CN212005327U - LED light source lamp group and projection lamp - Google Patents
LED light source lamp group and projection lamp Download PDFInfo
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- CN212005327U CN212005327U CN202020854022.5U CN202020854022U CN212005327U CN 212005327 U CN212005327 U CN 212005327U CN 202020854022 U CN202020854022 U CN 202020854022U CN 212005327 U CN212005327 U CN 212005327U
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Abstract
The utility model discloses a LED light source lamp group and a projection lamp, belonging to the technical field of projection, wherein the LED light source lamp group comprises a shell, a lamp bead plate, a plurality of LED lamp beads, a heat dissipation device, a condensing lens and a Fresnel lens; the lamp bead plate is made of heat conducting materials and is fixedly installed in the shell, and the LED lamp beads are installed on the front side of the lamp bead plate; the heat dissipation device is fixedly arranged on the back surface of the lamp bead plate; condensing lens and fresnel lens all install on the shell, and all are located the positive one side of lamp pearl board, and condensing lens is located between lamp pearl board and the fresnel lens, and condensing lens includes body and a plurality of spotlight arch, and spotlight arch and LED lamp pearl one-to-one and spotlight bellied top are provided with lamp pearl groove, and the bellied surface of spotlight is the aspheric surface arc so that the light that is located the LED lamp pearl of lamp pearl inslot and sends is reflected same direction by this surface. The utility model has the advantages of simple structure and reasonable design, can shine luminance and the quality of the light beam on the film by effectual improvement.
Description
Technical Field
The utility model relates to a projection equipment field, in particular to LED light source banks and projection lamp.
Background
The projection lamp, also known as a projector, is a device capable of projecting images or videos onto a curtain, and when the projection lamp is used for ordinary illumination, the projection lamp can be widely applied to outdoor lighting projects of lamps in families, offices, schools and entertainment places, and can also be used for creating effects of various lights and projecting required patterns.
A slide projector is one of the projectors, and is operated to irradiate light onto a film to project a picture pattern on the film and to continuously project the picture pattern on the film in the form of a slide.
However, in the existing slide projection lamp, a light source emits a large amount of heat after being used for a long time, and after the heat is accumulated, on one hand, the service life of an LED lamp bead is shortened, and on the other hand, a film is also accelerated to age; in addition, the existing magic sheet type projection lamp has uneven illumination brightness, color temperature and luminous flux at each position and poor accuracy, and is difficult to meet the technical requirements of projection, so that the displayed picture has poor appearance.
SUMMERY OF THE UTILITY MODEL
The light source calorific capacity to the projection lamp that prior art exists leads to the problem that the part is ageing, the life-span is impaired and the light source is inhomogeneous, the picture impression is poor to the illumination of film greatly, the utility model aims to provide a LED light source banks and projection lamp.
In order to achieve the above purpose, the technical scheme of the utility model is that:
an LED light source lamp group comprises a shell, a lamp bead plate, a plurality of LED lamp beads, a heat dissipation device, a power supply, a condensing lens and a Fresnel lens; the lamp bead plate is made of heat conducting materials and is fixedly installed in the shell, and the LED lamp beads are installed on the front face of the lamp bead plate; the heat dissipation device is fixedly arranged on the back surface of the lamp bead plate; the power supply is arranged on the shell and is electrically connected with the LED lamp beads and the heat dissipation device; the condensing lens and the Fresnel lens are both arranged on the shell and are positioned on one side of the front surface of the lamp bead plate, and the condensing lens is positioned between the lamp bead plate and the Fresnel lens; the condensing lens comprises a body and a plurality of condensing protrusions arranged on the same side face of the body, the condensing protrusions correspond to the LED lamp beads one to one, lamp bead grooves matched with the LED lamp beads are formed in the top ends of the condensing protrusions, and the surfaces of the condensing protrusions are aspheric arc-shaped, so that light rays emitted by the LED lamp beads in the lamp bead grooves are reflected to the same direction by the surfaces of the condensing protrusions.
As right the utility model discloses the further injeciton who makes, a plurality of LED lamp pearls evenly distributed is in the regular polygon region on the lamp pearl board.
As right the utility model discloses it is further limited that the heat abstractor includes radiating fin and the radiator fan that the heat conduction material was made, radiating fin is including fixing base member and a plurality of the fixing on the lamp pearl board fin on the base member, radiator fan fixes on the base member just radiator fan's airflow direction is just right the fin.
As a further limitation of the present invention, the power supply includes a power transformer and a rectifying and stabilizing device.
As a further limitation to the present invention, the surface of the light-gathering protrusion is parabolic, and the LED lamp bead is located at a position in the lamp bead groove coinciding with the focal point of the parabolic surface.
As a further limitation of the present invention, the lamp bead plate is made of copper.
As a further limitation of the present invention, the heat dissipating fins are made of aluminum material.
As right the utility model discloses it is further limited that the shell is made by the metal panel beating, the surface of shell is provided with the paint film, the lamp pearl board the power condensing lens and fresnel lens all installs through bolt or elasticity buckle structure detachable on the shell.
As a further limitation to the present invention, the base body and the lamp bead plate are provided with a heat dissipating paste therebetween.
On the other hand, the utility model also provides a projection lamp, it includes foretell LED light source banks.
By adopting the technical scheme, firstly, due to the arrangement of the lamp bead plate made of the heat conducting material and the heat dissipation device directly connected with the lamp bead plate, heat emitted by the LED lamp beads can be timely cooled by the heat dissipation device after being transmitted to the lamp bead plate, so that the service life of the LED lamp beads is prevented from being influenced by overhigh temperature of the LED lamp beads, and meanwhile, the luminous power of the LED lamp beads can be improved; in addition, due to the arrangement of the condensing lens and the Fresnel lens, light beams emitted by the LED lamp beads are condensed twice, so that the original light beams with inconsistent and uneven illumination directions are gathered to the same area, and the film in the area can obtain high-brightness and high-quality light beams.
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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only 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 view of an LED light source lamp set according to the present invention;
fig. 2 is a side view of an LED light source lamp set according to the present invention;
fig. 3 is a schematic structural diagram of a condensing lens in an LED light source lamp set.
In the figure, 1-a shell, 2-a lamp bead plate, 21-an LED lamp bead, 3-a heat dissipation device, 31-a heat dissipation fin, 32-a heat dissipation fan, 4-a power supply, 5-a condensing lens, 51-a body, 52-a condensing protrusion, 6-a Fresnel lens and 53-a lamp bead groove.
Detailed Description
The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
It should be noted that, in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "back", etc. indicate the orientation or position relationship of the structure of the present invention based on the drawings, and are only for the convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the technical scheme, the terms "first" and "second" are only used for referring to the same or similar structures or corresponding structures with similar functions, and are not used for ranking the importance of the structures, or comparing the sizes or other meanings.
In addition, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, e.g., the connection may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two structures can be directly connected or indirectly connected through an intermediate medium, and the two structures can be communicated with each other. To those skilled in the art, the specific meanings of the above terms in the present invention can be understood in relation to the present scheme in specific terms according to the general idea of the present invention.
Example one
As shown in fig. 1 and 2, the utility model provides a LED light source banks, including shell 1, lamp pearl board 2, a plurality of LED lamp pearl 21, heat abstractor 3, power 4, condensing lens 5 and fresnel lens 6.
Wherein the case 1 is made of a metal sheet, such as an aluminum plate or an iron plate, while the surface of the case 1 is provided with a paint film by means of bake plating to prevent rust. In the present embodiment, the shape of the housing 1 is configured in a rectangular box shape including four side surfaces located in the same circumferential direction, and the other two end surfaces are provided in an open shape.
The lamp bead plate 2 is made of heat conducting materials, such as copper, and the lamp bead plate 2 is fixedly arranged in the shell 1; specifically, in this embodiment, one of the side surfaces (the left side surface as shown in fig. 2) of the housing 1 is provided with a mounting hole, the lamp bead plate 2 is fixed on the side surface by a screw, and the lamp bead plate 2 covers the mounting hole.
The plurality of LED beads 21 are all mounted on the front surface (left side surface as shown in fig. 2) of the bead plate 2; in this embodiment, a plurality of LED beads 21 are uniformly distributed in a regular polygon region on the bead plate 2; in this embodiment, the plurality of LED beads 21 are distributed in a form of a plurality of groups of bead groups, each group of bead groups occupies a sub-region on the regular polygon region, for example, the sub-region may be a triangular region formed by a central point of the regular polygon region and two end points of any side of the regular polygon.
Even in another embodiment, can also be detachable with each above-mentioned triangle-shaped regional setting that constitutes regular polygon, two adjacent triangle-shaped regions are through draw-in groove dop structure or tenon fourth of the twelve earthly branches structural connection, so conveniently change and maintain damaged LED lamp pearl.
The heat dissipation device 3 is fixedly arranged on the back surface of the lamp bead plate 2 and used for dissipating heat for the lamp bead plate 2; in the present embodiment, the heat sink 3 includes a heat dissipating fin 31 and a heat dissipating fan 32 made of a heat conductive material.
The radiating fins 31 comprise a base body fixed on the lamp bead plate 2 and a plurality of fins fixed on the base body, the base body and the fins are integrally formed and made of aluminum materials; the substrate is a plate and is fixed on the back of the lamp bead plate 2 through a screw; the fins are in a sheet shape, the fins are vertically arranged on the back surface of the base body, and the fins are arranged in one row or multiple rows at intervals.
The heat dissipation fan 32 is fixed on the base body through a screw or a snap structure, and the airflow of the heat dissipation fan 32 is directed to the fins. Therefore, during the use, the heat that LED lamp pearl sent at first transmits for lamp pearl board 2, and lamp pearl board 2 transmits the heat for base member and fin again, blows the air current by radiator fan 32 again and cools down the fin to can effectually prevent that the ageing and the impaired condition in life-span of the high temperature of LED lamp pearl from taking place.
In another embodiment, in order to improve the heat exchange efficiency and effect between the lamp bead plate 2 and the heat dissipation device 3, a heat dissipation paste is disposed between the substrate and the lamp bead plate 2. The heat dissipation paste can ensure that virtual contact does not exist between the base body and the lamp bead plate 2, so that the contact surface between the base body and the lamp bead plate is ensured, and the heat conduction effect is improved.
The power supply 4 is arranged on the shell 1, and the power supply 4 is electrically connected with the LED lamp beads and the heat dissipation device 3. In the present embodiment, the power supply 4 includes a power supply case, and a power transformer and a rectifying and stabilizing device installed in the power supply case. Wherein, the power supply box is made of aluminum section; the power supply box is fixed on the other side surface (the right side surface shown in fig. 2) of the housing 1 by screws; the power transformer is manufactured according to the input and output voltages; the rectifying and stabilizing device is typically a rectifier. An LED driving circuit is also typically included to convert the ac voltage from the power supply 4 to a constant current, and to match the voltage and current of the LEDs as required by the LED device.
The condensing lens 5 and the Fresnel lens 6 are both mounted on the housing 1, the condensing lens 5 and the Fresnel lens 6 are both located on the front side of the lamp bead plate 2, and the condensing lens 5 is located between the lamp bead plate 2 and the Fresnel lens 6. It is understood that the condenser lens 5 condenses the light beam for the first time, and the fresnel lens 6 condenses the light beam for the second time. In this embodiment, in order to conveniently disassemble and assemble the condensing lens 5 and the fresnel lens 6, the condensing lens 5 and the fresnel lens 6 are detachably mounted on the housing 1 through a bolt or an elastic buckle structure, more specifically, the condensing lens 5 and the fresnel lens 6 are both mounted on a frame, and the frame is detachably mounted on the housing 1 through a bolt or an elastic buckle structure.
In the present embodiment, the condenser lens 5 includes a body 51 and a plurality of condenser protrusions 52 disposed on the same side of the body 51. The body 51 and the light-gathering projection 52 are made of glass or other transparent materials, and the body 51 and the light-gathering projection 52 are integrally formed. In addition, the light focusing protrusions 52 correspond to the LED lamp beads 21 one by one, the top end of each light focusing protrusion 52 is provided with a lamp bead groove 53 matched with the LED lamp bead 21, and the LED lamp beads 21 are positioned in the lamp bead grooves 53 when the LED lamp beads are used; moreover, the surface 54 of the light-gathering protrusion 53 is aspheric arc-shaped so that the light emitted from the LED lamp bead 21 in the lamp bead groove 53 is reflected to the same direction by the surface 54 of the light-gathering protrusion, thereby implementing the light-gathering operation, as shown in fig. 3.
For example, the surface 54 of the light-gathering protrusion 52 may be parabolic, and the position of the LED lamp bead 21 in the lamp bead groove 53 coincides with the focus of the paraboloid, so that the light emitted by the LED lamp bead 21 is transmitted into the light-gathering protrusion 52, and enters the parabolic surface 54, and then is reflected in parallel, thereby achieving the light-gathering effect without a light source to an ordered light source.
When the LED lamp is used, after the power supply is switched on, the LED lamp beads 21 emit light, and light beams of the LED lamp beads are converged into parallel light through the condensing lens 5; then, the Fresnel lens 6 gathers the light beams for the second time, so that the light beams can obtain a better gathering effect, the film can obtain better illumination brightness and higher illumination quality, the problem of uneven illumination is avoided, and the impression effect of a projection picture is improved; on the other hand, the heat that sends in the working process of LED lamp pearl 21 is after transmitting for lamp pearl board 2, and lamp pearl board 2 transmits the heat for base member and fin again, is blown the air current by radiator fan 32 again and is cooled down the fin, and carries with the thermal air current of fin then from two open ports of casing 1 outflow to the ageing and impaired condition of life-span that the high temperature that can effectually prevent LED lamp pearl causes takes place.
Example two
The utility model also provides a projection lamp, it includes foretell LED light source banks. Of course, a typical projection lamp also includes a light box, a film roll mechanism mounted on the light box, and various types of optical lenses.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (10)
1. An LED light source banks which characterized in that: the LED lamp comprises a shell, a lamp bead plate, a plurality of LED lamp beads, a heat dissipation device, a power supply, a condensing lens and a Fresnel lens; the lamp bead plate is made of heat conducting materials and is fixedly installed in the shell, and the LED lamp beads are installed on the front face of the lamp bead plate; the heat dissipation device is fixedly arranged on the back surface of the lamp bead plate; the power supply is arranged on the shell and is electrically connected with the LED lamp beads and the heat dissipation device; the condensing lens and the Fresnel lens are both arranged on the shell and are positioned on one side of the front surface of the lamp bead plate, and the condensing lens is positioned between the lamp bead plate and the Fresnel lens; the condensing lens comprises a body and a plurality of condensing protrusions arranged on the same side face of the body, the condensing protrusions correspond to the LED lamp beads one to one, lamp bead grooves matched with the LED lamp beads are formed in the top ends of the condensing protrusions, and the surfaces of the condensing protrusions are aspheric arc-shaped, so that light rays emitted by the LED lamp beads in the lamp bead grooves are reflected to the same direction by the surfaces of the condensing protrusions.
2. The LED light source bank of claim 1, wherein: the LED lamp beads are uniformly distributed in the regular polygon area on the lamp bead plate.
3. The LED light source bank of claim 1, wherein: the heat dissipation device comprises heat dissipation fins and heat dissipation fans, wherein the heat dissipation fins are made of heat conduction materials, the heat dissipation fins comprise a base body fixed on the lamp bead plate and a plurality of fins fixed on the base body, and the heat dissipation fans are fixed on the base body and are opposite to the fins in the air flow direction.
4. The LED light source bank of claim 1, wherein: the power supply comprises a power transformer and a rectification stabilizing device.
5. The LED light source bank of claim 1, wherein: the surface of the light-gathering protrusion is parabolic, and the position of the LED lamp bead in the lamp bead groove is coincided with the focus of the paraboloid.
6. The LED light source bank of claim 1, wherein: the lamp bead plate is made of copper materials.
7. The LED light source bank of claim 3, wherein: the heat radiating fins are made of aluminum material.
8. The LED light source bank of claim 1, wherein: the shell is made by the metal sheet, the surface of shell is provided with the paint film, the lamp pearl board the power the condensing lens and the fresnel lens all install through bolt or elasticity buckle structure detachable on the shell.
9. The LED light source bank of claim 3, wherein: and a heat dissipation paste is arranged between the base body and the lamp bead plate.
10. A projection lamp, characterized by: comprising a set of LED light sources according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020854022.5U CN212005327U (en) | 2020-05-20 | 2020-05-20 | LED light source lamp group and projection lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020854022.5U CN212005327U (en) | 2020-05-20 | 2020-05-20 | LED light source lamp group and projection lamp |
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| Publication Number | Publication Date |
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| CN212005327U true CN212005327U (en) | 2020-11-24 |
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| CN202020854022.5U Active CN212005327U (en) | 2020-05-20 | 2020-05-20 | LED light source lamp group and projection lamp |
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| CN (1) | CN212005327U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623270A (en) * | 2020-05-20 | 2020-09-04 | 上海星迅电气有限公司 | LED light source lamp group and projection lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111623270A (en) * | 2020-05-20 | 2020-09-04 | 上海星迅电气有限公司 | LED light source lamp group and projection lamp |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230808 Address after: 201400 floor 5, building 11, No. 6055, Jinhai highway, Fengxian District, Shanghai Patentee after: Shanghai Xingxun Technology Co.,Ltd. Address before: 200241 Room 355, Building 3, No. 1800, Jiangchuan Road, Minhang District, Shanghai Patentee before: SHANGHAI XINGXUN ELECTRIC Co.,Ltd. |