CN204494119U - Lighting device - Google Patents

Abstract

Embodiment of the present disclosure provides a kind of lighting device (10), it comprises the housing (200) of ambient light source (100), this housing (200) defines parabolic chamber (210) and neck chamber (220), wherein said neck chamber (220) comprises neck sidewall (221), and this neck sidewall (221) can printing opacity; And the 3rd end (222), the 3rd end (222) is connected with the second end (213) in this parabolic chamber (210).The heat dispersion of light source is significantly improved according to the lighting device of embodiment of the present disclosure, thus compared with the conventional illuminator that inner surface is all reflective, the lighting device of embodiment of the present disclosure allows to use more high-power light source in the housing of same size, and can maintain the colour rendering index of light source in the use of longer time.

Description

Lighting device

Technical field

Embodiment of the present disclosure relates to a kind of lighting device, more specifically, relates to a kind of parabolic type aluminium reflector (PAR) lighting device for output high-power.

Background technology

PAR lighting device usually has thinner neck and similar paraboloidal reflecting part thus according to different application, the light dispersed by light source is pooled specific light beam, any suitable light source can be adopted to throw light on, particularly wish to adopt the light source of high-color rendering thus can reduce the color of field of illumination as much as possible.

Colour rendering refers to when light source irradiation is on the object of same color, to the degree that this object color presents.Usually the colour rendering of light source is represented with colour rendering index.The colour rendering index of light source is higher, and its color developing better.Such as colour rendering index be 100 light source represent that the color that things shows under its light is consistent with under standard sources.

Although recently developed can adapt to PAR lighting device colour rendering index can be promoted to more than 90 reflection-type ceramic gold-halogen lamp (CDM-R), but, such CDM-R light source often power is very high, thus can produce more heats during operation.After working for a long time, due to high temperature, the part luminescent material of CDM-R light source can be dispersed in light source internal, and thus causes this light source to produce colour cast problem, reduces its colour rendering index, thus affects the performance and used life of light fixture.

Utility model content

In view of this, one of object of disclosure embodiment is to provide a kind of novel lighting device, it significantly improves the heat dispersion of light source, thus compared with the conventional illuminator (such as traditional PAR lamp) that inner surface is all reflective, lighting device of the present disclosure allows to use more high-power light source in identical housing, and can maintain the colour rendering index of light source in the use of longer time.

According to an aspect of the present disclosure, provide a kind of lighting device, it comprises the housing of ambient light source, and this housing defines parabolic chamber and neck chamber, and this neck chamber comprises can the neck sidewall of printing opacity and the 3rd end that is connected with the second end.Can the neck sidewall of printing opacity and the parabolic sidewall that is capable of reflecting light by limiting, the lighting device of embodiment of the present disclosure can be configured to the temperature reducing environment near light source and light source while not affecting its light output performance, thus increase the service life, or at longer time durations, colour rendering index is maintained higher level.

According to an embodiment of the present disclosure, neck sidewall can by lighttight liner ring around.Utilize around the lighttight sleeve of neck sidewall, make while improving radiating effect further, can stop that the light that sends from light source penetrates via the neck sidewall of printing opacity, thus prevent high lumen and high-power illumination from damaging eyes.

According to an embodiment of the present disclosure, parabolic chamber can comprise be capable of reflecting light parabolic sidewall, defining can the first end of opening of printing opacity and the second end less than first end.

According to an embodiment of the present disclosure, housing can be made up of glass, and on parabolic sidewall, be formed with the aluminium lamination be capable of reflecting light.Usual PAR lighting device scribbles or is coated with aluminium film at the inwall in parabolic chamber, thus serves as good reflection face or the minute surface of light.Although the profile in parabolic chamber or shape can design as required, thus the light beam with different shooting angle and shape is provided, but in general, the shape of parabolic chamber on the cross section coplanar with its longitudinal axis (this longitudinal axis overlaps substantially with outgoing beam direction) can be considered to the curve of parabola or near parabolic, thus makes the light sent by light source can be formed the given shape of such as light beam and so on.

According to an embodiment of the present disclosure, the surface of sleeve can below 1% to visible light reflectance.Be configured to substantially light tight also not the sleeve (dark colored surface of such as black and so on) of reverberation can prevent light source from damaging eyes, prevent the light sent by light source from being returned in neck chamber by the surface reflection of sleeve simultaneously.Although be difficult to there is absolute opaque surface in reality, the disclosure is intended to protection sleeve to visible light reflectance below 1%, i.e. the surface of not reverberation substantially.

According to an embodiment of the present disclosure, sleeve can be made of metal.Alternatively, housing can have the contact site forming conductive contact and be electrically coupled for light source, and neck chamber has the 4th end and is connected with contact site in the 4th end.Further alternatively, sleeve and contact site can be spaced apart by dead ring.Dead ring can be made up of heat resistant plastice.Usually, metal is used to form good radiator or heat sink, thus adopts metal manufacture sleeve can improve the radiating effect of illumination apparatus further.This sleeve integratedly or can also be formed in combination radiator structure or heat sink, to be conducive to further dispersing heat.

According to an embodiment of the present disclosure, sleeve also can be made up of heat-conducting plastic or pottery.As the substitute of metal, can adopt as the heat-conducting plastic of the good conductor of heat or pottery to manufacture sleeve, to reach same or similar heat radiation and the effect of shading light.Similarly, the dark colored surface that the sleeve manufactured with these materials can be formed such as black damages eyes to prevent illumination further.Further, this sleeve also integratedly or can be formed in combination radiator structure or heat sink, to be conducive to dispersing heat.

According to an embodiment of the present disclosure, light source can be ceramic gold-halogen lamp.

Owing to having the neck sidewall in the neck chamber of printing opacity, the light sent can not be reflected back in neck chamber again, thus reduce the heat radiation to light source, therefore effectively can reduce the temperature of light source from light source.In addition, due to neck chamber periphery or have light tight and as the sleeve of good conductor of heat, therefore, while increasing radiating effect further, the high-power light that can prevent light source from sending is to the eyes of intelligent around the arranged outside in neck chamber.Make lighting device that colour rendering index can be made during longer service time to maintain higher level according to the combination of these features of the present disclosure, thus the service life of this lighting device is extended.

Accompanying drawing explanation

Now by means of only the mode of example, with reference to appended accompanying drawing, embodiment of the present disclosure is described, wherein:

Fig. 1 shows the perspective view of the lighting device according to an embodiment of the present disclosure; And

Fig. 2 shows the sectional view of the lighting device in Fig. 1.

Detailed description of the invention

Now will be specifically described embodiment of the present disclosure by reference to the accompanying drawings.It should be noted that in accompanying drawing and may use same figure denote to similar parts or functional unit.Accompanying drawing is only intended to be described embodiment of the present disclosure but not be limited.Those skilled in the art can obtain alternative technical scheme from following description on the basis of not departing from disclosure spirit and protection domain.

Embodiment of the present disclosure is mainly exemplarily described with parabolic type aluminium reflector (PAR) lighting device being provided with reflection-type ceramic gold-halogen lamp (CDM-R).But, should be understood that, the disclosure is not limited to be applied to the PAR lighting device being provided with CDM-R, the disclosure is applicable to any reflection-type lighting device needing to possess good heat radiating ability, such as, the inwall in the parabolic chamber of this lighting device can adopt other material to form the reflecting layer of light, and this lighting device also can adopt other light source of such as LED illumination module and so on to replace the CDM-R in disclosure embodiment.Meanwhile, although following described in detail embodiment uses a CDM-R as light source, the disclosure is not intended to the quantity of light source to be restricted to unique.Those skilled in the art can make various modifications and changes to embodiment by this description of reading and accompanying drawing under instruction of the present disclosure, such as, in the neck chamber of cuboid, form multiple light source, or make liner ring around whole housing outer surface etc.Every lighting device limited with disclosure claims spirit and scope all should be considered to belong to lighting device of the present disclosure.Below in conjunction with accompanying drawing, each embodiment of the present disclosure is described.

Fig. 1 shows the perspective view of the lighting device 10 according to an embodiment of the present disclosure.Fig. 2 shows the sectional view of the lighting device in Fig. 1.Composition graphs 1 and Fig. 2 are described and will not illustrate separately each accompanying drawing by following description.

As shown in Figure 1, from outside viewing, lighting device 10 has housing 200 and sleeve 300 and dead ring 400 3 individual components.Shown in the sectional view of Fig. 2, lighting device 10 comprises the housing 200 of light source 100 and ambient light source 100.In one embodiment, light source 100 can be CDM-R type light source, and it can send the white light of high power, high lumen.In alternative embodiments, this light source 100 also can be the illuminating source of other type, such as LED or LED module.Housing 200 defines parabolic chamber 210 and neck chamber 220.Parabolic chamber 210 have be capable of reflecting light parabolic sidewall 211, defining can the first end 212 of opening of printing opacity and less than first end 212 and relative with first end 212 the second end 213.Neck chamber 220 has can the neck sidewall 221 of printing opacity and the 3rd end 222 that is connected with the second end 213.In addition, neck chamber 220 also has four end 223 relative with the 3rd end 222, and the 4th end 223 place with for being connected with the contact site 230 that light source 100 is electrically coupled.

In an embodiment of the present disclosure, housing 200 can be formed by integrated glass material, and thus the 3rd end 222 in the second end 213 and the neck chamber 220 in parabolic chamber 210 closely and be connected integratedly.At first end 212 place, the opening of printing opacity can be formed, this opening can as dismountable light-passing board (so that changing light source 100) as shown in Figure 2, also can be one-body molded with housing 200, can also not possess any parts in the exit direction of lighting device 10, namely light does not penetrate parabolic chamber 210 through any (than air) medium.The reflecting layer that can form aluminium lamination (aluminium coated) or the other types/material be capable of reflecting light on the parabolic sidewall 211 in parabolic chamber 210 is reflected for the light sent by light source 100 and forms the light beam of intended shape along the exit direction (i.e. light source 100 upwards emergent light in Fig. 2) that lighting device 10 is expected.The neck sidewall 221 in neck chamber 220 can be transparent or printing opacity, and like this, the light sent from light source 100 can not be returned by the sidewall reflects in neck chamber 220.In other words, can not be again reflected back neck chamber 220 from the neck sidewall 221 in most of light arrival neck chamber 220 that light source 100 sends, thus the energy of these light can not be radiated light source 100 again to make heat accumulation.

In an embodiment of the present disclosure, light source 100 is CDM-R type light source, and it has Vacuum Package and the luminescent material in this Vacuum Package.After working in high temperature environments for a long time, within this luminescent material partly can be dispersed in Vacuum Package because of sublimation, thus obviously affect the colour rendering of this light source.When colour rendering index drops to after below certain level, this light source is then unsuitable for continuing to use, and means that its life-span is used up.This CDM-R type light source can make it be centrally located in parabolic chamber 210 as shown in Figure 2.Therefore, the reflecting layer in the most of light meeting polished object chamber 210 sent by this light source reflected, and penetrates along the exit direction expected from the opening of the top of the lighting device 10 of Fig. 2.The profile of the parabolic sidewall 211 in the position of light source and layout and parabolic chamber 210 and shape can design by method, beam exit angle as required and the shape such as such as emulating.

In an embodiment of the present disclosure, contact site 230 forms the contact of thread-shaped and another contact at end.These two contacts are formed with two contacts of light source 100 respectively and are electrically coupled, for use external power source (such as civil power) for light source 100 is powered.Thus, contact site 230 can be conduction near the side of the 4th end 223 in neck chamber 220.

In an embodiment of the present disclosure, sleeve 300 can be made of metal, the good conductor of the heat of such as copper and so on.Sleeve 300 can cover the whole neck sidewall 221 in neck chamber 220 around neck chamber 220, and namely the part of the printing opacity in all neck chambeies 220 can cover by sleeve 300, thus prevents the light penetrated by light source 100 may to the eyes of intelligent.Alternatively, sleeve 300 can have the dark colored surface (inner surface and/or outer surface) of such as black and so on, thus farthest reduces reflection and the transmission of light.The inner surface of sleeve 300 and/or the optional surface as dark color of outer surface, such as, form the reflection that usually can reduce light to the surface of visible light reflectance below 1% significantly.In addition, adopting metal to form sleeve 300 also can make radiating effect better, to reduce the operating temperature of light source 100.Alternatively, sleeve 300 integratedly or can be formed in combination heat abstractor or heat sink structure (not shown), thus further improving radiating effect.When sleeve 300 is made of metal, in order to avoid its contact site 230 with conduction is formed and is electrically connected, between sleeve 300 and contact site 230, place dead ring 400.This dead ring 400 can be made up of heat resistant plastice and thus reduce the risk of electric shock.

In another embodiment of the present disclosure, sleeve 300 can also be made up of heat-conducting plastic or pottery, and these materials have good thermal conductivity, can as the substitute of metal sleeve.Simultaneously because its insulation characterisitic, make it possible to omit use dead ring 400.

Should be understood that, although neck chamber 220 is as shown in Figures 1 and 2 shown as generally cylindrical body and is circular at the opening at first end 212 place, but the disclosure is not limited the shape in housing 200, neck chamber 220 and parabolic chamber 210, size and layout.Although embodiment of the present disclosure shows use the situation of single source 100, but the disclosure is not also limited the quantity of light source 100, layout and type.In addition, as mentioned above, housing 200 can be integrated, means that parabolic chamber 210 and neck chamber 220 are limited respectively by the material of integrated such as glass.But the scope of the present disclosure comprises equally using different materials to form parabolic chamber 210 and neck chamber 220 respectively and fitting together and forms whole housing 200.Such as, use pottery to form parabolic chamber 210 and use glass to form neck chamber 220.

By the neck sidewall 221 of the printing opacity of the present embodiment and the sleeve 300 around its light tight also not reverberation substantially arranged, make the light towards neck sidewall 221 outgoing that sends from light source 100 also can not can not be reflected back toward neck chamber 220 through sleeve 300.This brings several benefit, such as, the heat dispersion of light source is significantly improved according to the lighting device of embodiment of the present disclosure, thus compared with the conventional P AR lighting device that inner surface is all reflective, the lighting device of embodiment of the present disclosure allows to use more high-power light source in the housing of same size, and can maintain the colour rendering index of light source in the use of longer time.Reduce the heat radiation to light source, therefore effectively can reduce the temperature of light source.In addition, due to neck chamber periphery or have light tight and as the sleeve of good conductor of heat, therefore, while increasing radiating effect further, the high-power light that can prevent light source from sending is to the eyes of intelligent around the arranged outside in neck chamber.Make lighting device colour rendering index can be maintained higher level during longer service time according to the combination of these features of the present disclosure, thus the service life of this lighting device is extended.

According to the test result only for reference of applicant, be all reflective PAR lamp of aluminizing compared with inner surface, the mean value of the temperature recorded near the position at its center outside light source according to the lighting device of embodiment of the present disclosure reduces 12 DEG C.

By describing above and instruction given in relevant drawings, of the present disclosure many modification given here and other embodiment will recognize by disclosure those skilled in the relevant art.Therefore, it being understood that embodiment of the present disclosure is not limited to disclosed detailed description of the invention, and modification and other embodiment are intended to comprise within the scope of the present disclosure.In addition, although more than to describe and relevant drawings is described example embodiment under the background of some example combination form of parts and/or function, but should be realized, can the various combination form of parts and/or function be provided by alternate embodiment and not deviate from the scope of the present disclosure.On this point, such as, be also expected with other combining form of the different parts clearly described above and/or function and be within the scope of the present disclosure.Although be employed herein concrete term, they only use with general and descriptive implication and and are not intended to limit.

Claims (10)

1. a lighting device (10), is characterized in that, comprising:

The housing (200) of ambient light source (100), described housing (200) defines parabolic chamber (210) and neck chamber (220),

Wherein said neck chamber (220) comprising:

Neck sidewall (221), described neck sidewall (221) can printing opacity; And

3rd end (222), described 3rd end (222) is connected with the second end (213) of described parabolic chamber (210).

2. lighting device according to claim 1 (10), is characterized in that, described neck sidewall (221) by lighttight sleeve (300) around.

3. lighting device according to claim 1 (10), is characterized in that, described parabolic chamber (210) also comprises:

Parabolic sidewall (211), described parabolic sidewall (211) is capable of reflecting light; And

First end (212), described first end (212) defines can the opening of printing opacity;

Wherein said the second end (213) is less than described first end (212).

4. lighting device according to claim 1 (10), is characterized in that, described housing (200) is made up of glass, and is formed with the aluminium lamination be capable of reflecting light on described parabolic sidewall (211).

5. lighting device according to claim 2 (10), is characterized in that, the surface of described sleeve (300) to visible light reflectance below 1%.

6. the lighting device (10) according to claim 2 or 5, is characterized in that, described sleeve (300) is made up of metal, heat-conducting plastic or pottery.

7. lighting device according to claim 6 (10), it is characterized in that, described housing (200) has the contact site (230) forming conductive contact, be electrically coupled for described light source (100), described neck chamber (220) has the 4th end (223) and is connected with described contact site (230) at described 4th end (223) place.

8. lighting device according to claim 7 (10), is characterized in that, described sleeve (300) is spaced apart by dead ring (400) with described contact site (230).

9. lighting device according to claim 8 (10), is characterized in that, described dead ring (400) is made up of heat resistant plastice.

10. lighting device according to claim 1 (10), is characterized in that, described light source (100) is ceramic gold-halogen lamp.