CN108224249B - LED lamp with variable beam angle - Google Patents

LED lamp with variable beam angle Download PDF

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Publication number
CN108224249B
CN108224249B CN201810162804.XA CN201810162804A CN108224249B CN 108224249 B CN108224249 B CN 108224249B CN 201810162804 A CN201810162804 A CN 201810162804A CN 108224249 B CN108224249 B CN 108224249B
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China
Prior art keywords
reflector
lamp
beam angle
led
light source
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CN201810162804.XA
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Chinese (zh)
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CN108224249A (en
Inventor
甘良蔚
谢祖华
文迪
李玉林
刘泽荣
沈敏
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Shenzhen Civil Explosion Photoelectric Co ltd
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Shenzhen Civil Explosion Photoelectric Co ltd
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0025—Combination of two or more reflectors for a single light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

The invention discloses an LED lamp with a variable beam angle, which comprises a lamp panel, an LED light source, an adjusting structure and an emergent surface formed by at least two reflectors, wherein the emergent surface is arranged above the LED light source and is used for reflecting light rays emitted by the LED light source, the emergent surface is a free-form surface, the LED light source is fixed on the lamp panel, and the adjusting structure is fixedly connected with the lamp panel and is used for changing the projection direction of the light rays of the LED light source. The invention relates to the technical field of illumination, in particular to an LED lamp with a variable beam angle.

Description

LED lamp with variable beam angle
Technical Field
The invention relates to the technical field of illumination, in particular to an LED lamp with a variable beam angle.
Background
The LED floodlight is mainly used for building decoration illumination, and is mainly applied to illumination of single building, outer wall illumination of historic building groups, inner light and outer light transmission illumination of buildings, indoor local illumination, greening landscape illumination, billboard illumination, medical culture and the like. Most of the existing LED floodlights adopt a reflective cup as a secondary light distribution design, and are connected with a fixed support through a rotating shaft, so that the purpose of adjusting the irradiation direction of the lamp is achieved, the light beam angle of the lamp is a certain value, the using range of the lamp is small, the lamp with various light beam angles is required to be irradiated under different conditions, and therefore, the existing LED floodlights are required to change the irradiation range only through changing internal optical fittings, the cost is high, and the replacement is inconvenient.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide the LED lamp which is convenient to use and has a variable beam angle.
The technical scheme adopted by the invention is as follows:
the utility model provides a variable light beam angle's LED lamp, includes lamp plate, LED light source, regulation structure and comprises the exit face of two at least reflectors, the exit face mask is established the top of LED light source is used for the reflection the light that the LED light source launched, the exit face is free-form surface, the LED light source is fixed on the lamp plate, regulation structure with lamp plate fixed connection is used for changing the projection direction of LED light source light.
As a further improvement of the above solution, the reflector includes a main reflector and at least one sub-reflector, and the positions of the main reflector and the sub-reflector are such that the light emitted from the LED light source can be reflected by the main reflector, or such that the light emitted from the LED light source is reflected to the main reflector via the sub-reflector and then emitted, and the main reflector and the sub-reflector are free-form surface reflectors.
As a further improvement of the scheme, the adjusting structure comprises a rotating shaft, one end of the rotating shaft is fixedly connected with the lamp panel, when the rotating shaft rotates, the rotating shaft drives the lamp panel to rotate, the projection direction of the light of the LED light source is changed, the proportion of the light projected onto the main reflector and the auxiliary reflector is changed, and then the beam angle of the LED lamp is changed.
As a further improvement of the scheme, the adjusting structure further comprises a sliding groove, the other end of the rotating shaft is located in the sliding groove, the rotating shaft can move in the horizontal direction or the vertical direction relative to the reflector along the sliding groove, the lamp panel is driven to move, the focal length of the main reflector and the focal length of the auxiliary reflector are changed, and then the beam angle of the LED lamp is changed.
As a further improvement of the above scheme, the sliding groove is L-shaped.
As a further improvement of the above, the primary reflector and the secondary reflector are seamlessly connected, and the reflector is dome-shaped.
As a further improvement of the scheme, the rotating shaft is positioned in the middle of the lamp panel and fixedly connected with the lamp panel.
As a further improvement of the scheme, the rotating shaft is positioned at one end of the lamp panel, which is close to the main reflector, and is fixedly connected with the lamp panel.
As a further improvement of the scheme, the rotating shaft is positioned at one end of the lamp panel, which is close to the auxiliary reflector, and is fixedly connected with the lamp panel.
As a further improvement of the scheme, the rotating shaft is positioned above or below the lamp panel and is fixedly connected with the lamp panel.
The beneficial effects of the invention are as follows:
the utility model provides a variable beam angle's LED lamp, changes the projection direction of LED light source light through adjusting the structure, through the secondary grading of exit face, changes the beam angle of LED lamp, compares with the optical accessory change beam angle of prior art, and is more convenient.
Drawings
The following is a further description of embodiments of the invention, taken in conjunction with the accompanying drawings:
FIG. 1 is a schematic view of the overall structure of an LED lamp with a variable beam angle;
FIGS. 2 (a) and 2 (b) are schematic views showing different positions of the rotating shaft of the LED lamp with variable beam angles according to the present invention;
FIGS. 3 (a), 3 (b) and 3 (c) are schematic views showing three different projection directions of the LED light source light of the variable beam angle LED lamp according to the present invention;
FIG. 4 (a) is a graph of the light distribution of one embodiment of a variable beam angle LED lamp of the present invention;
fig. 4 (b) is a light distribution diagram of another embodiment of a variable beam angle LED lamp of the present invention.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
Fig. 1 is a schematic diagram of the overall structure of an LED lamp with a variable beam angle according to the present invention, and referring to fig. 1, an LED lamp with a variable beam angle includes a lamp panel 1, an LED light source 2, an exit surface formed by at least two reflectors, and an adjustment structure. The emergent surface is arranged above the LED light source 2 and is used for reflecting the light emitted by the LED light source 2 so as to change the emergent direction of the light. The emergent surface is a free curved surface, the LED light source 2 is fixed on the lamp panel 1, and the adjusting structure is fixedly connected with the lamp panel 1 and used for changing the projection direction of the light of the LED light source.
The reflectors comprise a main reflector 3 and a secondary reflector 4, the main reflector 3 and the secondary reflector 4 are free-form surface reflectors, the positions of the main reflector 3 and the secondary reflector 4 enable light rays emitted by the LED light source 2 to be reflected and emitted through the main reflector 3, or enable the light rays emitted by the LED light source 2 to be reflected to the main reflector 3 through the secondary reflector 4 and then emitted, and the main reflector 3 and the secondary reflector 4 are free-form surface reflectors. After the light emitted by the LED light source reaches the auxiliary reflector 4, the light is reflected to the main reflector 3 and then reflected, and the light controllability is stronger due to the design of secondary reflection.
Specifically, the adjusting structure comprises a rotating shaft 5, and one end of the rotating shaft 5 is fixedly connected with the lamp panel 1. The rotating shaft 5 is arranged in the middle of the lamp panel 1 and fixedly connected with the lamp panel 1. Fig. 2 (a) and fig. 2 (b) are schematic views showing different positions of a rotating shaft of an LED lamp with a variable beam angle according to the present invention, which is different from the above embodiment in that, as shown in fig. 2 (a), the rotating shaft 5 is disposed at one end of the lamp panel 1 near the main reflector 3, and is fixedly connected with the lamp panel 1; or, the rotating shaft 5 is arranged at one end of the lamp panel 1 close to the secondary reflector 4 and is fixedly connected with the lamp panel 1. As shown in fig. 2 (b), the rotating shaft 5 is disposed above or below the lamp panel 1, and the rotating shaft 5 is fixedly connected with the lamp panel 1 through a support column. When the rotating shaft 5 rotates, the rotating shaft 5 drives the lamp panel 1 to rotate, so that the projection direction of light rays of the LED light source 2 is changed, the proportion of the light rays projected onto the main reflector and the auxiliary reflector is changed, and then the beam angle of the LED lamp is changed.
Specifically, referring to fig. 1, the adjusting structure further includes a sliding groove 6, the other end of the rotating shaft 5 is located in the sliding groove 6, more specifically, the sliding groove 6 is L-shaped, the rotating shaft 5 can move in a horizontal direction or a vertical direction along the sliding groove 6 relative to the reflector, so as to drive the lamp panel to move, change the focal length of the main reflector and the focal length of the auxiliary reflector, and further change the beam angle of the LED lamp.
Specifically, fig. 3 (a), fig. 3 (b) and fig. 3 (c) are schematic diagrams of three different projection directions of light rays of an LED light source of the variable beam angle LED lamp according to the present invention, when most of the light rays emitted from the LED light source are irradiated to the main reflector 3, as shown in fig. 3 (a), the reflector functions as converging light rays at this time, and the beam angle of the LED lamp is a small beam angle; when the light emitted from one half of the LED light sources irradiates the main reflector 3 and the light emitted from the other half of the LED light sources irradiates the sub-reflector 4, as shown in fig. 3 (b), the beam angle of the LED lamp is a medium beam angle; when most of the light emitted from the LED light source is irradiated to the sub-reflector 4, as shown in fig. 3 (c), the beam angle of the LED lamp is a large beam angle. The position of the lamp panel is changed by adjusting the rotating shaft in the structure, so that the irradiation proportion of light rays emitted by the LED light source on the main reflector and the auxiliary reflector is changed, and the purpose of controlling the beam angle of the LED light is achieved.
Fig. 4 (a) is a light distribution graph of an embodiment of a variable beam angle LED lamp according to the present invention, fig. 4 (b) is a light distribution graph of another embodiment of a variable beam angle LED lamp according to the present invention, and in combination with fig. 4 (a) and 4 (b), fig. 1 shows a graph of a light intensity and a beam angle of light reflected by a sub-reflector, fig. 2 shows a graph of a light intensity and a beam angle of light reflected by a main reflector, and by rotating a rotating shaft on a lamp plate, the LED light source changes a projection direction of light of the LED light source along with rotation, and by secondary light distribution of the main reflector and the sub-reflector, the whole LED light beam angle is randomly adjusted from a small angle (fig. 4 (a)) to a large angle (fig. 4 (b)).
The utility model provides a LED lamp of variable beam angle, changes the projection direction of LED light source light through adjusting the structure, through the secondary grading of exit face, changes the beam angle of LED lamp to adjust the facula size, improve the utilization ratio of light. Compared with the prior art, the optical accessory is replaced to change the beam angle, so that the device is more convenient.
While the preferred embodiment of the present invention has been described in detail, the invention is not limited to the embodiment, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the invention, and these equivalent modifications and substitutions are intended to be included in the scope of the present invention as defined in the appended claims.

Claims (7)

1. The LED lamp with the variable beam angle is characterized by comprising a lamp panel, an LED light source, an adjusting structure and an emergent surface formed by at least two reflectors, wherein the emergent surface is arranged above the LED light source and is used for reflecting light rays emitted by the LED light source, the emergent surface is a free-form surface, the LED light source is fixed on the lamp panel, and the adjusting structure is fixedly connected with the lamp panel and is used for changing the projection direction of the light rays of the LED light source;
the reflector comprises a main reflector and at least one auxiliary reflector, wherein the positions of the main reflector and the auxiliary reflector enable light rays emitted by the LED light source to be reflected and emitted through the main reflector or enable the light rays emitted by the LED light source to be reflected to the main reflector through the auxiliary reflector and then emitted, and the main reflector and the auxiliary reflector are free-form surface reflectors;
the adjusting structure comprises a rotating shaft, one end of the rotating shaft is fixedly connected with the lamp panel, and when the rotating shaft rotates, the rotating shaft drives the lamp panel to rotate, the projection direction of the light of the LED light source is changed, the proportion of the light projected onto the main reflector and the auxiliary reflector is changed, and then the beam angle of the LED lamp is changed;
the main reflector and the auxiliary reflector are connected in a seamless mode, and the reflector is dome-shaped.
2. The LED lamp of claim 1, wherein the adjusting structure further comprises a sliding groove, the other end of the rotating shaft is located in the sliding groove, the rotating shaft can move horizontally or vertically along the sliding groove relative to the reflector, the lamp panel is driven to move, the focal length of the main reflector and the focal length of the auxiliary reflector are changed, and the beam angle of the LED lamp is further changed.
3. The variable beam angle LED lamp of claim 2, wherein said sliding channel is L-shaped.
4. The variable beam angle LED lamp of claim 1, wherein said shaft is located in the middle of said lamp panel and fixedly connected to said lamp panel.
5. The variable beam angle LED lamp of claim 1, wherein said shaft is located at an end of said lamp plate adjacent to said primary reflector and fixedly connected to said lamp plate.
6. The variable beam angle LED lamp of claim 1, wherein said shaft is located at an end of said lamp panel adjacent said secondary reflector and fixedly connected to said lamp panel.
7. The variable beam angle LED lamp of claim 1, wherein said shaft is located above or below said lamp panel and is fixedly connected to said lamp panel.
CN201810162804.XA 2018-02-26 2018-02-26 LED lamp with variable beam angle Active CN108224249B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN108224249B true CN108224249B (en) 2024-03-29

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110594701A (en) * 2019-10-18 2019-12-20 韦立 Medical reflective cup
CN112954846B (en) * 2021-02-09 2021-10-15 天津九安医疗电子股份有限公司 Method and system for quickly and quantitatively adjusting beam angle of lighting device

Citations (12)

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Publication number Priority date Publication date Assignee Title
CN2556481Y (en) * 2002-03-12 2003-06-18 谭维琦 Subreflector adjustable road lamp
CN201547672U (en) * 2009-10-26 2010-08-11 明达实业(厦门)有限公司 Optical structure for lampshade of yard lamp
CN201561302U (en) * 2009-09-21 2010-08-25 廖明珠 Light source module and bicycle lamp
CN101907244A (en) * 2010-07-16 2010-12-08 华南师范大学 Multi-functional desk lamp
CN102563488A (en) * 2010-12-14 2012-07-11 株式会社小糸制作所 Vehicle lamp
CN103256542A (en) * 2012-02-21 2013-08-21 三营超精密光电(晋城)有限公司 Light module of headlight
TW201425805A (en) * 2012-12-26 2014-07-01 Hon Hai Prec Ind Co Ltd Vehicle lamp module
CN103900005A (en) * 2012-12-27 2014-07-02 鸿富锦精密工业（深圳）有限公司 Automotive lamp module
CN104566105A (en) * 2013-10-11 2015-04-29 株式会社小糸制作所 Vehicle lamp and method of manufacturing the same
CN204437923U (en) * 2015-03-30 2015-07-01 常州星宇车灯股份有限公司 A kind of one of the distance-light based on LASER Light Source headlamp
CN106152003A (en) * 2015-03-30 2016-11-23 常州星宇车灯股份有限公司 Distance-light based on LASER Light Source one headlamp and means of illumination thereof
CN207990339U (en) * 2018-02-26 2018-10-19 深圳民爆光电技术有限公司 A kind of LED light of variable-angle

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2556481Y (en) * 2002-03-12 2003-06-18 谭维琦 Subreflector adjustable road lamp
CN201561302U (en) * 2009-09-21 2010-08-25 廖明珠 Light source module and bicycle lamp
CN201547672U (en) * 2009-10-26 2010-08-11 明达实业(厦门)有限公司 Optical structure for lampshade of yard lamp
CN101907244A (en) * 2010-07-16 2010-12-08 华南师范大学 Multi-functional desk lamp
CN102563488A (en) * 2010-12-14 2012-07-11 株式会社小糸制作所 Vehicle lamp
CN103256542A (en) * 2012-02-21 2013-08-21 三营超精密光电(晋城)有限公司 Light module of headlight
TW201425805A (en) * 2012-12-26 2014-07-01 Hon Hai Prec Ind Co Ltd Vehicle lamp module
CN103900005A (en) * 2012-12-27 2014-07-02 鸿富锦精密工业（深圳）有限公司 Automotive lamp module
CN104566105A (en) * 2013-10-11 2015-04-29 株式会社小糸制作所 Vehicle lamp and method of manufacturing the same
CN204437923U (en) * 2015-03-30 2015-07-01 常州星宇车灯股份有限公司 A kind of one of the distance-light based on LASER Light Source headlamp
CN106152003A (en) * 2015-03-30 2016-11-23 常州星宇车灯股份有限公司 Distance-light based on LASER Light Source one headlamp and means of illumination thereof
CN207990339U (en) * 2018-02-26 2018-10-19 深圳民爆光电技术有限公司 A kind of LED light of variable-angle

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