CN102954367B - Lighting device - Google Patents

Lighting device Download PDF

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Publication number
CN102954367B
CN102954367B CN201210222571.0A CN201210222571A CN102954367B CN 102954367 B CN102954367 B CN 102954367B CN 201210222571 A CN201210222571 A CN 201210222571A CN 102954367 B CN102954367 B CN 102954367B
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CN
China
Prior art keywords
mentioned
cover
appliance body
ligthing paraphernalia
led illuminating
Prior art date
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Active
Application number
CN201210222571.0A
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Chinese (zh)
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CN102954367A (en
Inventor
前田光
园田孝三
冈田敏纯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Publication of CN102954367A publication Critical patent/CN102954367A/en
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Abstract

A lighting device (10) comprises a device main body (11) which can be arranged on a ceiling, a ground side protrusion (12) arranged on the ground side of the device main body (11), a plurality of LED light-emitting parts (13) arranged on the ground side of the device main body (11) annularly, an installing part (14) accommodated at the ground side protrusion part (12) and used to install the device main body (11) on the ceiling, a power supply part accommodated at the ground side protrusion part (12) and supplying power to the LED light-emitting parts (13), and a cover (16) arranged on the device main body (11) and covering the LED light-emitting parts (13). Each of the LED light-emitting parts (13) possesses a lens (17) which is a wide-angle lens distributing light to the central part of the cover (16).

Description

Ligthing paraphernalia
Technical field
The present invention relates to the ligthing paraphernalia irradiating downward from the light of LED illuminating part.
Background technology
In the past, known have a following ligthing paraphernalia, and this ligthing paraphernalia possesses discoid appliance body, wall (for example, with reference to patent documentation 1) with the circular conical shaped shape that is disposed at multiple LED illuminating parts of appliance body and form at the central portion of appliance body.
Patent documentation 1 possesses and is installed on the lampshade of appliance body and is located at the outside of this lampshade and is used for this lampshade to be fixed on the cover body of appliance body.
Patent documentation 1: utility model No. 3165661 communique of registration (Fig. 1, paragraph 0017,0018)
In patent documentation 1, the heat being produced by LED illuminating part is discharged to outside and dispel the heat, the thin thickness in the outside of appliance body and have the surface structure of aesthetic feeling of generation, can easily carry out the replacing of LED illuminating part, and free from environmental pollution.
But in patent documentation 1, owing to being provided with the wall of conical shaped shape at the central portion of appliance body, so in the time observing lampshade from ground side, the central portion of lampshade seems darker, lampshade entirety produces uneven luminance.
Summary of the invention
The present invention makes in order to address the above problem, and its objective is a kind of ligthing paraphernalia that can prevent uneven luminance is provided.
Ligthing paraphernalia of the present invention possesses: appliance body; Installation portion, is used for above-mentioned appliance body to be installed to ceiling surface; Multiple LED illuminating parts, are located at the periphery of above-mentioned appliance body; Power supply unit, to above-mentioned each LED illuminating part power supply; And cover, be installed on above-mentioned appliance body, above-mentioned each LED illuminating part is covered; Above-mentioned each LED illuminating part has lens; Said lens is the wide-angle lens to the central portion of above-mentioned cover by light luminous intensity distribution.
In addition, preferably, for the distance between above-mentioned appliance body and above-mentioned cover, the above-mentioned periphery of above-mentioned appliance body is arranged on the nearer position of distance with respect to the central portion of above-mentioned appliance body.
In addition, preferably, this ligthing paraphernalia has cover, and this cover covers the above-mentioned cover side of the above-mentioned installation portion arranging at the above-mentioned central portion of above-mentioned appliance body.
According to ligthing paraphernalia of the present invention, play the effect that can prevent uneven luminance.
Brief description of the drawings
Fig. 1 is the exploded perspective view of the ligthing paraphernalia of the 1st embodiment of the present invention.
Fig. 2 is the vertical sectional view of the ligthing paraphernalia of the 1st embodiment of the present invention.
Fig. 3 is partly cut-away's vertical sectional view around of lens of the 1st embodiment of the present invention.
Fig. 4 is the vertical sectional view of the variation of the ligthing paraphernalia of the 1st embodiment of the present invention.
Fig. 5 is the vertical sectional view of other variation of the ligthing paraphernalia of the 1st embodiment of the present invention.
Fig. 6 is the exploded perspective view of the ligthing paraphernalia of the 2nd embodiment of the present invention.
Fig. 7 is the brightness distribution curve figure of the ligthing paraphernalia of the 1st embodiment.
Fig. 8 is the brightness distribution curve figure of the ligthing paraphernalia of the 2nd embodiment.
Fig. 9 is the brightness distribution curve figure of the ligthing paraphernalia that uses in comparative example.
Detailed description of the invention
Below, with reference to accompanying drawing, the ligthing paraphernalia of multiple embodiments of the present invention is described.In whole accompanying drawings, give identical reference marker and description thereof is omitted to same or similar part.
(the 1st embodiment)
As shown in Figure 1, the ligthing paraphernalia 10 of the 1st embodiment of the present invention possesses: the appliance body 11 that is installed on ceiling (with reference to Fig. 2) 90, the ground side protuberance 12 arranging in the ground side of appliance body 11, and the multiple LED illuminating parts 13 that arrange in the form of a ring in the ground side of appliance body 11.
Ligthing paraphernalia 10 possesses: be contained in ground side protuberance 12, be used for appliance body 11 to be installed on the installation portion 14 of ceiling 90 and the power supply unit (with reference to Fig. 2) 15 that is contained in ground side protuberance 12, powers to each LED illuminating part 13.
Ligthing paraphernalia 10 possesses mode so that each LED illuminating part 13 is covered and is installed on the cover 16 of appliance body 11.In addition,, in the ligthing paraphernalia 10 of embodiments of the present invention, for the distance between appliance body 11 and cover 16, the periphery of appliance body 11 arranges apart from nearer with respect to the central portion of appliance body 11.
In ligthing paraphernalia 10, each LED illuminating part 13 has lens 17.Lens 17 are the wide-angle lenses to the central portion luminous intensity distribution of cover 16 by light.Wide-angle lens described here, refers to by combining with the LED encapsulation as semiconductor light-emitting elements, can come to be compared to wider luminous intensity distribution angle, luminous intensity distribution angle that the characteristic of LED encapsulation has the lens of radiating light.
In ligthing paraphernalia 10, be provided with the hole portion 18 for operating installation portion 14 at the central portion of ground side protuberance 12, and possess the cover 19 that hole portion 18 is sealed.
In ligthing paraphernalia 10, at the sidepiece of hole portion 18, night-light 20 is installed, this night-light 20 is provided with the not shown photo detector that remote signal is subject to light.
Appliance body 11 adopts die casting (die cast) parts etc. of thin thickness to be formed as circular plate type.In the outer edge of the ground side of appliance body 11, the multiple covers holding sections 21 for stoping cover 16 to rotate are installed.
LED illuminating part 13 has the LED substrate 22 of circumference 4 being cut apart to such circular shape separating, in the ground side of LED substrate 22, by multiple LED 24 of multiple LED 23 of inner circumferential side and outer circumferential side along 22 sealing of LED substrate.
LED substrate 22 is arranged on the lower surface of ground side protuberance 12, has the not shown printed circuit being electrically connected with LED 23 and LED 24, and this printed circuit is electrically connected with power supply unit 15.
In addition, multiple LED 23 of inner circumferential side and multiple LED 24 of outer circumferential side can adopt the structure with characteristics such as different respectively colour temperatures.
Installation portion 14 is the adapters (adapter) that are connected and are electrically connected with the suspended ceiling that is arranged at ceiling 90 (with reference to Fig. 2) 91 mechanicalnesses, is electrically connected to power supply unit 15.
Power supply unit 15 is built-in with the electric components such as inverter (inverter), is used for the industrial-frequency alternating current rheology of powering from suspended ceiling 91 to be changed to dc source and to impose on the printed circuit of LED substrate 22.
Cover 16 is for example milky resin, is stoped rotation by the cover holding section 21 of appliance body 11.
Lens 17 are the resins with light transmission, and the below of multiple LED illuminating parts 13 is covered and be formed as toroidal.
Hole portion 18 is formed as elliptical shape, has compared with the outside dimension of installation portion 14 enough large internal diameter size.
The profile of cover 19 is elliptical shape, has the outside dimension larger than the internal diameter size of hole portion 18, is formed as with crust shape the shape that central portion is given prominence to slightly than outer edge.
Cover 19 is stoped rotation via not shown holding section by hole portion 18, thereby dismounting is installed on hole portion 18 freely.Therefore,, by cover 19 is pulled down, can operate in the installation portion 14 of the internal configurations of hole portion 18.
As shown in Figure 2, appliance body 11 has ceiling side protuberance 25 on the top of ground side protuberance 12, between this ceiling side protuberance 25 and ground side protuberance 12, disposes power supply unit 15.
Lens 17 have the incident section 26 of the inner circumferential side of the concave surface that the LED of the inner circumferential side of LED illuminating part 13 23 is covered, and in the outgoing portion 27 in the face of the outside of incident section 26 with the inner circumferential side of convex surface.
Lens 17 have the incident section 28 of the outer circumferential side of the concave surface that the LED of the outer circumferential side of LED illuminating part 13 24 is covered, and in the outgoing portion 29 in the face of the outside of incident section 28 with the outer circumferential side of convex surface.
And lens 17 have recess 30 between the outgoing portion 27 of inner circumferential side and the outgoing portion 29 of outer circumferential side.
Together with the LED 24 of such lens 17 and the LED 23 of inner circumferential side and outer circumferential side, form a part for LED illuminating part 13.
In lens 17, in incident section 26 and incident section 28 or outgoing portion 27 and outgoing portion 29 be formed with not shown convex-concave (シ ボ) shape portion, owing to being wide-angle lens, so that the light that the LED23 of inner circumferential side and the LED of outer circumferential side 24 send in the scope of angle [alpha] 1, spread and irradiate.
In the ligthing paraphernalia 10 of embodiments of the present invention, for the distance between appliance body 11 and cover 16, the periphery of appliance body 11 arranges apart from nearer with respect to the central portion of appliance body 11., the near distance between the top B of lens 17 and cover 16.But by the said lens 17 as wide-angle lens, a part for the light sending from each LED illuminating part 13 arrives the central portion of cover 16.Thereby the central portion of cover 16 is not dimmed, and uneven luminance does not occur.
As shown in Figure 3, the top B of lens 17 has than night-light 20 to the outstanding large outstanding size L2 of outstanding size L1 in the below of appliance body 11.
Therefore, night-light 20 does not hinder the irradiation of the light from LED illuminating part 13 that has seen through lens 17, so can there is not the shade being brought by night-light 20.
As shown in Figure 4, in the variation of ligthing paraphernalia 10, the top B of the lens 17 of LED illuminating part 13 is less from the outstanding size L4 of appliance body 11 than cover 19 from the outstanding size L3 of appliance body 11.
Thereby, be irradiated onto on cover 16 during when the light transmission lens 17 from LED illuminating part 13, be envisioned that the shade being brought by cover 19.But cover 19 is positioned at the central authorities of ligthing paraphernalia 10, multiple LED illuminating parts 13 keep enough and certain distance and configure around cover 19.In addition, the height of cover 19 is set to the height that does not hinder the luminous intensity distribution from LED module penetrating through lens 17.Thus, a part for the light penetrating from outgoing portion 27 and the outgoing portion 29 of lens 17 arrives the central portion of cover 16.Thereby the central portion of cover 16 is not dimmed, and uneven luminance does not occur.
As shown in Figure 5, in another variation of ligthing paraphernalia 10, appliance body 11 possesses ground side protuberance 31, and this ground side protuberance 31 has top B with respect to lens 17 from the equal outstanding size L6 of the outstanding size L5 of appliance body 11.
In this variation, LED substrate 22 is not arranged on the lower surface of ground side protuberance 31, and is mounted in the lower surface of the appliance body 11 of the outer circumferential side of ground side protuberance 31.
Therefore, the top B of lens 17 is equal from the outstanding size L6 of appliance body 11 from the outstanding size L5 of appliance body 11 and ground side protuberance 31.Thereby, be irradiated onto on cover 16 during when the light transmission lens 17 from LED illuminating part 13, there is not the shade being brought by appliance body 11.That is, the light penetrating by the outgoing portion 27 from lens 17 and outgoing portion 29, the central portion of cover 16 is not dimmed, and uneven luminance does not occur.
In the ligthing paraphernalia 10 of the 1st embodiment of the present invention described above, for the distance between appliance body 11 and cover 16, the periphery of appliance body 11 arranges apart from nearer with respect to the central portion of appliance body 11., the near distance between the top B of lens 17 and cover 16.Thereby, there is the surface structure that produces aesthetic feeling.
And, according to ligthing paraphernalia 10, because lens 17 are the wide-angle lenses to the central portion of cover 16 by light luminous intensity distribution, so the light sending from each LED illuminating part 13 arrives the central portion of cover 16.Thereby the central portion of cover 16 is not dimmed, and uneven luminance does not occur.
In addition, according to ligthing paraphernalia 10, because cover 19 seals hole portion 18, so be irradiated onto on cover 16 during when the light transmission lens 17 from LED illuminating part 13, there is not the shade being brought by hole portion 18.Thereby the central portion of cover 16 is not dimmed, and uneven luminance does not occur.
(the 2nd embodiment)
Then, the ligthing paraphernalia of the 2nd embodiment of the present invention is described.
In addition, in following embodiment, for the inscape repeating with above-mentioned the 1st embodiment or in function same inscape, by giving in the drawings identical label or corresponding label, simplification or omission will be describeds.
As shown in Figure 6, the ligthing paraphernalia 40 of the 2nd embodiment of the present invention adopts the cover 41 that is provided with multiple fins (fin) 42.
The fin 42 of cover 41 has the function that makes to be turned back to by cover reflection the light diffusion of appliance body 11 sides, and has the function that the heat that passes to cover 41 is dispelled the heat.
According to the ligthing paraphernalia 40 of the 2nd embodiment, make the light diffusion of irradiating towards hole portion 18 prevent the shade being brought by hole portion 18 by the fin 42 by cover 41, the central portion of cover 16 is not dimmed, and uneven luminance does not occur.
Then, to for confirming that the comparative example that action effect of the present invention carries out describes.
In comparative example, to using Luminance Distribution in the situation of cover 19 of ligthing paraphernalia 10 of the 1st embodiment, use the Luminance Distribution in the situation of cover 41 of the ligthing paraphernalia 40 of the 2nd embodiment and do not use the Luminance Distribution of the ligthing paraphernalia of cover to compare.
In addition, in the curve map shown in Fig. 7 to Fig. 9, the longitudinal axis represents brightness, and transverse axis represents the central portion of ligthing paraphernalia, the Luminance Distribution of periphery.
As shown in Figure 7, at the central portion of the ligthing paraphernalia 10 of the 1st embodiment, arrive from direct light and the reverberation of LED illuminating part 13, present compared with the periphery of ligthing paraphernalia 10 and change little high luminance values.; due to by a part for the light from LED illuminating part 13 by the direct light that covers light that 16 reflections arrive cover 19 and then tegmentum parts 19 and reflect the reverberation of the central portion that arrives cover 16 and directly arrive the central portion of cover 16 from the light scioptics 17 of LED illuminating part 13; the brightness of the central portion of ligthing paraphernalia 10 can obtain changing little high luminance values, the ligthing paraphernalia of the uneven luminance that can be reduced compared with the periphery of ligthing paraphernalia 10.
As shown in Figure 8, at the central portion of the ligthing paraphernalia 40 of the 2nd embodiment, arrive from direct light and the reverberation of LED illuminating part 13, present compared with the periphery of ligthing paraphernalia 10 and change little high luminance values.; same with above-mentioned the 1st embodiment; owing to a part for the light from LED illuminating part 13 being reflected to the reverberation of the central portion that arrives cover 16 by the fin 42 that covers light that 16 reflections arrive cover 41 and then tegmentum parts 41 and directly arriving the direct light of the central portion of cover 16 from the light scioptics 17 of LED illuminating part 13; the brightness of the central portion of ligthing paraphernalia 10 can obtain changing little high luminance values, the ligthing paraphernalia of the uneven luminance that can be reduced compared with the periphery of ligthing paraphernalia 40.
In contrast, as shown in Figure 9, do not using the periphery of ligthing paraphernalia of cover, although as Fig. 7 or present as shown in Figure 8 high luminance values, present low brightness values at the central portion of ligthing paraphernalia, shade is occurring.
From comparative example, the ligthing paraphernalia 10 of cover 19 is installed and the central portion of the ligthing paraphernalia 40 of cover 41 is installed in hole portion 18 in hole portion 18, with there is no the situation of mounting cover parts in hole portion 18 compared with, can obtain exceeding a lot of brightness values.
In addition, in ligthing paraphernalia of the present invention, LED illuminating part, installation portion, power supply unit, cover etc. are not limited to the respective embodiments described above, can carry out suitable distortion and improvement.
Above, the preferred embodiment of the present invention has been described, but the present invention is not limited to these specific embodiments, not departing from the category of claims, can carry out diversified change and distortion, these changes and distortion also belong in category of the present invention.

Claims (2)

1. a ligthing paraphernalia, is characterized in that,
Possess:
Appliance body;
Installation portion, is located at the central portion of above-mentioned appliance body, is used for above-mentioned appliance body to be installed to ceiling surface;
Multiple LED illuminating parts, are located at the periphery of above-mentioned appliance body;
Power supply unit, to above-mentioned each LED illuminating part power supply;
Cover, is installed on above-mentioned appliance body, so that above-mentioned each LED illuminating part is covered; And
Cover, covers the above-mentioned cover side of above-mentioned installation portion,
Above-mentioned each LED illuminating part has lens;
Said lens is the wide-angle lens that makes directly to arrive from the part in the light of above-mentioned each LED illuminating part the central portion of above-mentioned cover,
Above-mentioned cover makes to reflect from the light that arrives above-mentioned cover from above-mentioned cover reflection in the above-mentioned light of above-mentioned each LED illuminating part, and arrives the above-mentioned central portion of above-mentioned cover.
2. ligthing paraphernalia as claimed in claim 1, is characterized in that,
For the distance between above-mentioned appliance body and above-mentioned cover, the above-mentioned periphery of above-mentioned appliance body is arranged on the nearer position of distance with respect to the central portion of above-mentioned appliance body.
CN201210222571.0A 2011-08-24 2012-06-28 Lighting device Active CN102954367B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP182671/2011 2011-08-24
JP2011182671A JP5919505B2 (en) 2011-08-24 2011-08-24 lighting equipment

Publications (2)

Publication Number Publication Date
CN102954367A CN102954367A (en) 2013-03-06
CN102954367B true CN102954367B (en) 2014-12-03

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CN102954367A (en) 2013-03-06
JP2013045630A (en) 2013-03-04

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