CN203686641U - Lamp and photomask thereof - Google Patents

Abstract

The utility model provides a photomask of a lamp, which comprises a light incoming surface and a light outcoming surface; a central axis is defined on the light incoming surface; a reflection part is formed on the photomask approximately in the direction of the central axis from the light incoming surface, is approximately arranged symmetric to the central axis in a surrounding manner, and comprises a first surface and a second surface which are opposite to each other; the first surface of the reflection part is far away from the central axis, and is defined as an outer reflection surface; the second surface of the reflection part is near the central axis, and is defined as an inner reflection surface. Therefore, the photomask can distribute light uniformly. The utility model further provides the lamp with the photomask, which can achieve an all-around lighting effect.

Description

Light fixture and light shield thereof

Technical field

The utility model is relevant a kind of light fixture, and relates to especially a kind of full circular alight tool and light shield thereof.

Background technology

There are tengsten lamp or fluorescent lamp in the lamp source that existing light fixture uses, and described tengsten lamp or fluorescent lamp are able to produce the luminous of full circular towards outside centered by self.And light fixture is often in the different lampshade of lamp source outside collocation, and pattern by lampshade or colour match are to produce various situation.

But, because the luminous benefit of light-emittingdiode is more and more higher, make light-emittingdiode have the trend that replaces gradually above-mentioned tengsten lamp or fluorescent lamp.But because of the luminous directive property characteristic of light-emittingdiode tool, its light sending only can scattering in the upper half-space of its fixed position, that is it is not the lighting angle that light-emittingdiode produces is roughly 180 degree, luminous like the center of traditional tengsten lamp or fluorescent lamp energy full circular.And, because of the directive property characteristic of light-emittingdiode, make light-emittingdiode in the time using, easily produce the problems such as dazzle, and then the range of application of light-emittingdiode limited to.

Utility model content

The purpose of this utility model is for providing a kind of light fixture and light shield thereof, and it can change the opticpath that light-emittingdiode sends, and light shield is presented as the full circular illumination effect as candle, and effectively improves the glare problem of light-emittingdiode.

The utility model provides a kind of light fixture, comprise: a light shield, the structure that it is formed in one, and this light shield includes an incidence surface and an exiting surface, this incidence surface definition has a central axis, in this light shield, be formed with a reflecting part, this reflecting part is roughly symmetrical in this central axis around setting and has a relative first surface and a second surface; Wherein, this incidence surface sees through this reflecting part and defines an interior light incidence section and an outer light incidence section, this first surface of this reflecting part is away from this central axis and be formed with an external reflectance face, and this second surface of this reflecting part is close to this central axis and is formed with an interior reflective surface; And a light-emittingdiode, it has a light-emitting area, and this light-emittingdiode is adjacent to the incidence surface of this light shield, and this light-emitting area is towards this incidence surface; In cross section at this light shield perpendicular to this central axis, be adjacent to this exiting surface cross section of this incidence surface and this external reflectance face cross section orthographic projection in the time of this light-emittingdiode, the profile of this light-emitting area be positioned at the profile in this exiting surface cross section and the profile in this external reflectance face cross section between; Wherein, the light that this light-emittingdiode sends from its light-emitting area, wherein a part of light can inject through the interior light incidence section of this incidence surface this light shield and see through this interior reflective surface reflection and certainly the upper half of this exiting surface of this light shield pass, wherein another part light can be injected through the outer light incidence section of this incidence surface this light shield and see through the reflection of this external reflectance face and the upper half of this exiting surface of this light shield and bottom half pass certainly.

Further, this exiting surface is non-shiny surface, and this interior reflective surface and this external reflectance face are shiny surface.

Further, this incidence surface is plane, and this exiting surface is free form surface shape; This reflecting part is to be roughly arranged with formed groove columnar structure along the direction annular of parallel this central axis by this incidence surface, and in this reflecting part, be filled with a medium, the refractive index of this medium is lower than the refractive index of this light shield, or this reflecting part is the toroidal membrane columnar structure that is embedded in this light shield inside.

Further in, this light shield more includes a holding part, this light-emittingdiode is placed in this holding part, and this incidence surface of this light shield roughly develops the light-emitting area in this light-emittingdiode, and this holding part inner edge roughly develops the end face position beyond the lateral margin of this light-emittingdiode and this light-emitting area.

Further, this light fixture more comprises a pedestal, and it comprises a crown top of burner and a radiating seat, and one end of this radiating seat is equiped with this crown top of burner, and this light-emittingdiode is installed in the other end of this radiating seat, and this light-emittingdiode is electrically connected at this crown top of burner.

Further, the centrad of this interior reflective surface and this external reflectance face center line is separately less than or equal to 80nm, and the center line centrad (Ra) of this exiting surface is more than or equal to 10 μ m.

Further, this light shield is on the cross section perpendicular to this central axis, and the area that this interior reflective surface is surrounded is roughly 40% to 60% of minimum area that this exiting surface and this external reflectance face surround.

Further, through the reflection of this interior reflective surface and pass the light of this light shield, its this exiting surface upper half penetrating is corresponding to the length of this central axis, is roughly this exiting surface corresponding to 40% to 60% of the length of this central axis.

The utility model separately provides a kind of light shield of light fixture, comprise: an incidence surface and an exiting surface, this incidence surface definition has a central axis, is formed with a reflecting part in this light shield, this reflecting part is roughly symmetrical in this central axis around setting, and has a relative first surface and a second surface; Wherein, this first surface of this reflecting part is away from this central axis and be defined as an external reflectance face, and this second surface of this reflecting part is close to this central axis and is defined as an interior reflective surface.

Further, this exiting surface is non-shiny surface, and this interior reflective surface and this external reflectance face are shiny surface.

Further, this incidence surface is plane, and this exiting surface is free form surface shape; This reflecting part is to be roughly arranged with formed groove columnar structure along the direction annular of parallel this central axis by this incidence surface, and in this reflecting part, be filled with a medium, the refractive index of this medium is lower than the refractive index of this light shield, or this reflecting part is the toroidal membrane columnar structure that is embedded in this light shield inside.

Further, this light shield is on the cross section perpendicular to this central axis, and the area that this interior reflective surface is surrounded is roughly 40% to 60% of minimum area that this exiting surface and this external reflectance face surround.

Further, this interior reflective surface and this external reflectance face center line centrad are separately less than or equal to 80nm, and the center line centrad (Ra) of this exiting surface is more than or equal to 10 μ m.

In sum, light shield provided by the utility model sees through at the inner reflecting part that forms in the appropriate location of incidence surface, and be formed with interior reflective surface and external reflectance face through reflecting part, so that arrange in pairs or groups in the light-emittingdiode of light shield, its light sending can see through the reflection of interior reflective surface and external reflectance face and be penetrated in exiting surface by uniform distribution adjustably, and then makes the light fixture of this light shield of tool reach the luminous effect of full circular.

For further understanding feature of the present utility model and technology contents, refer to following about detailed description of the present utility model and accompanying drawing, but appended graphic only provide with reference to and explanation use, be not used for interest field of the present utility model to do any restriction.

Accompanying drawing explanation

Fig. 1 is the schematic perspective view of the utility model the first embodiment light shield;

Fig. 2 is the floor map of the utility model the first embodiment light shield by the opticpath of incidence surface incident;

Fig. 3 is the part schematic perspective view of the utility model the first embodiment light shield;

The schematic perspective view of the virtual light-emittingdiode that Fig. 4 produces via incidence surface for the utility model the first embodiment light shield;

The virtual focus point that Fig. 5 produces via incidence surface for the utility model the first embodiment light shield is positioned at the schematic perspective view of output optical zone top area;

Fig. 6 is the schematic perspective view of the utility model the second embodiment light shield;

Fig. 7 is the floor map of the utility model the second embodiment light shield by the opticpath of side direction incidence surface incident;

The schematic perspective view of the virtual light-emittingdiode that Fig. 8 produces via side direction incidence surface for the utility model the second embodiment light shield;

Fig. 9 is the use view of the utility model the second embodiment;

Figure 10 is that the utility model the second embodiment side direction incidence surface is plane, and light shield is by the floor map of the opticpath of side direction incidence surface incident;

Figure 11 is the floor map of the opticpath of the utility model the 3rd embodiment;

Figure 12 is the schematic perspective view of the light fixture of the utility model the 4th embodiment tool light shield;

Figure 13 is the light fixture of the utility model the 4th embodiment tool light shield schematic perspective view in the time that reality is used;

Figure 14 is the schematic perspective view of the utility model the 5th embodiment;

Figure 15 is the decomposing schematic representation of Figure 14;

Figure 16 is the cross-sectional schematic of Figure 15;

Figure 17 is the cross-sectional schematic along X-X hatching line in Figure 16;

Figure 18 is the floor map of the opticpath of Figure 14; And

Figure 19 is the schematic diagram of another form of implementation of the utility model the 5th embodiment.

Wherein, description of reference numerals is as follows:

100 light fixtures

1 light shield

11 light guide zone

111 incidence surfaces

112 extended surfaces

113 side direction incidence surfaces

114 secondary surfaces

115 accommodation spaces

12 output optical zones

121 acting surfaces

122 top area

13 central axis

14 incidence surfaces

141 interior light incidence sections

142 outer light incidence sections

15 exiting surfaces

16 reflecting parts

161 external reflectance faces

162 interior reflective surface

17 holding parts

18 accommodation spaces

2 light-emittingdiodes

21 light-emitting areas

3 pedestals

31 crown tops of burner

32 radiating seats

L1, L1 ', L2, L2 ', L3, L3 ', L4, L4 ' light

A1, a2 circular cross-section

F1, F2, F3, F4 virtual focus point

V1, V1 ', the virtual light-emittingdiode of V2, V2 '

The specific embodiment

(the first embodiment)

Refer to Fig. 1 to Fig. 5, it is the first embodiment of the present utility model, wherein, and the schematic perspective view that Fig. 1,3 and 4 is the present embodiment, the main opticpath schematic diagram that Fig. 2 and 5 is the present embodiment.

As shown in Figure 1, the present embodiment is a kind of light shield 1, the light that it gives out in order to conduct light-emittingdiode 2, described light-emittingdiode 2 in the present embodiment take one as example, but in the time of practical application, it also can be the light-emitting diodes volume array that multiple light-emittingdiodes 2 form.

Described light shield 1 comprises light guide zone 11 and output optical zone 12, and light guide zone 11 and output optical zone 12 established one-body molded and have an identical central axis 13 for ring.Moreover light guide zone 11 is respectively with output optical zone 12 structure that is symmetrical in central axis 13, and above-mentioned light-emittingdiode 2 is positioned on central axis 13.

In addition, in the present embodiment, light shield 1 is take symmetrical centre axis 13 as example, but in the time of practical application, light shield 1 does not need to present full symmetric, and it can form the structure that is roughly symmetrical in central axis 13 according to designer's demand.In the present embodiment, light shield 1 is imitative candlelight shape.

Moreover light shield 1 is solid construction, its material can be any combination of glass, acryl, polyethylene and PMA.

Refer to shown in Fig. 2 to Fig. 4,11 one end, described light guide zone are formed with incidence surface 111 and side direction incidence surface 113, and light guide zone 11 outer rims are formed with extended surface 112.Described incidence surface 111 is positioned on the central axis 13 in the middle of light shield 1 bottom and is set in distance with light-emittingdiode 2, and by this, incidence surface 111 and side direction incidence surface 113 are incident in light guide zone 11 in order to the light sending for above-mentioned light-emittingdiode 2.

Wherein, incidence surface 111 take curved surface as example, but in the time of practical application, also can form free form surface, multiple camber, plane, Fresnel (Fresnel) face or other applicable shapes according to designer's demand in the present embodiment.

Described side direction incidence surface 113 from the downward extended loop of incidence surface 111 periphery establish form.And incidence surface 111 defines accommodation space 115 with 113 encirclements of side direction incidence surface, described accommodation space 115 is to put above-mentioned light-emittingdiode 2.

Wherein, above-mentioned side direction incidence surface 113 take curved surface as example, but in the time of practical application, also can form plane, parabola, free form surface, multiple camber or other applicable shapes according to designer's demand in the present embodiment.

12Zi light guide zone, described output optical zone 11 other ends extend institute and form (that is light guide zone 11 is away from one end of incidence surface 111).Output optical zone 12 outer rims are formed with acting surface 121, described acting surface 121 from extended surface 112 away from one end of incidence surface 111 extend smoothly form, and 121 of acting surfaces around output optical zone 12 volumes from contiguous light guide zone 11 towards dwindling gradually away from the direction of light guide zone 11.That is acting surface 121 to the distance of central axis 13 is dwindled away from the direction of light guide zone 11 gradually from contiguous light guide zone 11 courts.In the present embodiment, this acting surface 121 has reflection concurrently and goes out light characteristic, and its reflex producing also can be defined as total reflection effect further.

And above-mentioned acting surface 121 is curved surface, that is acting surface 121 can be parabola, free form surface, multiple camber or other applicable shapes.Wherein, roughly rounded perpendicular to 12 cross sections, output optical zone of central axis 13, but the utility model is not as limit.In addition, acting surface 121 also can be non-shiny surface, for example, implement the surface treatment such as surface atomizing or concavo-convex design, is beneficial to light dispersed, and then makes the surface light emitting of light shield 1 output optical zone 12 present comparatively soft visual experience.

Moreover, the main light conduction path that the present embodiment light shield 1 has, can make the light major part that is incident in light shield 1 go out from output optical zone 12 transmissions, use light shield 1 is presented as the full circular illumination effect as tengsten lamp, and effectively improve the glare problem that light-emittingdiode 2 easily produces.For making easily to understand the main light conduction path of the present embodiment light shield 1, Fig. 2 and Fig. 3 will represent that part symmetric beam path is as example take linear light, but not be limited with above-mentioned opticpath.

As shown in Figure 2, the light L1 that light-emittingdiode 2 sends, by the incidence surface through light guide zone 11 111, enters light guide zone 11 so that light L1 produces refraction, is then directed to the acting surface 121 of central axis 13 1 sides.Thereafter, through the acting surface 121 reflection ray L1 of central axis 13 1 sides to the acting surface 121 of central axis 13 opposite sides to transmit described output optical zone 12.

In more detail, as shown in Figure 3, in the time that light L1 is directed to the acting surface 121 of central axis 13 1 sides, both intersection points of light L1 and output optical zone 12 acting surfaces 121 are positioned at the periphery of circular cross-section a1.In the time of the acting surface 121 reflection ray L1 of central axis 13 1 sides, light L1 will first pass through central axis 13, thereafter, just be directed to the acting surface 121 of central axis 13 opposite sides, now, both intersection points of light L1 and output optical zone 12 acting surfaces 121 are positioned at the periphery of circular cross-section a2.The area of described circular cross-section a2 is less than the area of circular cross-section a1.

Wherein, except light L1 passes through above-mentioned circular cross-section a1 periphery and circular cross-section a2 periphery and transmits described output optical zone 12, be derived from the light L1 ' at identical luminous place with light L1, its also through above-mentioned circular cross-section a1 periphery and circular cross-section a2 periphery to transmit described output optical zone 12.By this, the extension line that penetrates light L1, L1 ' outside output optical zone 12 intersects the central axis in output optical zone 12 13 to be formed with virtual focus point F1.

In like manner, light-emittingdiode 2 sends light L2, L2 ' are formed with virtual focus point F2 (as shown in Figure 2) on central axis 13.From user visually, will think that above-mentioned virtual focus point F1, F2 are luminous point.And, in the present embodiment, except above-mentioned light L1, L1 ' and light L2, L2 ', all the other light (not shown) that light-emittingdiode 2 sends are after incidence surface 111, can on central axis 13, form multiple virtual focus point, use the visual effect that presents virtual filament (virtual filament).But be not limited with above-mentioned, can arrange in pairs or groups user's demand or under different situation environment of the utility model, produces quantity, the different virtual luminous point in position.

For example, with the formation position of above-mentioned virtual focus point F1, F2, while sending due to light L1, L1 ', L2, L2 ' self-luminous diode 2, the distance of light L1, L1 ' decentre axis 13 is less than the distance of light L2, L2 ' decentre axis 13, and by the curvature design of incidence surface 111, light L1, L1 ', L2, L2 ' are incident in after light shield 1 via incidence surface 111, and the angle of light L1, L1 ' and central axis 13 is less than the angle of light L2, L2 ' and central axis 13.Thereafter, change design by the curvature of acting surface 121, make light L1, L1 ', L2, L2 ' after acting surface 121 reflections, its virtual focus point F1 forming is greater than the distance of virtual focus point F2 from light-emittingdiode 2 from the distance of light-emittingdiode 2.

Moreover, above-mentioned light L1, L1 ' are all derived from the identical luminous place of light-emittingdiode 2, and the light (not shown) of distributing in all the other positions of light-emittingdiode 2 can form other virtual focus point (multiple virtual focus point) in above-mentioned virtual focus point F1 periphery, use and make light shield 1 form a virtual light-emittingdiode V1 (as shown in Figure 4) in the imaging of above-mentioned virtual focus point F1 place.

In like manner, light shield 1 forms another virtual light-emittingdiode V1 ' (as shown in Figure 4) in above-mentioned virtual focus point F2 place's imaging.

By this, when light shield 1 is arranged at light-emittingdiode 2 top by user, light shield 1 will present a kind of luminous vision perception of full circular that produces towards outside centered by virtual light-emittingdiode V1, V1 '.That is light shield 1 will present as the full circular illumination effect as tengsten lamp.

In addition, the reflex producing in above-mentioned acting surface 121 is total reflection effect, uses and makes light shield 1 present best leaded light and illumination effect, and light can be sent at forward and side direction comparatively equably.

Moreover, can change design by incidence surface 111 and the curvature of output optical zone 12 acting surfaces 121, make virtual focus point or virtual light-emittingdiode be positioned at the optional position on central axis 13.

Separately, light shield 1 as shown in Figure 5, its curvature by incidence surface 111 increases, the guiding with output optical zone 12 acting surfaces 121 through its incidence surface 111 when light, can be formed with virtual focus point, it is compared to above-mentioned virtual focus point F1, F2 further from described light-emittingdiode 2, makes imaging be formed at virtual light-emittingdiode (not shown) in light shield 1 to be positioned at the top area 122 of output optical zone 12.

Wherein, the top area 122 of output optical zone 12 means in the present embodiment, when acting surface 121 extends towards the direction away from light guide zone 11 from contiguous light guide zone 11, after acting surface 121 curvature change, around 12 positions, output optical zone.

In addition, though above-mentioned to form two virtual light-emittingdiode V1, V1 ' as example, in the time of practical application, not as limit.That is designer can the variation design with output optical zone 12 acting surfaces 121 by incidence surface 111, make to be formed with one or more virtual light-emittingdiodes (figure slightly) in the output optical zone 12 of light shield 1.

(the second embodiment)

Refer to shown in Fig. 6 to Figure 10, it is the second embodiment of the present utility model, this enforcement is similar with the first embodiment, both are by Main Differences, light shield 1 light guide zone 11 outer rims of the present embodiment are formed with secondary surface 114, use and make the present embodiment except the main light conduction path described in thering is the first embodiment, also comprise another kind of light conduction path.

In more detail, refer to shown in Fig. 7, light guide zone 11 outer rims are formed with extended surface 112 and secondary surface 114,112 of above-mentioned extended surfaces around light guide zone 11 volumes from contiguous light-emittingdiode 2 towards dwindling gradually away from the direction of light-emittingdiode 2.That is extended surface 112 to the distance of central axis 13 is dwindled away from the direction of light-emittingdiode 2 gradually from contiguous light-emittingdiode 2 courts.

Described secondary surface 114 extends institute from extended surface 112 away from one end of acting surface 121 and forms, and secondary surface 114 to the distance of central axis 13 is dwindled away from the direction of extended surface 112 gradually from contiguous extended surface 112 courts.And the reflex that this secondary surface 114 produces also can be defined as total reflection effect further.

Wherein, above-mentioned secondary surface 114 take curved surface as example, but in the time of practical application, also can form plane, parabola, free form surface, multiple camber or other applicable shapes according to designer's demand in the present embodiment.

By this, the monnolithic case of light shield 1 is roughly candlelight shape, makes light shield 1 except in order to change the opticpath that light-emittingdiode 2 sends, and can also have effect handsome in appearance concurrently simultaneously.

Moreover for making easily to understand the another kind of light conduction path of light shield 1, Fig. 7 will represent that part symmetric beam path is as example take linear light, but not be limited with above-mentioned opticpath.

The light L3 that light-emittingdiode 2 sends is by the side direction incidence surface 113 through light guide zone 11, so that producing refraction, light L3 enters light guide zone 11, then be directed to the secondary surface 114 of light guide zone 11, through secondary surface 114 reflection ray L3 to the acting surface 121 of central axis 13 1 sides to transmit described output optical zone 12.

And, the light L4 that light-emittingdiode 2 sends also can be through the side direction incidence surface 113 of light guide zone 11, enter light guide zone 11 so that light L4 produces refraction, be then directed to the secondary surface 114 of light guide zone 11, the acting surface 121 through secondary surface 114 reflection ray L4 to central axis 13 1 sides.Thereafter, through the acting surface 121 reflection ray L4 of central axis 13 1 sides to the acting surface 121 of central axis 13 opposite sides to transmit described output optical zone 12.

The virtual focus point F1 producing as the first embodiment light L1, L1 ', light L3, the L3 ' that light-emittingdiode 2 sends and light L4, L4 ' are also formed with respectively virtual focus point F3, F4 on the central axis 13 of output optical zone 12 top area 122.And, in the present embodiment, except above-mentioned light L3, L3 ' and light L4, L4 ', all the other light (not shown) that light-emittingdiode 2 sends are after side direction incidence surface 113, can on the central axis 13 of output optical zone 12 top area 122, form multiple virtual focus point, use the visual effect that presents virtual filament.But be not limited with above-mentioned, can arrange in pairs or groups user's demand or under different situation environment of the utility model, produces quantity, the different virtual luminous point in position.

For example, with the formation position of above-mentioned virtual focus point F3, F4, by the curvature design of side direction incidence surface 113, make light L3, L3 ', L4, L4 ' after side direction incidence surface 113 is incident in light shield 1 and is reflected by secondary surface 114, light L3, L3 ' are greater than the angle of light L4, L4 ' and central axis 13 with the angle of central axis 13, and then make its virtual focus point F3 forming be greater than the distance of virtual focus point F4 from light-emittingdiode 2 from the distance of light-emittingdiode 2.

Moreover, described light L3, L3 ' are all derived from the identical luminous place of light-emittingdiode 2, and the light (not shown) of distributing in all the other positions of light-emittingdiode 2 can form other virtual focus point (multiple virtual focus point) in above-mentioned virtual focus point F3 periphery, use and make light shield 1 form a virtual light-emittingdiode V2 (as shown in Figure 8) in the imaging of above-mentioned virtual focus point F3 place.

In like manner, light shield 1 forms another virtual light-emittingdiode V2 ' (as shown in Figure 8) in above-mentioned virtual focus point F4 place's imaging.It should be noted that likely V2, V2 ' image in the position of output optical zone 12 top area 122 very approaching, and form multiple virtual image, so user is in visually may only feeling the virtual light-emittingdiode of an overlapping.

By this, in the time that light shield 1 is arranged at light-emittingdiode 2 top by user, output optical zone 12 top area 122 of light shield 1 will present a kind of luminous vision perception of full circular that produces towards outside centered by virtual light-emittingdiode V2, V2 '.That is light shield 1 will present as the full circular illumination effect as tengsten lamp.

Moreover Fig. 8 system is with in order to virtual light-emittingdiode V2, V2 ' to be described, but not the imaging effect of the present embodiment light shield 1 in the time using.The light shield 1 of the present embodiment is in the time using, and it will present four virtual light-emittingdiode V1, V1 ', V2, V2 ' (as shown in Figure 9) simultaneously, but in the time of practical application, is not limited with above-mentioned quantity.

In addition, the present embodiment can the curvature by side direction incidence surface 113 change design, makes virtual focus point be positioned at the optional position on the central axis 13 of output optical zone 12 top area 122.

Separately, light shield 1 as shown in figure 10, its side direction incidence surface 113 is plane, when light through side direction incidence surface 113 to be incident in after light shield 1, its opticpath is different from the path of above-mentioned light L3, L3 ', L4, L4 ', and can on the central axis 13 of output optical zone 12 top area 122, be formed with virtual focus point, and can make imaging be formed at virtual light-emittingdiode (not shown) in light shield 1 to be positioned at the top area 122 of output optical zone 12.Wherein, the position of those virtual focus point is compared to virtual focus point F3, F4, by the movement presenting a little.

The reflex that secondary surface 114 described in the present embodiment produces is total reflection effect, uses and makes light shield 1 present best leaded light and illumination effect, and light can be sent at forward and side direction comparatively equably.

(the 3rd embodiment)

Refer to shown in Figure 11, it is the 3rd embodiment of the utility model utility model, the present embodiment and the second embodiment are similar, both are by Main Differences, and incidence surface 111 and the side direction incidence surface 113 of the light shield 1 of the present embodiment surrounds roughly measure-alike with light-emittingdiode 2 of the accommodation space 115 that defines.

In more detail, incidence surface 111 roughly develops (also can develop or leave gap completely), in the light-emitting area of light-emittingdiode 2, side direction incidence surface 113 roughly develops in the lateral margin of light-emittingdiode 2.And have the light conduction path about the present embodiment, be example by the linear light expressed portion light splitter path take shown in Figure 11, but be not limited with above-mentioned opticpath.

The light that light-emittingdiode 2 sends is the incidence surface through light guide zone 11 111, so that light injects in light guide zone 11, and the light that is incident in light guide zone 11 roughly can be divided into two kinds of conducting paths.

Wherein, the first conducting path is the acting surface 121 that light is directed to central axis 13 1 sides, thereafter, through acting surface 121 reflection rays of central axis 13 1 sides to the acting surface 121 of central axis 13 opposite sides to transmit described output optical zone 12.

The second conducting path is the secondary surface 114 that light is directed to light guide zone 11, the acting surface 121 through secondary surface 114 reflection rays to central axis 13 1 sides.Thereafter, through acting surface 121 reflection rays of central axis 13 1 sides to the acting surface 121 of central axis 13 opposite sides to transmit described output optical zone 12.

Moreover, the above-mentioned conducting path that is incident in two kinds of light of light guide zone 11 through incidence surface 111, it can form multiple virtual focus point on the central axis of output optical zone 12 13, uses the visual effect that presents virtual filament.And the position of above-mentioned virtual focus point can be adjusted by acting surface 121 and the curvature variation design of secondary surface 114.

(the 4th embodiment)

Refer to Figure 12 and Figure 13, it is the light fixture 100 with above-mentioned arbitrary embodiment light shield, the light shield 1 that includes pedestal 3, is installed in the light-emittingdiode 2 of pedestal 3 and is installed in pedestal 3 and be set in distance with light-emittingdiode 2.

Wherein, above-mentioned pedestal 3 has the crown top of burner 31 and radiating seat 32, and one end of described radiating seat 32 is equiped with the crown top of burner 31.And light-emittingdiode 2 is installed in the other end of radiating seat 32, and light-emittingdiode 2 is electrically connected at the above-mentioned crown top of burner 31.

Light shield 1 described herein is the light shield 1 that above-mentioned arbitrary embodiment discloses, and it is installed on radiating seat 32, and light-emittingdiode 2 is arranged in the accommodation space 115 of light shield 1.

By this, in the time that the crown top of burner 31 is switched on, make it luminous conducting light-emittingdiode 2, as shown in figure 13, and the light that light-emittingdiode 2 sends is via the conduction of light shield 1, to make light shield 1 present one and centered by virtual light-emittingdiode V1, V1 ', V2, V2 ', produce the luminous vision perception of full circular towards outside, and then make the light fixture 100 of this light shield 1 of tool produce the illumination effect of similar traditional candle bulb.

(the 5th embodiment)

Refer to Figure 14 to Figure 19, it is the 5th embodiment of the utility model utility model, the Partial Feature of the present embodiment and above-mentioned first to fourth embodiment are similar, therefore exist together mutually and no longer repeat (as: material of light shield 1), and difference place general description is as follows.

Refer to Figure 14 to Figure 16, it is a kind of light fixture 100, includes a light shield 1 and a light-emittingdiode 2.The structure that above-mentioned light shield 1 is formed in one, and light shield 1 includes the exiting surface 15 that an incidence surface 14 and is free form surface shape.

Wherein, above-mentioned incidence surface 14 is arranged in one end (as light shield 1 bottom of Figure 15) of light shield 1 and is plane, and exiting surface 15 roughly forms the overall appearance of light shield 1.Say further, exiting surface 15 is roughly candlelight shape in the present embodiment, and exiting surface 15 is apered to a tip away from an end (as exiting surface 15 top ends in Figure 15) of incidence surface 14.Exiting surface 15 shapes form and curvature is ordered depending on light distribution requirements, not as limit.Moreover exiting surface 15 can roughly be divided into upper half and bottom half in the present embodiment, and will in following introduction, be further described about exiting surface 15 upper halfs and bottom half.

Described incidence surface 14 definition have a central axis 13, and above-mentioned central axis 13 is equivalent to the perpendicular bisector of incidence surface 14 in the present embodiment, and the shape of light shield 1 is roughly symmetrical in central axis 13.In light shield 1, be formed with a reflecting part 16, reflecting part 16 is roughly symmetrical in central axis 13 around arranging and having a relative first surface and a second surface, and above-mentioned first surface is away from central axis 13, and the contiguous central axis 13 of second surface.And incidence surface 14 sees through reflecting part 16 and can be divided into a light incidence section 141 and that is positioned at reflecting part 16 inner sides and be positioned at the outer light incidence section 142 in reflecting part 16 outsides.

In the present embodiment, reflecting part 16 is to be roughly arranged with formed groove columnar structure along the direction annular of parallel central axis 13 by incidence surface 14.In the reflecting part 16 of described tubulose, be filled with a medium, and the refractive index of medium is lower than the refractive index of light shield 1, use and make reflecting part 16 be formed with an external reflectance face 161 away from the first surface of central axis 13, and the second surface of reflecting part 16 contiguous central axis 13 is formed with an interior reflective surface 162.

In the present embodiment, cylindrical and its depth-to-width ratio of described reflecting part 16 is roughly 20, and above-mentioned medium is air, reflecting part 16 is less than or equal to 80nm away from the first surface of central axis 13 and the second surface of contiguous central axis 13 center line centrad (Ra) separately, is equivalent to shiny surface.By this, make reflecting part 16 possess respectively and have the function of total reflection light and be defined as respectively above-mentioned external reflectance face 161 and interior reflective surface 162 away from the first surface of central axis 13 and the second surface of contiguous central axis 13.But in the time of practical application, light shield 1 is not limited with above-mentioned condition, for instance, the depth-to-width ratio viewable design person demand of reflecting part 16 and being adjusted, and medium also can adopt refractive index other materials lower than light shield 1.In addition, as shown in figure 19, it is reflecting part 16 another enforcement aspects of the utility model utility model, specifically, described light shield 1 can also utilize secondary operations mode in the inner portion form the reflecting part 16 of a similar tubular baffle, use that incidence surface 14 is separated is that a light incidence section 141 and that is positioned at reflecting part 16 inner sides and contiguous central axis 13 is positioned at reflecting part 16 outsides and the outer light incidence section 142 away from central axis 13.

For making light shield 1 can present preferably illumination effect, the reflecting part of light shield 1 16 is designed as follows, shown in Figure 17, light shield 1 is on the cross section perpendicular to central axis 13, and the area that interior reflective surface 162 is surrounded is roughly 50% of both minimum areas (being equivalent to position area of section along X-X hatching line in Figure 16) of surrounding of exiting surface 15 and external reflectance face 161.Say further, interior light incidence section 141 areas of incidence surface 14 are roughly equal to 50% area of outer light incidence section 142.

And in the time of practical application, the area that described interior reflective surface 162 is surrounded can be designed to 40% to 60% of both minimum areas of surrounding of exiting surface 15 and external reflectance face 161.Say further, interior light incidence section 141 areas of incidence surface 14 are roughly equal to 40% to 60% of outer light incidence section 142 areas.

Moreover, described light shield 1 is on the cross section perpendicular to central axis 13 (as Figure 17), interior reflective surface 162 profiles and external reflectance face 161 profiles of reflecting part 16 are all rounded, and the diameter of external reflectance face 161 profiles and interior reflective surface 162 profiles is poor the smaller the better.Say further, poor more hour when above-mentioned diameter, can allow fewer light (light-emitting area 21 of light-emittingdiode 2 is sent) enter in reflecting part 16.Moreover in the time that reflecting part 16 is the structure of the similar dividing plate shown in Figure 19, described diameter is poor is 0, in other words, the reflecting part 16 shown in Figure 19 does not have light leak situation completely and produces.

Described exiting surface 15 is non-shiny surface, says further, and the center line centrad of exiting surface 15 is more than or equal to 10 μ m.Moreover exiting surface 15 also can be implemented the surface treatment such as surface atomizing or concavo-convex design, is beneficial to light dispersed, and then make light shield 1 exiting surface 15 present comparatively soft visual experience when luminous.

Separately, as Figure 14 to Figure 16, described light shield 1 more includes a holding part 17, and above-mentioned holding part 17 from light shield 1 position between incidence surface 14 and exiting surface 15 outwardly one extend institute form.And above-mentioned holding part 17 surrounds especially with incidence surface 14 and is formed with an accommodation space 18, and accommodation space 18 can be roughly measure-alike with light-emittingdiode 2.But implement in aspect in other, light shield 1 also can not must be formed with holding part 17.For instance, on the radiating seat 32 of pedestal 3 as described in the fourth embodiment, can be provided with the holding part (figure slightly) of a groove shape, use and reach accommodating and function fixing light-emittingdiode 2.

Described light-emittingdiode 2 has a light-emitting area 21, and light-emittingdiode 2 is adjacent to the incidence surface 14 of light shield 1, and the light-emitting area 21 of light-emittingdiode 2 is towards the incidence surface 14 of light shield 1.Say further, the incidence surface 14 of light shield 1 roughly develops (also can develop or leave gap completely) in the light-emitting area 21 of light-emittingdiode 2, and described holding part 17 inner edges roughly develop the end face position (as shown in figure 16) beyond lateral margin and the light-emitting area 21 of light-emittingdiode 2.

For making light shield 1 can present preferably illumination effect, by as follows the corresponding relation design between light-emittingdiode 2 and light shield 1, shown in Figure 17, in cross section at light shield 1 perpendicular to central axis 13, while being adjacent to both orthographic projections of exiting surface 15 cross sections of incidence surface 14 and external reflectance face 161 cross sections (be equivalent to position at Figure 16 the cross section along X-X hatching line) in light-emittingdiode 2, the profile of light-emitting area 21 is between the profile in exiting surface 15 cross sections and the profile in external reflectance face 161 cross sections.And light-emitting area 21 centers of light-emittingdiode 2 are preferably and are seated on central axis 13.

By this, as shown in figure 18, the light that light-emittingdiode 2 sends from its light-emitting area 21, wherein the light of a part (as: roughly account for the area of 50% light-emitting area 21 and be positioned at the light that the central part of light-emitting area 21 sends) can be injected light shield 1 through the light incidence section 141 of incidence surface 14, and continuous and pass light shield 1 through the total reflection of interior reflective surface 162 from the upper half of exiting surface 15; The light of another part (as: roughly account for the area of 50% light-emitting area 21 and be positioned at the light that send at the peripheral position of light-emitting area 21) can be injected light shield 1 through the outer light incidence section 142 of incidence surface 14, and continuous and see through the total reflection of external reflectance face 161 and pass upper half and the bottom half of light shield 1 from exiting surface 15.

Wherein, through the reflection of interior reflective surface 162 and pass the light of light shield 1, exiting surface 15 upper halfs that it penetrates, corresponding to the length (being equivalent to the height of upper half) of central axis 13, are roughly 50% (be equivalent to the half height of exiting surface 15) of exiting surface 15 corresponding to the length of central axis 13.That is to say, exiting surface 15 bottom halfs, corresponding to the length (being equivalent to the height of bottom half) of central axis 13, are roughly 50% (be equivalent to the half height of exiting surface 15) of exiting surface 15 corresponding to the length of central axis 13.But in the time of practical application, through the reflection of interior reflective surface 162 and pass the light of light shield 1, exiting surface 15 upper halfs that it penetrates are corresponding to the length of central axis 13, can be designed as exiting surface 15 corresponding to 40% to 60% of the length of central axis 13.

By this, see through the relative scale design (being preferably 50% area that interior light incidence section 141 areas are equal to outer light incidence section 142) of 141Yu Wai light incidence section, interior light incidence section 142, so that the light that light-emittingdiode 2 sends can distribute according to the desired ratio of designer inject in the reflecting part 16 of light shield 1 with reflecting part 16 outside, then see through the total reflection of reflecting part 16, and the light in light shield 1 is passed from upper half and the bottom half of light shield 1 equably, reach good full circular illumination effect.

Should be noted that, the designed reflecting part 16 of the present embodiment Figure 16 is high-aspect-ratio, and in the plane at incidence surface 14 places, the shared area of reflecting part 16 is minimum, so the light that light-emittingdiode 2 self-luminous faces 21 send, it enters shared several the ignoring of light ratio of reflecting part 16.Moreover, the reflecting part 16 of the similar dividing plate as designed in Figure 19 of the present embodiment, in the time that light enters light shield 1, can not affect completely especially distribution of light in reflecting part 16 with outer ratio.

In addition, the light fixture 100 of the present embodiment also can comprise the pedestal 3 (figure slightly) described in the 4th embodiment, uses light shield 1 and light-emittingdiode 2 are installed on pedestal 3.Moreover, though with the example that is configured to of the similar dividing plate shown in the groove columnar structure shown in Figure 16 and Figure 19, not getting rid of other, the reflecting part 16 of the present embodiment reasonably substitutes enforcement aspect.

Described in the present embodiment, light shield 1 sees through in the appropriate location of incidence surface 14 and forms reflecting part 16, and be formed with interior reflective surface 162 and external reflectance face 161 through reflecting part 16, so that arrange in pairs or groups in the light-emittingdiode 2 of light shield 1, its light sending can see through interior reflective surface 162 with the total reflection of external reflectance face 161 adjustably by uniform distribution in upper half and the bottom half of exiting surface 15, and then make the light fixture 100 of this light shield 1 of tool reach the luminous effect of full circular.Say further, while viewing and admiring due to user, the light fixture 100 of this light shield 1 of tool presents the luminous vision perception of a kind of full circular, and then produces the illumination effect of similar candle, uses and reduces the limitation that light-emittingdiode 2 is subject to because of nature (as: directive property).

Moreover the profile of described light shield 1 is roughly candlelight shape, use and make the light fixture 100 of this light shield 1 of tool not need additionally to arrange Decorative Cover, can reach the effect of visual appearance, and then save the production cost of light fixture 100 and assemble man-hour.

The foregoing is only better possible embodiments of the present utility model, it is not in order to limit to the scope of the claims of the present utility model, and all equalizations of doing according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.

Claims (13)

1. a light fixture, is characterized in that, comprising:

One light shield, the structure that it is formed in one, and this light shield includes an incidence surface and an exiting surface, this incidence surface definition has a central axis, in this light shield, be formed with a reflecting part, and this reflecting part is roughly symmetrical in this central axis around setting and has a relative first surface and a second surface; Wherein, this incidence surface sees through this reflecting part and defines an interior light incidence section and an outer light incidence section, this first surface of this reflecting part is away from this central axis and be formed with an external reflectance face, and this second surface of this reflecting part is close to this central axis and is formed with an interior reflective surface; And

One light-emittingdiode, it has a light-emitting area, and this light-emittingdiode is adjacent to the incidence surface of this light shield, and this light-emitting area is towards this incidence surface; In cross section at this light shield perpendicular to this central axis, be adjacent to this exiting surface cross section of this incidence surface and this external reflectance face cross section orthographic projection in the time of this light-emittingdiode, the profile of this light-emitting area is between the profile in this exiting surface cross section and the profile in this external reflectance face cross section;

Wherein, the light that this light-emittingdiode sends from its light-emitting area, wherein a part of light can inject through this interior light incidence section of this incidence surface this light shield and see through this interior reflective surface reflection and certainly the upper half of this exiting surface of this light shield pass, wherein another part light can be injected through this outer light incidence section of this incidence surface this light shield and see through the reflection of this external reflectance face and the upper half of this exiting surface of this light shield and bottom half pass certainly.

2. light fixture as claimed in claim 1, is characterized in that, this exiting surface is non-shiny surface, and this interior reflective surface and this external reflectance face are shiny surface.

3. light fixture as claimed in claim 2, is characterized in that, this incidence surface is plane, and this exiting surface is free form surface shape; This reflecting part is to be roughly arranged with formed groove columnar structure along the direction annular of parallel this central axis by this incidence surface, and in this reflecting part, be filled with a medium, the refractive index of this medium is lower than the refractive index of this light shield, or this reflecting part is the toroidal membrane columnar structure that is embedded in this light shield inside.

4. light fixture as claimed in claim 3, it is characterized in that, this light shield more includes a holding part, this light-emittingdiode is placed in this holding part, this incidence surface of this light shield roughly develops the light-emitting area in this light-emittingdiode, and this holding part inner edge roughly develops the end face position beyond the lateral margin of this light-emittingdiode and this light-emitting area.

5. light fixture as claimed in claim 3, is characterized in that, this light fixture more comprises a pedestal, it comprises a crown top of burner and a radiating seat, one end of this radiating seat is equiped with this crown top of burner, and this light-emittingdiode is installed in the other end of this radiating seat, and this light-emittingdiode is electrically connected at this crown top of burner.

6. light fixture as claimed in claim 3, is characterized in that, the centrad of this interior reflective surface and this external reflectance face center line is separately less than or equal to 80nm, and the centrad of the center line of this exiting surface is more than or equal to 10 μ m.

7. light fixture as claimed in claim 3, is characterized in that, this light shield is on the cross section perpendicular to this central axis, and the area that this interior reflective surface is surrounded is roughly 40% to 60% of minimum area that this exiting surface and this external reflectance face surround.

8. light fixture as claimed in claim 7, it is characterized in that, through the reflection of this interior reflective surface and pass the light of this light shield, its this exiting surface upper half penetrating is corresponding to the length of this central axis, is roughly this exiting surface corresponding to 40% to 60% of the length of this central axis.

9. the light shield of a light fixture, it is characterized in that, comprising: an incidence surface and an exiting surface, this incidence surface definition has a central axis, in this light shield, be formed with a reflecting part, and this reflecting part is roughly symmetrical in this central axis around setting and has a relative first surface and a second surface; Wherein, this first surface of this reflecting part is away from this central axis and be defined as an external reflectance face, and this second surface of this reflecting part is close to this central axis and is defined as an interior reflective surface.

10. the light shield of light fixture as claimed in claim 9, is characterized in that, this exiting surface is non-shiny surface, and this interior reflective surface and this external reflectance face are shiny surface.

The light shield of 11. light fixtures as claimed in claim 10, is characterized in that, this incidence surface is plane, and this exiting surface is free form surface shape; This reflecting part is to be roughly arranged with formed groove columnar structure along the direction annular of parallel this central axis by this incidence surface, and in this reflecting part, be filled with a medium, the refractive index of this medium is lower than the refractive index of this light shield, or this reflecting part is the toroidal membrane columnar structure that is embedded in this light shield inside.

The light shield of 12. light fixtures as claimed in claim 11, is characterized in that, this light shield is on the cross section perpendicular to this central axis, and the area that this interior reflective surface is surrounded is roughly 40% to 60% of minimum area that this exiting surface and this external reflectance face surround.

The light shield of 13. light fixtures as claimed in claim 12, is characterized in that, the centrad of this interior reflective surface and this external reflectance face center line is separately less than or equal to 80nm, and the centrad of the center line of this exiting surface is more than or equal to 10 μ m.

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