CN204345367U - Lighting device - Google Patents

Abstract

The utility model provides a kind of and can replace the existing halogen bulb with speculum and can realize the lighting device of the simplification of structure.Lighting device involved by embodiment possesses: reflection face and light emitting module, reflection face has the reflecting surface of concave shape, light emitting module at least has the side being respectively arranged with light-emitting component, covering the sealing of described light-emitting component of more than 3, and stereoscopic configurations is in the inside of described reflection face.Further, the light-emitting zone comprising described sealing is arranged at the space between the first end of described reflection face and the second end opposed with described first end.

Description

Lighting device

Technical field

Embodiment of the present utility model relates to a kind of lighting device.

Background technology

The halogen bulb had with speculum is used in Down lamp or spotlight.

Although halogen bulb is little and efficiency is high, from power saving and long-life viewpoint, still replaced by the lighting device possessing light emitting diode gradually.

In this lighting device, on substrate, the multiple light emitting diode of planar configuration is as light source.

But if the multiple light emitting diode of planar configuration, then compared with the existing halogen bulb with speculum, the control of light distribution angle becomes difficulty.

Therefore, need to arrange the optical elements such as lens to expand light distribution angle.

But, if arrange optical element, the increase of the complicated of structure and cost can be caused.

Patent document 1: Japanese Unexamined Patent Publication 2011-175978 publication.

Summary of the invention

Problem to be solved in the utility model is to provide a kind of and can replaces the existing halogen bulb with speculum and can realize the lighting device of the simplification of structure.

Lighting device involved by embodiment possesses reflection face and light emitting module, described reflection face has concave shape reflecting surface, described light emitting module at least has the side being respectively arranged with light-emitting component, covering the sealing of described light-emitting component of more than 3, and described light emitting module stereoscopic configurations is in the inside of described reflection face.

Further, the light-emitting zone comprising described sealing is arranged at the space between the first end of described reflection face and the second end opposed with described first end.

Lighting device involved by embodiment has light emitting module and reflecting part, described light emitting module at least has the side being respectively arranged with light-emitting component, covering the sealing of described light-emitting component of more than 3, described reflecting part has the reflecting surface of the surrounding being arranged on described light emitting module, wherein, described light emitting module stereoscopic configurations is in the inside of reflecting part.

According to embodiment of the present utility model, a kind of replaceable existing halogen bulb with speculum can be provided and the lighting device of the simplification of structure can be realized.

Detailed description of the invention

The lighting device of the utility model involved by embodiment possesses: reflection face, has concave shape reflecting surface; Light emitting module, at least has more than 3 sides being respectively arranged with light-emitting component, covering the sealing of described light-emitting component, and stereoscopic configurations is in the inside of described reflection face.

The light-emitting zone comprising described sealing is arranged at the described space reflected between the first end of face and the second end opposed with described first end.

According to this lighting device, the halogen bulb with speculum can be replaced and the simplification of structure can be realized.

Further, according to this structure, can suppress to produce dark portion in projected light, thus be easy to the shape of projected light to be set to circle.

Further, the center of described light-emitting zone can be made to be arranged at the focal position of described reflection face.

According to this structure, the easily satisfied optical characteristics had with the halogen bulb of speculum.

Further, when the described first end from described reflection face is set to X to the distance of the described center of described light-emitting zone, by when being set to L from described first end to the distance of described the second end, can meets 0.70L≤X≤0.89L.

If the optical characteristics required in the halogen bulb of subsidiary speculum by this way, can be met.

Further, the full-size of described light-emitting zone can be set to more than 2mm, below 10mm.

If by this way, be more prone to meet the optical characteristics required in the halogen bulb of subsidiary speculum.

Below, with reference to accompanying drawing illustrated embodiment.In addition, in the drawings and in which, identical symbol is marked to identical structural element, and suitable detailed.

Fig. 1 is the partial sectional view of the lighting device 1 schematically illustrated involved by present embodiment.

Fig. 2 is the stereogram of the lighting device 1 schematically illustrated involved by present embodiment.

In addition, in fig. 2, for the ease of observing, cover 6 is eliminated.

As shown in Figure 1 and Figure 2, lighting device 1 possesses: main part 2, support 3, light emitting module 4, heat radiation adhesive sheet 8, reflecting part 5, cover 6, lamp holder 7.

Main part 2 has accommodation section 2a and connecting portion 2b.

Accommodation section 2a is cylindrical shape such as.

The lamp circuit supplying electric power to light emitting module 4 is accommodated in the inside of accommodation section 2a.Further, the light adjusting circuit for carrying out light modulation to light emitting module 4 can also be held.

Connecting portion 2b be arranged on accommodation section 2a with the end of side opposite side being provided with reflecting part 5.Connecting portion 2b has the shape with step along with diminishing towards eyelet portion 7b sectional area.

Such as higher by thermal conductivity factor and the material with insulating properties of main part 2 is made.Main part 2 such as can be made up of pottery, high-termal conductivity resins etc. such as aluminium nitride (AlN).Further, main part 2 such as can also be made up of metals such as aluminium (Al), copper (Cu) and aluminium coppers, and arranges insulating barrier on surface.

Support 3 is in column, and the inside from accommodation section 2a towards the facial 5a of reflection is given prominence to.

Support 3 is such as held in accommodation section 2a.

The cross sectional shape in the direction orthogonal to the axial direction of support 3 can be polygonal.

In Fig. 1 and Fig. 2, support 3 is in corner column.But the shape of support 3 is not limited to corner column, such as, also can be other polygonal columns such as triangle column, five corner post shapes, hexagonal column.

Further, the shape of support 3 is not limited to straight cylinder, such as, can be set to pyramidal or pyramid mesa-shaped etc.

Now, owing to being provided with the installation portion 4a1 ~ 4a4 of light emitting module 4 in the side of support 3, therefore, if the quantity of side tails off, then produce dark portion in projected light.If produce dark portion in projected light, be then difficult to make the shape of projected light become circular.Therefore, preferred support 3 even light emitting module 4 at least there are 3 sides.On the other hand, the more many generations that more can suppress dark portion of the quantity due to side, are thus easy to make the shape of projected light become circular.But, if the quantity of side is too much, then reflecting part 5 even lighting device 1 become large, possibly cannot replace the existing halogen bulb with speculum.Therefore, it is possible to suitably determine the form of support 3 according to the purposes, size etc. of lighting device 1.

Support 3 can be made up the higher and material with the rigidity of a certain degree of thermal conductivity factor.Support 3 such as can be made up of metals etc. such as pottery, high-termal conductivity resin, aluminium (Al), copper (Cu), aluminium copper such as aluminium nitride.

Light emitting module 4 has: matrix 4a, light-emitting component 4b, sealing 4c.

Light emitting module 4 is arranged at the inside reflecting facial 5a, and the sealing 4c stereoscopic configurations of light-emitting component 4b and covering luminous element 4b.

Fig. 3 (a) is the schematic diagram of the installed surface side for illustrating the light emitting module 4 be installed on before support 3.

Fig. 3 (b) is the schematic diagram of the side contrary with installed surface side for illustrating the light emitting module 4 be installed on before support 3.

As shown in Fig. 3 (a), matrix 4a has: multiple installation portion 4a1 ~ 4a4, linking part 4a5.

The flat shape of multiple installation portion 4a1 ~ 4a4 such as can be set to rectangle.Multiple installation portion 4a1 ~ 4a4 is arranged at multiple sides of support 3 respectively.

The front surface of multiple installation portion 4a1 ~ 4a4 is provided with not shown Wiring pattern.Not shown Wiring pattern is provided with light-emitting component 4b.That is, in the present embodiment, COF (Chip On Film, covers brilliant film) mode light-emitting component 4b being directly installed on installation portion 4a1 ~ 4a4 is adopted.

In addition, also the light-emitting component 4b of surface installing type can be installed on installation portion 4a1 ~ 4a4.

Further, although exemplified with the situation of the shape that is arranged in a straight line by multiple light-emitting component 4b, what suitably can change light-emitting component 4b arranges form.

Not shown Wiring pattern such as can comprise aluminium (Al), tin (Sn), copper (Cu), nickel (Ni), palladium (Pd), gold (Au), silver (Ag) etc.

Not shown Wiring pattern such as can use galvanoplastic to be formed.

Light-emitting component 4b such as can use light emitting diode.

Light-emitting component 4b such as can be set to the chip that faces up (overlying electrode) or flip-chip (lower electrodes or top and bottom electrode).

The quantity being installed on the light-emitting component 4b of multiple installation portion 4a1 ~ 4a4 is respectively not particularly limited, and luminous intensity or size etc. according to light-emitting component 4b are at least provided with 1 light-emitting component 4b.Not shown Wiring pattern is electrically connected with lamp circuit via not shown distribution etc.

The flat shape of linking part 4a5 such as can be set to square.Linking part 4a5 is arranged at the end face of support 3.

The end of the side of multiple installation portion 4a1 ~ 4a4 is connected to multiple limits of linking part 4a5.

Screwed hole 4a6 is provided with near the end of the opposite side of multiple installation portion 4a1 ~ 4a4.

As shown in Fig. 3 (b), the surrounding edge of the linking part 4a5 with installed surface opposite side is provided with the groove 4a7 that cross section is V shape.

By arranging the groove 4a7 that cross section is V shape, when light emitting module 4 is installed on support 3, can with groove 4a7 for starting point carrys out bending installation portion 4a1 ~ 4a4.Therefore, the installation of light emitting module 4 is made to become easy.

Because matrix 4a has said structure, thus can for flat matrix 4a installing light emitting element 4b, sealing 4c is set.

Further, in the mode covering support 3, light emitting module 4 is installed, thus can by light-emitting component 4b and sealing 4c stereoscopic configurations.

In addition, although the flat shape of illustrative matrix 4a is crosswise in Fig. 3 (a) and Fig. 3 (b), this is not limited to.The quantity of the direction of illumination of the light that can irradiate according to the light-emitting component 4b from stereoscopic configurations, suitably changes the flat shape of matrix 4a.

Further, when the shape of support 3 be pyramidal or pyramid mesa-shaped etc., the installation portion with the shape corresponding with the side view of support 3 can be set to.

Matrix 4a such as can be formed by resins such as the metals such as aluminium or polyfurolresin, polyimides, PETG, PENs.

At this, in order to by light-emitting component 4b and sealing 4c stereoscopic configurations, need matrix 4a to be installed on support 3.Further, the light source used in lighting device 1 needs to realize spot light, and thus its light-emitting area diminishes.Therefore, the heat making to produce in light-emitting component 4b is needed to dispel the heat via support 3.

Now, in order to improve thermal diffusivity, preferably matrix 4a is close to support 3.

Generally comprise heat dissipating silicone grease etc. as cheap and that thermal diffusivity is higher material.But, heat dissipating silicone grease because of the volatilization of oil component cause through time aging, adhesive strength may be made to reduce or thermal diffusivity reduces.

Further, different from flat rigid substrates, matrix 4a bonding plane shape is not plane, and the reduction of thus small adhesive strength also may cause disengaging.Further, because the area of matrix 4a is less, the skin temperature Tc of light-emitting component 4b thus may be caused to uprise.

Therefore, in the present embodiment, following heat radiation adhesive sheet 8 is used.

Heat radiation adhesive sheet 8 is arranged between the matrix 4a of light emitting module 4 and support 3, for engaging matrix 4a and support 3.

Heat radiation adhesive sheet 8 such as can be set to and has: the base material comprising the band shape of PETG or propylene etc., the propylene adhesive linkage on two sides being arranged on base material.In addition, base material is not required, can be only to form heat radiation adhesive sheet 8 by propylene adhesive linkage yet.

The gauge of heat radiation adhesive sheet 8 such as can be set to more than 0.05mm and below 0.5mm.

The thermal conductivity factor of heat radiation adhesive sheet 8 can be set to 0.6W/m more than 〃 K and 1.5W/m below 〃 K.

Sealing 4c is arranged to covering luminous element 4b.

The shape of sealing 4c such as can be set to round point shape.Now, the diameter dimension of sealing 4c when overlooking can be set to about 3mm ~ 4mm.Further, the diameter dimension of sealing 4c when overlooking can be set to 5 times ~ about 8 times of the short side dimension of light-emitting component 4b.The diameter dimension of sealing 4c when overlooking can be set to 4 times ~ about 6 times of the long limit size of light-emitting component 4b.

Further, such as, although exemplified with the sealing 4c of round point shape, wire sealing 4c also can be set to.

When being set to wire sealing 4c, the length (length of long side direction) of sealing 4c when overlooking preferably is set to more than 2mm and below 10mm.Further, the length of sealing 4c when overlooking can be set to 3 times ~ about 20 times of the short side dimension of light-emitting component 4b.The length of sealing 4c when overlooking can be set to 2 times ~ about 14 times of the long limit size of light-emitting component 4b.The width dimensions of sealing 4c when overlooking can be set to 5 times ~ about 8 times of the short side dimension of light-emitting component 4b.The width dimensions of sealing 4c when overlooking can be set to 4 times ~ about 6 times of the long limit size of light-emitting component 4b.

Sealing 4c is made up of the material with light transmission.Sealing 4c such as can be made up of silicone resin etc.

Further, sealing 4c can comprise fluorophor.Fluorophor can be such as YAG system fluorophor (yttrium-aluminium-garnet system fluorophor).

Such as, when light-emitting component 4b is blue LED and fluorophor is YAG system fluorophor, the blue light of YAG system fluorophor emitted by light-emitting component 4b encourages, from the fluorescence that the fluorophor radiation of YAG system is yellow.Further, by the mixing of blue light and sodium yellow, white light is penetrated from sealing 4c.In addition, the kind of fluorophor or the kind of light-emitting component 4b are not limited to illustrate, and can suitably change the kind of fluorophor or the kind of light-emitting component 4b, thus obtain desired illuminant colour according to the purposes of lighting device 1 etc.

Further, sealing 4c can be arranged to have: comprise fluorophor and the ground floor of covering luminous element 4b, be arranged at the periphery of ground floor and the second layer not containing fluorophor.

Further, the component of the ring-type of surrounding light-emitting component 4b can also be set to replace the second layer.

In addition, in Fig. 3 (a), although exemplified with the sealing 4c of covering 1 light-emitting component 4b, the sealing 4c covering multiple light-emitting component 4b also can be arranged to.

Further, the quantity being arranged at the sealing 4c of each installation portion 4a1 ~ 4a4 such as can be set to 1 ~ about 4.But the quantity of sealing 4c is not limited thereto, suitably quantity can be changed.

Further, when being provided with multiple sealing 4c, the distance between the end of the sealing 4c at two ends is preferably more than 2mm and below 10mm.

That is, the full-size of light-emitting zone 14 described later is preferably more than 2mm and below 10mm.

Further, the flat shape of sealing 4c can also suitably be changed.

Reflecting part 5 has reflection facial 5a and neck 5b.

Reflect facial 5a and neck 5b to be such as made up of hard glass, heat resistance synthetic resin or metal etc.

Reflect facial 5a to have: the reflecting surface 5a1 with the concave shape in the paraboloid of revolution or ellipse of revolution face etc.The not shown reflectance coating of reflection light and heat is provided with at reflecting surface 5a1.Not shown reflectance coating is such as made up of chromium (Cr) etc.

The sectional area reflecting facial 5a diminishes along with towards neck 5b side.

What reflect facial 5a has opening with the end (openend 5a2 (being equivalent to an example of first end)) of neck 5b side opposite side, and the mode of closing openings is provided with cover 6.

Neck 5b is arranged at the end 5a3 (being equivalent to an example of the second end) reflecting facial 5a.Neck 5b cylindrically, and is wholely set with the facial 5a of reflection.The both ends open of neck 5b.Neck 5b is inserted in the inside of accommodation section 2a.Neck 5b is bonding with accommodation section 2a.

Light emitting module 4 is arranged at the inside reflecting facial 5a.

Cover 6 can be such as tabular.

Cover 6 can be made up of the material with light transmission.

Cover 6 can have the optical function such as lens or prism, also can not have optical function.

Cover 6 is not required, can arrange as required.

Lamp holder 7 has shell portion 7a and eyelet portion 7b.

Shell portion 7a is arranged at the outer peripheral face of connecting portion 2b.Shell portion 7a is the cylindrical body with ridge.

Eyelet portion 7b is arranged at the end of connecting portion 2b.

Shell portion 7a and eyelet portion 7b is made up of conductive materials such as metals.

Shell portion 7a and eyelet portion 7b is electrically connected with lamp circuit via not shown distribution etc.

Lamp holder 7 such as can be set to has the shape identical with E11 shape specified in JIS specification etc.But lamp holder 7 is not limited to illustrative shape, can suitably change.

Then, the position relationship of the facial 5a of reflection and light-emitting zone 14 is described.

Light-emitting zone 14 is the regions comprising sealing 4c.

Fig. 4 (a) represents that the sealing 4c of the round point shape of covering 1 light-emitting component 4b is provided with the situation of 1.

Fig. 4 (b) represents that the sealing 4c of the round point shape covering multiple light-emitting component 4b is provided with the situation of 1.

Fig. 4 (c) represents that the wire sealing 4c of covering 1 light-emitting component 4b is provided with the situation of 1.

Fig. 4 (d) represents that the wire sealing 4c covering multiple light-emitting component 4b is provided with the situation of 1.

As shown in Fig. 4 (a) ~ Fig. 4 (d), when being provided with 1 sealing 4c, shared by sealing 4c, region becomes light-emitting zone 14.

Further, the center 14a of light-emitting zone 14 is the center of sealing 4c.

Fig. 4 (e) ~ Fig. 4 (h) represents the situation being provided with multiple sealing 4c.

When being provided with multiple sealing 4c, the region comprising all sealing 4c becomes light-emitting zone 14.

Further, the center 14a of light-emitting zone 14 is the center in the region (light-emitting zone 14) comprising all sealing 4c.

As shown in Figure 1, light-emitting zone 14 is arranged on the inside reflecting facial 5a.

That is, light-emitting zone 14 is arranged at the space between openend 5a2 and the end 5a3 opposed with openend 5a2 reflecting facial 5a.

At this, the halogen bulb with speculum requires to have following optical characteristics.

Such as, the halogen bulb with speculum requires that the shape of projected light becomes circular.

Further, when the halogen bulb with speculum is middle angle gauge lattice, require that light distribution angle is within 20 ° (within ± 10%), maximum emission intensity is 4000cd (candela) left and right.

According to the opinion that inventor of the present utility model obtains, if meet 0.70L≤X≤0.89L from the distance X of openend 5a2 to the center 14a of light-emitting zone 14 of the facial 5a of reflection, even the optical characteristics then using the lighting device 1 of light-emitting component 4b also can meet the halogen bulb with speculum to have.

In addition, L is the distance of the openend 5a2 to end 5a3 from the facial 5a of reflection.

At this, when the diameter dimension of the openend 5a2 of the halogen bulb with speculum is about 70mm, distance L is about 34mm.

Now, in order to lighting device 1 being set to the halogen bulb can replaced with speculum, require that the appearance and size of the facial 5a of reflection is identical.

Therefore, in the reflection face 5a with this kind of size, distance X is 23.8mm≤X≤30.3mm.

Further, the center 14a of light-emitting zone 14 is preferably arranged on the focal position reflecting facial 5a.

According to said structure, the easily satisfied optical characteristics had with the halogen bulb of speculum.

Fig. 5 (a) ~ Fig. 5 (c), Fig. 6 (a) and Fig. 6 (b) are the photos for illustrating projected light.

Now, the photo of the projected light that Fig. 5 (a) is distance X when being 0.70L.

The photo of the projected light that Fig. 5 (b) is distance X when being 0.80L.

The photo of the projected light that Fig. 5 (c) is distance X when being 0.89L.

The photo of the projected light that Fig. 6 (a) is distance X when being 0.93L.

The photo of the projected light that Fig. 6 (b) is distance X when being 0.63L.

From Fig. 5 (a) ~ Fig. 5 (c), if 0.70L≤X≤0.89L, then the shape of projected light can be made roughly to become circular.Further, now light distribution angle is within 20 °, and maximum emission intensity is about 4000cd.

That is, if 0.70L≤X≤0.89L, then the optical characteristics that the halogen bulb with speculum has can be met.

On the other hand, as Fig. 6 (a) is known, if distance X is 0.93L, then uneven illumination will become large.That is, the shape deterioration of projected light, maximum emission intensity is lower than 4000cd.

Further, as Fig. 6 (b) is known, if distance X is 0.63L, then the shape deterioration of projected light.

Above, some embodiments of the present utility model are illustrated, but these embodiments just illustrate, do not limit the intention of utility model scope.These new embodiments can be implemented in other various mode, in the scope not departing from the utility model aim, can carry out various omission, displacement, change.These embodiments or its distortion all belong in scope of the present utility model or aim, and are also contained in the utility model and equivalent scope thereof recorded in technical scheme.Further, the respective embodiments described above can mutually combine and implement.

Accompanying drawing explanation

Fig. 1 is the partial sectional view of the lighting device 1 schematically illustrated involved by present embodiment.

Fig. 2 is the stereogram of the lighting device 1 schematically illustrated involved by present embodiment.

Fig. 3 (a) is the schematic diagram of the installed surface side for illustrating the light emitting module 4 be installed on before support 3.

Fig. 3 (b) is the schematic diagram of the side contrary with installed surface side for illustrating the light emitting module 4 be installed on before support 3.

Fig. 4 (a) represents that the round point shape sealing 4c of covering 1 light-emitting component 4b is provided with the situation of 1.

Fig. 4 (b) represents that the round point shape sealing 4c covering multiple light-emitting component 4b is provided with the situation of 1.

Fig. 4 (c) represents that the wire sealing 4c of covering 1 light-emitting component 4b is provided with the situation of 1.

Fig. 4 (d) represents that the wire sealing 4c covering multiple light-emitting component 4b is provided with the situation of 1.

Fig. 4 (e) ~ Fig. 4 (h) represents the situation being provided with multiple sealing 4c.

Fig. 5 (a) is the photo for illustrating projected light when distance X is 0.70L.

Fig. 5 (b) is the photo for illustrating projected light when distance X is 0.80L.

Fig. 5 (c) is the photo for illustrating projected light when distance X is 0.89L.

Fig. 6 (a) is the photo for illustrating projected light when distance X is 0.93L.

Fig. 6 (b) is the photo for illustrating projected light when distance X is 0.63L.

In figure: 1-lighting device; 2-main part; 2a-accommodation section; 3-support; 4-light emitting module; 4a-matrix; 4a1 ~ 4a4-installation portion; 4a5-linking part; 4a7-groove; 4b-light-emitting component; 4c-sealing; 5-reflecting part; 6-covers; 7-lamp holder; 8-dispels the heat adhesive sheet; 14-light-emitting zone; 14a-center.

Claims (5)

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

Reflection face and light emitting module,

Described reflection face has the reflecting surface of concave shape;

Described light emitting module at least has the side being respectively arranged with light-emitting component, covering the sealing of described light-emitting component of more than 3, and described light emitting module stereoscopic configurations is in the inside of described reflection face,

The light-emitting zone comprising described sealing is arranged at the space between the first end of described reflection face and the second end opposed with described first end.

2. lighting device according to claim 1, is characterized in that,

The center of described light-emitting zone is arranged at the focal position of described reflection face.

3. lighting device according to claim 1 and 2, is characterized in that,

Distance from the first end of described reflection face to the center of described light-emitting zone is set to X, by when being set to L from described first end to the distance of described the second end, meets 0.70L≤X≤0.89L.

4. lighting device according to claim 1 and 2, is characterized in that,

The full-size of described light-emitting zone is more than 2mm and below 10mm.

5. a lighting device, is characterized in that, has:

Light emitting module and reflecting part,

Described light emitting module at least has the side being respectively arranged with light-emitting component, covering the sealing of described light-emitting component of more than 3,

Described reflecting part has the reflecting surface of the surrounding being arranged on described light emitting module,

Wherein, described light emitting module stereoscopic configurations is in the inside of reflecting part.