CN209744109U - Light-emitting device and lamp - Google Patents

Abstract

the utility model provides a light-emitting device and a lamp, which relate to the technical field of illumination and comprise a laser emission source, a focusing unit and a wavelength conversion unit; wherein, the laser emission source is arranged at one side of the focusing unit; the wavelength conversion unit is arranged on the other side of the focusing unit; the laser emission source emits laser; laser emitted by the laser emission source is converged by the focusing unit to obtain a laser beam, and the laser beam is incident on the wavelength conversion unit; the wavelength conversion unit absorbs the laser beam and emits the received laser; wherein, the wavelength of the laser emitted by the laser emission source is different from that of the laser received by the laser. The utility model provides a light emitting device uses laser as the light source, and laser process focus unit and wavelength conversion unit make the light emitting device outgoing be used for the illumination receive the laser, receive the luminous power density of laser to be greater than the LED light source, so this light emitting device's illuminance is higher, has alleviated the technical problem that light emitting device illuminance among the prior art is low.

Description

light-emitting device and lamp

Technical Field

The utility model belongs to the technical field of the technique of illumination and specifically relates to a light emitting device and lamps and lanterns are related to.

Background

at present, the semiconductor technology is rapidly developed, and an LED (Light Emitting Diode) Light source has basically replaced a traditional incandescent lamp due to its advantages of environmental protection, energy saving, low cost, and the like, and becomes a mainstream lighting source. However, for some application scenes requiring long-range radiation, such as automobile headlights and stage lighting, the LED light source cannot meet the illumination requirement.

In summary, the light emitting device in the prior art has a technical problem of low illumination.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a light emitting device and lamps and lanterns to alleviate the technical problem that the illuminance is low that light emitting device among the prior art exists.

In a first aspect, an embodiment of the present invention provides a light emitting device, including: the device comprises a laser emission source, a focusing unit and a wavelength conversion unit;

Wherein the laser emission source is disposed at one side of the focusing unit; the wavelength conversion unit is arranged on the other side of the focusing unit;

The laser emission source emits laser;

The laser emitted by the laser emission source is converged by the focusing unit to obtain a laser beam, and the laser beam is incident on the wavelength conversion unit;

the wavelength conversion unit absorbs the laser beam and emits a received laser;

wherein the stimulated light and the laser emitted by the laser emission source have different wavelengths.

In an alternative embodiment, the wavelength conversion unit comprises: the fluorescent lamp comprises a transparent heat conduction substrate, a filter coating, a fluorescent layer and a heat dissipation device, wherein the lower surface of the transparent heat conduction substrate is a diffuse reflection surface, and the upper surface of the transparent heat conduction substrate is plated with the filter coating;

The transparent heat conducting substrate is arranged on one side close to the focusing unit; the fluorescent layer is arranged on the upper surface of the filter membrane, and the heat dissipation device is arranged in a manner of being tightly attached to the transparent heat conduction substrate;

the transparent heat conducting substrate absorbs the laser beam and emits diffused laser;

The diffused laser passes through the filter film, is absorbed by the fluorescent layer and emits a received laser;

the filter film cuts off the laser emitted downwards by the fluorescent layer;

And the heat dissipation device is used for conducting heat dissipation on the heat generated by the transparent heat conduction substrate.

in an alternative embodiment, the focusing unit includes: plano-convex or biconvex.

In an alternative embodiment, the transparent thermally conductive substrate comprises: transparent sapphire.

In an alternative embodiment, the fluorescent layer comprises: fluorescent ceramic plate.

in an alternative embodiment, the thickness of the phosphor layer is less than 0.15 mm.

In an alternative embodiment, the material of the heat sink includes copper or aluminum.

in a second aspect, an embodiment of the present invention provides a lamp, where the lamp includes the light emitting device of any one of the foregoing embodiments, and further includes: the heat dissipation device comprises a heat dissipation base, a fan, an emergent unit and a shell;

One side of the heat dissipation base is connected with a laser emission source of the light-emitting device; the fan is arranged on the other side of the heat dissipation base; the emitting unit is arranged at the stimulated light emitting end of the light emitting device; the light-emitting device is arranged in the shell;

And the emergent unit is used for converging the received laser emitted by the light-emitting device to obtain an emergent laser beam.

In an alternative embodiment, the heat dissipation base includes: copper relieved tooth fins or aluminum relieved tooth fins.

In an alternative embodiment, the exit unit comprises: plano-convex or biconvex.

The utility model provides a light-emitting device, include: the device comprises a laser emission source, a focusing unit and a wavelength conversion unit; wherein, the laser emission source is arranged at one side of the focusing unit; the wavelength conversion unit is arranged on the other side of the focusing unit; the laser emission source emits laser; laser emitted by the laser emission source is converged by the focusing unit to obtain a laser beam, and the laser beam is incident on the wavelength conversion unit; the wavelength conversion unit absorbs the laser beam and emits the received laser; wherein, the wavelength of the laser emitted by the laser emission source is different from that of the laser received by the laser.

LED illuminator among the prior art, because its self inherent characteristic, to some application scenes that need far-reaching, for example car headlight, stage lighting illumination etc. the LED light source can not satisfy the illuminance demand, compares with illuminator among the prior art, the utility model provides a illuminator uses laser as the light source, and laser process focus unit and wavelength conversion unit make illuminator outgoing be used for the illumination receive laser, receive the luminous power density of laser and be greater than the LED light source, so this illuminator's illuminance is higher, has alleviated the technical problem that illuminator illuminance among the prior art is low.

drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a light emitting device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a wavelength conversion unit according to an embodiment of the present invention;

Fig. 3 is a schematic structural diagram of an alternative light-emitting device according to an embodiment of the present invention;

Fig. 4 is a schematic structural view of a lamp provided in an embodiment of the present invention.

Icon: 100-a laser emission source; 200-a focusing unit; 300-a wavelength conversion unit; 400-heat dissipation base; 500-a fan; 600-an exit unit; 700-a housing; 301-transparent heat conducting substrate; 302-a filter film; 303-a fluorescent layer; 304-Heat sink.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

example one

Fig. 1 is a schematic structural diagram of a light emitting device according to the present invention, as shown in fig. 1, the light emitting device includes: a laser emission source 100, a focusing unit 200, and a wavelength conversion unit 300;

Wherein, the laser emission source 100 is disposed at one side of the focusing unit 200; the wavelength conversion unit 300 is disposed at the other side of the focusing unit 200;

The laser emission source 100 emits laser light;

The laser emitted by the laser emission source 100 is converged by the focusing unit 200 to obtain a laser beam, and the laser beam is incident on the wavelength conversion unit 300;

The wavelength conversion unit 300 absorbs the laser beam and emits the received laser;

Wherein the wavelength of the received laser light is different from that of the laser light emitted from the laser emission source 100.

The utility model discloses in, the laser that adopts laser emission source 100 transmission is as the light source, and generally, laser semiconductor is littleer than LED's volume, and luminous power density is higher, so more be fit for making the less lighting apparatus of volume, simultaneously, because laser has the characteristics of collimation nature, also be fit for the application scene of long shot more, for example car long shot lamp, stage lighting lamp etc..

The laser of laser emission source 100 transmission is penetrated into focusing unit 200, focusing unit 200 can assemble the laser of incidenting, obtains the better laser beam of directionality, and laser beam incides in wavelength conversion unit 300 simultaneously, and wavelength conversion unit 300 can carry out the conversion of wavelength to the laser beam of incidenting, and the outgoing is used for receiving laser of illumination, will carry out detailed introduction to wavelength conversion unit 300's specific structure hereafter, in the utility model discloses in, the distance between laser emission source 100 and the focusing unit 200 is preferred to be set up to within 1 centimetre, and the distance between focusing unit 200 and the wavelength conversion unit 300 is also preferred to be set up to within 1 centimetre, the embodiment of the utility model provides a do not carry out specific restriction to these two distances, the user can carry out the modification of adaptability according to actual demand.

compared with the light emitting device in the prior art, the utility model provides a light emitting device uses laser as the light source, and laser process focus unit 200 and wavelength conversion unit 300 make the light emitting device outgoing be used for the illumination receive the laser, receive the luminous power density of laser to be greater than the LED light source, so this light emitting device's illuminance is higher, has alleviated the technical problem that the light emitting device illuminance among the prior art is low.

The above description has been made briefly for the composition structure of the present invention, and the wavelength conversion unit 300 therein will be described in detail below.

in an alternative embodiment, as shown in fig. 2, the wavelength conversion unit 300 includes: the light-emitting diode comprises a transparent heat-conducting substrate 301, a filter film 302, a fluorescent layer 303 and a heat dissipation device 304, wherein the lower surface of the transparent heat-conducting substrate 301 is a diffuse reflection surface, and the filter film 302 is plated on the upper surface of the transparent heat-conducting substrate 301;

a transparent heat conductive substrate 301 is disposed at a side close to the focusing unit 200; the fluorescent layer 303 is arranged on the upper surface of the filter film 302, and the heat dissipation device 304 is arranged close to the transparent heat conduction substrate 301;

the transparent heat conducting substrate 301 absorbs the laser beam and emits diffused laser;

the diffused laser passes through the filter film 302, is absorbed by the fluorescent layer 303 and emits a received laser;

The filter film 302 cuts off the laser beam emitted downwards by the fluorescent layer 303;

And a heat sink 304 for conducting and dissipating heat generated by the transparent heat conducting substrate 301.

Specifically, the wavelength conversion unit 300 of the present invention includes: the transparent heat conducting substrate 301 is arranged on one side close to the focusing unit 200, so that a laser beam emitted by the focusing unit 200 can be incident into the transparent heat conducting substrate 301, and the fluorescent layer is prevented from being burnt due to overhigh laser power density (heat), so that the incident side (lower surface) of the laser beam of the transparent heat conducting substrate 301 is a diffuse reflection surface which can be obtained through chemical etching or physical grinding, and the processed transparent heat conducting substrate 301 can properly diffuse a laser spot with a small incident focus, so that the safety problem caused by the fact that the fluorescent layer is burnt and the laser beam directly transmits through the transparent heat conducting substrate can be well avoided.

As can be seen from the above composition structure of the wavelength conversion unit 300, the upper surface of the transparent heat conducting substrate 301 is plated with the filter film 302, and the upper surface of the filter film 302 is further provided with the fluorescent layer 303, the filter film 302 is provided for transmitting laser and stopping the received laser light, since the lower surface of the transparent heat conducting substrate 301 is incident with the laser beam, and the diffused laser light is emitted from the upper surface of the transparent heat conducting substrate 301 through proper diffusion of the diffuse reflection surface, since the filter film 302 can transmit the laser light, the diffused laser light can pass through the filter film 302 and be absorbed by the fluorescent layer 303, and the fluorescent layer 303 is excited by the diffused laser light and emits the received laser light, and for the received laser light emitted downward by the fluorescent layer 303, under the effect of the filter film 302 stopping the received laser light, no received laser light can be transmitted into the transparent heat conducting substrate 301, so that the received laser light generated by the fluorescent layer 303 is emitted upward, the wavelength conversion unit 300 has a structure that can improve the brightness of the excited light generated by the fluorescent layer 303.

the fluorescent layer 303 generates a large amount of heat when excited by the diffused laser to generate the excited light, and the heat is diffused only by the transparent heat conducting substrate 301, so that it is difficult to ensure the diffusion speed and the diffusion effect of the heat, and therefore, it is necessary to arrange the heat dissipation device 304 close to the transparent heat conducting substrate 301, and the heat dissipation device 304 can conduct and dissipate the heat generated by the transparent heat conducting substrate 301, thereby ensuring the service life of the fluorescent layer 303.

Preferably, the laser emission source 100 is a blue laser emitter, the blue laser excites the yellow fluorescent layer 303, the generated yellow fluorescent light is mixed with the blue light to form white light, and the obtained white light can be used for illumination.

Among the prior art, in order to suitably diffuse laser beam, often need increase the scattering glass piece in transparent heat conduction substrate 301's laser incidence side, but can increase illuminator's the structural design degree of difficulty and cost like this, so the utility model discloses in, directly carry out chemical etching or physics grinding to transparent heat conduction substrate 301's lower surface and handle, and then obtain the diffuse reflection surface that can play the diffusion to laser beam, simultaneously, directly plate one deck filter coating 302 at transparent heat conduction substrate 301's upper surface again, the component structure that increases laser filter is compared in this kind of design, can optimize illuminator's overall structure, can reduce illuminator's manufacturing cost again.

the above description describes the structure of the wavelength conversion unit 300 in detail, and fig. 3 also provides a schematic diagram of an alternative light emitting device, and some alternative embodiments of the structure of the light emitting device are described below.

In an alternative embodiment, the focusing unit 200 includes: plano-convex or biconvex.

Specifically, the utility model discloses well focus unit 200's primary action is just assembling the laser of laser emission source 100 transmission, so focus unit 200 can be plano-convex mirror, biconvex mirror or other types can assemble the lens of laser, the utility model discloses do not carry out concrete restriction to focus unit 200's structure, the user can select suitable lens to realize the function of assembling of laser according to the actual demand.

In an alternative embodiment, the transparent thermally conductive substrate 301 includes: transparent sapphire.

Specifically, the utility model discloses a light emitting device, in order to make the heat that fluorescent layer 303 produced carry out quick conduction, so transparent heat conduction substrate 301's coefficient of heat conduction is just high, and transparent heat conduction substrate 301 can select transparent heat conduction materials such as transparent carborundum or transparent sapphire, because transparent sapphire's composition is alumina, and its coefficient of heat conduction is 25 watts/meter degree, and transparent sapphire's production technology is mature, and other materials are also lower compared to the cost, so, the utility model discloses preferably use transparent sapphire as transparent heat conduction substrate 301, the user also can change transparent heat conduction substrate 301's material as required, the utility model discloses do not carry out concrete restriction to transparent heat conduction substrate 301's material.

In an alternative embodiment, the fluorescent layer 303 comprises: fluorescent ceramic plate.

Specifically, the fluorescent layer 303 for generating the stimulated light may be a fluorescent ceramic sheet, and the fluorescent ceramic sheet is bonded to the upper surface of the filter film 302 by using a high-temperature-resistant inorganic adhesive, or the fluorescent powder and the high-temperature-resistant inorganic adhesive are mixed and then coated on the filter film 302, so that a user can select the fluorescent ceramic sheet according to actual conditions.

In an alternative embodiment, the thickness of the fluorescent layer 303 is less than 0.15 mm.

Specifically, in the embodiment of the present invention, the thickness of the fluorescent layer 303 in the wavelength conversion unit 300 should be less than 0.15mm, and meanwhile, in practical applications, different thicknesses of the fluorescent layer 303 should be selected according to different powers of the used laser emission source 100 to meet the brightness requirement of the product.

in an alternative embodiment, the material of the heat sink 304 includes copper or aluminum.

specifically, the heat dissipation device 304 may be made of copper, aluminum, or other high thermal conductivity metal material, and in the product design, the area of the heat dissipation device 304 may be increased according to the actual internal space condition, and a user may use a high thermal conductivity adhesive to bond the heat dissipation device 304 and the transparent thermal conductive substrate 301.

To sum up, the utility model provides a light-emitting device has following advantage:

1. The laser is used as the light source, and the optical power density of the laser is higher, so the light-emitting device of the utility model can meet the illumination requirement of long-range emission;

2. The volume of the laser semiconductor is smaller than that of the LED, so that the volume of the light-emitting device of the utility model can be smaller than that of the traditional LED light-emitting device;

3. the filter coating 302 is coated on the upper surface of the transparent heat conducting substrate 301, so that the laser light generated by the fluorescent layer 303 is emitted upwards, and the brightness of the laser light generated by the fluorescent layer 303 is effectively improved;

4. the lower surface of the transparent heat conducting substrate 301 is directly subjected to chemical etching or physical grinding treatment to obtain a diffuse reflection surface, and the upper surface of the transparent heat conducting substrate 301 is directly plated with the filter film 302, so that the structural design of the light-emitting device can be optimized, and the production cost can be reduced;

5. The heat dissipation device 304 is arranged close to the transparent heat conducting substrate 301, so that heat of the transparent heat conducting substrate 301 can be quickly conducted, and the service life of the fluorescent layer 303 is ensured.

Example two

referring to fig. 4, a lamp including the light emitting device in the first embodiment further includes: a heat-dissipating base 400, a fan 500, an exit unit 600, and a case 700;

one side of the heat dissipation base 400 is connected with the laser emission source 100 of the light emitting device; the fan 500 is disposed at the other side of the heat dissipation base 400; the emitting unit 600 is disposed at an excited light emitting end of the light emitting device; the light emitting device is disposed in the housing 700;

and an emitting unit 600 configured to converge the received laser light emitted by the light emitting device to obtain an emitted laser beam.

The utility model also provides a lamps and lanterns including above-mentioned illuminator, this lamps and lanterns still include: heat dissipation base 400, fan 500, emergent unit 600 and casing 700, casing 700 can comprise one or more structure, illuminator sets up in above-mentioned casing 700, then be fixed in on heat dissipation base 400 casing 700, it is specific, one side of heat dissipation base 400 is connected with illuminator's laser emission source 100, be used for dispelling the heat for laser emission source 100, heat dissipation base 400's opposite side still sets up fan 500, fan 500 can utilize the principle of air convection with the heat that casing 700 conducts to heat dissipation base 400, carry out rapid cooling for heat dissipation base 400, and then guarantee laser emission source 100's life, product volume can be reduced to this kind of initiative and passive heat dissipation combination technique, more do benefit to and use.

the exit unit 600 sets up in illuminator's stimulated light emergence end for assemble receiving laser with illuminator transmission, obtain emergent laser beam, emergent laser beam's diffusion angle can change according to the change of exit unit 600's optical design, and the user can design according to the actual demand, and above-mentioned casing 700 setting can be hugged closely to exit unit 600, also can utilize the support fixed between exit unit 600 and the casing 700, keeps the certain distance, the utility model discloses do not specifically prescribe a limit to the relation of connection of the two, the user can set up according to the demand.

In an alternative embodiment, the heat sink base 400 includes: copper relieved tooth fins or aluminum relieved tooth fins.

in order to make the lamp more compact and convenient for application, the heat dissipation base 400 may be preferably a copper or aluminum relief fin, so as to increase the heat dissipation surface area of the laser emission source 100 on the premise of reasonable volume.

In an alternative embodiment, the exit unit 600 includes: plano-convex or biconvex.

specifically, the main effect of the exit unit 600 in the lamp is to assemble the laser emitted by the light emitting device, so the exit unit 600 can be a flat convex lens, a double convex lens or a lens with which other types can assemble the laser, the utility model discloses do not specifically restrict the structure of the exit unit 600, the user can select a suitable lens according to actual needs to realize the function of assembling of laser.

in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

in the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A light-emitting device, comprising: the device comprises a laser emission source, a focusing unit and a wavelength conversion unit;

Wherein the laser emission source is disposed at one side of the focusing unit; the wavelength conversion unit is arranged on the other side of the focusing unit;

the laser emission source emits laser;

The laser emitted by the laser emission source is converged by the focusing unit to obtain a laser beam, and the laser beam is incident on the wavelength conversion unit;

The wavelength conversion unit absorbs the laser beam and emits a received laser;

wherein the stimulated light and the laser emitted by the laser emission source have different wavelengths.

2. the light-emitting device according to claim 1, wherein the wavelength conversion unit includes: the fluorescent lamp comprises a transparent heat conduction substrate, a filter coating, a fluorescent layer and a heat dissipation device, wherein the lower surface of the transparent heat conduction substrate is a diffuse reflection surface, and the upper surface of the transparent heat conduction substrate is plated with the filter coating;

the transparent heat conducting substrate is arranged on one side close to the focusing unit; the fluorescent layer is arranged on the upper surface of the filter membrane, and the heat dissipation device is arranged in a manner of being tightly attached to the transparent heat conduction substrate;

the transparent heat conducting substrate absorbs the laser beam and emits diffused laser;

The diffused laser passes through the filter film, is absorbed by the fluorescent layer and emits a received laser;

The filter film cuts off the laser emitted downwards by the fluorescent layer;

and the heat dissipation device is used for conducting heat dissipation on the heat generated by the transparent heat conduction substrate.

3. The light-emitting device according to claim 1, wherein the focusing unit includes: plano-convex or biconvex.

4. The light-emitting device according to claim 2, wherein the transparent thermally conductive substrate comprises: transparent sapphire.

5. The light-emitting device according to claim 2, wherein the phosphor layer comprises: fluorescent ceramic plate.

6. A light emitting device according to claim 2, wherein the thickness of the phosphor layer is less than 0.15 mm.

7. The lighting device as claimed in claim 2, wherein the heat sink comprises copper or aluminum.

8. a luminaire comprising the light-emitting device of any one of claims 1-7, and further comprising: the heat dissipation device comprises a heat dissipation base, a fan, an emergent unit and a shell;

One side of the heat dissipation base is connected with a laser emission source of the light-emitting device; the fan is arranged on the other side of the heat dissipation base; the emitting unit is arranged at the stimulated light emitting end of the light emitting device; the light-emitting device is arranged in the shell;

and the emergent unit is used for converging the received laser emitted by the light-emitting device to obtain an emergent laser beam.

9. The luminaire of claim 8, wherein the heat sink base comprises: copper relieved tooth fins or aluminum relieved tooth fins.

10. the light fixture of claim 8 wherein the exit unit comprises: plano-convex or biconvex.