CN204345445U

CN204345445U - Ligthing paraphernalia

Info

Publication number: CN204345445U
Application number: CN201390000605.XU
Authority: CN
Inventors: 中村恭平; 关井广行; 西哲也; 冈田敏纯
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2012-08-08
Filing date: 2013-07-29
Publication date: 2015-05-20
Anticipated expiration: 2023-07-29
Also published as: WO2014024412A1; JP2013062238A; JP6052662B2

Abstract

A kind of ligthing paraphernalia is provided, possesses: appliance body; Power supply, is configured in the central portion of appliance body; Multiple LED, is configured to circular around power supply; Optics, controls the luminous intensity distribution of the light radiated from multiple LED; And proliferation part, the light having been carried out distribution controls by optics is spread.Optics has forwards convex lens section at the position corresponding with multiple LED.Lens section is, the end by power supply side on the direction that LED and power supply are linked, be provided with the light from LED towards the first protuberance of the center side luminous intensity distribution of proliferation part, the end of the side contrary with power supply in the aforementioned direction, is configured with the light from LED towards the second protuberance of the outer edge side luminous intensity distribution of proliferation part.

Description

Ligthing paraphernalia

Technical field

The utility model relates to a kind of ligthing paraphernalia.

Background technology

Japanese Patent Publication 2003-86006 publication (hereinafter referred to as document 1), discloses a kind of illuminating lighting device that can be installed on ceiling.This lighting device possesses and is formed as discoid base plate, is provided with power supply and lamp device, and is configured with on a face of base plate circularly around multiple LED of lamp device in the substantially central portion of base plate.In addition, in the front of multiple LED, rotatably be provided with distribution controls parts, these distribution controls parts along the orientation of LED be arranged alternately with make from the light of LED radiation to immediately below optically focused narrow angle luminous intensity distribution portion and make the wide-angle light-distribution portion of the light diffusion from LED radiation.

In the luminaire, make narrow angle luminous intensity distribution portion opposed with each LED by making distribution controls parts rotate, can make thus from the light of LED radiation to immediately below optically focused, and by making wide-angle light-distribution portion opposed with each LED, the light radiated from LED can be made thus to be diffused as wide-angle.

In the lighting device shown in above-mentioned document 1, although the light luminous intensity distribution radiated from LED can be made to be wide-angle, but with to immediately below light quantity compared with, less to the light quantity of the device center side being configured with lamp device, therefore there is central portion compared with other positions dimmed and become inaesthetic problem.

Utility model content

The utility model is put in view of the above problems and makes, and its object is to provide a kind of ligthing paraphernalia, carries out luminous intensity distribution by the light will radiated from LED to the whole face of proliferation part, improve aesthetics thus.

Ligthing paraphernalia of the present utility model possesses: appliance body; Power supply, is configured in the central portion of appliance body; Multiple LED, is configured to circular around power supply, lighted by the electric power supplied from power supply; Optics, is configured in the front of multiple LED, controls the luminous intensity distribution of the light radiated from multiple LED; And proliferation part, be configured in the front of optics, the light having been carried out distribution controls by optics is spread.Optics has forwards convex lens section at the position corresponding with multiple LED.On the direction that each LED in multiple LED and power supply are linked, the lens section end by power supply side in the direction in which, be provided with the light from this LED towards the first protuberance of the center side luminous intensity distribution of proliferation part, the end of the lens section side contrary with power supply in the direction in which, is provided with the light from this LED towards the second protuberance of the outer edge side luminous intensity distribution of proliferation part.

Be preferably in this ligthing paraphernalia, lens section is set to, from multiple LED by the first protuberance among the light of outgoing the shooting angle of the first main beam that luminous intensity is the strongest be set to equal angular respectively, from multiple LED by the second protuberance among the light of outgoing the shooting angle of the second main beam that luminous intensity is the strongest be set to equal angular respectively.

Be preferably in this ligthing paraphernalia, lens section is set to, for each LED in multiple LED, from this LED by the shooting angle of the strongest the first main beam of luminous intensity among the light of the first protuberance and outgoing and from this LED by the second protuberance the shooting angle of the second main beam that luminous intensity is the strongest among the light of outgoing, be set to equal angular relative to the optical axis of this LED.

Be preferably in this ligthing paraphernalia, multiple LED comprises: a multiple LED, is configured in radius and is set to first circle of r1 circumferentially, and multiple 2nd LED, be configured in and be set to second of the r2 larger than r1 with the concentric and radius of the first circle and justify circumferentially, lens section comprises the first lens section being arranged on the position corresponding with a LED and the second lens section being arranged on the position corresponding with the 2nd LED, by from a LED, by the first protuberance of the first lens section, the optical axis angulation of the first main beam that among the light of outgoing, luminous intensity is the strongest and a LED is set to θ 1, by from the intersection point of first main beam of a LED and proliferation part to by the first circle and the center of the second circle and the distance the First Line parallel with the optical axis of a LED is set to L1, by from the 2nd LED, by the first protuberance of the second lens section, the optical axis angulation of the first main beam that among the light of outgoing, luminous intensity is the strongest and the 2nd LED is set to θ 2, by when being set to L2 from first main beam of the 2nd LED and the distance of intersection point to First Line of proliferation part, angle θ 1 and θ 2 is set as meeting by the first lens section and the second lens section: 2 × r1 >=r2, 3 × L2≤L1, r1 >=L1, L2 >=0.In addition, the intersection point of above-mentioned first main beam and proliferation part refers to the intersection point of the medial surface of above-mentioned first main beam and proliferation part.

Be preferably in this ligthing paraphernalia, either party of at least plane of incidence or the exit facet of lens section has been implemented DIFFUSION TREATMENT.

Be preferably in this ligthing paraphernalia, the diffusivity near the respective optical axis of multiple LED of lens section is higher than other positions.

Be preferably in this ligthing paraphernalia, the orientation that lens section comprises along multiple LED is formed as circular single lens section.

Be preferably in this ligthing paraphernalia, lens section comprises the multiple lens sections being separately positioned on the position corresponding with multiple LED.

Be preferably in this ligthing paraphernalia, multiple LED comprises: a multiple LED, is configured in radius and is set to first circle of r1 circumferentially; And multiple 2nd LED, be configured in and be set to second of the r2 larger than r1 with the concentric and radius of the first circle and justify circumferentially, lens section comprises the first lens section being arranged on the position corresponding with a multiple LED and the second lens section being arranged on the position corresponding with multiple 2nd LED.

The effect had is, can provide a kind of ligthing paraphernalia, by the light that will radiate from LED to whole luminous intensity distribution of proliferation part, which thereby enhances aesthetics.

Accompanying drawing explanation

Fig. 1 is the exploded perspective view of the ligthing paraphernalia representing embodiment 1.

Fig. 2 A to be the stereoscopic figure of this ligthing paraphernalia observed from front face side, Fig. 2 B be stereoscopic figure of this ligthing paraphernalia of observing of side from behind in Fig. 2.

Fig. 3 is the major part enlarged drawing of this ligthing paraphernalia.

In Fig. 4, Fig. 4 A, 4B are the light distribution characteristic figure of the optics forming this ligthing paraphernalia.

In Fig. 5, Fig. 5 A, 5B are the light distribution characteristic figure of other opticses forming this ligthing paraphernalia.

In Fig. 6, Fig. 6 A, 6B are the light distribution characteristic figure of other the other opticses forming this ligthing paraphernalia.

In Fig. 7, Fig. 7 A, 7B are the light distribution characteristic figure of another other opticses in addition forming this ligthing paraphernalia.

In Fig. 8, Fig. 8 A, 8B are the major part enlarged drawings of the optics forming this ligthing paraphernalia.

Fig. 9 is the schematic diagram of the luminous intensity distribution state of the ligthing paraphernalia representing embodiment 2.

In Figure 10, Figure 10 A, 10B are the light distribution characteristic figure of the optics forming this ligthing paraphernalia, and Figure 10 C, 10D are the light distribution characteristic figure of the optics of comparison other.

In Figure 11, Figure 11 A is the schematic diagram of the luminous intensity distribution state representing the optics forming this ligthing paraphernalia, and Figure 11 B is the schematic diagram of the luminous intensity distribution state of the optics representing comparison other.

In Figure 12, Figure 12 A, 12B are the intensity maps of this ligthing paraphernalia, and Figure 12 C, 12D are the intensity maps of the ligthing paraphernalia of the optics with comparison other.

Detailed description of the invention

Below, be described with reference to the embodiment of accompanying drawing to ligthing paraphernalia.This ligthing paraphernalia is so-called lamp affixed to the ceiling, is directly installed on ceiling and for throwing light on to indoor entirety.

(embodiment 1)

Fig. 1 is the exploded perspective view of an example of the ligthing paraphernalia A representing present embodiment, and this ligthing paraphernalia A possesses: be formed as discoid appliance body 1; Be configured in the power supply 5 of the central portion of appliance body 1; And be configured to circular illuminating part 2 around power supply 5.In addition, ligthing paraphernalia A possesses: optics 3, is configured in the front of illuminating part 2, controls the luminous intensity distribution of the light radiated from illuminating part 2; And proliferation part 4, be configured in the front of optics 3, the light carrying out self-luminescent part 2 having been carried out distribution controls by optics 3 is spread.

Illuminating part 2 has multiple (in Fig. 1 the being four) installation base plate 21 being bent into arc-shaped, in a face of each installation base plate 21 (above; Above in Fig. 1) on, the long side direction of multiple LED (light emitting diode) 22 with 2 row and along installation base plate 21 on the width of installation base plate 21 is installed.These installation base plates 21 as shown in Figure 1 around be configured in appliance body 1 central portion power supply 5 and be configured to circular, such as use mounting screw (not shown) to be installed on appliance body 1.In the present embodiment, multiple LED22 comprises: a multiple LED221, is configured in radius and is set to first circle of r1 circumferentially; And multiple 2nd LED222, be configured in and be set to second of the r2 larger than r1 with the concentric and radius of the first circle and justify circumferentially.A multiple LED221 first circle circumferentially to configure at equal intervals, multiple 2nd LED222 second circle circumferentially to configure at equal intervals.

Power supply 5 generates lights electric power for what lighted by multiple LED22 that installation base plate 21 is installed, is supplied by the electric power of lighting generated via electric wire (not shown) to each installation base plate 21.Specifically, the alternating voltage supplied from external power source (not shown) is converted to the DC voltage of desired magnitude of voltage (in order to make LED22 light required voltage value) by power supply 5, and is supplied to each installation base plate 21 by the DC voltage after conversion.In addition, this power supply 5 such as uses mounting screw (not shown) to be installed on appliance body 1.

Proliferation part 4 is such as formed as a face (below by the milky allyl resin that with the addition of light diffusing agent; Below in Fig. 1) the dome shape of opening, be detachably installed on appliance body 1 from the front of optics 3.

Optics 3 has discoid main part 31, and this main part 31 is formed by the material (such as allyl resin, polycarbonate resin, glass etc.) with light transmission, is formed with circular opening portion 31a at central portion.In a face of main part 31 (above; Above in Fig. 1) on, as shown in Figure 1 and Figure 3, concentric circles is provided with the 2 row lens section 32,33 that forwards (upside in Fig. 3) is convex.Herein, in the present embodiment, with the form corresponding with the LED221 that the inner side (power supply 5 side) of each installation base plate 21 is installed to arrange lens section 32, and with the form corresponding with the LED222 that the outside (side contrary with power supply 5) of each installation base plate 21 is installed to arrange lens section 33.

That is, optics 3 is at the position corresponding with multiple LED22 (221,222), possesses forwards convex lens section 32,33.Lens section comprises: the first lens section 32 being arranged on the position corresponding with a multiple LED221; And be arranged on second lens section 33 at the position corresponding with multiple 2nd LED222.In the present embodiment, the first lens section 32 is single parts, and the orientation along a multiple LED is formed as circular (that is, the center that the first lens section 32 is round relative to first is according to arbitrary angle Rotational Symmetry).In addition, the second lens section 33 is single parts, and the orientation along multiple 2nd LED is formed as circular (that is, the center that the second lens section 33 is round relative to second is according to arbitrary angle Rotational Symmetry).

Below, lens section 32,33 is described in detail.

Lens section 32 is formed as forwards (upside in Fig. 3) convex convex surface, and (downside in Fig. 3) is provided with housing recess 32c for configuring multiple LED221 with circular (passage shape) in the wings.In addition, in the direction that the LED22 of assembled state and power supply are linked (by the direction that lens section 32 and power supply 5 link; First direction; Left and right directions in Fig. 3) on, in the end by power supply 5 side (left side in Fig. 3) of lens section 32, (with circular) is provided with the first protuberance 32a, to the light from LED221 of this first protuberance 32a incidence, by towards the central part side luminous intensity distribution of proliferation part 4 being configured in front.And, on above-mentioned first direction, in the end of the side (right side in Fig. 3) contrary with power supply 5 of lens section 32, (with circular) is provided with the second protuberance 32b, the light from LED221 of incident this second protuberance 32b, by towards the outer edge portion side luminous intensity distribution of proliferation part 4 being configured in front.

Lens section 33 is formed as forwards equally (upside in Fig. 3) convex convex surface, and (downside in Fig. 3) is provided with housing recess 33c for configuring multiple LED222 with circular (passage shape) in the wings.In addition, on above-mentioned first direction, in the end by power supply 5 side (left side in Fig. 3) of lens section 33, (with circular) is provided with the first protuberance 33a, to the light from LED222 of this first protuberance 33a incidence, by towards the central part side luminous intensity distribution of proliferation part 4 being configured in front.And, on above-mentioned first direction, in the end of the side (right side in Fig. 3) contrary with power supply 5 of lens section 33, (with circular) is provided with the second protuberance 33b, the light from LED222 of incident this second protuberance 33b, by towards the outer edge portion side luminous intensity distribution of proliferation part 4 being configured in front.

This optics 3 such as uses mounting screw (not shown) to be installed on appliance body 1.In addition, about the light distribution characteristic of lens section 32,33 by aftermentioned.

In addition, lens section 32 also can be respectively arranged with multiple housing recess 32c in the position corresponding with multiple LED221.Lens section 33 also can be respectively arranged with multiple housing recess 33c in the position corresponding with multiple LED222.

In addition, lens section 32 also can comprise the multiple lens sections being separately positioned on the position corresponding with multiple LED221.That is, also the lens section with the first protuberance and the second protuberance can be set for each LED221 (difference) in a multiple LED221.In addition, lens section 33 also can comprise the multiple lens sections being separately positioned on the position corresponding with multiple LED222.That is, also the lens section with the first protuberance and the second protuberance can be set for each the 2nd LED (difference) in multiple 2nd LED221.

Next, the assembling sequence of ligthing paraphernalia A is described.Power supply 5 is being installed on the central portion of appliance body 1 by operator, and face installation base plate 21 being installed on appliance body 1 (above; Above in Fig. 1) after, use electric wire (not shown) to be electrically connected between power supply 5 with each installation base plate 21.Then, operator is in the mode covering each installation base plate 21 from after optics 3 is installed on appliance body 1 by front, and be installed on appliance body 1 from front by proliferation part 4 further, the assembling of ligthing paraphernalia A completes (with reference to Fig. 2 A, 2B) thus.

Then, will be wholely set the hook connector 6 (with reference to Fig. 2 B) in the side below of power supply 5, be installed on the hook seal (not shown) be arranged on ceiling, the construction of ligthing paraphernalia A completes thus.

Then, the light distribution characteristic of the lens section 32,33 of optics 3 is described.

The light distribution characteristic figure (ray trajectory) of the lens section 32 Fig. 4 A is the spot light in center configuration.The light distribution characteristic figure (distribution curve flux) of the lens section 32 Fig. 4 B is the LED221 in center configuration.From the light of LED221 radiation from the exit facet 32d of lens section 32 with radial outgoing.As shown in Figure 4B, from the light of the first protuberance 32a outgoing towards the left side Fig. 4 A, i.e. the central part side luminous intensity distribution of proliferation part 4, in addition, from the light of the second protuberance 32b outgoing towards the right side Fig. 4 A, i.e. the outer edge portion side luminous intensity distribution of proliferation part 4.

On the other hand, the light distribution characteristic figure of the lens section 33 Fig. 5 A is the spot light in center configuration.The light distribution characteristic figure of the lens section 33 Fig. 5 B is the LED222 in center configuration.From the light of LED222 radiation from the exit facet 33d of lens section 33 with radial outgoing.As illustrated in fig. 5b, from the light of the first protuberance 33a outgoing towards the left side Fig. 5 A, i.e. the central part side luminous intensity distribution of proliferation part 4, in addition, from the light of the second protuberance 33b outgoing towards the right side Fig. 5 A, i.e. the outer edge portion side luminous intensity distribution of proliferation part 4.

Herein, when comparing Fig. 4 B and Fig. 5 B, relative to the optical axis (axle of the above-below direction in Fig. 4 B and Fig. 5 B) of LED22, (pass through the light of the first protuberance 32a outgoing from LED221 from the light of the first protuberance 32a outgoing of lens section 32; Light to power supply 5 side outgoing) in the shooting angle of the strongest main beam of luminous intensity, be greater than the light of the first protuberance 33a outgoing from lens section 33 (from the light of LED222 by the first protuberance 33a outgoing; Light to the side outgoing contrary with power supply 5) in the shooting angle of the strongest main beam of luminous intensity.That is, from the main beam of the first protuberance 32a outgoing of lens section 32, compared with the main beam of the first protuberance 33a outgoing from lens section 33, more to the central part side luminous intensity distribution of proliferation part 4.In addition, from the main beam of the first protuberance 32a outgoing of lens section 32, compared with the main beam of the first protuberance 33a outgoing from lens section 33, luminous intensity is stronger.

Further, relative to above-mentioned optical axis, the shooting angle of the main beam that luminous intensity is the strongest from the light of the second protuberance 32b outgoing of lens section 32, the shooting angle of the main beam the strongest with luminous intensity in the light of the second protuberance 33b outgoing from lens section 33 is roughly the same.In addition, from the main beam of the second protuberance 33b outgoing of lens section 33, compared with the main beam of the second protuberance 32b outgoing from lens section 32, luminous intensity is stronger.

Herein, in the present embodiment, being the first main beam from the main beam of first protuberance 32a, 33a outgoing, is the second main beam from the main beam of second protuberance 32b, 33b outgoing.

So, according to the present embodiment, can by the light that radiates from the LED22 central part side luminous intensity distribution towards proliferation part 4 by first protuberance 32a, 33a, and can by the light that radiates from the LED22 outer edge portion side luminous intensity distribution towards proliferation part 4 by second protuberance 32b, 33b.In addition, from the light of other position outgoing of lens section 32,33 by luminous intensity distribution between the central part and outer edge of proliferation part 4, therefore, it is possible to the light radiated from LED22 is carried out luminous intensity distribution to the whole face of proliferation part 4.As its result, the central part of proliferation part 4, outer edge can be suppressed dimmed, the ligthing paraphernalia A that improve aesthetics can be provided.

Particularly, multiple LED22 comprises a multiple LED221 and multiple 2nd LED222; Lens section comprises lens section 32 and lens section 33; The lens section 32 being configured in inner side (power supply 5 side) is, from the LED221 of correspondence by the first protuberance 32a (protuberance of power supply 5 side) of this lens section 32 intensity of the first main beam that luminous intensity is the strongest the light of outgoing, be better than from the LED221 of correspondence by the second protuberance 32b (protuberance of the side contrary with power supply 5) of this lens section 32 intensity of the second main beam that luminous intensity is the strongest the light of outgoing; The lens section 33 being configured in outside (side contrary with power supply 5) is, from the LED222 of correspondence by the first protuberance 33a (protuberance of power supply 5 side) of this lens section 33 intensity of the first main beam that luminous intensity is the strongest the light of outgoing, be weaker than from the LED222 of correspondence by the second protuberance 33b (protuberance of the side contrary with power supply 5) of this lens section 33 intensity of the second main beam that luminous intensity is the strongest the light of outgoing.Thus, from the light of the first protuberance 32a outgoing in LED221 scioptics portion 32 to the central side luminous intensity distribution of proliferation part 4, from the light of the second protuberance 33b outgoing in LED222 scioptics portion 33 to the outer edge portion side luminous intensity distribution of proliferation part 4.Therefore, it is possible to the light radiated from multiple LED22 is carried out luminous intensity distribution to the whole face of proliferation part 4.As its result, the central part of proliferation part 4, outer edge can be suppressed dimmed, the ligthing paraphernalia A that improve aesthetics can be provided.

But, in the above-described embodiments, the situation that left and right is asymmetric, the shape of lens section 32,33 is mutually different is respectively to lens section 32,33 and is illustrated, but such as also as shown in figure 6 a, the lens section 34 of same shape can be set to LED221,222.In this case, be all identical shooting angle from the first main beam of the first protuberance 34a outgoing in each LED22 scioptics portion 34, in addition, from the second main beam of the second protuberance 34b outgoing in each LED22 scioptics portion 34 be also all identical shooting angle.As its result, can reduce in proliferation part 4 and occur brightness disproportionation, the ligthing paraphernalia A that improve aesthetics can be provided equally.In addition, in this case, from the light distribution characteristic (distribution curve flux) of the LED22 of each lens section 34 outgoing as shown in Figure 6B.

In addition, also can as shown in figure 7 a, the lens section 35 that to use relative to the optical axis P1 of LED22 be symmetric shape.Generally, the light distribution characteristic of LED22 is roughly symmetrical relative to optical axis P1.Therefore, in this case, from the shooting angle of the shooting angle of the first main beam of the first protuberance 35a outgoing of each lens section 35 and the second main beam from the second protuberance 35b outgoing, same angle is set to relative to optical axis P1.As its result, easily luminous intensity distribution design can be carried out, and, intensity to the light of the central part of proliferation part 4 and the outgoing of edge, outside is the highest, towards LED22 side, brightness reduces monotonously, and the Luminance Distribution therefore in proliferation part 4 becomes level and smooth, and aesthetics improves.

And, also can be as shown in Figure 8 A, use the lens section 36 exit facet 36d and plane of incidence 36e being implemented respectively to DIFFUSION TREATMENT (such as application, sandblasting, concavo-convex etc.), in this case, the change of the Luminance Distribution in proliferation part 4 becomes more level and smooth, and therefore aesthetics improves further.In addition, about DIFFUSION TREATMENT, can implement the both sides of exit facet 36d and plane of incidence 36e as described above, also can only implement the one party of exit facet 36d or plane of incidence 36e.

In addition, the luminous intensity of LED22 is stronger than other positions near optical axis P1, and the diffusivity near optical axis P1 therefore can be made in the exit facet 36d and plane of incidence 36e of lens section 36 to improve (with reference to Fig. 8 B) than other positions.In this case, can suppress lower by the brightness near the optical axis P1 of LED22, as its result, the Luminance Distribution in proliferation part 4 becomes more level and smooth, and aesthetics improves further.

In addition, in the present embodiment, be provided with two row lens sections, but also can be such as 1 row, can be also more than 3 row, suitably arrange with the form corresponding with LED.In addition, for the shape of appliance body 1, being also not limited to present embodiment, such as, can be rectangle, also can be the shape beyond it.

And, in an example of present embodiment, the shape of each lens section is made to be identical shape, make from the shooting angle of the first main beam of the first protuberance outgoing thus and between each lens section, become equal angular from the shooting angle of the second main beam of the second protuberance outgoing, but the shape of each lens section not necessarily needs for identical shape, as long as the shooting angle of the first main beam and the second main beam becomes the shape of equal angular between each lens section.

In addition, in an example of present embodiment, symmetric shape is become relative to optical axis by making the shape of each lens section, make thus from the shooting angle of the first main beam of the first protuberance outgoing with become equal angular from the shooting angle of the second main beam of the second protuberance outgoing, but the shape of each lens section not necessarily needs for symmetric shape, as long as the shooting angle of the shooting angle of the first main beam and the second main beam becomes the shape of equal angular.

(embodiment 2)

Be described with reference to the embodiment 2 of Fig. 9 ~ Figure 12 to ligthing paraphernalia A.In addition, the basic comprising of ligthing paraphernalia A is identical with embodiment 1, as required can with reference to Fig. 1.

Fig. 9 is the schematic diagram of the luminous intensity distribution state of the ligthing paraphernalia A representing present embodiment.The ligthing paraphernalia A of present embodiment comprises multiple LED22.Multiple LED22 comprises a multiple LED221 and multiple 2nd LED222.One LED221 (right side in Fig. 9) is configured in radius and is set to first circle of r1 circumferentially, and the 2nd LED222 (left side in Fig. 9) is configured in concentric with above-mentioned first circle and radius is set to be greater than second circle of the r2 (r2 > r1) of r1 circumferentially.In addition, the c1 in Fig. 9 is the center of above-mentioned first circle and the second circle.

In addition, in the front of these LED22, be configured with discoid optics 3 (with reference to Fig. 1) in the same manner as embodiment 1, be respectively arranged with forwards convex lens section 38 (with reference to Figure 10 A) at the position corresponding with each LED22 (221,222).Further, in each lens section 38, the at one end side (central side of the first circle; Right side in Figure 10 A), be provided with the first protuberance 38a in the same manner as embodiment 1, another side (left side in Figure 10 A) is provided with the second protuberance 38b., form the first lens section 381 by the lens section 38 corresponding with a multiple LED221 herein, form the second lens section 382 by the lens section 38 corresponding with multiple 2nd LED222.In the present embodiment, to be formed as cross sectional shape mutually identical for the first lens section 381 and the second lens section 382.

In addition, angle θ 1 in Fig. 9 is the first main beam b1 that the light (from the light of a LED221 by the first protuberance outgoing of the first lens section 381) of the first protuberance outgoing from the first lens section 381, luminous intensity is the strongest, optical axis P3 angulation with a LED221, and angle θ 2 is the first main beam b2 that the light (from the light of the 2nd LED221 by the first protuberance outgoing of the second lens section 382) of the first protuberance outgoing from the second lens section 382, luminous intensity is the strongest, and the optical axis P4 angulation of the 2nd LED222.Further, the some a1 in Fig. 9 is the intersection point of the medial surface of above-mentioned first main beam b1 and proliferation part 4, and some a2 is the intersection point of the medial surface of above-mentioned first main beam b2 and proliferation part 4.Point a1 is positioned at opposition side relative to First Line P2.That is, from the first main beam b1 of a LED221, irradiate to the opposite side of the center c1 of the first circle in proliferation part 4.Point a2 is positioned at opposition side relative to First Line P2.That is, from the first main beam b2 of the 2nd LED222, irradiate to the opposite side of the center c1 of the second circle in proliferation part 4.In addition, the distance L1 in Fig. 9 is from an a1 to by the center c1 of above-mentioned first circle and the second circle and distance the First Line P2 parallel with optical axis P3, and distance L2 is from the distance an a2 to First Line P2.

At this, in the present embodiment, from angle θ 1, the θ 2 of first main beam b1, b2 of the first protuberance outgoing of the first lens section 381 and the second lens section 382, be set to meet following (1) ~ (4) formula, the light distribution amount of near the central authorities of proliferation part 4 (near First Line P2) can be made thus to increase.Below, be described particularly.

2×r1≥r2 ····(1)

3×L2≤L1 ····(2)

r1≥L1 ····(3)

L2≥0 ····(4)

Figure 10 A, 10B are the light distribution characteristic figure of the optics 3 of present embodiment.In this optics 3, the first lens section and the second lens section are made up of identical lens section 38, are set to θ 1=θ 2=65 ° from first main beam b1, b2 of the first protuberance 38a outgoing and optical axis P3, P4 angulation.On the other hand, Figure 10 C, 10D is the light distribution characteristic figure of the optics 3 of comparison other.Also, the first lens section and the second lens section are made up of identical lens section 37 this optics 3, are set to θ 1=θ 2=69 ° from first main beam b1, b2 of the first protuberance 37a outgoing and optical axis P3, P4 angulation.

At this, Figure 11 B is the schematic diagram of the luminous intensity distribution state of the ligthing paraphernalia representing the lens section 37 possessing comparison other, is set as in this case, r1=155mm, r2=190mm, L1=102.74mm, L2=52.37mm.When these values are substituted into above-mentioned (1) ~ (4) formula, become 2 × r1=2 × 155=310mm > r2 (=190mm), r1 (=155mm) > L1 (=102.74mm), L2=52.37mm > 0, meet (1), (3), (4) formula.But become 3 × L2=3 × 52.37=157.11mm > L1 (=102.74mm), do not meet (2) formula, in this case, the central portion of proliferation part 4 is dimmed a little (with reference to Figure 12 C, 12D).

On the other hand, Figure 11 A is the schematic diagram of the luminous intensity distribution state of the ligthing paraphernalia representing the lens section 38 possessing present embodiment, is set as in this case, r1=125mm, r2=190mm, L1=70.99mm, L2=13.45mm.When these values are substituted into above-mentioned (1) ~ (4) formula, become 2 × r1=2 × 125=250mm > r2 (=190mm), 3 × L2=3 × 13.45=40.35mm < L1 (=70.99mm), r1 (=125mm) > L1 (=70.99mm), L2=13.45mm > 0, meet the whole of (1) ~ (4) formula.In addition, when comparing with the situation shown in Figure 11 B, known first main beam b1, b2 irradiates near the central authorities of proliferation part 4 (with reference to Figure 12 A, 12B).

So, by setting r1, r2, L1, L2, θ 1, θ 2 respectively in the mode meeting above-mentioned (1) ~ (4) formula, can make thus to increase to the light distribution amount near the central authorities of proliferation part 4 as shown in Figure 12 A, 12B.Thus, the luminance uniformity of proliferation part 4 improves, and can provide the ligthing paraphernalia A further increasing aesthetics.

That is, 2 times of distance L2, correspond to considering when being configured in by two the 2nd LED222 on the position relative to the center c1 symmetry of the second circle, " distance between the first main beam b2 of two the 2nd LED222 and the intersection point of proliferation part 4 ".Therefore, make below 2 of distance L2 times of differences becoming distance L1 and distance L2 (2 × L2≤L1-L2) as described above, can luminance uniformity be improved thus near the central authorities of proliferation part 4.

In addition, in order to make the luminance uniformity of proliferation part 4 improve, some a1 be preferably located at first circle inside not from first circle circumference too away from place.Specifically, r1≤L1+ (L1-L2) is preferably met.

In addition, in order to improve the luminance uniformity of proliferation part 4,2 of distance L2 times of differences (2 × L2 ≈ L1-L2) being substantially equal to distance L1 and distance L2 are preferably made.In this case, relative to proliferation part 4, other other the first main beam b1 of a LED221 of the first main beam b2/ of the 2nd LED222 of the first main beam b2/ of first main beam b1/ the 2nd LED222 of the one LED221, to irradiate roughly at equal intervals on the first radius of a circle direction, the luminance uniformity of proliferation part 4 can be improved.In addition, the first radius of a circle r1 is preferably made to be substantially equal to the difference (r1-L1 ≈ L1-L2) of distance L1 and distance L2 with the difference of distance L1 further.

In addition, in the present embodiment, the shape (lens section 38) making the first lens section and the second lens section become identical, as long as but can make to increase to the light distribution amount near the central authorities of proliferation part 4, can be also then difformity, and be not limited to present embodiment.In addition, the value of r1, r2, L1, L2, θ 1, θ 2 is an example, as long as meet whole value of above-mentioned (1) ~ (4) formula, also can be then other values, the luminance uniformity of proliferation part 4 can be made equally to improve, the ligthing paraphernalia A further increasing aesthetics can be provided.

Claims

1. a ligthing paraphernalia, is characterized in that, possesses:

Appliance body;

Power supply, is configured in the central portion of above-mentioned appliance body;

Multiple LED, is configured to circular around above-mentioned power supply, is lighted by the electric power supplied from above-mentioned power supply;

Optics, is configured in the front of above-mentioned multiple LED, controls the luminous intensity distribution of the light from above-mentioned multiple LED radiation; And

Proliferation part, is configured in the front of above-mentioned optics, and the light having been carried out distribution controls by above-mentioned optics is spread,

Above-mentioned optics has forwards convex lens section at the position corresponding with above-mentioned multiple LED,

On the direction that each LED in above-mentioned multiple LED and above-mentioned power supply are linked, the end by above-mentioned power supply side in the direction in which, said lens portion, be provided with the light from this LED towards the first protuberance of the center side luminous intensity distribution of above-mentioned proliferation part, the end of the side contrary with above-mentioned power supply in the direction in which, said lens portion, is provided with the light from this LED towards the second protuberance of the outer edge side luminous intensity distribution of above-mentioned proliferation part.

2., as the ligthing paraphernalia that claim 1 is recorded, it is characterized in that,

Said lens portion is set to, from above-mentioned multiple LED by above-mentioned first protuberance among the light of outgoing the shooting angle of the first main beam that luminous intensity is the strongest be set to equal angular respectively, from above-mentioned multiple LED by above-mentioned second protuberance among the light of outgoing the shooting angle of the second main beam that luminous intensity is the strongest be set to equal angular respectively.

3., as the ligthing paraphernalia that claim 1 or 2 is recorded, it is characterized in that,

Said lens portion is set to, for each LED in above-mentioned multiple LED, from this LED by above-mentioned first protuberance among the light of outgoing the first main beam that luminous intensity is the strongest shooting angle and from this LED by above-mentioned second protuberance the shooting angle of the second main beam that luminous intensity is the strongest among the light of outgoing, be set to equal angular relative to the optical axis of this LED.

4., as the ligthing paraphernalia that claim 1 or 2 is recorded, it is characterized in that,

Above-mentioned multiple LED comprises: a multiple LED, is configured in radius and is set to first circle of r1 circumferentially; And multiple 2nd LED, be configured in and be set to second of the r2 larger than r1 with the concentric and radius of above-mentioned first circle and justify circumferentially,

Said lens portion comprises the first lens section being arranged on the position corresponding with an above-mentioned LED and the second lens section being arranged on the position corresponding with above-mentioned 2nd LED,

By from an above-mentioned LED, by above-mentioned first protuberance of above-mentioned first lens section, the optical axis angulation of the first main beam that among the light of outgoing, luminous intensity is the strongest and a LED is set to θ 1, by from the intersection point of first main beam of a LED and above-mentioned proliferation part to by above-mentioned first circle and the above-mentioned center of the second circle and the distance the First Line parallel with the optical axis of a LED is set to L1;

By from above-mentioned 2nd LED, by above-mentioned first protuberance of above-mentioned second lens section, the optical axis angulation of the first main beam that among the light of outgoing, luminous intensity is the strongest and the 2nd LED is set to θ 2, by when being set to L2 from first main beam of the 2nd LED and the distance of intersection point to above-mentioned First Line of above-mentioned proliferation part

Above-mentioned angle θ 1 and θ 2 is set as meeting by the first lens section and the second lens section:

(1)2×r1≥r2；

(2)3×L2≤L1；

(3)r1≥L1；

(4)L2≥0。

5., as the ligthing paraphernalia that claim 1 or 2 is recorded, it is characterized in that,

Either party of at least plane of incidence or the exit facet in said lens portion has been implemented DIFFUSION TREATMENT.

6., as the ligthing paraphernalia that claim 1 or 2 is recorded, it is characterized in that,

The diffusivity near the respective optical axis of above-mentioned multiple LED in said lens portion is higher than other positions.

7., as the ligthing paraphernalia that claim 1 or 2 is recorded, it is characterized in that,

The orientation that said lens portion comprises along above-mentioned multiple LED is formed as circular single lens section.

8., as the ligthing paraphernalia that claim 1 or 2 is recorded, it is characterized in that,

Said lens portion comprises the multiple lens sections being separately positioned on the position corresponding with above-mentioned multiple LED.

9., as the ligthing paraphernalia that claim 1 is recorded, it is characterized in that,

Said lens portion comprises the first lens section being arranged on the position corresponding with an above-mentioned multiple LED and the second lens section being arranged on the position corresponding with above-mentioned multiple 2nd LED.