CN102954367A - Lighting device - Google Patents

Lighting device Download PDF

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Publication number
CN102954367A
CN102954367A CN2012102225710A CN201210222571A CN102954367A CN 102954367 A CN102954367 A CN 102954367A CN 2012102225710 A CN2012102225710 A CN 2012102225710A CN 201210222571 A CN201210222571 A CN 201210222571A CN 102954367 A CN102954367 A CN 102954367A
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CN
China
Prior art keywords
cover
mentioned
appliance body
ligthing paraphernalia
lens
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CN2012102225710A
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Chinese (zh)
Other versions
CN102954367B (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.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of CN102954367A publication Critical patent/CN102954367A/en
Application granted granted Critical
Publication of CN102954367B publication Critical patent/CN102954367B/en
Active legal-status Critical Current
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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 will be from the light of the LED illuminating part ligthing paraphernalia towards the below irradiation.
Background technology
In the past, known have a following ligthing paraphernalia, the wall (for example with reference to patent documentation 1) of the conical shaped shape that this ligthing paraphernalia possesses discoid appliance body, form with the circular a plurality of LED illuminating parts that are disposed at appliance body and at the central portion of appliance body.
Patent documentation 1 possesses the lampshade that is installed on appliance body and is located at the outside of this lampshade and is used for this lampshade is fixed in the cover body of appliance body.
Patent documentation 1: utility model is registered No. 3165661 communique (Fig. 1, paragraph 0017,0018)
In patent documentation 1, will be discharged to the outside by the heat that the LED illuminating part produces and dispel the heat, the thin thickness in the outside of appliance body and have the surface structure that produces aesthetic feeling can carry out the replacing of LED illuminating part easily, and free from environmental pollution.
Yet, in patent documentation 1, owing to the wall that is provided with the conical shaped shape at the central portion of appliance body, so when observing lampshade from ground side, the central portion of lampshade seems darker, the whole uneven luminance that produces of lampshade.
Summary of the invention
The present invention makes in order to address the above problem, and its objective is provides a kind of ligthing paraphernalia that can prevent uneven luminance.
Ligthing paraphernalia of the present invention possesses: appliance body; Installation portion is used for above-mentioned appliance body is installed to ceiling surface; A plurality of LED illuminating parts are located at the periphery of above-mentioned appliance body; Power supply unit is 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 with the wide-angle lens of light luminous intensity distribution to the central portion of above-mentioned cover.
In addition, preferably, for the distance between above-mentioned appliance body and the 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 the above-mentioned cover side of the above-mentioned installation portion that this cover will arrange at the above-mentioned central portion of above-mentioned appliance body covers.
According to ligthing paraphernalia of the present invention, play the effect that can prevent uneven luminance.
Description of 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 lens partly cut-away's vertical sectional view on every side of the 1st embodiment of the present invention.
Fig. 4 is the vertical sectional view of 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.
The specific embodiment
Below, describe with reference to the ligthing paraphernalia of accompanying drawing to a plurality of embodiments of the present invention.In whole accompanying drawings, give identical reference marker and description thereof is omitted to identical 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 that arranges in the ground side of appliance body 11, and a plurality of 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 is installed on the installation portion 14 of ceiling 90, and be contained in ground side protuberance 12, to the power supply unit (with reference to Fig. 2) 15 of each LED illuminating part 13 power supply.
Ligthing paraphernalia 10 possesses the cover 16 that is installed on appliance body 11 in the mode that each LED illuminating part 13 is covered.In addition, in the ligthing paraphernalia 10 of embodiments of the present invention, for appliance body 11 with cover for the distance between 16, the periphery of appliance body 11 arranges to such an extent that distance is 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 with the wide-angle lens of light to the central portion luminous intensity distribution of cover 16.Wide-angle lens described here refers to come by wider luminous intensity distribution angle, the luminous intensity distribution angle of making up, can have with the characteristic that is compared to the LED encapsulation with the encapsulation as the LED of semiconductor light-emitting elements the lens of radiating light.
In the ligthing paraphernalia 10, be provided with to operate the hole section 18 of installation portion 14 at the central portion of ground side protuberance 12, and possess the cover 19 with 18 sealings of hole section.
In the ligthing paraphernalia 10, at the sidepiece of hole section 18 night-light 20 is installed, this night-light 20 is provided with the not shown photo detector that remote signal is subjected to light.
Appliance body 11 adopts die casting (die cast) parts etc. of thin thickness to form circular plate type.In the outer edge of the ground side of appliance body 11, a plurality of covers holding sections 21 that stop cover 16 to rotate are installed.
LED illuminating part 13 has the LED substrate 22 of circumference 4 being cut apart such circular shape that separates, in the ground side of LED substrate 22, with a plurality of LED 24 of a plurality of LED 23 of interior all sides and outer circumferential side along 22 sealing of LED substrate.
LED substrate 22 is installed in the lower surface of ground side protuberance 12, has the not shown printed circuit that is electrically connected with LED 23 and LED 24, and this printed circuit is electrically connected with power supply unit 15.
In addition, a plurality of LED 24 of a plurality of LED 23 of interior all sides and outer circumferential side can adopt the structure with different respectively characteristics such as colour temperature.
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 from suspended ceiling 91 power supplies is changed to the printed circuit that dc source imposes on LED substrate 22.
Cover 16 for example is milky resin, is stoped by the cover holding section 21 of appliance body 11 and rotates.
Lens 17 are the resins with light transmission, and the below of a plurality of LED illuminating parts 13 is covered and form toroidal.
Hole section 18 forms elliptical shape, has with the outside dimension of installation portion 14 to compare 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 section 18, forms the central portion shape more outstanding slightly than the outer edge with the crust shape.
Cover 19 is stoped rotation via not shown holding section by hole section 18, thereby dismounting is installed on hole section 18 freely.Therefore, by cover 19 is pulled down, can operate in the installation portion 14 of the internal configurations of hole section 18.
As shown in Figure 2, appliance body 11 has ceiling side protuberance 25 on the top of ground side protuberance 12, disposes power supply unit 15 between this ceiling side protuberance 25 and ground side protuberance 12.
Lens 17 have the incident section 26 with interior all sides of the concave surface of LED 23 coverings of interior all sides of LED illuminating part 13, and the outgoing section 27 that has interior all sides of convex surface in the outside in the face of incident section 26.
Lens 17 have the incident section 28 with the outer circumferential side of the concave surface of LED 24 coverings of the outer circumferential side of LED illuminating part 13, and have the outgoing section 29 of the outer circumferential side of convex surface in the outside in the face of incident section 28.
And lens 17 have recess 30 between the outgoing section 29 of the outgoing section 27 of interior all sides and outer circumferential side.
Such lens 17 consist of the part of LED illuminating part 13 with the LED 24 of the LED 23 of interior all sides and outer circumferential side.
In the lens 17, in the incident section 26 and incident section 28 or outgoing section 27 and outgoing section 29 be formed with not shown convex-concave (シ ボ) shape section, owing to be wide-angle lens, so that the light that the LED 24 of the LED23 of interior all sides and outer circumferential side sends in the scope of angle [alpha] 1, spread and shine.
In the ligthing paraphernalia 10 of embodiments of the present invention, for appliance body 11 with cover for the distance between 16, the periphery of appliance body 11 arranges to such an extent that distance is nearer with respect to the central portion of appliance body 11.That is, the near distance between the top B of lens 17 and the cover 16.But by the said lens 17 as wide-angle lens, the part of the light that sends 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 from the light of LED illuminating part 13 that has seen through lens 17, so the shade that brought by night-light 20 can not occur.
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 little from the size L4 that appliance body 11 outstanding size L3 give prominence to from appliance body 11 than cover 19.
Thereby, when being irradiated onto on the cover 16 from the light transmission lens 17 of LED illuminating part 13, be envisioned that the shade that is brought by cover 19.But cover 19 is positioned at the central authorities of ligthing paraphernalia 10, and a plurality of LED illuminating parts 13 keep enough and certain distance and dispose around cover 19.In addition, the height of cover 19 is set to and does not hinder through lens 17 height from the luminous intensity distribution of LED module that penetrates.The part of the light that penetrates from the outgoing section 27 of lens 17 and outgoing section 29 thus, 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 with respect to the top B of lens 17 from the outstanding equal outstanding size L6 of size L5 of appliance body 11.
In this variation, LED substrate 22 is not installed in the lower surface of ground side protuberance 31, and is mounted in the lower surface of appliance body 11 of the outer circumferential side of ground side protuberance 31.
Therefore, the size L6 that gives prominence to from the outstanding size L5 of appliance body 11 and ground side protuberance 31 from appliance body 11 of the top B of lens 17 is equal.Thereby, when being irradiated onto on the cover 16 from the light transmission lens 17 of LED illuminating part 13, the shade that is brought by appliance body 11 does not occur.That is, by the light that outgoing section 27 and outgoing section 29 from lens 17 penetrate, 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 appliance body 11 with cover for the distance between 16, the periphery of appliance body 11 arranges to such an extent that distance is nearer with respect to the central portion of appliance body 11.That is, the near distance between the top B of lens 17 and the cover 16.Thereby, have the surface structure that produces aesthetic feeling.
And, according to ligthing paraphernalia 10, because lens 17 are with the wide-angle lens of light luminous intensity distribution to cover 16 central portion, so the light that sends 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 is hole section 18 sealing, so when being irradiated onto from the light transmission lens 17 of LED illuminating part 13 when covering on 16, the shade that is brought by hole section 18 does not occur.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 described.
In addition, in following each embodiment, for the inscape that repeats with above-mentioned the 1st embodiment or on function same inscape, by giving in the drawings identical label or corresponding label, will illustrate to simplify or omission.
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 a plurality of fins (fin) 42.
The fin 42 of cover 41 has makes the function that is turned back to the light diffusion of appliance body 11 sides by the cover reflection, and has and will pass to the function of the heat heat radiation of cover 41.
According to the ligthing paraphernalia 40 of the 2nd embodiment, make the light diffusion of shining towards hole section 18 prevent the shade that is brought by hole section 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 the Luminance Distribution in the situation of the cover 19 of the ligthing paraphernalia 10 that uses the 1st embodiment, use the Luminance Distribution in the situation of cover 41 of ligthing paraphernalia 40 of the 2nd embodiment and do not use the Luminance Distribution of the ligthing paraphernalia of cover to compare.
In addition, to curve map shown in Figure 9, the longitudinal axis represents brightness at Fig. 7, 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 to compare with the periphery of ligthing paraphernalia 10 and change little high luminance values.Namely, owing to will be from the direct light that the part of the light of LED illuminating part 13 arrives the reverberation of the light of cover 19 and then the central portion that 19 reflections of tegmentum parts arrive cover 16 by cover 16 reflections and from the light scioptics 17 of LED illuminating part 13 and directly 16 central portion is covered in arrival, the brightness of the central portion of ligthing paraphernalia 10 can access to compare with the periphery of ligthing paraphernalia 10 and change little high luminance values, the ligthing paraphernalia of the uneven luminance that can be reduced.
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 to compare with the periphery of ligthing paraphernalia 10 and change little high luminance values.Namely, same with above-mentioned the 1st embodiment, owing to the reverberation of the central portion that will arrive from fin 42 reflections that the part of the light of LED illuminating part 13 arrives the light of cover 41 and then tegmentum parts 41 by cover 16 reflections cover 16 and from the light scioptics 17 of LED illuminating part 13 and directly arrival cover the direct light of 16 central portion, the brightness of the central portion of ligthing paraphernalia 10 can access to compare with the periphery of ligthing paraphernalia 40 and change little high luminance values, the ligthing paraphernalia of the uneven luminance that can be reduced.
In contrast, as shown in Figure 9, at the periphery of the ligthing paraphernalia that does not use cover, although such 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 occurs namely.
By comparative example as can be known, the ligthing paraphernalia 10 of cover 19 is installed and in hole section 18 central portion of the ligthing paraphernalia 40 of cover 41 is installed in hole section 18, and do not have the situation of mounting cover parts to compare in hole section 18, can access and exceed 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.
More than, preferred embodiment of the present invention has been described, but the present invention is not limited to these specific embodiments, in the category that does not break away from claims, can carry out diversified change and distortion, these changes and distortion also belong in the category of the present invention.

Claims (3)

1. a ligthing paraphernalia is characterized in that,
Possess:
Appliance body;
Installation portion is used for above-mentioned appliance body is installed to ceiling surface;
A plurality of LED illuminating parts are located at the periphery of above-mentioned appliance body;
Power supply unit is to above-mentioned each LED illuminating part power supply; And
Cover is installed on above-mentioned appliance body, and above-mentioned each LED illuminating part is covered;
Above-mentioned each LED illuminating part has lens;
Said lens is with the wide-angle lens of light luminous intensity distribution to the 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 the 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.
3. ligthing paraphernalia as claimed in claim 1 or 2 is characterized in that,
This ligthing paraphernalia has cover, and the above-mentioned cover side of the above-mentioned installation portion that this cover will arrange at the above-mentioned central portion of above-mentioned appliance body covers.
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 true CN102954367A (en) 2013-03-06
CN102954367B CN102954367B (en) 2014-12-03

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Cited By (2)

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CN103604075A (en) * 2013-11-28 2014-02-26 林英强 Led ceiling lamp
CN105202394A (en) * 2015-10-23 2015-12-30 欧普照明股份有限公司 Lens combination and lighting device applying same

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JP5877353B2 (en) * 2011-09-06 2016-03-08 パナソニックＩｐマネジメント株式会社 lighting equipment
JP5846383B2 (en) * 2012-07-11 2016-01-20 東芝ライテック株式会社 lighting equipment
KR101568267B1 (en) 2014-04-15 2015-11-11 노명재 Line structure type led spot module included spot light type lens optical system for luminous intensity distribution control of multi-source
CN108779900B (en) * 2016-03-05 2021-11-05 爱丽思欧雅玛株式会社 Lighting device
JP6590737B2 (en) * 2016-03-05 2019-10-16 アイリスオーヤマ株式会社 Lighting device
JP6931809B2 (en) * 2017-04-13 2021-09-08 パナソニックＩｐマネジメント株式会社 lighting equipment

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JP2008243510A (en) * 2007-03-27 2008-10-09 Matsushita Electric Works Ltd Lighting system
JP2008300203A (en) * 2007-05-31 2008-12-11 Toshiba Lighting & Technology Corp Luminaire
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Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN103604075A (en) * 2013-11-28 2014-02-26 林英强 Led ceiling lamp
CN105202394A (en) * 2015-10-23 2015-12-30 欧普照明股份有限公司 Lens combination and lighting device applying same
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CN105202394B (en) * 2015-10-23 2020-04-21 欧普照明股份有限公司 Lens combination and lighting device using same
CN108386817B (en) * 2015-10-23 2020-05-01 欧普照明股份有限公司 Lens combination and lighting device using same

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JP5919505B2 (en) 2016-05-18
CN102954367B (en) 2014-12-03
JP2013045630A (en) 2013-03-04

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