CN202580710U - Lighting device and lamp with same - Google Patents

Abstract

The utility model relates to a lighting device (10) which comprises a lamp casing (1), a light-emitting assembly (2) and a radiator (3). A space for accommodating the light-emitting assembly (2) is defined by the lamp casing (1) and the radiator (3), and the radiator (3) is provided with a concave portion (6) where the light-emitting assembly (2) is installed. The lighting device is characterized by further comprising a first reflector (4) and a second reflector (5) which are arranged in the space, wherein the first reflector (4) can reflect light of the light-emitting assembly (2) to the second reflector (5), and the second reflector (5) can reflect light from the first reflector (4) to articles to be lighted. The lighting device is simple in structure, good in radiation performance and capable of achieving efficient and even lighting effects. In addition, the utility model further relates to a lamp with the lighting device.

Description

Lighting device and the light fixture that comprises this lighting device

Technical field

The utility model relates to a kind of lighting device and a kind of light fixture that comprises this lighting device.

Background technology

Now, lighting device is widely used in industrial circle and the daily life.Wherein conventional incandescent lamp is called as A type lamp, and the lighting device with candle profile is called as the Type B lamp.Along with the development of LED technology, led light source has become the main stream light sources in the Type B lamp field.

In the prior art, can the Type B lamp that with LED is light source be designed to have the lighting device of remote fluorescence lamp housing, the shortcoming that wherein exists is: cost is too high, and lamp housing color jaundice when off working state.The led array (being similar to omnidirectional light) of 3D structure also can medially be set in lighting device inside, but this structure is installed and need aspect heat radiation, be designed especially complicated.The Type B lamp can also have common cylindrical shape waveguiding structure or diffuse scattering lamp housing in addition, and this lamp housing causes light intensity distributions unsatisfactory.

The utility model content

For addressing the above problem, the utility model proposes a kind of lighting device, and this illuminator structure is simple, and heat dispersion is good, and can realize efficient illuminating effect uniformly.

A kind of lighting device is proposed according to the present invention; Comprise lamp housing, luminescence component and radiator, wherein lamp housing and radiator limit the space that holds luminescence component, and radiator has the depressed part that is used to install luminescence component; It is characterized in that; Lighting device also comprises first reflector and second reflector that is arranged in the space, and the light of first reflector self-luminous in the future assembly reflexes to said second reflector, and second reflector will reflex to from the first reflector light and treat illuminated objects.Through first and second reflectors are set in lighting device; Can adjust the emitting light path of luminescence component; Thus can be on the one hand with the optical efficiency of lighting device maintain higher level, for example greater than 80%; Obtain uniform radiation response on the other hand, also we can say to obtain desirable light distribution patterns.

According to a preferred design of the utility model, first reflector is arranged on the inwall of depressed part.Preferably, second reflector is arranged on the inner top surface of lamp housing.First reflector is arranged on the inwall of depressed part of radiator, can under the situation of lighting device internal structure limited space, makes full use of the locations of structures on the radiator so on the one hand.Can utilize first reflector to carry out fully effectively reflection on the other hand, so that light path is adjusted and reduced unnecessary light loss to being installed in the light that luminescence component sent in the depressed part.In addition, receive reverberation, second reflector is arranged on the inner top surface of common and the lamp housing that radiator is oppositely arranged from first reflector in order to make second reflector.

According to a preferred design of the utility model, luminescence component, first reflector and second reflector have common central axis.Through with light source, be that the central axis of luminescence component and first, second reflector is arranged on the same straight line, can reduce light loss, manufacturing and build-up tolerance, and can realize on the circumferential direction illuminating effect uniformly.

According to a preferred design of the utility model, first reflector is designed to the rotation symmetry and on its cross section, has parabolic outlines.Preferably, luminescence component is installed on the parabolic focus.Can know according to geometric knowledge, be installed in the emergent ray of the luminescence component on the parabola focal position can full illumination on first reflector, and make these light be parallel to parabolical symmetry axis to extend.Can reduce unnecessary light loss consumption thus, guarantee the high efficiency of lighting device.

According to a preferred design of the utility model, first reflector is the reflectance coating that is coated on the inwall of depressed part.This reflectance coating can contain materials such as silver, indium.According to an interchangeable design, first reflector is the inwall through polishing of depressed part.Because radiator is processed by metal, for example aluminium usually, the processing of therefore can polishing the inwall of depressed part or polish.

According to a preferred design of the utility model, second reflector is designed to the rotation symmetry, and on its cross section, has swallow-wing shape profile.In order to receive reverberation, and it is reflected the perisporium to lamp housing equably, therefore especially second reflector is designed to the reflecting curved surface that its cross section is a swallow-wing shape profile from first reflector.Preferably, second reflector is designed to rotate symmetry and on its cross section, has the curved profile that is limited following formula:

$p\left(t\right)=\frac{{(1-t)}^2{\mathrm{\&omega;}}_0{v}_0+2t(1-t){\mathrm{\&omega;}}_1{v}_1+{\mathrm{<figure-callout\; id="2"\; label="t"\; filenames="HDA0000142500450000011.png,HDA0000142500450000021.png"\; state="\{\{state\}\}">t</figure-callout>}}^2{\mathrm{\&omega;}}_2{v}_2}{{(1-t)}^2{\mathrm{\&omega;}}_0+2t(1-t){\mathrm{\&omega;}}_1+{\mathrm{<figure-callout\; id="2"\; label="t"\; filenames="HDA0000142500450000011.png,HDA0000142500450000021.png"\; state="\{\{state\}\}">t</figure-callout>}}^2{\mathrm{\&omega;}}_2},0\&le;t\&le;1,$

Wherein, in the reasonable Bezier of this secondary, control vertex v ₀, v ₁, v ₂And weight factor ω ₀, ω ₁, ω ₂Be predetermined value.Can adjust above-mentioned predetermined value according to actual conditions, so that obtain the illuminating effect of expectation.

According to a preferred design of the utility model, second reflector is the reflecting layer that is coated on the inner top surface of lamp housing.Usually process by nonmetallic materials such as plastics, glass based on lamp housing, can be advantageously second reflector be coated on the inner top surface of lamp housing with the form in reflecting layer.The second reflector manufacturing that realizes thus is simple, with low cost.

According to a preferred design of the utility model, lamp housing is designed to diffuser.Can obtain visually comfortable illuminating effect thus.

According to a preferred design of the utility model, lamp housing is designed to candle.That is to say, can lighting device according to the present invention be designed to candle lamp.

According to a preferred design of the utility model, the circumferential side wall of radiator is provided with many cooling fins.This structure helps increasing the area of dissipation of lighting device, prolongs the service life of lighting device.

In addition, also propose a kind of light fixture according to the present invention, this light fixture comprises above-mentioned lighting device, and wherein the luminescence component of lighting device comprises circuit board and is arranged on the led chip on the circuit board.Based on the characteristic of LED efficient energy-saving, can this light fixture that is also referred to as the remodeling lamp be widely used in the various illuminations place.

Description of drawings

Accompanying drawing constitutes the part of this specification, is used to help further understand the utility model.These accompanying drawing diagrams the embodiment of the utility model, and be used for explaining the principle of the utility model with specification.Identical in the accompanying drawings parts are represented with identical label.Shown in the figure:

Fig. 1 is the perspective, cut-away view according to the lighting device of the utility model;

Fig. 2 is the three-dimensional exploded view of the lighting device among Fig. 1.

The specific embodiment

Fig. 1 shows the perspective, cut-away view according to the lighting device of the utility model.In the present embodiment, this lighting device 10 is designed to candle lamp.Can certainly consider this lighting device 10 is designed to have the exterior contour that other are fit to according to the utility model.Lighting device 10 comprises lamp housing 1, luminescence component 2 and radiator 3.Lamp housing 1 and radiator 3 can utilize the frame for movement at self edge to make up, and to constitute the space of sealing, are used to hold luminescence component 2.In a kind of remodeling lamp category of the light fixture according to the utility model, light fixture comprises the lighting device 10 shown in Fig. 1, and its luminescence component 2 for example comprises circuit board and is installed in the led chip (not shown) on the circuit board.If not high, also can consider to replace led chip with the luminescent device of routine to the energy consumption class requirement.

As shown in Figure 1, the radiator 3 that is similar to cup-shaped has depressed part 6, and luminescence component 2 is arranged in this depressed part 6.Depressed part 6 also has the structure of similar cup-shaped, and its cross section can preferably have parabolic outlines (seeing that in vertical direction focus with top, comprises focus), and luminescence component 2 is installed on the flat bottom surface of depressed part 6.In order to realize efficient illuminating effect uniformly, in the space of lamp housing 1 and radiator 3 formation sealings, first reflector 4 and second reflector 5 are set especially.In the special preferred embodiment according to Fig. 1, the central axis of luminescence component 2, first and second reflectors 4,5 overlaps each other, and further with the central axes of lighting device 10.This design is convenient to make, and can reduce and make and location tolerance.

First reflector 4 is arranged on the inwall of depressed part 6, can rationally utilize the structure space of depressed part 6 so on the one hand, avoids taking the space in the lamp housing 1; The light that can guarantee on the other hand to send by luminescence component 2 as much as possible directive first reflector 4, under optimal situation whole directive first reflectors 4, reduce unnecessary light loss consumption thus.First reflector 4 is designed to the rotationally symmetric body that cross section has parabolic outlines corresponding to depressed part 6.For the optical efficiency that makes luminescence component 2 can be higher than 80%; Preferably luminescence component 2 is fixed on the focal position of this parabolic outlines (only schematically illustrated among the figure); Can make light that luminescence component 2 sends thus after 4 reflections of first reflector, be parallel to central axis directive second reflector 5 of lighting device 10.

Second reflector 5 and first reflector 4 are relatively, relatively be arranged on the inner top surface of lamp housing 1 on the vertical direction that particularly illustrates in the drawings.Lamp housing 1 comprise in vertical direction away from the top 8 of radiator 3 and from the top 8 perisporiums 9 that extend towards radiator 3.Second reflector 5 is arranged on the inwall at top 8, is on the inner top surface of lamp housing 1, and the light from first reflector 4 is reflected, and makes these light pass perisporium 9 and penetrates.In order to receive and reflect light fully from first reflector 4, make it pass lamp housing 1 and penetrate equably, also second reflector 5 is designed to the rotation symmetry, and on cross section, has swallow-wing shape profile." swallow-wing shape profile " is meant at this; Second reflector 5 begins from 8 the part in abutting connection with the top of the perisporium 9 of lamp housing 1, at first on the direction away from radiator 3, arches upward slightly, subsequently oppositely; Promptly; On the direction of radiator 3, extend with camber line shape gradually, and converge to the central symmetry axes of lamp housing 1.In this specific embodiment, this central symmetry axes is set to the optical axis coincidence with luminescence component 2.Lighting device 10 is being designed under the complete rotational symmetric situation central axes of optical axis and lighting device 10.

Under most preferred situation, swallow-wing shape profile can limit through the reasonable Bezier of secondary:

$p\left(t\right)=\frac{{(1-t)}^2{\mathrm{\&omega;}}_0{v}_0+2t(1-t){\mathrm{\&omega;}}_1{v}_1+{\mathrm{<figure-callout\; id="2"\; label="t"\; filenames="HDA0000142500450000011.png,HDA0000142500450000021.png"\; state="\{\{state\}\}">t</figure-callout>}}^2{\mathrm{\&omega;}}_2{v}_2}{{(1-t)}^2{\mathrm{\&omega;}}_0+2t(1-t){\mathrm{\&omega;}}_1+{\mathrm{<figure-callout\; id="2"\; label="t"\; filenames="HDA0000142500450000011.png,HDA0000142500450000021.png"\; state="\{\{state\}\}">t</figure-callout>}}^2{\mathrm{\&omega;}}_2},0\&le;t\&le;1,$

Control vertex v wherein ₀, v ₁, v ₂And weight factor ω ₀, ω ₁, ω ₂Be predetermined value.According to different application environments, can regulate above-mentioned predetermined value, pass the shooting angle of the light that lamp housing 1 penetrates with change, to obtain desirable light distribution patterns.

In order to improve reflecting effect, can the reflective coating that for example contains materials such as silver, indium be coated on the inwall of depressed part 6, to form first reflector 4.Common radiator 3 is made of metal, for example aluminium, and in the case, the processing of can directly the inwall to depressed part 6 being polished and/or polish is so that directly process first reflector 4 with this inwall.Simplified manufacture process so greatly.And lamp housing 1 is processed by similar materials such as PMMA or glass usually; Therefore can to form second reflector 5, guarantee first and second reflectors 4 thus with on the inner top surface of lamp housing 1, applying the reflecting layer equally; 5 reflectivity, and and then guarantee the optical efficiency of lighting device 10.When lamp housing 1 is processed by PMMA, can reach 85% optical efficiency; When lamp housing 1 was designed to diffuser, the light distribution pattern was slick and sly, visually comparatively comfortable more for the lamp housing 1 that PMMA processes, and can reach 80% optical efficiency this moment.

In addition, in order to ensure the heat dissipation characteristics of lighting device 10 according to the present invention and prolong it and use the life-span, many cooling fins 7 can be set on the circumferential side wall of radiator 3,, can carry out heat exchange with external environment fully thus to increase area of dissipation.

Fig. 2 shows the three-dimensional exploded view of the lighting device 10 among Fig. 1.First and second reflectors 4 according to lighting device 10 of the present invention; 5 can install respectively or be integrated in radiator 3 and the lamp housing 1; Therefore guaranteeing first reflector 4, be installed in luminescence component 2 and radiator 3 fixed-site each other in the depressed part 6; And second reflector 5 and lamp housing 1 during fixed-site, can fit together lamp housing 1 and radiator 3 each other simply exactly.

More than be merely the preferred embodiment of the utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various changes and variation.Any modification of being done within all spirit and principles at the utility model, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Reference number

1 lamp housing

2 luminescence components

3 radiators

4 first reflectors

5 second reflectors

6 depressed parts

7 cooling fins

8 tops

9 perisporiums

10 lighting devices

Claims (15)

1. a lighting device (10); Comprise lamp housing (1), luminescence component (2) and radiator (3); Wherein said lamp housing (1) and said radiator (3) limit the space that holds said luminescence component (2); Said radiator (3) has the depressed part (6) that is used to install said luminescence component (2), it is characterized in that, said lighting device (10) also comprises first reflector (4) and second reflector (5) that is arranged in the said space; First reflector (4) will reflex to said second reflector (5) from the light of said luminescence component (2), and said second reflector (5) will reflex to from said first reflector (4) light and treat illuminated objects.

2. lighting device according to claim 1 (10) is characterized in that, said first reflector (4) is arranged on the inwall of said depressed part (6).

3. lighting device according to claim 1 and 2 (10) is characterized in that, said second reflector (5) is arranged on the inner top surface of said lamp housing (1).

4. lighting device according to claim 1 (10) is characterized in that, said luminescence component (2), said first reflector (4) and second reflector (5) have common central axis.

5. lighting device according to claim 2 (10) is characterized in that, said first reflector (4) is designed to the rotation symmetry and on its cross section, has parabolic outlines.

6. lighting device according to claim 5 (10) is characterized in that, said luminescence component (2) is installed on the said parabolic focus.

7. lighting device according to claim 6 (10) is characterized in that, said first reflector (4) is the reflectance coating that is coated on the inwall of said depressed part (6).

8. lighting device according to claim 6 (10) is characterized in that, said first reflector (4) is the inwall through polishing of said depressed part (6).

9. lighting device according to claim 3 (10) is characterized in that, said second reflector (5) is designed to the rotation symmetry, and on its cross section, has swallow-wing shape profile.

10. lighting device according to claim 9 (10) is characterized in that, said second reflector (5) is designed to rotate symmetry and on its cross section, has the curved profile that is limited following formula:

$p\left(t\right)=\frac{{(1-t)}^2{\mathrm{\&omega;}}_0{v}_0+2t(1-t){\mathrm{\&omega;}}_1{v}_1+t^2{\mathrm{\&omega;}}_2{v}_2}{{(1-t)}^2{\mathrm{\&omega;}}_0+2t(1-t){\mathrm{\&omega;}}_1+t^2{\mathrm{\&omega;}}_2},0\&le;t\&le;1,$

Control vertex v wherein ₀, v ₁, v ₂And weight factor ω ₀, ω ₁, ω ₂Be predetermined value.

11. lighting device according to claim 3 (10) is characterized in that, said second reflector (5) is the reflecting layer that is coated on the inner top surface of said lamp housing (1).

12. lighting device according to claim 1 (10) is characterized in that, said lamp housing (1) is designed to diffuser.

13. lighting device according to claim 1 (10) is characterized in that, said lamp housing (1) is designed to candle.

14. lighting device according to claim 1 (10) is characterized in that, the circumferential side wall of said radiator (3) is provided with many cooling fins (7).

15. a light fixture is characterized in that, comprises according to each described lighting device (10) among the claim 1-14, the luminescence component (2) of wherein said lighting device (10) comprises circuit board and is arranged on the led chip on the said circuit board.

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