CN202813127U

CN202813127U - Illumination device

Info

Publication number: CN202813127U
Application number: CN 201220453580
Authority: CN
Inventors: 山本淳一郎; 吉田和史
Original assignee: Toshiba Lighting and Technology Corp
Current assignee: Toshiba Lighting and Technology Corp
Priority date: 2011-10-05
Filing date: 2012-09-06
Publication date: 2013-03-20
Anticipated expiration: 2022-09-06
Also published as: JP2013080679A; TW201315942A

Abstract

The utility model provides an illumination device capable of avoiding the phenomenon that the central part becomes a dark part and enabling the brightness of a light emitting surface to be homogenized so as to improve the brightness. The illumination device comprises an installation component (1) and a light source part body (2), wherein an installation part (4) which is installed on an installation surface (C) of a device is generally arranged on the central part of the installation component (1); and the light source part body (2) is provided with a light guide plate (6) and a light emitting element (51), wherein the light source part body (2) can be installed on the front surface side of the installation component (1) in an openable-closable way, the outer circumferential part of the light guide plate (6) is provided with a light incident end surface (61), the light guide plate (6) is installed in a way for covering the front surface side of the installation component (1) and containing the installation part (4), and the light emitting element (51) is arranged in a way that the emitting light enters the light incident end surface (61) of the light guide plate (6).

Description

Lighting device

Technical field

Embodiment of the present utility model relates to a kind of lighting device, and this lighting device uses the light-emitting component of light emitting diode (below be called LED (Light Emitting Diode)) etc. as light source, and throws light on LGP.

Background technology

Recently, along with high output, the high efficiency of LED, developed and used LED as lighting device light source, use and can expect long lifetime at indoor or outdoors.This lighting device is that a plurality of LED are installed on the substrate to obtain the brightness of regulation, for example, is used as being installed on the lamp affixed to the ceiling (ceiling light) that the ordinary residence on the ceiling surface etc. is used.

But, produce by force and easily dazzle (glare) from the directive property of the light of LED outgoing, and brightness disproportionation easily occur.Therefore, in order to suppress dazzle and to realize the inhomogeneity raising of light-emitting area, develop the new lighting device that throws light on LGP.

In the situation of this kind lighting device, for example, be arranged at the distributor of ceiling surface, be on the ceiling lamp holder main body, Payload attach fitting (adapter) electrically and mechanically, and at this adapter the lighting device body is installed.Therefore, in order to operate adapter etc. when the installation or removal lighting device body, at the central portion of LGP, be formed with accordingly opening with adapter.

The prior art document

Patent documentation

Patent documentation 1: Japanese Patent Laid-Open 2011-171146 communique

Patent documentation 2: international disclosing No. 2011/081246

But in aforesaid lighting device, the opening of the central portion that forms accordingly with adapter is: light is not subjected to the part of leaded light, and this part can be dimmed, and produce the phenomenon that central portion becomes dark section.

The utility model content

The utility model is because the problems referred to above and finishing, and its purpose is: a kind of lighting device is provided, can avoids described central portion to become the phenomenon of dark section, can make the brightness uniformity of light-emitting area, to improve brightness impression.

The lighting device of embodiment of the present utility model possesses: installation component, this installation component has be used to the installation portion that is installed on the device installed surface in substantial middle section.And, lighting device possesses: the light source portion body that can be opened and closed to be installed on the front surface side of this installation component, the light source portion body has: LGP and light-emitting component, described LGP has light-incident end at peripheral part, and with installation portion is included in interior and cover described installation component the front surface side mode and set, described light-emitting component be incident to emergent light this LGP described light-incident end mode and set.

The effect of utility model

According to embodiment of the present utility model, a kind of lighting device can be provided, can make the brightness uniformity of light-emitting area, to improve brightness impression.

Description of drawings

Fig. 1 is the stereogram of the lighting device of expression embodiment of the present utility model.

Fig. 2 is the cutaway view that the lighting device of expression embodiment of the present utility model is installed on the installment state of ceiling surface.

Fig. 3 is in the state of Fig. 2, with the cutaway view of installation component and light source portion body discrete representation.

Fig. 4 is the stereogram with the light source portion body exploded representation in the lighting device of embodiment of the present utility model.

Fig. 5 is the enlarged drawing of the A section in the presentation graphs 2.

Fig. 6 is illustrated in the lighting device of embodiment of the present utility model, and to the erection sequence that ceiling surface is installed, expression is equipped with the cutaway view of the state of installation component.

Fig. 7 is illustrated in the lighting device of embodiment of the present utility model, to the erection sequence that ceiling surface is installed, is illustrated in the cutaway view that the initial stage process of light source portion body is installed on the installation component.

Fig. 8 is illustrated in the lighting device equally, to the erection sequence that ceiling surface is installed, is illustrated in the cutaway view that the process midway of light source portion body is installed on the installation component.

The explanation of symbol:

1: installation component

2: the light source portion body

3: ignition device

4: installation portion (adapter guide portion)

5: light source portion

6: LGP

7: support underframe

8: the body frame

9: the auxiliary component unit

11: opening

12,13: accessory is accepted in engaging

31: circuit substrate

31a: resin fixture

32: circuit component

41: snap openings

51: light-emitting component (LED)

52: substrate

53: installation component (installing plate)

61: light-incident end

71: recess

72: installation sheet

81: sidewall

82: diapire

83: projection

85,86: the engaging accessory

85a: connecting hole

86a, A1: holding section

A: adapter

C: device installed surface (ceiling surface)

Cb: distributor (ceiling lamp holder main body)

Cn1, Cn3: be subjected to the electricity connector

Cn2: distribution connects with member (power supply connector)

Cn4: power connector

L1, L2, L3: wire

L4: power line

P: liner

Rc: infra-red remote control transmitter

The specific embodiment

The lighting device of present embodiment is: be installed to as the ceiling lamp holder main body of distributor and the form of using, and carry out for example indoor illumination with LGP, described ceiling lamp holder main body as distributor is to be arranged at the device installed surface.

Below, referring to figs. 1 through Fig. 8 embodiment of the present utility model is described.In addition, in each figure, for same section mark same-sign, and the repetitive description thereof will be omitted.

To shown in Figure 5, lighting device possesses: installation component 1 and light source portion body 2 such as Fig. 1.In installation component 1, be equipped with: as the adapter guide portion (adapter guide) of ignition device 3 and installation portion 4.

And light source portion body 2 possesses: light source portion 5, LGP 6, support underframe (support chassis) 7, body frame 8 and auxiliary component unit (unit) 9, described auxiliary component unit 9 is provided with a plurality of electric auxiliary components.

And then, lighting device possesses: electrically and be connected mechanically to adapter A, and the infra-red remote control transmitter Rc that the state of lighting a lamp of light source portion 2 is controlled of ceiling lamp holder main body Cb, described ceiling lamp holder main body Cb is the ceiling surface C that is arranged at as the device installed surface.This kind lighting device forms the roughly outward appearance of square shape, with the shadow surface of front surface side as light, with rear side as the installed surface to ceiling surface C.The below sequentially illustrates these inscapes.

Installation component 1 is: form roughly square shape by the flat board of the metal material of cold-rolled steel sheet etc., and the former open mode of face side and rear side is the device body of convex, particularly be underframe.In substantial middle section, be formed with the opening 11 of toroidal, this opening 11 configurations installation portion 4 described later, this installation portion 4 and the ceiling lamp holder main body Cb that is arranged at ceiling surface C and adapter A are in opposite directions.

And, the position, two places of the open edge in the avris in opposite directions of installation component 1 (on diagram, being the left side), the fixture by screw etc. is equipped with: bend to the key shape and accessory 12 is accepted in the engaging given prominence to laterally.On the other hand, another avris (the diagram on, be the right side) in the position, two places of open edge, to engage accessory 12 mode in opposite directions of accepting with this, similarly the fixture by screw etc. is equipped with: accessory 13 is accepted in side-prominent engaging to the back side.

And then the rear side at installation component 1 is equipped with: liner (packing) P of sponge (sponge) system.

Ignition device 3 is installed in the installation component 1, and ignition device 3 possesses: circuit substrate 31 and the circuit component 32 that is installed in this circuit substrate 31.Circuit substrate 31 comprises the insulating materials of glass epoxide (glass epoxy) resin etc. and forms tabular, be equipped with in face side: the circuit component 32 of control integrated circuit (Integrated Circuit, IC), capacitor (condenser), winding (winding) part, resistive element etc.And, for be connected in mains side (adapter A side) to be subjected to electricity be that light source portion 5 sides are connected with connector (connector) Cn1 and load-side, and be provided with: power supply connector Cn2, this power supply is connected in circuit substrate 31 with connector Cn2 and derives by the wire L1 that connects with member as distribution.And then the rear side at circuit substrate 31 is equipped with: the part of the height dimension less of switch (switching) element or surperficial mounting parts etc.

On diagram, as downside, around the inboard of installation component 1 and

opening

11,31a installs by the resin fixture with face side for circuit substrate 31.Resin fixture 31a disposes from the rear side mode that face side is outstanding forward of installation component 1 with front end, and this resin fixture 31a is pressed in the circuit substrate 31 formed installing holes.

And under the installment state of circuit substrate 31, the described electricity that is subjected to is positioned at the i.e. all sides of opening 11 sides with connector Cn1, and power supply is positioned at outer circumferential side with connector Cn2.

Aforesaid ignition device 3 is: as described later, be subjected to electricity to be electrically connected with adapter A side with connector Cn1, and be connected in commercial ac power source via adapter A.Therefore, ignition device 3 receives this AC power and generates direct current output, and with connector Cn2 this direct current output is supplied to light source portion 5 via power supply from wire L1.

Installation portion 4 is the adapter guide portion, is that adapter A inserts member logical and engaging, and is for the member that ligthing paraphernalia is installed on ceiling surface C.The adapter guide portion forms: have the roughly quadrangle shape of a little gauge, be provided with at central portion: adapter A inserts the snap openings 41 of the toroidal of logical and engaging.This adapter guide portion is to set corresponding to the opening 11 of the substantial middle section that is formed on installation component 1.

In addition, installation portion 4 may not be the member that is known as adapter guide portion etc.For example, also can be formed in the opening of underframe etc., refer to: with as the ceiling lamp holder main body Cb of distributor in opposite directions and member or part that adapter A is engaged.Mainly refer to: the member or the part that are used for lighting device is installed on ceiling surface C.

Then, light source portion body 2 possesses: light source portion 5, LGP 6, support underframe 7, body frame 8 and auxiliary component unit 9.

Light source portion 5, comprises: the installing plate 53 as installation component that the substrate 52 of light-emitting component 51 is installed and this substrate 52 is installed to shown in Figure 5 such as Fig. 2.

Substrate 52 as Fig. 4 typically shown in, form the oblong-shaped of growing crosswise, comprise the flat board as the glass epoxy resin of insulating materials, be applied with the Wiring pattern (pattern) that is formed by Copper Foil in face side, and, stacked resist (resist) layer and forming suitably on Wiring pattern.In addition, the material of substrate 52 when being made as insulating materials, applicable pottery (ceramics) material or synthetic resin material.And then, when being made as metal-made, also applicable metal substrate (base) substrate, described metal basal substrate is: the one side of and substrate plate that thermal diffusivity excellent good in the thermal conductivity of aluminium etc. is laminated with insulating barrier.

Light-emitting component 51 is LED, and is the LED encapsulation (package) of surface installing type.This LED encapsulation is: the long side direction along substrate 52 is arranged linearlyly, and install dispose a plurality of.The LED encapsulation comprises substantially: led chip (chip) is provided in the cavity (cavity) that is formed by pottery or synthetic resin; And epoxy is the translucent resin of molded (mold) usefulness of resin or silicone (silicone) resin etc., seals this led chip.

Led chip is the led chip that sends blue light.Sneaked into fluorophor in translucent resin, for can the outgoing white light, have used yellow fluorophor, this yellow fluorophor radiates: have the light of the yellow system of complementary color relation with blue light.

In addition, LED is: both led chip directly can be installed on substrate 52, and, the LED of bullet cut also can be installed, mounting means or form are not particularly limited.

Installing plate 53 is to be made by the good material of the heat conduction such as aluminium or galvanized steel plain sheet, for growing crosswise and the side forms roughly C shape raceway groove (channel) shape.At the madial wall of this installing plate 53, substrate 52 is solid etc. by spiral shell, and installs in the mode that its rear side is connected airtight.Therefore, light source portion 5 is installation base plate 52 and blocking on installing plate 53.

In the present embodiment, mainly as shown in Figure 4, use the light source portion 5 of two these blocking, and set corresponding to the both sides in opposite directions of LGP 6.And the light source portion 5 of blocking is electrically connected by wire L2 each other, and then, be provided with from a side light source portion 5: be connected in substrate 52 and be subjected to electricity connector Cn3 by what wire L3 derived.

In addition, the light source portion 5 of this blocking also can be corresponding to the mode on each limit of LGP 6 and is set, and can suitably select according to design.

LGP 6 is to use the high material of transmitance such as acrylic resin (acryl resin) and the tabular that forms the quadrangle shape, overleaf on whole of side, be formed with dot pattern by printing, this dot pattern comprises the pip (dot) of a plurality of whites that make the light diffusion, and is provided with reflective sheet (sheet).And, be provided with the diffusion sheet material whole of front surface side.And, the peripheral part of this LGP 6, be that two side end faces in opposite directions in the side end face on each limit of quadrangle shape are: as from light institute's incident of light-emitting component 51 outgoing and the light-incident end 61 of in LGP 6, advancing and the performance function.

Light-incident end 61 at this kind LGP 6 sets: the substrate 52 of light source portion 5.That is, mainly as shown in Figure 5, be incident to the mode of the light-incident end 61 of LGP 6 with light, make a plurality of light-emitting components 51 arrange linearlyly and be provided in substrate 52.And LGP 6 is included installation portion 4, and covers the front surface side of installation component 1.

Support underframe 7 is also used as radiating component, as radiating component performance function.Support underframe 7 is: by the metal material of aluminium with thermal conductivity etc., possess relatively large area and form roughly square shape, side has the recess 71 of the shallow discoid of square shape overleaf, is formed with on each limit of this recess 71: bend to laterally installation sheet 72 stepped and that extend.And the front surface side of recess 71 constitutes the supporting surface that supports LGP 6.

Body frame 8 is by acrylonitrile-butadiene-styrene (Acrylonitrile Butadiene Styrene, ABS) synthetic resin of resin or Merlon (polycarbonate) etc. and making, form: roughly square shape and the frame shape larger than the size of described LGP 6, as shown in Figure 5, body frame 8 possesses: sidewall 81 and have the diapire 82 of skewed section, extend to oblique below towards the inboard this skewed the bottom from this sidewall 81, and then erect obliquely towards the inboard.And, being provided with a plurality of projections (boss) 83 in that diapire 82 is vertical, the installation sheet 72 of support underframe 7 is fixed at this projection 83.

And then, the position, two places of the edge in the avris in opposite directions of body frame 8 (on diagram, being the left side), the fixture by screw etc. is equipped with: have connecting hole 85a and outstanding engaging accessory 85 laterally.On the other hand, the position, two places of edge in opposite side (on diagram, being the right side), with engage with this accessory 85 in opposite directions mode and be equipped with and engage accessory 86.This engaging accessory 86 is anchor clamps (clamp) accessories, forms bending and has elasticity, possesses holding section 86a and is supported in rotationally body frame 8 in front.

This

kind engaging accessory

85,86 with: with set engaging on the aforesaid installation component 1 accept

accessory

12,13 in opposite directions mode and set, and be sticked in engaging in the mode that is described in detail later and accept

accessory

12,13.

In addition, in the present embodiment, by these engaging

accessories

85,86 and engaging accept

accessory

12,13 and consist of clamping close device.

Auxiliary component unit 9 is: in the box body (case) of the case shape of growing crosswise, possess: cell substrate and be installed in a plurality of electric auxiliary component on this substrate and consist of.Electric auxiliary component in the present embodiment is: infrared remote control signal acceptance division, night-light (all night light) or channel setting switch.

This auxiliary component unit 9 is provided in the periphery edge of lighting device, particularly, is provided in the periphery edge of body frame 8.Therefore, this auxiliary component unit 9 is provided in the outside of the light-emitting zone of LGP 6.The auxiliary component unit 9 that consists of in this way is: a plurality of electric auxiliary component centralization are established, and be installed in the body frame 8.

Adapter A as shown in Figures 2 and 3, be: by the hook that is located at upper surface side electrically and be connected mechanically to the part of the furred ceiling lamp holder body Cb that is arranged on ceiling surface C, be roughly cylindric, and in the both sides of perisporium, to be provided with a pair of holding section A1 to the side-prominent mode of periphery all the time by built-in spring (spring).This holding section A1 submerges by the action bars (lever) that is located at lower face side is operated.

And, have from this adapter A derivation: be connected to not shown power line (cord) L4 of described ignition device 3, and connecting power connector Cn4 at the leading section of power line L4.This power connector Cn4 is connected in the set electricity connector Cn1 that is subjected in the ignition device 3.

Infra-red remote control transmitter Rc is the specific encoded infra-red remote control control signal of the pulse of transmission frequency 38kHz (pulse) shape for example, for example, be provided with: full luminous point button (button), light modulation point button, night-light button and light-off button etc.By with this infra-red remote control transmitter Rc towards auxiliary component unit 9, be that the infrared remote control signal acceptance division operates, can control the luminance of the light-emitting component 51 in the light source portion 5, can carry out namely that full luminous point lamp, light modulation are lit a lamp, the control of light-off etc.

In the lighting device that consists of in this way, as Fig. 2 and Fig. 5 typically shown in, be the rear side that is configured in LGP 6 as the support underframe 7 of radiating component performance function, and spiral shell is solid and be installed on a plurality of protruding 83 of body frame 8.Under this state, the upper surface formation face of the installing plate 53 in the installation sheet 72 of support underframe 7 and the light source portion 5 contacts and thermal.Therefore, installation sheet 72 becomes the heat joining part of light source portion 5 and support underframe 7.

And as shown in Figure 5, the periphery edge of the front surface side of LGP 6 is: the skewed section by the diapire 82 in the body frame 8 is supported.On the other hand, as mentioned above, be equipped with support underframe 7 in the rear side of LGP 6, LGP 6 is to be disposed with the mode of skewed clamping of the diapire 82 of body frame 8 by support underframe 7.Under this state, the light-incident end 61 of LGP 6 is to arrange opposite to each other with light-emitting component 51, is incident to this light-incident end 61 from the light of light-emitting component 51 outgoing.

Next, with reference to Fig. 2 and Fig. 3, Fig. 6 to Fig. 8, illustrate that the lighting device that consists of in the above described manner is installed on the erection sequence of ceiling surface C.

At first, as shown in Figure 3, be provided with ceiling lamp holder main body Cb at ceiling surface C.And adapter A electrically and be connected mechanically to this ceiling lamp holder main body Cb.

Under this state, as shown in Figure 6, installation component 1 side is installed on adapter A.Particularly, make on the one hand the snap openings 41 alignment adapter A as the adapter guide portion of installation portion 4 in the installation component 1, on the one hand from the below with pushing away on hand installation component 1, until the holding section A1 of adapter A positively is sticked in till the snap openings 41 of adapter guide portion, thereby carry out fitting operation.Under this state, will be connected in from the power connector Cn4 that adapter A derives the electric connector Cn1 that uses that is subjected to of ignition device 3.

Next, at this installation component 1 light source portion body 2 sides are installed.As shown in Figure 7, make the engaging of the key shape of installation component 1 accept the connecting hole 85a that accessory 12 is inserted in the engaging accessory 85 that leads to body frame 8, to hook and support clamping close accessory 85.Subsequently, will be connected with connector Cn3 with the electricity that is subjected to of deriving from light source portion 5 with connector Cn2 from the power supply that ignition device 3 is derived.At this moment, sagging towards the below because of deadweight with connector Cn2 from the power supply that ignition device 3 is derived as shown in Figure 6, therefore this power supply becomes easy with the electricity that is subjected to of deriving from light source portion 5 with the operation that is connected of connector Cn3 with connector Cn2.

Then, as shown in Figure 8, rotate light source portion body 2 take engaging accessory 85 sides as fulcrum, stopped up in the mode of the front surface side that covers installation component 1.Under this state, rotate the engaging accessory 86 that is supported by body frame 8, holding section 86a is attended by elasticity and be sticked in towards the outstanding engaging of rear side with the adhesion of regulation and accept accessory 13.This state is installation state (with reference to Fig. 2).

Under the installment state of lighting device, adapter A is inserted the opening 11 of logical installation component 1, make the holding section A1 of adapter A be sticked in the snap openings 41 of adapter guide portion, be located at the pad P generation strain of installation component 1 rear side, thereby be situated between between rear side and ceiling surface C at installation component 1 with compressive state.Therefore, lighting device firmly and securely is sticked in adapter A, thereby stably keeps installment state.

And, in dismounting during lighting device, roughly, rotate the engaging accessory 86 that supported by body frame 8 to remove and engage the engaging of accepting accessory 13, dismantle light source portion body 2 from installation component 1, the front surface side of installation component 1 is opened.Then, the upper set action bars of adapter A is operated, with the engaging of the holding section A1 that removes adapter A, thus detachable installation component 1.

Like this, light source portion body 2 can open and close and releasably be installed on the front surface side of installation component 1.

Under the installment state of aforesaid lighting device, ignition device 3 is provided in installation component 1 side.Therefore, the weight that is incorporated into light source portion body 2 sides of installation component 1 is alleviated, to the engaging accessory 85 that consists of clamping close device, 86 and engaging accept the heavy burden that

accessory

12,13 applies and alleviated, thereby become favourable in intensity.

And the electricity that is subjected to set in the ignition device 3 is positioned at all sides with connector Cn1, and power supply is positioned at outer circumferential side with connector Cn2, be positioned near adapter A part with connector Cn1 by electricity, and power supply is positioned near light source portion 5 parts with connector Cn2.

Therefore, each distance shortens, and can shorten as distribution to connect wire L1 or the L3 that uses member, and the connection operation becomes easy.And, it is to be provided in that the distribution of these connectors etc. connects with member: accessory 12 sides are accepted in the engaging accessory 85 and the engaging that become the rotating fulcrum of light source portion body 2, thus, fastening with the pass of the rotation action of the light source portion body 2 of realizing by clamping close device, also can shorten wire L1 or L3 (with reference to Fig. 7).

In addition, wire L1 and wire L3 also can only arrange one, and another one is only arranged connector.For example, also wire L3 can be set, be subjected to electricity connector Cn3 and on the substrate 52 of light source portion 5, directly install.

Under the installment state of lighting device, for example, as operation infra-red remote control transmitter Rc and during to ignition device 3 supply capability, via 51 energisings of 52 pairs of light-emitting components of substrate, each light-emitting component 51 is by ignition device 3 control of lighting a lamp.Be incident to the light-incident end 61 of LGP 6 from the light of light-emitting component 51 outgoing, the light of this incident extends to whole LGP 6 in LGP 6 interior generation total reflections, and by the dot pattern that comprises pip that is formed on rear side or reflective sheet reflection and diffusion, thereby face side is radiated the light that homogenizes in the past.

At this moment, LGP 6 is: installation portion 4 is included and cover the front surface side of installation component 1, therefore can not produce at the central portion of LGP 6 dark section, namely, can make the brightness uniformity of light-emitting area, can realize good luminous intensity distribution state, and can improve brightness impression.

And the heat that produces from each light-emitting component 51 is: conduct to installing plate 53 from substrate 52 rear side, and then conduct to support underframe 7, thereby utilize the large tracts of land of support underframe 7 effectively to dispel the heat.

As mentioned above, according to present embodiment, can provide a kind of lighting device, can not produce at the central portion of LGP 6 dark section, can make the brightness uniformity of light-emitting area, to improve brightness impression.

In addition, the utility model is not limited to the structure of above-mentioned embodiment, can carry out various distortion in the scope of the purport that does not break away from utility model.And above-mentioned embodiment is to point out as an example, is not intended to limit the scope of utility model.

For example, in the above-described embodiment, the situation that ignition device is equipped on the installation component side is illustrated, but ignition device might as well be equipped on the light source portion base side.

And as clamping close device, also applicable hinge (hinge) structure can be opened and closed the light source portion body to be installed on the front surface side of installation component.And then, the mode of fixture fittings for example also can be set on the both sides in opposite directions of body frame, the light source portion body can be loaded and unloaded with respect to installation component.At this moment, the front surface side of installation component also can open and close by the light source portion body.Like this, the applicable various structures of clamping close device are not particularly limited.

And, in the above-described embodiment, use is formed the LGP of quadrangle shape, and light-emitting area forms roughly, and the situation of quadrangle shape is illustrated, but such as also making LGP form hexagon or octagon etc., and dispose light-emitting component corresponding to their each limit, and the body shaped as frame is become toroidal, and the mode of exposing with the rounded shape of the light-emitting area of LGP and form the light-emitting area of toroidal.

Claims

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

Installation component has at central portion: the installation portion that is used for being installed on the device installed surface; And

The light source portion body, possess: LGP and light-emitting component, described light source portion body is for can openedly and closedly being installed on the front surface side of described installation component, described LGP has light-incident end at peripheral part, and with described installation portion is included in interior and cover described installation component the front surface side mode and set, described light-emitting component be incident to emergent light described LGP described light-incident end mode and set.

2. lighting device according to claim 1 is characterized in that, in described installation component side, is equipped with: to described light-emitting component light a lamp control ignition device.

3. lighting device according to claim 2 is characterized in that, the outer circumferential side at described ignition device is provided with: the distribution that is connected with described light-emitting component connects uses member.