A kind of LED light of variable-angle
Technical field
The utility model is related to the LED lamps of lighting technical field more particularly to a kind of variable-angle.
Background technology
LED floodlight is mainly used to do building decoration illumination, main to apply in single building, historical building group's exterior wall photograph
The illuminations such as bright, lighting through light inside the building, indoor local lighting, Afforestation Landscape illumination, billboard lighting, Medical culture.It is existing
LED floodlight mostly use greatly reflector as secondary light-distribution design, holder is connected and fixed by shaft, to reach adjusting lamp
Has the purpose of direction of illumination, such design results in the beam angle of lamps and lanterns as certain value, and lamps and lanterns use scope is small, in different items
It is irradiated under part, it is necessary to which the lamps and lanterns of a variety of beam angles, therefore, existing LED floodlight need change light irradiation range that can only lead to
The optical accessories inside replacing are crossed, it is of high cost, and replace inconvenience.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model is to provide a kind of LED easy to use, variable-angle
Lamp.
Technical solution used by the utility model is:
A kind of LED light of variable-angle, including lamp plate, LED light source, adjustment structure and be made of at least two reflectors
Exit facet, the exit facet are located at the top of the LED light source, the light projected for reflecting the LED light source, it is described go out
It is free form surface to penetrate face, and the LED light source is fixed on the lamp plate, and the adjustment structure is fixedly connected with the lamp plate, is used
In the projecting direction for changing LED light source light.
As being further improved for said program, the reflector includes main reflector and at least one subreflector, institute
The position of the position and the subreflector of stating main reflector so that the light that the LED light source projects can be anti-by the master
Emitter reflection is projected, or after so that light that the LED light sources project reflexes to the main reflector via the subreflector
It projects again, the main reflector and the subreflector are free-form surface reflector.
As being further improved for said program, the adjustment structure includes shaft, one end of the shaft and the lamp
Plate is fixedly connected, and when the shaft rotates, the shaft drives lamp plate rotation, changes the projection side of the LED light source light
To change projects the light ratio on the main reflector and the subreflector, and then changes the beam angle of LED light.
As being further improved for said program, the adjustment structure further includes sliding groove, the other end position of the shaft
In in the sliding groove, the shaft can be moved horizontally along the relatively described reflector of the sliding groove or vertical direction moves
It is dynamic, it drives the lamp plate to move, changes the focal length of the focal length and the subreflector of the main reflector, and then change LED light
Beam angle.
As being further improved for said program, the sliding groove is L-shaped.
As being further improved for said program, the main reflector and the subreflector are seamlessly connected, the reflection
Device is in dome-shaped.
As being further improved for said program, the shaft is located at the middle part of the lamp plate, fixes and connects with the lamp plate
It connects.
As being further improved for said program, the shaft is located at the lamp plate close to one end of the main reflector,
It is fixedly connected with the lamp plate.
As being further improved for said program, the shaft is located at the lamp plate close to one end of the subreflector,
It is fixedly connected with the lamp plate.
As being further improved for said program, the shaft is located at the either above or below of the lamp plate, with the lamp
Plate is fixedly connected.
The utility model has the beneficial effects that:
A kind of LED light of variable-angle is changed the projecting direction of LED light source light by adjustment structure, passes through exit facet
Secondary light-distribution changes the beam angle of LED light, more convenient compared with the prior art replaces optical accessories change beam angle.
Description of the drawings
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings:
Fig. 1 is a kind of LED light overall structure diagram of variable-angle of the utility model;
Fig. 2 (a) and Fig. 2 (b) schematic diagram that be a kind of LED light rotating shaft position of variable-angle of the utility model different;
Fig. 3 (a), Fig. 3 (b) and Fig. 3 (c) are a kind of LED light LED light source light three of variable-angle of the utility model
The schematic diagram of different projecting directions;
Fig. 4 (a) is a kind of light distribution curve of LED light one embodiment of variable-angle of the utility model;
Fig. 4 (b) is a kind of light distribution curve of another embodiment of the LED light of variable-angle of the utility model.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
Fig. 1 is a kind of LED light overall structure diagram of variable-angle of the utility model, referring to Fig.1, a kind of variable-angle
LED light, include lamp plate 1, LED light source 2, at least two reflectors constitute exit facet and adjustment structure.Exit facet setting exists
Light is projected, to change the direction of beam projecting in the top of LED light source 2 for reflex LED light source 2.Wherein, exit facet is certainly
By curved surface, LED light source 2 is fixed on lamp plate 1, and adjustment structure is fixedly connected with lamp plate 1, for changing the throwing of LED light source light
Penetrate direction.
Reflector includes main reflector 3 and subreflector 4, and main reflector 3 and subreflector 4 are free form surface reflection
Device, the position of main reflector 3 and the position of subreflector 4 make the light that LED light source 2 projects that can be reflected by main reflector 3
It projects, or makes the light of the injection of LED light source 2 is reflexed to via subreflector 4 after main reflector 3 to project again, main reflector 3
It is free-form surface reflector with subreflector 4.After the light that LED light source is sent out reaches subreflector 4, it is re-reflected into principal reflection
It is reflected again on device 3, the design of secondary reflection makes light controllability stronger.
Specifically, adjustment structure includes shaft 5, one end of shaft 5 is fixedly connected with lamp plate 1.Shaft 5 is arranged in lamp plate 1
Middle part, be fixedly connected with lamp plate 1.Fig. 2 (a) and Fig. 2 (b) is a kind of LED light rotating shaft position of variable-angle of the utility model
Different schematic diagrames, difference lies in as shown in Fig. 2 (a), shaft 5 is arranged in lamp plate 1 close to principal reflection with above-described embodiment
One end of device 3 is fixedly connected with lamp plate 1;Alternatively, shaft 5 is arranged in lamp plate 1 close to one end of subreflector 4, it is solid with lamp plate 1
Fixed connection.As shown in Fig. 2 (b), the either above or below in lamp plate 1 is arranged in shaft 5, and shaft 5 is fixed by support column and lamp plate 1
Connection.When shaft 5 rotates, shaft 5 drives lamp plate 1 to rotate, and realizes the projecting direction for changing 2 light of LED light source, changes projection
Light ratio on to the main reflector and the subreflector, and then change the beam angle of LED light.
Specifically, referring to Fig.1, adjustment structure further includes sliding groove 6, the other end of shaft 5 is located in sliding groove 6, more
Specifically, sliding groove 6 is L-shaped, shaft 5 can be moved horizontally along 6 relative reflection device of sliding groove or vertical direction moves
It is dynamic, it drives the lamp plate to move, changes the focal length of the focal length and the subreflector of the main reflector, and then change LED light
Beam angle.
Specifically, Fig. 3 (a), Fig. 3 (b) and Fig. 3 (c) are a kind of LED light LED light source light of variable-angle of the utility model
The schematic diagram of the different projecting directions of three, line, when the light of most of LED light source outgoing is irradiated to main reflector 3, such as Fig. 3
(a), at this point, reflector plays convergence effect of light, the beam angle of the LED light is small beam angle;When the light of half LED light source outgoing
When line is irradiated on main reflector 3, the light of the other half LED light source outgoing is irradiated on subreflector 4, such as Fig. 3 (b), at this point,
The beam angle of the LED light is medium beam angle;When the light of most of LED light source outgoing is irradiated to subreflector 4, such as Fig. 3
(c), at this point, the beam angle of the LED light is big beam angle.Change the position of lamp plate, Jin Ergai by the shaft in adjustment structure
Become irradiation ratio of the light of LED light source outgoing on major-minor reflector, achievees the purpose that control LED light beam angle.
Fig. 4 (a) is a kind of light distribution curve of LED light one embodiment of variable-angle of the utility model, and Fig. 4 (b) is
The light distribution curve of another embodiment of the LED light of a kind of variable-angle of the utility model, in conjunction with Fig. 4 (a) and Fig. 4 (b), in figure
1 indicates the light intensity and beam angle graph of relation of subreflector reflected light, 2 light intensity and light for indicating main reflector reflected lights in figure
Beam angle graph of relation, by rotating the shaft on lamp plate so that LED light source changes the projection of LED light source light with rotation
Direction passes through the secondary light-distribution of main reflector and subreflector so that entire LED light beam angle is from low-angle (Fig. 4 (a)) to greatly
It is arbitrarily adjusted between angle (Fig. 4 (b)).
A kind of LED light of variable-angle is changed the projecting direction of LED light source light by adjustment structure, passes through exit facet
Secondary light-distribution changes the beam angle of LED light, to adjust spot size, improves the utilization rate of light.Optics is replaced with the prior art
Accessory changes beam angle and compares, more convenient.
It is to be illustrated to the preferable implementation of the utility model, but the utility model creation is not limited to institute above
Embodiment is stated, those skilled in the art can also make various be equal without departing from the spirit of the present invention
Deformation is replaced, these equivalent deformations or replacement are all contained in the application claim limited range.