CN104235722A - Lamp unit and vehicle lamp - Google Patents
Lamp unit and vehicle lamp Download PDFInfo
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- CN104235722A CN104235722A CN201410272961.8A CN201410272961A CN104235722A CN 104235722 A CN104235722 A CN 104235722A CN 201410272961 A CN201410272961 A CN 201410272961A CN 104235722 A CN104235722 A CN 104235722A
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- light
- blade
- light source
- lamp unit
- rotoflector
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
- F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
- F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
- F21S41/13—Ultraviolet light; Infrared light
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/16—Laser light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/176—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
- F21S41/255—Lenses with a front view of circular or truncated circular outline
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
- F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
A lamp unit 120 includes a first light source 130 and a rotating reflector 126, which rotates about an axis of rotation. The twist reflector 126 includes a plurality of blades 126a, which are provided in the circumferential direction about the rotational axis. Each of the sheets 126a has a reflection surface that reflects the light emitted from the light source 130 light during the rotation of the reflector 126 by a predetermined angle, so that a desired light distribution pattern is formed. Each of the sheets 126a has a twisted shape so that an angle between an optical axis and the reflecting surface changes as it runs along a circumferential direction about the rotational axis of the reflector 126 . The rotary reflector 126 is formed with a notched portion 126c which is obtained by removing a part is notched on at least one of the adjacent 126a sheets, so that when the light is incident from the light source 130 on the reflection surface of one of the adjacent blades 126a, is prevented that the light incident from the light source 130 to the reflective surface of the other of the adjacent blades 126a.
Description
Technical field
The present invention relates to lamp unit, particularly relate to the lamp unit used at lamps apparatus for vehicle.
Background technology
It is well known that, there is the optical unit (with reference to the patent document 1) light penetrated from light source being reflected the rotoflector rotated to a direction centered by rotating shaft.Rotoflector is provided with multiple blade in the circumference of rotating shaft, and this blade is provided with and the light of reflection is formed the reflecting surface of wishing light distribution pattern.This optical unit due to the light distribution pattern of hope can be formed by making rotoflector rotate to a direction, so there is the rotary driving part of reflector to bear few advantage.
Patent document 1:(Japan) JP 2012-227102 publication
Above-mentioned optical unit when adjacent blade both sides have light to inject simultaneously, owing to there being two illumination beams to occur in different directions simultaneously, so the both ends of light distribution pattern become simultaneously luminous.Have in this case and be difficult to the independent problem controlling light distribution pattern both ends irradiating state.
Summary of the invention
The present invention develops in view of this situation, its object is to provide a kind of technology, suppresses or prevent having light to inject adjacent blade both sides simultaneously in the lamp unit possessing rotoflector.
The lamp unit of the present invention's form has: light source, the rotoflector rotated centered by rotating shaft.Rotoflector has multiple blade in the circumference of rotating shaft, and this blade has and during rotating with predetermined angular the light penetrated from light source to be reflected and to form the reflecting surface of wishing light distribution pattern.Blade has such twisted shapes: along with the inner side from blade toward the outer side and the angle of optical axis and reflecting surface does not change, but along with towards the circumference centered by rotating shaft, the angle of optical axis and reflecting surface changes, but also at least excise a part for any one blade, when being injected into the reflecting surface of adjacent side blade to make the light from described light source, the light from this light source is made not to be injected into the reflecting surface of adjacent opposite side blade.
According to this form, the reflecting surface adjoining opposite side blade when the reflecting surface due to adjacent side blade has the light from light source to inject not light is injected, so the phenomenon that can suppress or prevent the both ends of light distribution pattern simultaneously luminous.
The circumferential lengths of blade notch part also can diminish along with the inner side from blade toward the outer side.
Also secondary light source can be set at the rear of blade notch part.Thus, use secondary light source and the function different from the first light source can be played.
Secondary light source also can rotate and the gap portions of blade bright light during front in rotoflector.Thus, because the light that penetrates from secondary light source is projected, so can send not by the light of blade reflective surface by notch part.
Also can also have the second reflector, this second reflector has the reflecting surface that the light from secondary light source is reflected to blade notch part.Thereby, it is possible to improve the utilization ratio from the light of secondary light source.
Secondary light source also can be infrared light sources.Thereby, it is possible to the region of turning off the light with infrared radiation first light source use camera shooting.
Secondary light source can be also semiconductor laser light source, or utilizes the light source of semiconductor laser excited fluophor luminescence.
Other forms of the present invention are the lamps apparatus for vehicle using above-mentioned lamp unit.
The effect of invention
According to the present invention, in the lamp unit possessing rotoflector, can suppress or prevent have light to inject adjacent blade both sides simultaneously.
Accompanying drawing explanation
Fig. 1 is the horizontal cross of the first embodiment headlight for automobile;
Fig. 2 is the top view that pattern represents the lamp cellular construction comprising the first embodiment optical unit;
Side view when Fig. 3 is lamp unit viewed from the direction of A shown in Fig. 1;
Fig. 4 (a) ~ Fig. 4 (e) is the stereogram of the blade situation that expression is corresponding to the anglec of rotation of rotoflector in the lamp unit of the first embodiment;
Fig. 5 (a) ~ Fig. 5 (e) is the figure representing the projected image being in scanning position corresponding to Fig. 4 (f) ~ Fig. 4 (j) state with rotoflector;
Fig. 6 (a) is the headlight for automobile representing use first embodiment, relative optical axis and the figure of light distribution pattern when scanning left and right ± 5 degree of scopes, Fig. 6 (b) is the figure of the luminous intensity distribution representing light distribution pattern shown in Fig. 6 (a), Fig. 6 (c) is the headlight for automobile representing use first embodiment, the figure of the position shading status of in light distribution pattern, Fig. 6 (d) is the figure of the luminous intensity distribution representing light distribution pattern shown in Fig. 6 (c), Fig. 6 (e) is the headlight for automobile representing use first embodiment, the figure of the multiple positions shading status in light distribution pattern, Fig. 6 (f) is the figure of the luminous intensity distribution representing light distribution pattern shown in Fig. 6 (e).
Fig. 7 is the stereogram of the second embodiment rotoflector;
Fig. 8 is that pattern represents the top view comprising the second embodiment lamp cellular construction;
Fig. 9 is the stereogram of the 3rd embodiment rotoflector.
Detailed description of the invention
Below, based on embodiment with reference to accompanying drawing while the present invention is described.Then pay identical symbol for each same or equal structural element shown in the drawings, parts and process, suitably the repetitive description thereof will be omitted.Embodiment is not limit invention but illustrate, and it is the essence of inventing that all features that embodiment describes and combination thereof might not limit.
Lamp unit of the present invention can be used in various lamps apparatus for vehicle.Situation lamp unit application of the present invention headlight for automobile in lamps apparatus for vehicle is below described.
(the first embodiment)
Fig. 1 is the horizontal cross of the first embodiment headlight for automobile.Headlight for automobile 10 is mounted in the right side headlamp on the right side of motor vehicle leading section, is identical structure except symmetrical with the headlamp being arranged on left side.Therefore, the headlight for automobile 10 on right side is below described in detail in detail, omits the explanation for left side vehicle headlamp.
As shown in Figure 1, headlight for automobile 10 has lamp main body 12, and it has the recess of forwards opening.Its front openings of lamp main body 12 is covered by transparent front shroud 14 and is formed with lamp house 16.Lamp house 16 has the function as space using the state that two lamp unit 18,20 are configured side by side in vehicle-width direction collecting.
Outside in these lamp unit, that is, the lamp unit 20 being configured in upside shown in Fig. 1 in right side headlight for automobile 10 is the lamp unit possessing lens, is the structure of irradiating variable high beam.On the other hand, the inner side in these lamp unit, that is, the lamp unit 18 being configured in downside shown in Fig. 1 in right side headlight for automobile 10 is the structures of irradiating low beam.
Low beam lamp unit 18 has: reflector 22, the light source bulb (incandescent lamp bulb) 24 supported by reflector 22 and not shown lampshade, reflector 22 utilizes not shown known mechanisms, and such as Use Adjustment screw rod and nut body carry out the supporting of relative lamp main body 12 free inclination ground.
As shown in Figure 1, lamp unit 20 has: rotoflector 26, LED28, be configured in the convex lens 30 as projecting lens in rotoflector 26 front.Also can replace LED28 and the semiconductor light-emitting elements such as EL element and LD element are used as light source.Also can replace LED28 and utilize semiconductor laser and the light source utilizing the luminescence of semiconductor laser excited fluophor, also they and LED combination can be used as light source.Special in the aftermentioned control for a part for light distribution pattern being carried out shading, preferably make bright light turn off the light light source that time short and high accuracy carries out controlling.As long as the shape of convex lens 30 according to the light distribution characteristics such as required light distribution pattern and Illumination Distribution suitably select just can, non-spherical lens and free-form surface lens are used.The convex lens 30 of the present embodiment use non-spherical lens.
Rotoflector 26 utilizes the drive sources such as not shown motor and rotates to a direction centered by rotating shaft R.In addition, rotoflector 26 has such reflecting surface: rotate the light the light distribution pattern of formation hope that reflect from LED28 injection.The rotoflector 26 of embodiment forms optical unit.
Fig. 2 is the top view that pattern represents lamp unit 20 structure comprising the present embodiment optical unit.Side view when Fig. 3 is lamp unit 20 viewed from the direction of A shown in Fig. 1.
Rotoflector 26 is having reflecting surface function and the identical three blade 26a of shape are arranged on around tubular rotating part 26b.The relative optical axis Ax of rotating shaft R of rotoflector 26 tilts, be arranged on comprise optical axis Ax and LED28 plane in.In other words, rotating shaft R is configured to the plane of scanning motion by rotating the LED28 light (illumination beam) scanned in the lateral direction almost parallel.Thereby, it is possible to seek the slimming of optical unit.At this, the said plane of scanning motion such as can be got into and the track of scan light and LED28 light is connected formed fan-shaped plan continuously.In the lamp unit 20 of the present embodiment, the LED28 possessed is smaller, the position that is configured with LED28 is also departed from from optical axis Ax between rotoflector 26 and convex lens 30, therefore, as the lamp unit of existing spotlight mode, become the situation of row to compare the assortment on optical axis of light source, reflector and lens, the depth direction (fore-and-aft direction of vehicle) of headlight for automobile 10 can be shortened.
The blade 26a shape of rotoflector 26 is the near focal point making to be formed on by 2 secondary light sources of the formed LED28 of reflection convex lens 30.And blade 26a has the twisted shapes along with angle changes formed by optical axis Ax and reflecting surface towards the circumference centered by rotating shaft.Thus, as shown in Figure 2, the light of LED28 can be used to scan.Also to describe in detail about this point.
Fig. 4 (a) ~ Fig. 4 (e) is the stereogram of the blade situation that expression is corresponding to the anglec of rotation of rotoflector 26 in the lamp unit of the present embodiment.Fig. 4 (f) ~ Fig. 4 (j) is corresponding with the state of Fig. 4 (a) ~ Fig. 4 (e) and for illustration of the figure reflecting the point changed from the direction of the light of light source.
Fig. 4 (a) represents state LED28 being configured to irradiation two blade 26a1,26a2 borderline regions.This state is as shown in Fig. 4 (f), and the light of LED28 is reflected by oblique direction optical axis Ax in the reflecting surface S-phase of blade 26a1.Consequently in the region of vehicle front being formed with light distribution pattern, an end regions at both ends, left and right is illuminated.Then, rotoflector 26 carries out rotating and becoming the state shown in Fig. 4 (b), because blade 26a1 reverses, so reflecting surface S (angle of reflection) change of the blade 26a1 of reflection LED28 light.Consequently as shown in Fig. 4 (g), the light of LED28 is reflected as, than the direction of the reflection direction shown in Fig. 4 (f) closer to optical axis Ax.
Then, rotoflector 26 rotates as shown in Fig. 4 (c), Fig. 4 (d), Fig. 4 (e), the reflection direction of LED28 light is in the region of vehicle front being formed with light distribution pattern, and another end at both ends changes to the left and right.The rotoflector 26 of the present embodiment, by rotation 120 degree, can utilize the light of LED28 front to direction (horizontal direction) run-down.In other words, become and make a slice blade 26a by before LED28, the desired area of vehicle front just by the optical scanning of LED28 once.And as shown in Fig. 4 (f) ~ Fig. 4 (j), 2 secondary light sources (the light source virtual image) 31 move left and right near the focus of convex lens 30.The rotary speed of the quantity of blade 26a and shape and rotoflector 26, consider required light distribution pattern characteristic and institute scan picture flicker and foundation test and analog result suitably set.In addition, as the drive division then preferred motor changing rotary speed according to various distribution controls.Thereby, it is possible to change sweep time easily.Then preferably rotational time information can be obtained from motor self as this motor.DC brushless motor can be enumerated particularly.When using DC brushless motor, due to rotational time information can be obtained from motor self, so can the machines such as encoder be omitted.
The rotoflector 26 of the present embodiment, by trying every possible means in the shape and rotary speed of blade 26a, can use the light of LED28 that vehicle front is scanned at left and right directions.Fig. 5 (a) ~ Fig. 5 (e) is the figure representing the projected image being in scanning position corresponding to Fig. 4 (f) ~ Fig. 4 (j) state with rotoflector.The longitudinal axis of figure and unit degree of being (°) of transverse axis, represent range of exposures and irradiation position.As shown in Fig. 5 (a) ~ Fig. 5 (e), due to the rotation of rotoflector 26, projected image moves in the horizontal direction.
Fig. 6 (a) represents the headlight for automobile using the present embodiment, relative optical axis and the figure of light distribution pattern when scanning left and right ± 5 degree of scopes, Fig. 6 (b) is the figure of the luminous intensity distribution representing light distribution pattern shown in Fig. 6 (a), Fig. 6 (c) represents the headlight for automobile using the present embodiment, the figure of the position shading status of in light distribution pattern, Fig. 6 (d) is the figure of the luminous intensity distribution representing light distribution pattern shown in Fig. 6 (c), Fig. 6 (e) represents the headlight for automobile using the present embodiment, the figure of the multiple positions shading status in light distribution pattern, Fig. 6 (f) is the figure of the luminous intensity distribution representing light distribution pattern shown in Fig. 6 (e).
As shown in Fig. 6 (a), the headlight for automobile 10 of the present embodiment makes the light of LED28 be reflected by rotoflector 26, substantially can be formed the high beam light distribution pattern of rectangle by the optical scanning front reflected.Owing to just can be formed the light distribution pattern of hope to the rotation in a direction by rotoflector 26, so do not need tuned reflection mirror mechanism special like that to drive, and rare as tuned reflection mirror for the restriction of reflecting surface size.Therefore, by selecting the rotoflector 26 with larger reflecting surface, just the light penetrated from light source can be utilized expeditiously in illumination.Namely the maximum emission intensity of light distribution pattern can be improved.Rotoflector 26 and the diameter of convex lens 30 of the present embodiment are roughly the same diameters, and the area of blade 26a also can increase correspondingly.
Possesses the headlight for automobile 10 of the present embodiment optical unit, make the turn off the light change of time and luminous intensity of the bright light of LED28 synchronous with the rotation of rotoflector 26, then can be formed as Suo Shi Fig. 6 (c), Fig. 6 (e) the high beam light distribution pattern of arbitrary region shading.When synchronous with the rotation of rotoflector 26 and when making the luminous intensity variations of LED28 (bright light is turned off the light) and form high beam light distribution pattern, by the phase shifting of luminous intensity variations, can also be controlled to and light distribution pattern self is rotated.
As mentioned above, the headlight for automobile of the present embodiment forms light distribution pattern by the light scanning LED, and can form light shielding part arbitrarily in a part for light distribution pattern by the change controlling luminous intensity.Therefore, compare with the situation forming light shielding part that a part of multiple LED is turned off the light, can with the few LED of quantity the shading accurately of the region of hope.Because headlight for automobile 10 can form multiple light shielding part, so there is multiple vehicle to deposit in case in front, also can the region shading corresponding with each vehicle.
And basic light distribution pattern can be made not carry out shading control with moving, so the sticky feeling giving driver can be reduced when shading controls due to headlight for automobile 10.And due to lamp unit 20 is not moved just light distribution pattern is rotated, so the mechanism of lamp unit 20 can be simplified.Therefore, if headlight for automobile 10 as the drive division for the variable control of luminous intensity distribution have rotoflector 26 is rotated motor just can, the simplification of structure, cost degradation and miniaturization can be sought.
As depicted in figs. 1 and 2, the rotoflector 26 of the present embodiment configures LED28 before it, doubles as the cooling fan to LED28 air-supply.Therefore, do not need to arrange cooling fan and rotoflector respectively, the structure of optical unit can be simplified.And LED28 is carried out air cooling due to the wind utilizing rotoflector 26 to produce, so the radiator for cooling LED 28 can be omitted or miniaturized, the miniaturization of optical unit, cost degradation and lightweight can be sought.
This cooling fan also not necessarily can have the function directly to light source air-supply, also can produce convection current at radiating parts such as radiators.Such as also can set the configuration of rotoflector 26 and radiator like this: produce convection current near the radiating parts such as the radiator that the wind that rotoflector 26 is produced is arranged in addition at relative LED28, LED28 is cooled.Radiating part also can be not only the parts of other body as radiator, but a part for light source.
(the second embodiment)
The lamp unit of the first embodiment when adjacent blade both sides have light to inject simultaneously, owing to there being two illumination beams to occur in different directions simultaneously, so the both ends becoming light distribution pattern are simultaneously luminous.Be difficult to independent control light distribution pattern both ends irradiating state in this case.So, in the time that adjacent blade both sides have light to inject simultaneously, light source is turned off the light, to irradiate the both ends of light distribution pattern during difference.On the other hand, if light source is turned off the light in the above-mentioned time temporarily, then the brightness at light distribution pattern both ends is had to have the problem reduced to a certain degree.
So the rotoflector of the second embodiment arranges notch part between adjacent blade, thus, makes the blade both sides adjoined have light to inject simultaneously.
Fig. 7 is the stereogram of the second embodiment rotoflector 126.Rotoflector 126 has multiple (being three in Fig. 7) blade 126a in the circumference of tubular rotating part 126b, and this blade 126a has and during rotating with predetermined angular the light penetrated from light source to be reflected and to form the reflecting surface of wishing light distribution pattern.The shape of these blades 126a is identical with the blade 26a of the first embodiment rotoflector 26, is the near focal point making to be formed on by formed 2 secondary light sources of reflection convex lens 156 (with reference to Fig. 8).And blade 126a has the twisted shapes along with angle changes formed by optical axis Ax and reflecting surface towards the circumference centered by rotating shaft.
Different from the first embodiment, two panels blade 126a at adjacent limit place, is provided with notch part 126c in the end of a blade each other.Notch part 126c is configured to such shape: near adjacent two panels blade 126a border, be positioned at period above light source, when light from light source injects the reflecting surface of a blade, light from light source does not inject the reflecting surface of another blade, and is through notch part 126c by rotoflector 126.Thus, light by adjoin a blade reflective surface time, the reflecting surface of another blade is almost or do not produce the reflection of light completely.
So, because the time injected to adjacent blade both sides from the light of light source is roughly zero simultaneously, so do not need correspondingly light source to be turned off the light, or can the time of turning off the light be shortened, minimally can suppress the reduction of illumination efficiency.
Consider the opticpath injected to reflecting surface, the notch part 126c circumferential lengths (L in Fig. 7) of preferred each blade 126a is formed and diminishes along with the Inside To Outside from blade.
Fig. 8 is that pattern represents the top view comprising the second embodiment lamp unit 120 structure.This lamp unit 120 can replace the lamp unit 20 of the first embodiment.
Lamp unit 120 possesses: above-mentioned rotoflector 126 and the semiconductor light-emitting elements 130 such as LED as light source.In lamp unit 120, the optical axis Ax of the relative lamp unit 120 of the rotating shaft R of rotoflector 126 is made to configure rotoflector 126 obliquely.
In blade 126a1,126a2 that Fig. 8 adjoins, the blade 126a2 of side, front is provided with notch part 126c.When being positioned at above light-emitting component 130 near adjacent blade 126a1,126a2 border, carried out the light of self-emission device 130 by the reflective surface of depth lateral lobe sheet 126a1, reverberation is injected (the light A1 in Fig. 8) to convex lens 156.On the other hand, at the blade 126a2 of side, front, owing to carrying out the light of self-emission device 130 by notch part 126c (the light A2 in Fig. 8), so the blade both sides adjoined can be avoided there to be light to inject simultaneously.
Because the length of notch part 126c circumference is larger, the brightness of the light distribution pattern end be projected more reduces, so the degree preferably reduced according to allowed brightness selects the length of notch part 126c circumference.
From the face side of vehicle, being the equal of the notch part 126c position behind of blade 126a, the second light-emitting component 132 of secondary light source function also can be provided as.Second light-emitting component 132 is controlled so as to: bright light during the notch part 126c only at blade 126a in the rotation of rotoflector 126 is positioned at the front of the second light-emitting component 132.Thus, the light penetrated from the second light-emitting component 132, not by the reflective surface of blade 126a, but to be injected (the light B in Fig. 8) directly to convex lens 156 by notch part 126c.
Light from the second light-emitting component 132 can utilize in various uses.Such as when the second light-emitting component 132 is configured in convex lens 156 near focal point, only during the notch part 126c of blade 126a passes through the front of the second light-emitting component 132, although the time is very short, different light distribution pattern can be formed.Also the second light-emitting component 132 can be set to infrared light-emitting component.At this moment, infrared ray can be utilized as night vision.And also can replace the second light-emitting component 132 and using semiconductor laser and utilize the light source of semiconductor laser excited fluophor luminescence to use as secondary light source, also they and LED combination can be used as secondary light source.
Still can be provided with the second reflector (not shown), this second reflector has the reflecting surface that the light from the second light-emitting component 132 is reflected to the notch part 126c of blade 126a.Thereby, it is possible to improve the utilization ratio from the light of the second light-emitting component 132.
Even if from the light of the second light-emitting component 132 by the reflective surface of blade 126a, and the leakage of light etc. are also in unquestioned situation, also can make the second light-emitting component 132 often bright light in the rotation of rotoflector 126.
Fig. 9 is the stereogram of the 3rd embodiment rotoflector 226.This rotoflector 226 in the lamp unit 120 of the second embodiment, can permutation graph 7 illustrate rotoflector 126.
Rotoflector 226 has multiple (being three in Fig. 9) blade 226a in the circumference of tubular rotating part 226b, and this blade 226a has and during rotating with predetermined angular the light penetrated from light source to be reflected and to form the reflecting surface of wishing light distribution pattern.The shape of these blades 226a is identical with the blade 26a of the first embodiment rotoflector 26, is the near focal point making to be formed on by formed 2 secondary light sources of reflection convex lens 156 (with reference to Fig. 8).And blade 226a has the twisted shapes along with angle changes formed by optical axis Ax and reflecting surface towards the circumference centered by rotating shaft.
Different from the first and second embodiments, at adjacent limit place between two panels blade 226a, the end of two blades is formed to equidirectional bending curve-like, is formed with the notch part 226c larger than the notch part 126c of the second embodiment between the end of blade.This notch part 226c is formed such shape in the same manner as the second embodiment: near adjacent two panels blade 226a border, be positioned at period above light source, when light from light source injects the reflecting surface of a blade, light from light source does not inject the reflecting surface of another blade, and is through notch part 226c by rotoflector 226.Thus, light by adjoin a blade reflective surface time, the reflecting surface of another blade is almost or do not produce the reflection of light completely.
So, because the time injected to adjacent blade both sides from the light of light source is almost nil simultaneously, so do not need correspondingly light source to be turned off the light, or can the time of turning off the light be shortened, minimally can suppress the reduction of illumination efficiency.
Consider the opticpath injected to reflecting surface, preferred each notch part 226c circumferential lengths is formed and diminishes along with the Inside To Outside from blade.
Above, describe the present invention with reference to the various embodiments described above, but the present invention not limit by the various embodiments described above, appropriately combined for the structure of each embodiment and displacement are also contained in the present invention.And according to the knowledge of insider, also the order of the combination of each embodiment and process suitably can be changed, the distortion such as various design alterations are applied to each embodiment, is also contained in scope of the present invention by the embodiment being added with this distortion.
The various embodiments described above describe the situation of lamp unit application at lamps apparatus for vehicle, but are also not necessarily applied in this field.Such as also various light distribution pattern can be replaced and be applied in the ligthing paraphernalia carrying out stage and the recreational facilities thrown light on.Existing, the ligthing paraphernalia in this field needs large-scale driving mechanism to change illumination direction, if but the lamp unit of above-described embodiment, then can turn off the light by the bright light of the rotation of rotoflector and light source and form light distribution pattern, therefore, do not need large-scale driving mechanism, can be miniaturized.
Symbol description
10 headlight for automobile 120 lamp unit 126 rotoflector 126a blades
126c notch part 130 semiconductor light-emitting elements 132 second light-emitting component 156 convex lens
Claims (8)
1. a lamp unit, is characterized in that,
Have: light source and the rotoflector rotated centered by rotating shaft,
Described rotoflector has multiple blade in the circumference of rotating shaft, and this blade has and during rotating with predetermined angular the light penetrated from described light source to be reflected and to form the reflecting surface of wishing light distribution pattern,
Described blade has the twisted shapes along with angle changes formed by optical axis and described reflecting surface towards the circumference centered by rotating shaft, but also at least excise a part for any one blade, when being injected into the reflecting surface of adjacent side blade to make the light from described light source, the light from this light source is made not to be injected into the reflecting surface of adjacent opposite side blade.
2. lamp unit as claimed in claim 1, is characterized in that, the circumferential lengths of described blade notch part diminishes toward the outer side along with the inner side from blade.
3. lamp unit as claimed in claim 1 or 2, is characterized in that, arrange secondary light source at the rear of described blade notch part.
4. lamp unit as claimed in claim 3, is characterized in that, described secondary light source rotates and gap portions bright light during front of described blade in described rotoflector.
5. the lamp unit as described in claim 3 or 4, is characterized in that, also has the second reflector, and this second reflector has the reflecting surface that the light from described secondary light source is reflected to described blade notch part.
6. the lamp unit according to any one of claim 3 to 5, is characterized in that, described secondary light source is infrared light sources.
7. the lamp unit according to any one of claim 3 to 5, is characterized in that, described secondary light source is semiconductor laser light source, or utilizes the light source of semiconductor laser excited fluophor luminescence.
8. a lamps apparatus for vehicle, is characterized in that, uses the lamp unit according to any one of claim 1 to 7.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013130420A JP6162497B2 (en) | 2013-06-21 | 2013-06-21 | Lamp unit and vehicle lamp |
| JP2013-130420 | 2013-06-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104235722A true CN104235722A (en) | 2014-12-24 |
| CN104235722B CN104235722B (en) | 2018-10-26 |
Family
ID=52010634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410272961.8A Active CN104235722B (en) | 2013-06-21 | 2014-06-18 | Lamp unit and lamps apparatus for vehicle |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6162497B2 (en) |
| CN (1) | CN104235722B (en) |
| DE (1) | DE102014211678A1 (en) |
| FR (1) | FR3007504B1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468418A (en) * | 2015-08-21 | 2017-03-01 | 丰田自动车株式会社 | Headlight for vehicle device |
| CN108369336A (en) * | 2015-12-21 | 2018-08-03 | Zkw集团有限责任公司 | Headlamp for vehicle |
| CN108375029A (en) * | 2016-10-14 | 2018-08-07 | 株式会社小糸制作所 | Optical unit |
| CN109668116A (en) * | 2017-10-13 | 2019-04-23 | 株式会社小糸制作所 | Lamps apparatus for vehicle |
| CN110869667A (en) * | 2017-07-26 | 2020-03-06 | 株式会社小糸制作所 | Lamp unit and vehicle headlamp |
| CN111094840A (en) * | 2017-08-24 | 2020-05-01 | 株式会社小糸制作所 | Vehicle lamp |
| CN114963113A (en) * | 2022-03-24 | 2022-08-30 | 浙江比肯科技有限公司 | Light changing mechanism of follow-up steering automobile headlamp, headlamp and automobile |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6691036B2 (en) | 2016-12-02 | 2020-04-28 | トヨタ自動車株式会社 | Vehicle lighting system |
| WO2018216456A1 (en) * | 2017-05-26 | 2018-11-29 | 株式会社小糸製作所 | Optical unit |
| WO2021039235A1 (en) * | 2019-08-26 | 2021-03-04 | 株式会社小糸製作所 | Rotating reflector, and method for manufacturing rotating reflector |
| JP7472629B2 (en) * | 2020-04-28 | 2024-04-23 | 船井電機株式会社 | Light projector and mobile light projector |
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| US20090015388A1 (en) * | 2007-07-12 | 2009-01-15 | Koito Manufacturing Co., Ltd. | Vehicle lighting device |
| JP2009224039A (en) * | 2008-03-13 | 2009-10-01 | Koito Mfg Co Ltd | Vehicle headlight device |
| CN102844616A (en) * | 2010-04-13 | 2012-12-26 | 株式会社小糸制作所 | Optical unit, vehicle monitor, and obstruction detector |
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| IT1210733B (en) * | 1987-05-13 | 1989-09-20 | Paolo Soardo | PROGRAMMABLE HEADLIGHT FOR VEHICLES WITH BRIGHT DISTRIBUTION |
| JP4094446B2 (en) * | 2003-02-03 | 2008-06-04 | 株式会社小糸製作所 | Vehicle headlamp and light emitting module |
| DE102005020085A1 (en) * | 2005-04-29 | 2006-11-09 | Osram Opto Semiconductors Gmbh | Motor vehicle headlight |
| JP4617367B2 (en) * | 2008-03-13 | 2011-01-26 | シャープ株式会社 | Headlamp and vehicle infrared night vision apparatus using the same as a light source |
| JP5702216B2 (en) | 2011-04-22 | 2015-04-15 | 株式会社小糸製作所 | Optical unit |
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- 2013-06-21 JP JP2013130420A patent/JP6162497B2/en active Active
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2014
- 2014-06-18 DE DE102014211678.3A patent/DE102014211678A1/en not_active Withdrawn
- 2014-06-18 CN CN201410272961.8A patent/CN104235722B/en active Active
- 2014-06-19 FR FR1455660A patent/FR3007504B1/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090015388A1 (en) * | 2007-07-12 | 2009-01-15 | Koito Manufacturing Co., Ltd. | Vehicle lighting device |
| JP2009224039A (en) * | 2008-03-13 | 2009-10-01 | Koito Mfg Co Ltd | Vehicle headlight device |
| CN102844616A (en) * | 2010-04-13 | 2012-12-26 | 株式会社小糸制作所 | Optical unit, vehicle monitor, and obstruction detector |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468418A (en) * | 2015-08-21 | 2017-03-01 | 丰田自动车株式会社 | Headlight for vehicle device |
| CN106468418B (en) * | 2015-08-21 | 2019-11-08 | 丰田自动车株式会社 | Headlight for vehicle device |
| CN108369336A (en) * | 2015-12-21 | 2018-08-03 | Zkw集团有限责任公司 | Headlamp for vehicle |
| CN108369336B (en) * | 2015-12-21 | 2020-11-10 | Zkw集团有限责任公司 | Head lamp for vehicle |
| CN108375029A (en) * | 2016-10-14 | 2018-08-07 | 株式会社小糸制作所 | Optical unit |
| CN110869667A (en) * | 2017-07-26 | 2020-03-06 | 株式会社小糸制作所 | Lamp unit and vehicle headlamp |
| CN110869667B (en) * | 2017-07-26 | 2023-04-04 | 株式会社小糸制作所 | Lamp unit and vehicle headlamp |
| CN111094840A (en) * | 2017-08-24 | 2020-05-01 | 株式会社小糸制作所 | Vehicle lamp |
| US11254384B2 (en) | 2017-08-24 | 2022-02-22 | Koito Manufaciuring Co., Ltd. | Vehicle lamp |
| CN109668116A (en) * | 2017-10-13 | 2019-04-23 | 株式会社小糸制作所 | Lamps apparatus for vehicle |
| CN114963113A (en) * | 2022-03-24 | 2022-08-30 | 浙江比肯科技有限公司 | Light changing mechanism of follow-up steering automobile headlamp, headlamp and automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3007504B1 (en) | 2017-12-22 |
| FR3007504A1 (en) | 2014-12-26 |
| JP2015005428A (en) | 2015-01-08 |
| DE102014211678A1 (en) | 2014-12-24 |
| JP6162497B2 (en) | 2017-07-12 |
| CN104235722B (en) | 2018-10-26 |
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