part, 44, 45 ... matte part,
46 ... nail,
50, 150 ... outer translucent cover (second translucent member), 56 ... claw portion,
60: switch circuit, 62, 63, 64 ... operation switches,
100 ... Lighting device for automobile,
152, 153 ... lenses,
171, 172 ... tilting mechanism,
CO1, CO2, CO3, CO4, CO5 ... irradiation range,
D1, D2 ... Direction of guiding light,
OP1 ... outside,
PA1 ... pattern, PL1 ... virtual projection plane,
SP1: Car compartment, SP2: Space,

Claims (9)

A housing in which a space through which light to be radiated to the outside passes is formed;
A first irradiation mechanism provided inside the housing and emitting light from the first light source to the outside from the space inside the housing;
Irradiation of light emitted from the first irradiation mechanism by passing light from the second light source through a space provided in the housing and allowing light from the first light source to pass through the housing. And a second irradiation mechanism for emitting light from the second light source to a range narrower than the range. A transparent light source provided in the housing and formed with an opening through which light from the first light source is transmitted while being scattered while passing through the space inside the housing. Further comprising an optical member,
The first irradiation mechanism emits light from the first light source that has passed through the translucent member to the outside, and the second irradiation mechanism from the second light source that has passed through the opening of the translucent member. The automobile lighting device according to claim 1, wherein the light is emitted to the outside.   The second irradiation mechanism includes a light guide material that passes through the opening of the light transmitting member and allows light from the second light source to enter and pass through the opening of the light transmitting member. Item 3. An automotive lighting device according to Item 2. The second irradiation mechanism causes light from the second light source to enter and guide the light in a predetermined direction and light from the first light source in a direction different from the direction in which the light from the second light source is guided. Having a light guide material that transmits
4. The automotive lighting device according to claim 1, wherein the first irradiation mechanism emits light from the first light source that has passed through the light guide material to the outside. 5. A first translucent member that is provided inside the housing and transmits at least part of light from the first light source while being scattered in a space inside the housing;
A second translucent member that is provided in the housing and transmits at least part of the light from the first light source that has passed through the first translucent member in a space inside the housing while projecting. The automobile lighting device according to claim 1.   A lens provided in the housing and transmitting at least part of the light from the first light source while scattering and transmitting at least part of the light from the second light source in a space inside the housing. The automobile lighting device according to claim 1, further comprising a translucent member formed with the light transmitting member. A plurality of the second light sources are provided inside the housing and arranged so that light guided in the space approaches each other.
The said 2nd irradiation mechanism discharge | releases the light from each said 2nd light source to a different range so that it may mutually cross | intersect, The object for motor vehicles as described in any one of Claims 1-6 characterized by the above-mentioned. Lighting device. A housing in which a space through which light to be radiated to the outside passes is formed, and an irradiation opening for emitting the light that has passed through the space to the outside;
A first light source provided in a portion of the housing facing the irradiation opening across the space, and the light from the first light source is transmitted from the irradiation opening of the housing to the outside; A first irradiation mechanism to be released;
A plurality of second light sources provided in a portion of the housing facing the irradiation opening across the space and arranged so that light guided in the space approaches each other; The light from each of the second light sources is passed through a space through which the light from the first light source passes, and each of the light sources is narrower than the irradiation range of the light emitted from the first irradiation mechanism. A second irradiation mechanism for emitting light from a second light source from the irradiation opening;
Provided between the irradiation opening and the first and second light sources inside the housing, and transmits at least part of the light from the first light source while being scattered in the space inside the housing. And an inner translucent cover in which an opening through which light from the second light source passes is formed,
At least a part of the light from the first light source, which is provided in the opening for irradiation of the housing and is transmitted through the inner translucent cover in a space inside the housing, is transmitted while being projected, and the inner translucent cover An outer light-transmitting cover that transmits at least part of the light from the second light source that has passed through the opening;
The second irradiation mechanism passes through the opening of the inner light-transmitting cover and allows light from the second light source to enter and pass through the opening of the inner light-transmitting cover, and light from the second light source. A light guide material that transmits light from the first light source in a direction different from the direction in which the light is guided, and emits light from each of the second light sources to different ranges so as to cross outside the housing Is a mechanism to
The first irradiation mechanism transmits light from the first light source that has passed through the light guide material and passed through the inner light-transmitting cover and the outer light-transmitting cover, and the light guide material without passing through the light guide material. An automotive lighting device, characterized in that a mechanism for emitting light from the first light source that has passed through an inner light-transmitting cover and the outer light-transmitting cover to the outside.   An operation for switching whether to supply power to the first and second light sources is received, and whether to supply power to the first and second light sources or to cut off the supply of power according to the received operation The vehicle lighting device according to claim 1, further comprising a switch circuit that switches between the two.

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