CN101201146A - Lighting device for vehicle - Google Patents
Lighting device for vehicle Download PDFInfo
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- CN101201146A CN101201146A CNA2007101986022A CN200710198602A CN101201146A CN 101201146 A CN101201146 A CN 101201146A CN A2007101986022 A CNA2007101986022 A CN A2007101986022A CN 200710198602 A CN200710198602 A CN 200710198602A CN 101201146 A CN101201146 A CN 101201146A
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Abstract
The invention relates to a vehicle lighting device, comprising a light source, a light-guide component comprising a light lead-in part arranged at the rear surface side, leading-in the ray of light source and then emitting the ray from the front surface side; a part which is thicker than the edge part of the light-guide component and near to the light lead-in part; a plurality of reflective parts and connecting parts which are formed alternately and continuously in the rear surface side along the direction far away from the light lead-in part, wherein, the reflective part respectively reflects the arrived led-in rays at the interface so as to form rays facing towards to the front surface side direction of the light-guide component; and a shell connected with a position between the edge part of the rear surface of the light-guide component and the light lead-in part, as well as connected with the rear surface side of the light-guide component so as to hold the light source.
Description
Technical field
The present invention relates to a kind of lighting device that is used for vehicle.More specifically, the present invention relates to a kind of improvement of Vehicular illumination device of for example rear combination lamp.
Background technology
Usually, in the lighting device of the vehicle of for example rear combination lamp or high-mount stop lamp, the light of light source via outer lens (design light cover) externally emission to obtain the light emission of expectation.For example shown in Figure 15 (a), lamp 1102 be arranged on the inboard of outer lens 1101 and reflective mirror 1103 be arranged on lamp 1102 around (for example referring to JP-A-2005-123092).In this structure, the light of lamp 1102 directly advances or advances forward and outwards launch via outer lens 1101 via reflective mirror 1103.
In the lighting device of above-mentioned routine, consider waterproof construction, outer lens 1101 need be connected to housing 1104.Usually the marginal portion 1105 (welded edge) with outer lens is welded to housing.When the past surface observation has the lighting device of this structure (Figure 15 (b)), marginal portion (welded edge) thus 1105 bleach and reduced design characteristics.In addition, when illuminating device luminous, can not launch light as the marginal portion of welding portion, this has caused the decline of design characteristics.
In addition, normally, carry out the countermeasure that describes below for heating in the lamp unit of the lighting device that is used for vehicle.For example, JP-A-2005-122945 discloses a kind of structure, will directly be directed to the LED lamp in order to the LED lamp is cooled off from the extraneous air of introducing with respect to the space of housing.In addition, JP-A-2003-5121 discloses a kind of structure, because the free convection that the temperature difference of enclosure interior and air outside produces is used for naturally to the housing ventilation and to its cooling.
Adopted a kind of rear combination lamp that has with the integrally formed taillight/brake lamp of steering indicating light.Usually, use the frequency of taillight/brake lamp very high.By comparison, the frequency of utilization of steering indicating light is lower.Different owing to produce the quantity of heat and be according to the difference of frequency of utilization, so the distributed number of the generation heat in the housing of rear combination lamp has produced deviation.When the cooling structure of considering this deviation was provided, the raising of cooling effectiveness can be expected.Yet, this cooling structure is not carried out particular study.
Summary of the invention
In order to address the above problem, the present invention has following structures.That is, the invention provides a kind of lighting device that is used for vehicle, comprising: light source; Light conducting member, it comprises, the light that the light with light source is introduced and final face side is in the past launched light that is configured in the rear surface side is introduced part, the close light thicker than the marginal portion of light conducting member is introduced the part of part, along towards with light introduce part away from the direction a plurality of reflecting parts and the coupling part that in the side of rear surface, alternately form in a continuous manner, and described reflecting part on the interface respectively the introducing light that arrives of reflection to form towards the light of the direction of the front surface of light conducting member; And housing, it is connected to the rear surface side introducing the position between the part and be attached to light conducting member at the marginal portion of the rear surface of light conducting member and light with ccontaining light source.
In said structure, after the light of light source was introduced in light conducting member, light was reflected in a plurality of reflecting parts of passing through the coupling part connection that form on the rear surface of light conducting member.Thereby consequent light is launched from the front surface of light conducting member.As mentioned above, the photoconduction that utilizes light conducting member makes light extend across the marginal portion of light conducting member to effect and the reflex by a plurality of reflecting parts.Thereby, also can access the light emission from the marginal portion of the front surface of light conducting member.
On the other hand, housing is connected to the position of light conducting member between the marginal portion and light introducing part of the rear surface of light conducting member.Thereby the coupling part of housing is difficult to from visually recognizing.
As mentioned above, according to structure of the present invention, though simple in structurely can obtain lighting device with high design characteristics.
In order to achieve the above object, the invention provides a kind of following rear combination lamp.That is, rear combination lamp provided by the invention comprises: with the taillight/brake lamp part of the light emission of first lamp; The steering indicating light part, it is launched the light of second lamp and is configured in the bottom of taillight/brake lamp part; And the housing of ccontaining first lamp and second lamp; Wherein, taillight/brake lamp part is communicated with in housing with the steering indicating light part, and housing has near first air vent first lamp and near second air vent second lamp.
In rear combination lamp of the present invention, first air vent is used as air admission hole as the tap and second air vent.That is, generation is mobile from the air of second air vent to the first air vent in housing.Thereby first lamp and second lamp have been cooled off.Herein, taillight/brake lamp that frequency of utilization is high partly is arranged on top, thereby is discharged to the outside by the air that taillight/brake lamp partly heats apace near first air vent first lamp.Thereby housing can not be full of heat and cool off effectively by extraneous air.As mentioned above, according to structure of the present invention, owing to consider the frequency of utilization of lamp, so although simple in structurely can carry out cooling down operation effectively.
Description of drawings
Fig. 1 is the angle schematic diagram that is used to explain the surface that forms the reflecting part.
Fig. 2 is the stereogram of the afterbody part of motor vehicles, and rear combination lamp 1 according to the embodiment of the present invention has been installed on it.
Fig. 3 is the plane of rear combination lamp 1.
Fig. 4 is the sectional view that obtains along the line A-A among Fig. 3.
Fig. 5 is used to explain the front surface 31a of scioptics and the schematic diagram that first light is introduced surface 32 formed angles.
Fig. 6 is the angle schematic diagram that is used to explain the surface that forms the reflecting part.
Fig. 7 is the stereogram of motor vehicles afterbody part, and it has rear combination lamp 201 according to the embodiment of the present invention.
Fig. 8 is the plane of rear combination lamp 201.
Fig. 9 is the sectional view that obtains along the line A-A among Fig. 8.
Figure 10 is the plane that is used for schematically explaining the state when taillight/brake lamp part 210 emission light.
Figure 11 is used to explain the front surface 231a of scioptics and the schematic diagram that first light is introduced surface 232 formed angles.
Figure 12 is the sectional view of another embodiment of the present invention, and shown lens 230 comprise as first of inclined surface introduces part 232a.
Figure 13 is the front view of the rear combination lamp 300 of another embodiment of the present invention.
Figure 14 is the sectional view that obtains along the line B-B among Figure 14.
Figure 15 is the topology example of common rear combination lamp, and Figure 15 (a) is that sectional view and Figure 15 (b) are stereograms.
The specific embodiment
At the lighting device that is used for vehicle of the present invention, the light that is incorporated into light conducting member of light source reflects so that light is transformed into towards the light of the direction of light conducting member front surface on the reflecting part of the rear surface of light conducting member side.Thereby last, light is launched from the front surface of light conducting member.As mentioned above, in the present invention, the front surface of light conducting member is as light emission surface, the i.e. outer surface of lighting device.That is to say, when from visual observation lighting device of the present invention, can directly observe the light emission surface (not by lid) of light conducting member.
Be formed with light in the rear surface of light conducting member side and introduce part.It is relative with following light source that light is introduced part.The form that light is introduced part is not special the qualification, yet light is introduced position, structure and the angle initialization of part for making the light of introducing arrive following reflecting part effectively.Consider the efficient that light is introduced, the surface of the light incident of light source (light is introduced the surface) is preferably smooth.Can provide a plurality of light to introduce part.For example, provide the same number of light of number and light source to be used to introduce part.Also can form the light that makes a plurality of light sources and introduce the structure that part is introduced via a light.
Can dispose light and introduce part so that seal light source with recessed form.It is effective for the light introducing efficient that improves light source that such light is introduced part.In addition, adopt the light introducing part of this form to make light source (or its part) to be contained in the light conducting member.Thereby lighting device can be made very compactly.When the light source of light (as a specific example, emitted transverse type LED lamp) is laterally exported in use, use the light of this form to introduce part usually.
In light conducting member, the part of introducing part near light forms thicklyer than the marginal portion of light conducting member.For example, the thickness (distance between front surface and rear surface) of introducing part near light is 2.5 times to 25 times of thickness of the marginal portion (wherein being known as the marginal portion from the distance of the outside genesis of light conducting member less than 5% part of the height of light conducting member) of light conducting member.More specifically, will form near the part that light is introduced part having maximum thickness and thickness setting is for example 15mm to 50mm, and be preferably 25mm to 40mm.On the other hand, the average thickness of the marginal portion of light conducting member is set at for example 3mm to 20mm, and is preferably 5mm to 10mm.In such a way, use thick light conducting member to prevent effectively by light conducting member from the visual observation to the light source or the coupling part of housing.In addition, having obtained good photoconduction makes light be transmitted into the marginal portion of light conducting member effectively to effect.
In the side of the rear surface of light conducting member, except introducing part, light also formed the reflecting part.For example, form a plurality of reflecting parts, they are continuous by the coupling part of inserting betwixt.In this case, reflecting part and coupling part alternately form.The rear surface side of light conducting member forms the shape (in other words, forming a plurality of ladders) of step to obtain the light conducting member of this structure.
Preferably, reflecting part and coupling part are to introduce the outward flange that part is formed up to light conducting member from light.That is, formation is positioned at the edge of outermost reflecting part in order to contact with the outward flange of light conducting member.According to this structure, even marginal portion at light conducting member, owing to produce, so light also can easily be transmitted into edge (periphery) from the front surface of light conducting member with enough brightness towards the effect of the light of the front surface direction of light conducting member by the reflecting part.
In order to reduce from the inhomogeneities of light in brightness of the front surface emission of light conducting member, the form of light conducting member preferably is arranged to, make when and light introduce the front surface of part light conducting member gradually in the separate areas time and the distance between the rear surface continuously or staged reduce.According to this design, in zone, improved the ejaculation efficient of light, thereby obtained even brightness light emission from the front surface side of light conducting member away from light source.Specifically, for example, part forms step towards the outward flange of light conducting member shape can be introduced from light as mentioned above in the rear surface of light conducting member.
Introduce the light that arrives the reflecting part the light that part introduces by the boundary reflection in the reflecting part and be transformed into from light towards the light of the direction of the front surface of light conducting member.In such a way, the reflecting part that forms by a part of utilizing the rear surface produces towards the light of the direction of the front surface of light conducting member.Stipulate the light distribution property of direction of advance that the shape on surface of each reflecting part or angle can be by considering reflection ray or lighting device and at random set.As shown in Figure 1, suppose that by surface (reflecting surface) that is used for the regulation reflecting part and the angle that is used for regulation light introducing surface (light is introduced the surface) formation partly be θ, the angle of introducing surface formation by the front surface (design surface) and the light of light conducting member is θ 1, it is θ 2 that light is introduced lip-deep incidence angle at light, and the refractive index of light conducting member is n, then sets up following relation equation formula.
[equation 1]
θ＝[180°-θ
1-sin
-1{sin(90°-θ
1)/n}+sin
-1{(sinθ
2)/n}]/2
According to this relation equation formula, can be designed for the angle on the surface of stipulating each reflecting part.
The coupling part is the zone that is different from the reflecting part, and it is not for producing definitely towards the zone of the light of the direction of front surface.For example, the coupling part forms by the surface parallel with the direction of advance of the light that arrives this place.When the coupling part does not produce reflex time basically, can prevent that light is towards beyond thought direction (scattered light) and can reduce the inhomogeneities of illumination.
The layer of being made by reflectorized material (reflecting layer) preferably is formed on the surface of reflecting part.Use a kind of like this structure to make it possible to the brightness (luminous intensity) that increases the reflection coefficient of reflecting part and improved lighting device.In addition, thus by using metal material to promote the direction of advance that the regular reflection of reflecting part can accommodation reflex light.As mentioned above, the viewpoint from light distribution property preferably forms the reflecting layer.The reflecting layer can be by for example metal material (aluminium, silver, chromium etc.) deposition, plating, spraying plating or form by pasting metal film.
When from visual observation lighting device of the present invention, can see the reflecting part that is formed on the rear surface by the front surface of light conducting member.Therefore, the form of reflecting part is to a key factor of the design that forms lighting device of the present invention.Thereby, thereby give lighting device can be improved in the reflecting part with high design characteristics design characteristics.For example, when forming aforesaid reflecting part, can access unique quality according to material to be used.Specifically, when the reflecting layer is formed by the metal material of for example aluminium, thereby can realize the unique design characteristic from the metal quality of visually recognizing the reflecting part by light conducting member.Replace and form the reflecting layer or except the reflecting layer, when carrying out roughened surface treatment on the surface in the reflecting part or forming the groove of regulation decorative pattern, can also give reflecting part unique design characteristic.
The housing that is used to hold light source is attached to the rear surface side of light conducting member.Housing is connected to the position between the marginal portion of the rear surface of light conducting member and light introducing part.In such a way, in the present invention, use other parts to connect housing, make the coupling part of housing be difficult to from visually recognizing except the marginal portion.
As mentioned above, in the side of the rear surface of light conducting member, be provided with a plurality of reflecting parts and coupling part.Preferably, by housing being connected to the part of coupling part, housing is attached to the rear surface side of light conducting member.As mentioned above, use with the not directly related part of the generation of reflection ray and be connected housing with reduction that suppresses brightness and the inhomogeneities that suppresses generation brightness.
The coupling part (housing coupling part) that the is connected in housing preferably form with rib is outstanding, because like this can be easily and the space that connects housing definitely and advantageously guaranteed to be used to hold light source.In addition, be difficult to from visually recognizing the advantage of housing coupling part when providing rib shape ledge so that housing is connected to the rear surface, can also obtaining by light conducting member.
The housing coupling part preferably be set in light introduce part near.Introducing in the part of part, form thick LGP near light.According to this structure, more be difficult to see the housing coupling part.More preferably, be designed to being arranged on a plurality of reflecting parts in the rear surface side of light conducting member and coupling part that the order with coupling part and reflecting part forms on the direction of introducing part away from light, and use assigns to be connected housing with the connecting portion of light introducing partial continuous.As mentioned above, set the housing coupling part for part that adjacent light is introduced part, it is more difficult from visually recognizing the housing coupling part to make.
Housing is to connect by for example welding, bonding mode.Owing to the reason of the coupling part that is difficult to see light conducting member and housing and owing to improve design characteristics, preferably adopt welding method.
The number of light source to be used can be by the size of consideration light conducting member or by considering that the photoemissive brightness that must be used for lighting device decides.Usually use a plurality of light sources.For example, these light sources are arranged to a row on the longitudinal direction of light conducting member.
The kind of light source is not particularly limited, and can use LED lamp, bulb etc.In above-mentioned light source, most preferably use the LED lamp.Because the LED lamp is compact, so can make lighting device become compact.In addition, the LED light fixture has the low advantage of the heat of generation and can reduce heat for the influence of member on every side.In addition, the LED light fixture has the advantage that the driving electric energy is low and the life-span is long.The kind of LED lamp is not special the qualification, and can use for example polytype LED lamp of shell formula (cannon ball type), chip.Yet especially preferred is that scioptics are controlled photodistributed LED lamp.
The color of light source can at random be selected.Thereby can use and control the color that a plurality of light sources can change emission light.
(embodiment 1)
Now by using embodiment 1 more specifically to describe structure of the present invention.Fig. 2 is the afterbody stereogram partly that the motor vehicles of the rear combination lamp 1 that is provided with embodiment 1 are shown.Fig. 3 is the front view of rear combination lamp 1.Fig. 4 is the sectional view that obtains along the line A-A among Fig. 3.Rear combination lamp 1 comprises and is used to carry out taillight/brake lamp part 10 that taillight shows and brake lamp shows and is used to carry out the steering indicating light part 20 that turn signal shows.
As shown in Figure 4, rear combination lamp is divided into and comprises lens 30, two kind of LED unit (a LED unit 40 and the 2nd LED unit 45) and housing 50 roughly.In rear combination lamp 1, the outside utilization from the light direct irradiation of front surface 31 emissions of lens 30.That is, the front surface 31 of lens 30 is design surfaces of rear combination lamp 1.Thereby, obtained the special visual effect of three peacekeeping crystals.
The material of lens is not particularly limited, and can use refractive index to be approximately 1.4 to 1.8 optical material and make lens.Specifically, the polycarbonate resin that can adopt acrylic resin, epoxy resin, glass etc. and in this embodiment 1, use.
The one LED unit 40 is relative with the lower surface on the top of lens.That is, the part of the lower surface on the top of lens is as introduce surface (first light is introduced surface 32) about the light of a LED unit 40.It is that smooth surface is used to improve light introducing efficient that first light is introduced surface 32.In this embodiment 1, three the one LED unit 40 are provided with along the longitudinal direction of lens (in Fig. 4 direction) vertical with paper in equally spaced mode.The one LED unit 40 is following LED unit, and the LED lamp 41 that wherein is combined with the emission red light is to send parallel rays by the effect that is arranged on the lens 42 above the LED lamp 41.
The rear surface side on the top of lens is from introducing the stepped of the part on surface 32 to the top edge formation rule of lens near first light.Thereby first reflecting part 33 and the first pontes 34 are alternately continuous.The part of lens 30 is used as above-mentioned reflecting part, thereby has realized simple and compact structure.Even also formed first reflecting part 33 in the marginal portion of lens.
First reflecting part 33 is to be used for the light that sends from a LED unit 40 by boundary reflection to introduce the surface with respect to first light and become about 40 ° of surfaces to about 50 ° of angles (α of Fig. 4) to produce towards the zone of the light of front surface 31 directions and to be formed with.
The first pontes 34 is formed with respect to first light to be introduced the surface at 32 one-tenth about 90 ° of angles, surface and can not produce the normal reflection behavior towards the direction of front surface 31 with first reflecting part, 33 different its.
The structure of first reflecting part 33 and angle are set by the light distribution property of considering taillight/brake lamp part 10.The structure of the first all reflecting parts 33 is not must be identical with angle.Foregoing also is applicable to the first pontes 34.
A part of introducing the continuous the first pontes 34 in surface 32 with first light is outstanding with the shape orientation back of rib.The part that is formed with rib shape ledge 35 is a part (see figure 4) the thickest in lens top.This rib shape ledge 35 is used to connect following housing 50.
As mentioned above, the rear surface side forms stepped.Thereby in the top of lens, the part of introducing surface 32 near first light is the thickest (approximately 35mm).Introducing in the part on surface 32 the part attenuation regularly except the part of rib shape ledge 35 gradually away from first light.The height on the top of lens approximately is 50mm.
In the rear surface side of the bottom of lens, introduce the center that part (second light is introduced part 36) is formed on vertical direction about the light of the 2nd LED unit 45.It is that recess is to be encapsulated in the light output part branch of the 2nd LED unit 45 wherein that second light is introduced part 36.The surface that forms the recess of second light introducing part 36 is smooth.Thereby improved light and introduced efficient.In this embodiment 1, three the 2nd LED unit 45 along the longitudinal direction of lens 30 (in Fig. 4 about the vertical direction of paper) with the equal intervals setting.Thereby it also is to be formed on three positions with equal intervals that second light is introduced part 36.The 2nd LED unit 45 is the LED unit that are combined with the LED lamp 46 of the amber light of emission.The 2nd LED unit 45 produces the light of horizontal direction (360 ° of omniranges) by the effect that is configured in the lens 47 above the LED lamp 46.
The rear side surface of the bottom of lens is to introduce part 36 stepped formation with rule towards the periphery from second light that is positioned at the center.Thereby second reflecting part 37 and second coupling part 38 are alternately continuous.Divide formation second reflecting part 37 in the lower edge portion of lens.Uppermost second reflecting part 37 is connected to lower surface (being formed with the surface that first light is introduced surface 32).Second reflecting part 37 is to be used for the light that sends from the 2nd LED unit 45 by boundary reflection producing towards the zone of the light of front surface 31 directions, and is formed with the surface that becomes about 30 ° to 50 ° angles (β among Fig. 4) with respect to the central axis of the 2nd LED unit 45.
The central axis that second coupling part 38 is formed with respect to the 2nd LED unit 45 becomes the surface at about 90 ° of angles and can not produce the normal reflection behavior towards the direction of front surface 31 with first reflecting part, 37 different its.
The structure of second reflecting part 37 and angle are set by the light distribution property of considering turn signal lamp part 20.The structure of the second all reflecting parts 37 needn't be identical with angle.Foregoing also is applicable to second coupling part 38.
Near second light introducing part, 36 parts that are positioned at of second coupling part 38 are given prominence to the shape orientation back of rib.This rib shape ledge 39 is formed on the thick position of the bottom of lens.As the rib shape ledge 35 on the top that is formed on lens, rib shape ledge 39 is used to connect following housing 50.
As mentioned above, the rear surface side forms stepped.Thereby in the bottom of lens, the part of introducing part 36 near second light is the thickest (approximately 30mm).Introducing in the part of part 36 the part attenuation regularly except the part of rib shape ledge 39 gradually away from second light.The height of the bottom of lens approximately is 35mm.
The light reflection process is applicable to the rear surface side of the lens except first light is introduced surface 32, second light introducing part 36 and rib shape jut 35 and 39.Specifically, reflecting layer 60 forms by the deposition process of aluminum.Thereby forming reflecting layer 60 has improved the reflection efficiency of first reflecting part 33 and second reflecting part 37 and has made the direction of advance of reflection ray consistent.In addition, when when the front surface side of lens is observed rear combination lamp, can be from visually recognizing the reflecting layer 60 that produces the metal quality.
Now, will the illumination operation of rear combination lamp 1 be described.Originally, when carrying out the taillight demonstration, a LED unit 40 is according to luminous with low-light level from the input signal of vehicle side.Introduce the top that surface 32 is introduced in lens from the parallel rays of a LED unit 40 emissions by first light.The light of introducing arrives first reflecting part 33 to be subjected to reflex in first reflecting part 33 and to be transformed into towards the light of the direction of front surface 31.Thereby the light that produces is from the front surface on lens top (Fig. 4, the zone of pointing out by Reference numeral 31a) emission.Herein, owing to used thick lens, by producing via the first pontes 34 continuous a plurality of first reflecting parts 33 and first reflecting part 33 even be configured in the marginal portion of lens, the light of the front surface 31a emission on the top of lens spreads all over the entire portion that comprises the marginal portion towards the light of front surface 31a direction.
Arrival is positioned at away from the luminous flux of first reflecting part 33 of the position of a LED unit 40 and is positioned at luminous flux near first reflecting part 33 of the position of a LED unit 40 less than arrival.Yet, can understand from top description, be positioned at away from first reflecting part 33 of the position of a LED unit 40 very short at a distance of the distance of front surface 31a.Thereby the reflection ray of Chan Shenging is launched from front surface 31a effectively herein.In such a way, owing to the minimizing of the luminous flux that causes at a distance of the distance of a LED unit 40 can be compensated by the increase of light service efficiency, make from the brightness unanimity of the light of front surface 31a emission.
On the other hand, in taillight/brake lamp part 10, used aforesaid very thick lens 30, and a LED unit 40 is not arranged on the rear surface side on the top of lens.Thereby lens 30 are designed to make the light that directly advances to first light introducing surface 32 from the light of front surface 31 incidents all to be reflected to prevent that scioptics 30 from observing directly a LED lamp 40 from the outside on the interface on first light introducing surface 32.That is, when the position a from Fig. 4 or position b observe lens since the total reflection of the front surface 31a of lens or first light introduce surface 32 total reflection and can't be from visually recognizing a LED unit 40.When position c observes lens, will see reflecting layer 60, make and the same existence that can't recognize a LED unit 40 of situation from position a or position b observation lens.In order to produce total reflection described herein, as shown in Figure 5, the refractive index of supposing lens is n, and the angle θ that introduces surface 32 formation by the front surface 31a and first light need satisfy rated condition, promptly following relation equation formula (when setting first light introducing surface 32 is the situation on plane).
[equation 2]
θ＞2sin
-1(1/n)
In order easily to produce total reflection, first light is introduced surface 32 and is preferably smooth.When first light when to introduce surface 32 be smooth, the light that sends from a LED unit 40 can enter into lens 30 effectively and can set the direction of advance of the light that enters.In such a way, consider light service efficiency and light distribution control, it is preferably smooth that first light is introduced surface 32.
In this embodiment 1, are planes because first light is introduced surface 32, realized entering into light well distributed of lens 30.The structure on first light introducing surface 32 is not restricted to the plane, and first light is introduced surface 32 can be by for example curved surface formation arbitrarily.In addition, first light introducing surface 32 can be by forming in conjunction with heteroid surface.
In brake lamp showed, the illumination operation of carrying out was identical with the illumination operation that taillight shows, except a LED unit 40 with high brightness luminescent, and so obtain the emission light of high brightness.
When carrying out the turn signal demonstration, the 2nd LED unit 45 is according to luminous to introduce the bottom that part 36 is incorporated into the light of amber color on lens via second light that is configured in the lens bottom from the input signal of vehicle side.Situation about showing with taillight is the same, introduces light and is transformed into towards the light of front surface 31b direction by second reflecting part 37, makes the front surface 31b emission light of bottom of lens show to carry out turn signal.Thereby as taillight/brake lamp part 10, owing to produce by a plurality of reflecting parts 37 of arriving the marginal portion continuously towards the light of front surface 31b direction, the light of the front surface 31b emission of the bottom of lens spreads all over the entire portion that comprises the marginal portion.In addition, from the brightness of the light of the front surface of lens 31b emission by becoming consistent in increase away from the light service efficiency in the zone of the 2nd LED unit 45.
As mentioned above, in the each luminous procedure for displaying of Assembled lamp 1, the light of emission spreads all over the entire portion of dividing about luminous displaing part.Thereby the demonstration that can realize having fabulous design characteristics and visuality.
In rear combination lamp 1, not the outer edge part that is set in lens 30 for the welding portion of housing 50, but be set in the position with big thickness of the outward flange inside that fully is positioned at lens 30.In addition, because rib shape ledge 35 and 39 is configured and is welded to housing 50 in their end portion office, very difficult from visually recognizing welding portion from the front surface side of lens.Thereby can access Assembled lamp with high design characteristics.In addition, owing to use rib shape ledge to connect housing, so can easily and definitely housing 50 be connected to lens.In addition, easily guaranteed to be used to hold the space of light source (a LED unit 40 and the 2nd LED unit 45).
Because disposing the set positions of rib shape ledge 35 and 39 is coupling part (the first pontes 34 and second coupling part 38), described coupling part is as producing irrelevant zone with light towards front surface 31 directions of lens, so suppressed lowering of luminance and suppressed the generation irregularity in brightness.
The present invention can be applied to the lighting device of multiple vehicle (car, bus, truck etc.).Specifically, the present invention is applicable to rear combination lamp, taillight, brake lamp, high-mount stop lamp etc.
To describe the parts of rear combination lamp of the present invention now in detail.Rear combination lamp comprises taillight/brake lamp part and steering indicating light part.Taillight/brake lamp partly comprises first lamp as light source.Though the kind of first lamp is not special the qualification, is preferably the LED lamp, because the LED light fixture has the advantage of compact conformation, anti-vibration and anti-mechanical shock.The type of LED lamp is not special that limit and can use for example shell formula, SMD polytypes such as (SMD).First lamp can be formed with a plurality of LED lamps.
On the other hand, steering indicating light partly be configured in taillight/brake lamp part below.Steering indicating light partly has second lamp as light source.Identical with first lamp, second lamp is preferably the LED lamp.In addition, second lamp can be formed with a plurality of LED lamps.
Ccontaining first lamp of housing and second lamp.In housing, taillight/brake lamp part partly is communicated with steering indicating light.The material of housing is not particular determination and next definite by considering that plasticity, impact resistance, weather-resistant performance wait.For example can adopt ABS resin, polypropylene (PP) resin etc.Housing is included near first air vent first lamp.Near the center that " first air vent be configured in first lamp " means first air vent is present in the border circular areas that radius is 10mm, be preferably at radius is state in the border circular areas of 5mm, and the center of described border circular areas is set to have in the center of first lamp and the beeline position between the housing.The structure of first air vent is not special the qualification.Can adopt form of slots, circular form, oval form etc.The form of first air vent can have for example width of 8mm to 10mm and the length of 8mm to 10mm, preferably has the length of width and the 8mm to 10mm of 3mm to 5mm.Can use a plurality of holes as first air vent.When using a plurality of lamps to be used for first lamp, can be one first air vent of a lamp configuration.Should be appreciated that can dispose one first air vent is used for a plurality of lamps.
Housing has near second air vent second lamp.Near the center that " second air vent be configured in second lamp " means second air vent is present in the border circular areas of 15mm radius, is preferably the state in the border circular areas of the radius with 8mm, and wherein will have at the center of second lamp and the set positions of the beeline between the housing is the center.The structure of second air vent is not special the qualification.Can adopt circular form, oval form, form of slots etc.For example the opening portion of second air vent can have the circular form of 8mm to 15mm diameter, preferably has the circular form of the diameter of 8mm to 10mm.When using a plurality of lamps to be used for second lamp, can be one second air vent of a lamp configuration.Should be appreciated that can dispose one second air vent is used for a plurality of lamps.
Can apply water-proofing treatment to first air vent and second air vent.For water-proofing treatment, can use the known coating that for example has breathing waterproof film or the water-proofing treatment in the anti-network of rivers.First air vent or second air vent can be simultaneously with the holes that acts on distribution.In such a way, being used for the hole of distribution should separate configuration.
In an embodiment of the invention, in taillight/brake lamp part, the configuration lens are used for introducing part with the light introducing of first lamp and from first surface emission light via first light that is configured in the lower end.Along with lens gradually away from the lower end, the thickness of lens reduces continuously or steppedly.Thereby, because the ejaculation efficient of light increases in away from the zone of first lamp, thereby prevented to produce irregularity in brightness at front surface emission light.In addition, in the rear surface of lens side, a plurality of reflecting parts and coupling part form towards the direction away from the lower end continuously and alternately.Herein, the introducing light that arrives at their boundary reflection of reflecting part is to produce towards the light of the direction of lens front surface.In this structure, the light of first lamp is introduced in lens, and then by reflecting via continuous a plurality of reflecting parts, coupling part.Thereby the light of generation is from the front surface emission of lens.In such a way, owing to utilized the light introducing effect of lens and the reflex by a plurality of reflecting parts, light propagates into the marginal portion of lens.Therefore, the marginal portion from lens also can access the light emission.Reflecting part on the lens rear surface applies reflective processing by the rear surface to lens and forms.For example can use deposition, plating, the spraying plating processing of metal material (aluminium, silver, chromium etc.) or use the stickup of metal film to handle as reflective processing.Otherwise, can carry out roughened surface treatment or form the groove of regulation decorative pattern.
According to the embodiment of the present invention, when from the visual observation rear combination lamp, directly see the front surface (light emission surface) of (situation that does not dispose lid) lens.In addition, being formed on the front surface that reflecting part on the rear surface can scioptics sees.Therefore, the reflecting part has constituted the key factor of the design that forms rear combination lamp of the present invention.Thereby, thereby give rear combination lamp can be improved in the reflecting part with high design characteristics design characteristics.For example, form recess in the rear surface of lens continuously with the decorative pattern of stipulating.When aforesaid reflective processing is applied to such rear surface, just formed reflecting part with continuous recess.In such a way, because the structure that photo-emission part divides depends on the structure of the rear surface of lens, so can easily form the reflecting part of expectation structure.As shown in Figure 6, suppose that by surface (reflecting surface) that is used for the regulation reflecting part and the angle that is used for regulation light introducing surface (light is introduced the surface) formation partly be θ, the angle of introducing surface formation by the front surface (design surface) and the light of light conducting member is θ 1, it is θ 2 that light is introduced lip-deep introducing angle at light, and the refractive index of light conducting member is n, then sets up following relation equation formula.
[equation 3]
θ＝[180°-θ
1-sin
-1{sin(90°-θ
1)/n}+sin
-1{(sinθ
2)/n}]/2
According to this relation equation formula, the angle on surface that can each reflecting part of design code.
In lens, the thickness of introducing the lower end of part as light for example is the scope of 15mm to 50mm, is preferably the scope of 25mm to 40mm.When thickness is too small, probably can reduce light introducing efficient or generation influence for light introducing effect.Yet when thickness was excessive, the thickness of lens was increased to aspiration level or highlyer will causes the increase of weight or the increase of production cost.On the other hand, the thickness of upper end (for the opposite side of lower end) for example is the scope of 3mm to 20mm, is preferably the scope of 5mm to 10mm.Use thick lens prevented effectively scioptics from visual observation to first lamp.In addition, because the thickness of lens is very big, when the past face side was observed lens, what present to the observer was the unique visual effects with three peacekeeping crystals of fabulous design characteristics.
Lens with big thickness are compared with the lens with little thickness, and the easier expansion that produces by the change owing to temperature of the shape of lens changes.When the alteration of form of lens, may cause coming off of reflecting part on the rear surface side that is formed on lens.Yet, in rear combination lamp of the present invention, because the entire portion of device is fully cooling, so the thermal expansion that has suppressed lens is to prevent coming off of reflecting part.
First lamp preferably disposes the radiator of rib shape fin in face side thereafter.In this case, first lamp is arranged so that preferably the light emitting side of first lamp is relative with the lower surface of lens, and preferably forms and make the fin of radiator be parallel to the fore-and-aft direction of lens.In such a way, because the air by first lamp heating tends to move towards the rear in the zone that is provided with first lamp and discharge from first air vent on air trim ground, so improved the cooling effect of device entire portion.
On the other hand, when the rear surface side that first lamp is arranged on lens makes the light emitting side of the lamp of winning relative with the rear surface side of lens, first air vent of housing preferably is configured near the of first lamp and in the top of first lamp, and the fin of radiator preferably is parallel to the above-below direction of lens.In such a way, the fin of radiator is as guider, and the extraneous air that described guider is used for entering from second air vent is towards the superposed first air vent supply.Thereby air trim ground is discharged to the outside from first air vent, thereby strengthened the cooling effect of device entire portion.
Can comprise light scattering medium in the lens.Thereby, promoted the diffusion of light in the lens to have the light of good luminance balance from the front surface emission of lens.Can adopt glass with regulation particle diameter, for example aluminium metal, have the refractive index resin different, silica etc. as light scattering medium with the refractive index of lens.
Will be described below embodiments of the present invention now.
(embodiment 2)
Fig. 7 shows the afterbody stereogram partly of the motor vehicles of the rear combination lamp 201 that disposes embodiment of the present invention 2.Fig. 8 is the front view of rear combination lamp 201.Fig. 9 is the sectional view that obtains along the line A-A among Fig. 8.Rear combination lamp 201 comprises and is used to carry out taillight/brake lamp part 210 that taillight shows and brake lamp shows and is used to carry out the steering indicating light part 220 that turn signal shows.
As shown in Figure 9, rear combination lamp 201 is divided into and comprises lens 230, two kind of LED unit (first lamp 240 and second lamp 245) and housing 250 roughly.In rear combination lamp 201, the outside is what to utilize from the light direct irradiation of front surface 231 emissions of lens 230.That is, the front surface 231 of lens 230 is design surfaces of rear combination lamp 201.Thereby, obtained the special visual effect of three peacekeeping crystals.
The material of lens is not special that limit and can use by refractive index and be approximately the lens that 1.4 to 1.8 light-guide material is made.Specifically, the acrylic resin that can adopt polycarbonate resin, epoxy resin, glass etc. and in this embodiment, use.
As shown in Figure 9, the lower surface 232 on the top of lens 230 is divided into the non-light introducing part 232b that first light that is positioned at the rear surface side is introduced part 232a and is positioned at the front surface side, by the approximate centre of lower surface 232 partly is used as the line of demarcation.First lamp 240 is relative with first light introducing part 232a.In such a way, first light is introduced part 232a and front surface 231 separates, thereby can suitably regulate the thickness of lens 230.That is, improved the free degree of design lens 230.First light is introduced part 232a and is formed smooth surface to improve light introducing efficient.In this embodiment, three first lamps 240 with equally spaced mode in a longitudinal direction (in Fig. 9 vertical direction) with paper be provided with.First lamp 240 is following LED unit, and the LED lamp 241 that wherein is combined with the emission red light is to send parallel rays by the effect that is configured in the lens 242 above the LED lamp 141.
The rear surface side on the top of lens 230 is from introducing the stepped of the part of part 232a to the top formation rule near first light.Thereby first reflecting part 233 and the first pontes 234 are alternately continuous.The part of lens 230 is used as above-mentioned reflecting part, thereby has realized simple and compact structure.
First reflecting part 233 be used for the light that sends from first lamp 240 by boundary reflection to produce towards the zone of the light of the direction of front surface 231 and to form the curved surface (reflecting surface) of introducing the protrusion of part 232a inclination predetermined angular with respect to first light.In the cross section, the angle (α among Fig. 9) of introducing part 232a formation by the curved surface and first light of protrusion is about 40 ° to about 50 °.
The surface of the first pontes 234 is substantially perpendicular to first light introducing part 232a and can produce towards the normal reflection behavior of front surface 231 directions with first reflecting part, 233 different its in its cross section.
The structure of first reflecting part 233 and angle are to set by the light distribution property of considering taillight/brake lamp part 210.The first all reflecting parts 233 is arranged to be subjected to the irradiation of the light that sends from first lamp 240.The structure of the first all reflecting parts 233 is not must be identical with angle.Foregoing also is applicable to the first pontes 234.
As mentioned above, the rear surface side forms stepped.Thereby in the top of lens 230, the part of introducing part 232a near first light is the thickest (approximately 35mm).Introduce the part attenuation regularly of part 232a gradually away from first light.The height on the top of lens 230 approximately is 50mm.
In the rear surface side of the bottom of lens 230, introduce the center that part (second light is introduced part 236) is formed on vertical direction about the light of second lamp 245.It is that recess is to be encapsulated in the light output part branch of second lamp 245 wherein that second light is introduced part 236.The surface that forms the recess of second light introducing part 236 is smooth.Thereby improved light and introduced efficient.In this embodiment 2, three second lamps 245 along the horizontal direction of lens 230 (in Fig. 9 about the vertical direction of paper) with the equal intervals setting.Thereby it also is to be formed on three positions with equal intervals that second light is introduced part 236.Second lamp 245 produces the light of horizontal direction (360 ° of omniranges) by the effect that is configured in the lens 247 above the amber LED lamp 246.
The rear surface side of the bottom of lens 230 is to introduce part 236 stepped formation with rule towards the edge from second light that is positioned at the center.Thereby second reflecting part 237 and second coupling part 238 are alternately continuous.Second reflecting part 237 is to be used for the light that sends from second lamp 245 by boundary reflection producing towards the zone of the light of front surface 231 directions, and is formed with the surface that becomes about 30 ° to 50 ° angles (β among Fig. 9) with respect to the central axis of second lamp 245.
The central axis that second coupling part 238 is formed with respect to second lamp 245 becomes the surface at about 90 ° of angles and can not produce the normal reflection behavior towards the direction of front surface 231 with second reflecting part, 237 different its.
The structure of second reflecting part 237 and angle are set by the light distribution property of considering steering indicating light part 220.The structure and the angle of the second all reflecting parts 237 need not to be fixing.Foregoing also is applicable to second coupling part 238.
As mentioned above, the rear surface side forms stepped.Thereby in the bottom of lens 230, the part of introducing part 236 near second light is the thickest (approximately 30mm).Introduce the part attenuation regularly of part 36 gradually away from second light.The height of the bottom of lens 230 approximately is 35mm.
The light reflection process is applicable to except first light introduces that part 232a, second light introduce part 236 and for the rear surface side of the lens the coupling part of housing 250.Specifically, reflecting layer 260 forms by the deposition process of aluminum.Thereby forming reflecting layer 260 has improved the reflection efficiency of first reflecting part 233 and second reflecting part 237 and has made the direction of advance of reflection ray consistent.In addition, when when the front surface side of lens 230 is observed, can be from visually recognizing the reflecting layer 260 that produces the metal quality.
In the boundary member of the upper and lower of lens 230, light reflection and scattering region 215 form continuously along the horizontal direction of lens 230 vertical direction of paper (in the Fig. 9 with respect to) (seeing Fig. 7 and Fig. 9).In rear combination lamp 201, this light reflection and scattering region 215 leak into steering indicating light part 220 and prevent light leakage in opposite direction from taillight/brake lamp part 210 to prevent light as the barrier of light.
Light reflection and scattering region 215 are by Laser Processing formation and have two layers to eight layers sandwich construction stacked on the vertical direction that is included in lens 230.Each layer is to be made of the set of minute crack.The thickness (vertical length) of light reflection and scattering region 215 is about 5mm.As shown in Figure 9, light reflection and scattering region 215 are formed at the part near the surface of lens 230.Specifically, light reflection and scattering region 215 form the distance between the front surface 231 of light reflection and scattering region 215 and lens be 3mm and between the rear surface of light reflection and scattering region 215 and lens apart from also being 3mm.In such a way, configuration covered widely the light reflection of boundary member and scattering region 215 with the inhibition leakage of light to minimum.
On the other hand, as shown in Figure 7, in the top of lens 230, plane irregularity reflector space 216 is formed on the right side edge part of surface observation in the past.Irregular reflection zone 216 forms by Laser Processing and is made of the set of minute crack.Irregular reflection zone 216 comprises that the structure and its thickness (lateral length) that have with the multi-form one deck of light reflection and scattering region 215 are approximately 1mm.
Will be described below the cooling body in rear combination lamp 201 now.In rear combination lamp 201, first air vent 251 is used as air admission hole as the tap and second air vent 252.That is, generation is mobile from the air of second air vent, 252 to first air vents 251 in housing 250.Thereby first lamp 240 and second lamp 245 have been cooled off.Herein, because the high taillight/brake lamp part 210 of frequency of utilization is arranged on top, so the air of first lamp, 240 heating by taillight/brake lamp part 210 is discharged to the outside apace near first air vents 251 first lamp 240.Simultaneously, introduce extraneous air from second air vent 252.Therefore, thus housing 250 can not be full of the heat entire portion of cooling device effectively.As mentioned above, lamp 201 combined according to the invention is owing to consider the configuration of lamp in housing that frequency of utilization is different each other, so although simple in structurely can carry out cooling down operation effectively.In addition, make the fin of the radiator 243 of first lamp 240 be parallel to the fore-and-aft direction horizontal direction of paper (in the Fig. 9 with respect to) of lens 230.Thereby, in taillight/brake lamp part 210, because the air by the heating of first lamp 240 tends to move towards the rear in the zone that is provided with first lamp 240 and discharge from first air vent 251 on air trim ground, so the entire portion of device is cooled off effectively.As mentioned above, because device is all coolings, the thermal expansion that has suppressed lens 230 comes off to prevent reflecting layer 233.
Now, will the illumination operation of rear combination lamp 201 be described.Originally, when carrying out the taillight demonstration, first lamp 240 is according to luminous with low-light level from the input signal of vehicle side.Introduce the top that part 232 is introduced in lens 230 from the parallel rays of first lamp, 240 emissions by first light.The light of introducing arrives first reflecting part 233 to be subjected to reflex in first reflecting part 233 and to be transformed into towards the light of the direction of front surface 231.Thereby the light that produces is from the front surface on lens 230 tops (Fig. 9, the zone of pointing out by Reference numeral 231a) emission.
In Figure 10, be shown schematically in the state of the taillight/brake lamp part 210 in the emission light process.As from accompanying drawing as can be seen, the zone of the emission light of seeing (first reflecting part 233) and the zone of seeing of not launching light (the first pontes 234) alternately occur.In each first reflecting part 233, can recognize the mirror image 240a of first lamp 240.First reflecting part 233 that forms convex surface can be as the scope of convex mirror with the reflection broad.Thereby the whole mirror image of first lamp 240 can be seen in each first reflecting part 233.That is, the complete mirror image of all first reflecting part, 233 reflections, first lamps 240 is to improve design characteristics.
As can be seen from Figure 10, though first reflecting part 233 has been offset the distance corresponding to reflecting part 233 half length respectively in vertical direction, first reflecting part 233 is continuous in a lateral direction.Utilize this structure, can reduce the ladder of lens rear surface side, thus moulded lens easily.
, owing to use thick lens 230, produce by utilizing the first pontes 234 continuous a plurality of first reflecting parts 233 herein, spread all over entire portion at the light of the front surface 231a emission on the top of lens 230 towards the light of front surface 231a direction.
Arrival is positioned at away from the luminous flux of first reflecting part 233 of the position of first lamp 240 and is positioned at luminous flux near first reflecting part 233 of the position of first lamp 240 less than arrival.Yet, can understand from top description, be positioned at away from first reflecting part 233 of the position of first lamp 240 very short at a distance of the distance of front surface 231a.Thereby the reflection ray of Chan Shenging is launched from front surface 231a effectively herein.In such a way, owing to the minimizing of the luminous flux that causes at a distance of the distance of first lamp 240 can be compensated by the increase of light utilization, make from the brightness unanimity of the light of front surface 231a emission.In addition, because all reflecting parts 233 are by the light irradiation of sending from first lamp 240, so the brightness of the light of emission is consistent.
A part that is incorporated into the light on lens 230 tops advances to the bottom of lens 230.In rear combination lamp 201, light reflection and scattering region 215 are as the barrier of light.That is, the light of sensing lens 230 bottoms is interrupted by light reflection and scattering region 215.Thereby light is cut off and prevents that it from leaking into steering indicating light part 220.That is, the border of light emitting area and non-light emitting area becomes clear to obtain the demonstration of the emission light with fabulous design characteristics and visuality.As mentioned above, thus light emission and scattering region 215 have sandwich construction has realized good light cut-out effect.
On the other hand, a part that is incorporated into the light on lens 230 tops arrives irregular reflection zone 216 and carries out irregular reflection herein.Thereby, when oblique or transverse observation rear combination lamp 201, can observe the light of irregular reflection zone 216 reflections (that is planar light reflection).In such a way, obtained the demonstration of the emission light of wide-angle visuality.Irregular reflection zone 216 be approach and form the marginal portion of the set positions in irregular reflection zone on the top of lens 230.Thereby, prevent that irregular reflection zone 216 from highlighting when the past during surface observation, and reduce to introduce the influence of operation simultaneously for light.
In taillight/brake lamp part 210, used aforesaid very thick lens 230, and first lamp 240 is not arranged on the rear surface side (first lamp 240 is arranged on the lens lower end side) on the top of lens.Thereby lens 230 are designed to make the light that directly advances to first light introducing part 232a from the extraneous light of front surface 231 incidents all to be reflected to prevent that scioptics 230 from observing directly first lamp 240 from the outside on the interface of first light introducing part 232a.That is, when the position a from Fig. 9 or position b observe lens since the total reflection of the front surface 231a of lens or first light introduce part 232a total reflection and can't be from visually recognizing first lamp 240.When position c observes lens, seeing reflecting layer 260, make and the same existence that can't recognize first lamp 240 of situation from position a or position b observation lens.Thereby although simple in structure, this lighting device has successfully guaranteed to hide the existence of first lamp 240, and shows beat all quality under the situation of high design characteristics.
In order to produce above-mentioned total reflection, as shown in figure 11, the refractive index of supposing lens is n, and the angle θ that introduces part 232a formation by the front surface 231a and first light need satisfy rated condition, promptly following relation equation formula (when setting first light introducing part 232a is the situation on plane).
[equation 4]
θ＞2sin
-1(1/n)
On making the entire portion that spreads all over lens top, design lens 230 satisfy above-mentioned condition, when the front surface 231 of scioptics towards the direction of first lamp 240 (promptly, first light is introduced the direction of part 232a) when observing, with the location independent of viewpoint, first lamp 240 can't be seen.That is, the front surface 231 of first lamp, 240 scioptics can't be directly from visually recognizing.In such a way, preferably hidden the existence of first lamp 240 fully.Yet, when the scope of considering the position of observer's viewpoint in the use of rear combination lamp 201 be restricted (for example, in common use, can not observe rear combination lamp 201) from the position a of Fig. 9, if the part of the front surface of lens 231 (for example, the upper rim on the top of lens) do not satisfy above-mentioned condition, in fact can not cause problem yet.Thereby the angle θ that the front surface 231 of scioptics and first light are introduced part 232a formation can satisfy rated condition, promptly following relation equation formula.
[equation 5]
θ＞2sin
-1(1/n)-10°
See directly that from the outside zone that first lamp 240 is passed through can be formed on the front surface 231 of lens definitely.According to this structure, show beat all quality, see suddenly that promptly first lamp 240 or observed first lamp are hiding suddenly.
In order easily to produce total reflection, first light is introduced part 232a and is preferably smooth.When first light when to introduce part 232a be smooth, the light that sends from first lamp 240 can enter into lens 230 effectively and can set the direction of advance of the light that enters.In such a way, consider light utilization and light distribution control, it is preferably smooth that first light is introduced part 232a.
In this embodiment, be the plane because first light is introduced part 232a, realized entering into light well distributed of lens 230.The structure that first light is introduced part 232a is not restricted to the plane, and first light is introduced part 232a can be by for example curved surface formation arbitrarily.In addition, first light introducing part 232a can form by the surface in conjunction with different configurations.
In brake lamp showed, the illumination operation of carrying out was identical with the illumination operation that taillight shows, except first lamp 240 with high brightness luminescent and so obtain emission light from the high brightness of front surface 231a.
When carrying out turn signal when showing, second lamp 245 is according to luminous from the input signal of vehicle side and introduce the bottom that part 236 is incorporated into the light of amber color on lens via second light that is configured in the lens bottom.Situation about showing with taillight is the same, introduces light and is transformed into towards the light of the direction of front surface 231b by second reflecting part 237, makes the front surface 231b emission light of bottom of lens show to carry out turn signal.Thereby, as the same, become consistent by improving to make from the brightness of the light of the front surface 231b emission of lens at light utilization away from the zone of second lamp 245 with taillight/brake lamp part 210.Under the luminous state of turn signal part 220, with the luminous state class of taillight/brake lamp part 210 seemingly, reflection and scattering region 215 demonstrate good interruption effect to prevent the leakage of light.Therefore, high design characteristics and high visual light emission have been obtained.
In this embodiment, first light is introduced part 232a and is formed with parallel relation with non-light introducing part 232b.Yet as shown in figure 12, first light is introduced part 232a and can be formed with respect to non-light introducing part 232b.In the example shown in Figure 12, first light introducing part 232a tilts along the feasible angle minimizing direction that forms by first light introducing part 232a and non-light introducing part 232b.The angle γ that forms by two surfaces approximately is 160 °.Such structure prevents that effectively the front surface 231 of scioptics from observing directly first lamp 240.That is, first light introducing part 232a is inclined to and makes it possible to enlarge the zone that can't directly see first lamp 240.Thereby, thereby the free degree that has improved design lens front surface 231 can make lens 230 attenuation.In addition, first light that tilts is introduced number or the zone that part 232a can increase by first reflecting part 233 effectively.Increased the reflecting part that helps the brightness unanimity.Introducing part 232a and non-light by first light, to introduce the angle that part 232b forms be not special the qualification, for example preferably 120 ° to 180 °.
(embodiment 3)
Figure 13 shows the front view of the rear combination lamp 300 of another embodiment of the present invention.Figure 14 is the sectional view that obtains along the line B-B among Figure 13.Their explanation represented and will omit by those members identical with rear combination lamp 201 by identical Reference numeral.
As shown in figure 14, rear combination lamp 300 is divided into and comprises lens 500, two kind of LED lamp (first lamp 600 and second lamp 245) and housing 700 roughly.In rear combination lamp 300, the outside is what to utilize from the light direct irradiation of front surface 510 emissions of lens 500.That is, the front surface 510 of lens 500 is design surfaces of rear combination lamp 300.Thereby, obtained the special visual effect of three peacekeeping crystals.Rear combination lamp 300 has the structure that in design surface (front surface 510) pro shows first lamp 600 and second lamp 245.
Housing 700 is made by synthetic resin and is comprised first air vent 710, second air vent 720, the mounting portion 730 of first lamp 600 and the mounting portion 740 of second lamp 245.By utilizing heating plate that the marginal portion of housing 700 is welded to the marginal portion of the rear surface side of lens 500, the rear surface that housing 700 is attached to lens 500 makes the downside 210a (taillight/brake lamp part 210a) in the housing 700 be communicated with upside 220a (steering indicating light part 220a).First air vent 710 of housing 700 be configured near and be lower than the position (bottom of paper among Figure 14) of first lamp 600.The form of first air vent 710 is the form of slots with 3mm width and 8mm length.First air vent is formed on the back region that is provided with three first lamps 600.Configuration second air vent 720 near second lamp 245 the housing 700.Distribution 256 is connected to the pedestal that is used for first lamp 600 via second air vent 720 and is used for the pedestal of second lamp 245.
In the rear surface of lens 500 side, three recesses (first light is introduced surface 520) are formed on downside 210a (taillight/brake lamp part 210a) to be encapsulated in the light output part branch of first lamp 600 wherein respectively with the interval that equates.Three recesses (second light is introduced part 560) are formed on upside 220a (steering indicating light part 220a) to be encapsulated in the light output part branch of second lamp 245 wherein respectively with the interval that equates.The surface that forms the recess of first light introducing surface, 520 and second light introducing part 560 is smooth.Thereby improved light and introduced efficient.First lamp 600 produces the light of horizontal direction (360 ° of omniranges) by the effect that is configured in the lens 620 above the red LED lamp 241.Similarly, second lamp 245 produces the light of horizontal direction (360 ° of omniranges) by the effect that is configured in the lens 247 above the amber LED lamp 246.
In rear combination lamp 300, the fin of the radiator 630 of first lamp 600 forms the vertical direction that is parallel to lens 500.Thereby the fin of radiator 630 is as guider, and described guider is used for the extraneous air that will enter from first air vent 710 and is fed to top (Figure 14, from the bottom of paper to top) from the bottom of lens 500.Thereby, owing to the extraneous air that enters into housing 700 from first air vent 710 flows to second air vent 720 reposefully, so improved cooling effect to first lamp 600.
The present invention can be applied to the rear combination lamp of multiple vehicle (car, bus, truck etc.).
The present invention is not restricted to the explanation of the invention described above embodiment, and the present invention is also included within that those of ordinary skill in the art does not deviate from that claims are described and the embodiment (for example, each in the embodiment 1,2 and 3 merges each other) of multiple modification in the scope easily considered.
Claims (14)
1. lighting device that is used for vehicle comprises:
Light source;
Light conducting member comprises,
Light is introduced part, and it is configured in the rear surface side of described light conducting member, and the light of described light source introduces via described light that part is introduced so that from the front surface side emission light of described light conducting member,
Introduce the part of part near described light, its marginal portion than described light conducting member thick and
A plurality of reflecting parts and a plurality of coupling part, they towards with described light introduce part away from direction in the side of described rear surface, alternately form in a continuous manner, described reflecting part on the interface respectively reflection arrive the introducing light at interface to form towards the light of the front surface direction of described light conducting member; And
Housing, it is connected to the position between the marginal portion of the rear surface of described light conducting member and described light introducing part, and described housing is attached to the rear surface side of described light conducting member with ccontaining described light source.
2. the lighting device that is used for vehicle according to claim 1, wherein, described housing is attached to the rear surface side of described light conducting member by the part of coupling part.
3. the lighting device that is used for vehicle according to claim 2, wherein, the described part of described coupling part is a rib shape ledge.
4. the lighting device that is used for vehicle according to claim 2, wherein, the described part of described coupling part be configured in described light introduce part near.
5. the lighting device that is used for vehicle according to claim 2, wherein, described a plurality of reflecting parts and described a plurality of coupling part according to along and described light introduce part away from the described coupling part of direction and the order of described reflecting part form; And
Described housing is connected to the coupling part of introducing partial continuous with described light.
6. the lighting device that is used for vehicle according to claim 1, wherein, the edge that part is formed up to described light conducting member is introduced from described light in described a plurality of reflecting parts and described a plurality of coupling part.
7. the lighting device that is used for vehicle according to claim 1 wherein, is formed with the layer of being made by reflectorized material on the surface of described reflecting part.
8. the lighting device that is used for vehicle according to claim 1 wherein, is formed with the layer of being made by reflectorized material on the whole rear surfaces the described coupling part of introducing partly and be connected with described housing except described light of described light conducting member.
9. the lighting device that is used for vehicle according to claim 1, wherein, described light source is the LED lamp.
10. the lighting device that is used for vehicle according to claim 1, wherein, described light source comprises first lamp and second lamp;
Described lighting device also comprises the taillight of the light of launching described first lamp/brake lamp part and launches the light of described second lamp and be configured in the steering indicating light part of described taillight/brake lamp part bottom;
Ccontaining described first lamp of described housing and described second lamp;
Described taillight/brake lamp part is communicated with in described housing with described steering indicating light part, and
Described housing has near first air vent described first lamp and near second air vent described second lamp.
11. the lighting device that is used for vehicle according to claim 10, wherein, described taillight/brake lamp partly disposes described light conducting member;
Along with the lower end of described light conducting member and described light conducting member gradually away from, the thickness of lens continuously and staged ground reduce.
12. the lighting device that is used for vehicle according to claim 10, wherein, the front surface by described light conducting member incide the lower end that directly advances to described light conducting member in the extraneous light of described light conducting member light on the interface of described lower end by total reflection.
13. the lighting device that is used for vehicle according to claim 11, wherein, described first lamp is arranged so that its light emitting side is relative with the lower surface of described light conducting member, described first lamp disposes the radiator with rib shape fin, and described fin is parallel to the fore-and-aft direction of described light conducting member.
14. the lighting device that is used for vehicle according to claim 10, wherein, described first lamp and described second lamp are the LED lamps.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006-333382 | 2006-12-11 | ||
| JP2006333382A JP4733006B2 (en) | 2006-12-11 | 2006-12-11 | Vehicle lighting |
| JP2006333382 | 2006-12-11 | ||
| JP2007001874 | 2007-01-10 | ||
| JP2007001874A JP2008171604A (en) | 2007-01-10 | 2007-01-10 | Rear combination lamp |
| JP2007-001874 | 2007-01-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101201146A true CN101201146A (en) | 2008-06-18 |
| CN101201146B CN101201146B (en) | 2012-02-08 |
Family
ID=39516437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101986022A Expired - Fee Related CN101201146B (en) | 2006-12-11 | 2007-12-11 | Lighting device for vehicle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4733006B2 (en) |
| CN (1) | CN101201146B (en) |
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| CN102252246A (en) * | 2010-03-31 | 2011-11-23 | 株式会社电装 | Headlamp assembly for motor vehicle |
| CN102313218A (en) * | 2010-06-30 | 2012-01-11 | 现代自动车株式会社 | The taillight that is used for vehicle |
| CN103502725A (en) * | 2011-03-31 | 2014-01-08 | 本田技研工业株式会社 | Lighting device for vehicle |
| CN103629625A (en) * | 2012-08-24 | 2014-03-12 | 财团法人车辆研究测试中心 | Modularized microstructure light guiding device |
| CN104246354A (en) * | 2012-03-07 | 2014-12-24 | 齐扎拉光系统有限责任公司 | Lighting device for a motor vehicle |
| CN104903642A (en) * | 2012-12-28 | 2015-09-09 | 3M创新有限公司 | Multifunction lightguide tailight article |
| CN108626687A (en) * | 2017-03-17 | 2018-10-09 | 丰田自动车株式会社 | Front lamp device for vehicle |
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| US4929866A (en) * | 1987-11-17 | 1990-05-29 | Mitsubishi Cable Industries, Ltd. | Light emitting diode lamp |
| EP1106913B1 (en) * | 1999-12-08 | 2005-05-25 | MENTOR GMBH & CO. | Circuit boards surface mountable display element |
| JP2001210109A (en) * | 2000-01-28 | 2001-08-03 | Koito Mfg Co Ltd | Lighting apparatus for vehicle |
| JP2003077313A (en) * | 2001-06-20 | 2003-03-14 | Ichikoh Ind Ltd | Mounting structure of lighting device for vehicle |
| JP2003173712A (en) * | 2001-12-05 | 2003-06-20 | Toyoda Gosei Co Ltd | Light-emitting device and display |
| JP2004047220A (en) * | 2002-07-10 | 2004-02-12 | Koito Mfg Co Ltd | Vehicular lighting fixture |
| DE102004063574A1 (en) * | 2004-12-30 | 2006-07-13 | Osram Opto Semiconductors Gmbh | Lighting device with multiple semiconductor light sources |
| JP4311371B2 (en) * | 2005-05-09 | 2009-08-12 | 市光工業株式会社 | Vehicle lighting |
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- 2007-12-11 CN CN2007101986022A patent/CN101201146B/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252246A (en) * | 2010-03-31 | 2011-11-23 | 株式会社电装 | Headlamp assembly for motor vehicle |
| CN102252246B (en) * | 2010-03-31 | 2014-08-20 | 株式会社电装 | Headlamp assembly for motor vehicle |
| CN102313218A (en) * | 2010-06-30 | 2012-01-11 | 现代自动车株式会社 | The taillight that is used for vehicle |
| CN103502725A (en) * | 2011-03-31 | 2014-01-08 | 本田技研工业株式会社 | Lighting device for vehicle |
| CN103502725B (en) * | 2011-03-31 | 2015-11-25 | 本田技研工业株式会社 | The lighting device of vehicle |
| CN104246354A (en) * | 2012-03-07 | 2014-12-24 | 齐扎拉光系统有限责任公司 | Lighting device for a motor vehicle |
| CN104246354B (en) * | 2012-03-07 | 2017-07-25 | Zkw集团有限责任公司 | Vapour lighting apparatus for vehicle and automobile front |
| CN103629625A (en) * | 2012-08-24 | 2014-03-12 | 财团法人车辆研究测试中心 | Modularized microstructure light guiding device |
| CN103629625B (en) * | 2012-08-24 | 2016-01-20 | 财团法人车辆研究测试中心 | Modular microfluidic structure guiding device |
| CN104903642A (en) * | 2012-12-28 | 2015-09-09 | 3M创新有限公司 | Multifunction lightguide tailight article |
| CN108626687A (en) * | 2017-03-17 | 2018-10-09 | 丰田自动车株式会社 | Front lamp device for vehicle |
| CN108626687B (en) * | 2017-03-17 | 2021-09-10 | 丰田自动车株式会社 | Headlamp apparatus for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008147036A (en) | 2008-06-26 |
| CN101201146B (en) | 2012-02-08 |
| JP4733006B2 (en) | 2011-07-27 |
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