CN104776389B - A kind of zoom track lamp - Google Patents
A kind of zoom track lamp Download PDFInfo
- Publication number
- CN104776389B CN104776389B CN201510207002.2A CN201510207002A CN104776389B CN 104776389 B CN104776389 B CN 104776389B CN 201510207002 A CN201510207002 A CN 201510207002A CN 104776389 B CN104776389 B CN 104776389B
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- Prior art keywords
- radiator
- fixed
- strut
- screw
- outer ring
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S10/00—Lighting devices or systems producing a varying lighting effect
-
- 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
-
- 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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
-
- 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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/12—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by screwing
-
- 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
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
- F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
- F21V17/164—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
-
- 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
- F21V19/00—Fastening of light sources or lamp holders
- F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
Abstract
The invention discloses a kind of zoom track lamps, it include LED light source, radiator and reflector, LED light source is installed on radiator, and radiator is equipped with optical lens, it is characterized in that: further including having regulating device, power supply, fixed ring, orbital head branch wall, outer ring.It is equipped with lens slot and fixing groove outside, optical lens is fixed on the lens slot of outer ring by fixed ring, and reflector is fixedly installed with LED light source, and reflector front is connect with optical lens, and the reflector back side is fixedly connected by screw IV with the lower end of radiator.The lower end of radiator and outer ring are fixedly mounted, and radiator upper end is equipped with regulating device, and regulating device is connected and fixed with outer ring, and power supply is located in radiator, and power supply connects LED light source, and orbital head branch wall is fixedly mounted on heat dissipation external surface.The present invention is ingenious in design, compact-sized, convenient for disassembly and assembly, easy to operate, and adjusting beam angle is accurate, and angle can be adjusted at will, and the occasion at transformation beam angle uses, applied widely.
Description
Technical field
The invention belongs to headlamp technical fields, are related to a kind of zoom track lamp.
Background technique
In illuminator industry, when beam angle is that beam center line is reduced to the 50% of center line largest light intensity to light intensity
Angle, the spot size and light intensity of lamps and lanterns are specifically reflected, even if same light source will when using different beam angles
Different illuminating effects is generated, usually beam angle is bigger, and intermediate light intensity is weaker, and hot spot is bigger, and the dispersion effect of light is better, week
It is stronger to enclose ambient light, and beam angle is smaller, intermediate light intensity is stronger, and hot spot is smaller, and the dispersion effect of light is poorer, surrounding environment light
Line is weaker.It needs lamps and lanterns that there is different illuminating effects according to different situations in lamps and lanterns use site, changes lamps and lanterns light beam
Angle is usually to use the different lamps and lanterns of another beam angle, or be connected through a screw thread and set using a vehicle part pressure ring
A removable structure is counted, is replaced by the way that each lamps and lanterns are increased with the spare lens of several different beam angles, this
Two ways is not well positioned to meet requirement of the people to lamps and lanterns difference beam angle.
Existing zoom lamps and lanterns are light beam needed for realizing quickly any adjusting, belong to optical zoom equipment, to the essence of equipment
It spends more demanding, if equipment precision is low, convex lens is caused to shake during zoom, it will to make facula deviation, be not achieved
It is required that.And using the zoom lamps and lanterns of lens, most of light can still be had some light and be reflected by lens focus
It goes to form astigmatism, reduces the utilization rate of light.
Chinese patent: application number 201220176143.4 discloses a kind of varifocal lamps and lanterns adjustment fixing structure, the lamps and lanterns
It include: lamp cap, power supply device, pipe shaft, luminescence component, shell and lens；Lamp cap connects the rear end of pipe shaft, and power supply device is set to pipe
In body, luminescence component is fixed on the front end of pipe shaft；Shell is the outside that activity is placed on pipe shaft and luminescence component, and lens are fixed on
The front end of shell；Wherein: an at least hard split ring is equipped between pipe shaft or luminescence component and shell, the hard split ring is normal
Outer diameter when state is greater than the internal diameter of shell.The varifocal lamps and lanterns adjustment fixing structure of the utility model solves partial zoom and asks
Topic, but there is also service lifes not to grow, it is not high to adjust unstable, zoom accuracy and adjusts the problems such as beam effect is bad.
Chinese patent: application number 201410306764.3 discloses a kind of wall trench guide type Zoom lamp, including fixed ring,
Light source, lens and zoom mechanism, the light source are fixed on the fixed ring, and the zoom mechanism is installed on the fixed ring, institute
State lens and the zoom mechanism it is relatively fixed and be located at the light source direction of illumination, it is characterised in that: the zoom mechanism
Including loose collar and rotating ring；The inner wall of the fixed ring is equipped with two or more traveller, and the rotation is located on
In the fixed ring, the sliding slot equipped with annular cooperates with the traveller, do the rotating ring can relative to the fixed ring and rotate
Movement, and limit opposite be moved forward and backward；The rotation ring wall be equipped with two groups or thread groove more than two, connection inside and outside
Wall, the activity are located in the rotating ring, outer wall be equipped with two groups or it is more than two cooperate with the thread groove lead
Xiang Zhu can be slided in the thread groove；The fixed ring inner wall is equipped with leading for one group or one group or more front-rear direction setting
To slot, the guide post and the guide groove cooperate, and make the loose collar can the relatively described fixed ring back-and-forth motion.This is practical new
The wall trench guide type zoom lamps and lanterns of type solve the problems, such as any adjusting light beam of part, but unstable there is also zoom is adjusted
Determine, zoom accuracy is not high and adjusts the problems such as Zoom effect is bad.
For existing zoom lamps and lanterns there is also following disadvantage, adjustment is unstable, zoom accuracy is not high and adjusts Zoom effect not
The problems such as good.
Summary of the invention
It is an object of the invention to be directed to the deficiency of existing zoom lamps and lanterns, provide that a kind of structure is simple and easy to operate, makes
With zoom track lamp convenient, that adjusting Zoom effect is good.
To achieve the goals above, the invention adopts the following technical scheme:
A kind of zoom track lamp, includes LED light source, radiator and reflector, and LED light source is installed on radiator,
It is equipped with optical lens in the direction that LED light source emits beam, it is characterized in that: further including having regulating device, power supply, fixed ring, rail
Trace header branch wall, outer ring；It is described outer to be equipped with lens slot and fixing groove；The optical lens is fixed on by fixed ring
On the lens slot of outer ring；The reflector is fixedly installed with LED light source, and reflector front is connect with optical lens, reflector
The back side is fixedly connected by screw IV with the lower end of radiator；The lower end of the radiator and outer ring are fixedly mounted；Described
Radiator upper end is equipped with regulating device, for adjusting optical lens and LED light source directly apart to realize adjusting irradiation light
The angle of beam, regulating device are connected and fixed with outer ring；The power supply is located in radiator, and power supply connects LED light source；Described
Orbital head branch wall is fixedly mounted on heat dissipation external surface.
Above-described regulating device includes fixing sleeve, strut I, strut II, support plate, cover board, card, bull ball wire
Bar and nut cap；The strut I and II one end of strut is equipped with screw thread, and the other end is equipped with threaded hole, II one end of strut I and strut
It is threadedly secured on outer ring, the other end is fixedly connected by screw I with support plate；The fixing sleeve is fixedly mounted on lid
On plate, cover board is fixed on radiator upper end by screw II, and bull ball screw upper end is fixedly mounted on nut cap, and nut cap is logical
It crosses card to be fixed in support plate, bull ball screw lower end is connect with fixing sleeve.
Above-described fixing sleeve includes bull nut in I and bull nut II, and bull nut is in I and bull nut
II is equipped with flange, and flange is equipped with threaded hole, and bull nut II is connect with cover board by screw III respectively in I and bull nut
It is fixed.
Above-described radiator is set there are two fixed pillar, and fixed pillar is equipped with fixation hole and fixing screwed hole, institute
State fixation hole for connect installation strut I and strut II, orbital head branch wall passes through screw V and is fixed on threaded hole；
The strut I and strut II pass through the fixation hole of radiator, and one end is threadedly secured on outer ring, and the other end is logical
Screw II is crossed to be fixedly connected with support plate.
Above-described fixed ring is circlip.
Above-described support plate is equipped with scale, and nut cap is equipped with Warning Mark.
Above-described cover board is equipped with heat release hole.
Above-described optical lens is Fresnel Lenses.
The working principle of this zoom track lamp:
LED light source of the invention is fixed on radiator by screw IV and reflector, and power supply is fixed on scattered by screw
On hot body, Fresnel Lenses is fixed on outer ring by circlip, and bull nut is II fixed by screw III in I and bull nut
In on cover board, cover board is fixed on radiator by screw II, and across the fixation hole of radiator, one end leads to for strut I and strut II
It crosses and is threadedly secured on outer ring, the other end is fixedly connected by screw I with support plate, and nut cap is fixed on support plate by card
On, orbital head branch wall is fixed on the threaded hole of radiator by screw V.The screw pitch of bull ball screw is set as A, support plate
It is equipped with different scales, nut cap is equipped with a triangle arrow Warning Mark, when with external force rotary nut lid, outer ring
Interior Fresnel Lenses is just corresponding movement, while the relative distance L of nut cap and bull ball screw relative to radiator
It is changed between 0 and screw pitch A (0≤L≤A), also makes the light-emitting surface distance B of Fresnel Lenses and LED light source in L1 and L1+A
Between change (L1≤B≤L1+A), the bright light when distance B is in different numerical value, the beam angle that lamps and lanterns are issued is just different.With
Warning Mark when external force rotary nut lid on nut cap can correspond to a scale in support plate simultaneously, this scale is lamp
The set beam angle of tool.
Beneficial effects of the present invention:
1, the present invention makees to adjust the speed of beam zoom faster, more to adjust the angle of light beam using bull ball screw
Accurately, more stable when adjusting zoom, it is more preferable to adjust Zoom effect.
2, the present invention is equipped with scale using support plate, sets Warning Mark on nut cap, so that can when adjusting beam zoom
To adjust onto opposite scale, more convenient to use, practicability is more reinforced according to the requirement of oneself.
3, the present invention is ingenious in design, compact-sized, convenient for disassembly and assembly, easy to operate, adjusts that beam angle is accurate, and angle can be with
Just it adjusts, the occasion at transformation beam angle uses, applied widely.
Detailed description of the invention
Attached drawing 1 is the zoom track lamp decomposition texture schematic diagram of embodiment；
Attached drawing 2 is the zoom track lamp assembling structure schematic cross-sectional view of embodiment.
It is identified in figure: 1- nut cap, 2- bull ball screw, 3- screw I, 4- support plate, 5- card, 6- screw II, 7a-
Strut I, 7b- strut II, 8- cover board, 9- bull nut II, 11- screw III, 12- screw, 13- electricity in I, 10- bull nut
Source, 14- radiator, 15-LED light source, 16- reflector, 17- screw IV, 18- circlip, 19- Fresnel Lenses, 20- outer ring, 21-
Orbital head branch wall, 22- screw V.
Specific embodiment
With reference to the accompanying drawings, described in further detail to a specific embodiment of the invention.
Embodiment 1:
As shown in Figure 1, 2, a kind of zoom track lamp includes LED light source, radiator and reflector, LED light source installation
In on radiator, it is equipped with optical lens in the direction that radiator emits beam, further includes having regulating device, power supply, fixed ring, rail
Trace header branch wall, outer ring.It is equipped with lens slot and fixing groove outside, optical lens is fixed on the lens slot of outer ring by fixed ring
On, fixed ring is circlip.Reflector is fixedly installed with LED light source, and reflector front is connect with optical lens, and optical lens is phenanthrene
Nie Er lens, the reflector back side are fixedly connected by screw I with the lower end of radiator；The lower end of the radiator and outer ring are solid
Dingan County's dress；The radiator upper end is equipped with regulating device, for adjusting optical lens and LED light source directly apart to real
The angle of illumination beam is now adjusted, regulating device is connected and fixed with outer ring；The power supply is located in radiator, power supply connection
LED light source；The orbital head branch wall is fixedly mounted on heat dissipation external surface.
The regulating device include fixing sleeve, strut I, strut II, support plate, cover board, card, bull ball screw and
Nut cap, cover board are equipped with heat release hole.Strut I and II one end of strut are equipped with screw thread, and the other end is equipped with threaded hole, strut I and strut
II one end is threadedly secured on outer ring, and the other end is fixedly connected by screw II with support plate, and fixing sleeve is fixedly mounted on
On cover board, cover board is fixed on radiator upper end by screw III, and bull ball screw upper end is fixedly mounted on nut cap, nut cap
It is fixed in support plate by card, bull ball screw lower end is connect with fixing sleeve, and support plate is equipped with scale, on nut cap
Equipped with Warning Mark.
The fixing sleeve includes bull nut in I and bull nut II, and bull nut II is set in I and bull nut
There is a flange, flange is equipped with threaded hole, and bull nut II is connect with cover board by screw IV consolidate respectively in I and bull nut
It is fixed.
The radiator is set there are two fixed pillar, and fixed pillar is equipped with fixation hole and fixing screwed hole, fixation hole
It is connected with strut I and strut II, orbital head branch wall is fixed on threaded hole by screw V.
When work:
LED light source of the invention is fixed on radiator by screw I and reflector, and power supply is fixed on heat dissipation by screw
On body, Fresnel Lenses is fixed on outer ring by circlip, and bull nut II is fixed on by screw IV in I and bull nut
On cover board, cover board is fixed on radiator by screw III, and across the fixation hole of radiator, one end passes through for strut I and strut II
It is threadedly secured on outer ring, the other end is fixedly connected by screw II with support plate, and nut cap is fixed on support plate by card
On, orbital head branch wall is fixed on the threaded hole of radiator by screw V.The screw pitch of bull ball screw is set as A, support plate
It is equipped with different scales, nut cap is equipped with a triangle arrow Warning Mark, when with external force rotary nut lid, outer ring
Interior Fresnel Lenses is just corresponding movement, while the relative distance L of nut cap and bull ball screw relative to radiator
It is changed between 0 and screw pitch A (0≤L≤A), also makes the light-emitting surface distance B of Fresnel Lenses and LED light source in L1 and L1+A
Between change (L1≤B≤L1+A), the bright light when distance B is in different numerical value, the beam angle that lamps and lanterns are issued is just different.With
Warning Mark when external force rotary nut lid on nut cap can correspond to a scale in support plate simultaneously, this scale is lamp
The set beam angle of tool.
Embodiment described above, only more preferably one of concrete mode of the invention, those skilled in the art are at this
The usual variations and alternatives carried out within the scope of inventive technique scheme should be all included within the scope of the present invention.
Claims (6)
1. a kind of zoom track lamp includes LED light source (15), radiator (14) and reflector (16), LED light source is installed on
On radiator (14), it is equipped with optical lens in the direction that LED light source (15) emits beam, it is characterized in that: further including thering is adjusting to fill
It sets, power supply (13), fixed ring, orbital head branch wall (21), outer ring (20)；The outer ring (20) is equipped with lens slot and fixing groove；
The optical lens is fixed on the lens slot of outer ring (20) by fixed ring；The reflector (16) is fixedly mounted
Have LED light source (15), reflector (16) front is connect with optical lens, and reflector (16) back side passes through screw IV (17) and heat dissipation
The lower end of body (14) is fixedly connected；The lower end and outer ring (20) of the radiator (14) are fixedly mounted；The radiator
(14) upper end is equipped with regulating device, and regulating device is connected and fixed with outer ring (20)；The power supply (13) is located at radiator (14)
Interior, power supply (13) connects LED light source (15)；The orbital head branch wall (21) is fixedly mounted on radiator (14) outer surface；
The regulating device include fixing sleeve, strut I (7a), strut II (7b), support plate (4), cover board (8), card (5),
Bull ball screw (2) and nut cap (1)；The strut I (7a) and the one end (7b) of strut II is equipped with screw thread, and the other end is equipped with
Threaded hole, strut I (7a) and the one end strut II (7b) are threadedly secured on outer ring (20), the other end by screw I (3) with
Support plate (4) is fixedly connected；The fixing sleeve is fixedly mounted on cover board (8), and cover board (8) is fixed on by screw II (6)
Radiator (14) upper end, bull ball screw (2) upper end are fixedly mounted on nut cap (1), and nut cap (1) is solid by card (5)
Due on support plate (4), bull ball screw (2) lower end is connect with fixing sleeve；
The optical lens is Fresnel Lenses (19).
2. zoom track lamp according to claim 1, it is characterized in that: the fixing sleeve includes bull nut side I (9)
With bull nut side II (10), bull nut II (10) at I (9) and bull nut are equipped with flange, and flange is equipped with threaded hole,
Bull nut II (10) at I (9) and bull nut are connected and fixed by screw III (11) with cover board (8) respectively.
3. zoom track lamp according to claim 1, it is characterized in that: the radiator (14) is set, there are two fixation is convex
Column, fixed pillar are equipped with fixation hole and fixing screwed hole, and the fixation hole is for connecting installation strut I (7a) and strut II
(7b), orbital head branch wall (21) are fixed on threaded hole by screw V (22)；
The strut I (7a) and strut II (7b) pass through the fixation hole of radiator, and one end is threadedly secured on outer ring, another
End is fixedly connected by screw II with support plate.
4. zoom track lamp according to claim 1, it is characterized in that: the fixed ring is circlip (18).
5. zoom track lamp according to claim 1, it is characterized in that: the support plate (4) is equipped with scale, nut
It covers (1) and is equipped with Warning Mark.
6. zoom track lamp according to claim 1, it is characterized in that: the cover board (8) is equipped with heat release hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510207002.2A CN104776389B (en) | 2015-04-28 | 2015-04-28 | A kind of zoom track lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510207002.2A CN104776389B (en) | 2015-04-28 | 2015-04-28 | A kind of zoom track lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104776389A CN104776389A (en) | 2015-07-15 |
| CN104776389B true CN104776389B (en) | 2019-10-22 |
Family
ID=53618027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510207002.2A Active CN104776389B (en) | 2015-04-28 | 2015-04-28 | A kind of zoom track lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104776389B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202501404U (en) * | 2012-04-28 | 2012-10-24 | 东莞华明灯具有限公司 | Structure used for adjusting light emitting angle of lamp |
| CN103453478A (en) * | 2012-05-29 | 2013-12-18 | 天津华彩电子科技工程集团有限公司 | Multidirectional adjustment installing method of embedded down lamp and device thereof |
| CN204227347U (en) * | 2014-10-31 | 2015-03-25 | 广州艺尚灯光科技有限公司 | A kind of light fixture zoom lens control device |
| CN204554678U (en) * | 2015-04-28 | 2015-08-12 | 深圳市振红旗科技有限公司 | A kind of zoom track lamp |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6866401B2 (en) * | 2001-12-21 | 2005-03-15 | General Electric Company | Zoomable spot module |
| CN102809098B (en) * | 2012-07-11 | 2014-06-18 | 江苏好的节能光电科技有限公司 | Automatic focusing LED (Light Emitting Diode) searching lamp |
| CN203273716U (en) * | 2013-06-08 | 2013-11-06 | 湖南明和光电设备有限公司 | Focusing device of LED (light-emitting diode) lamp |
| CN203671489U (en) * | 2013-12-20 | 2014-06-25 | 广州市雅江光电设备有限公司 | Mechanism with electronic focus adjusting and manual focus adjusting capable of being switched over |
-
2015
- 2015-04-28 CN CN201510207002.2A patent/CN104776389B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202501404U (en) * | 2012-04-28 | 2012-10-24 | 东莞华明灯具有限公司 | Structure used for adjusting light emitting angle of lamp |
| CN103453478A (en) * | 2012-05-29 | 2013-12-18 | 天津华彩电子科技工程集团有限公司 | Multidirectional adjustment installing method of embedded down lamp and device thereof |
| CN204227347U (en) * | 2014-10-31 | 2015-03-25 | 广州艺尚灯光科技有限公司 | A kind of light fixture zoom lens control device |
| CN204554678U (en) * | 2015-04-28 | 2015-08-12 | 深圳市振红旗科技有限公司 | A kind of zoom track lamp |
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| Publication number | Publication date |
|---|---|
| CN104776389A (en) | 2015-07-15 |
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