CN206280927U - A kind of rotating seat and zoom projection lamp for projection lamp - Google Patents

Abstract

The utility model is related to lighting technical field, specifically related to a kind of rotating seat and zoom projection lamp for projection lamp, including the pedestal being connected with projection lamp radiator, boss is provided with the pedestal, draw-in groove is formed between the boss and the radiator, be held in for projection lamp guide cylinder lower end interior by the draw-in groove, it is to be slidably matched between the lower end of the draw-in groove and the guide cylinder, the revolution between the guide cylinder and the radiator is connected, the hot spot adjusting part for adjusting light spot shape is provided with the guide cylinder.The rotating seat of the application, the radiator with projection lamp coordinates, and forms draw-in groove, guide cylinder opposite heat sink is turned round, and then drive the revolution of hot spot adjusting part, by the revolution of hot spot adjusting part, the hot spot that projection lamp is projected also concomitant rotation, and then realize the regulation to light spot shape.

Description

A kind of rotating seat and zoom projection lamp for projection lamp

Technical field

The utility model is related to lighting technical field, and in particular to a kind of rotating seat and change out-of-focus projection for projection lamp Lamp.

Background technology

In lighting technical field, in order to adapt to different use environments, each required illumination purpose, illumination are reached The type of light fixture is increasingly enriched.Projection lamp is exactly relatively conventional a kind of light fixture in current illuminator, is widely used in In various illumination occasions, for example：In stage performance, various scenes and moulding are simulated；In movies-making special efficacy and advertising shooting In, for the special efficacy picture needed for projecting in some video display plots；In advertising sector, various advertising figures are projected Case；In art exhibition, for showing museum, odeum especially in artistic pictures, the various arts work and various venues signboard Deng visual experience and artistic atmosphere to spectators.

Although above-mentioned projection lamp can realize corresponding illuminating effect, with going deep into for research, invention human hair Existing, the projection lamp of current structure still has deficiency, specific as follows to state：

The projecting lamp structure of current structure, it is mainly including light source and projection lens, and projection lens lights light source Face forms illumination spot in being imaged onto illumination light field, and then realizes projection and/or illuminate, for different lighting environments and illumination It is required that, generally also need to be adjusted the size of illumination spot, but, in current projecting lamp structure, for spot size Regulation and inconvenient, directly limit illuminating effect and the drop shadow effect of projection lamp, limit the use scope of projection lamp.

Based on above-mentioned, a kind of adjusting means that can conveniently adjust projection lamp illumination spot of design is needed at present.

The content of the invention

The purpose of this utility model is：There is the inconvenience of illumination spot size adjustment not for current projecting lamp structure A kind of foot, there is provided adjusting means that can conveniently adjust projection lamp illumination spot.

In order to realize above-mentioned technique effect, the application is adopted the technical scheme that：

A kind of rotating seat for projection lamp, including the pedestal being connected with projection lamp radiator, are provided with the pedestal Boss, is formed with draw-in groove between the boss and the radiator, in be held in for projection lamp guide cylinder lower end by the draw-in groove, To be slidably matched between the lower end of the draw-in groove and the guide cylinder, connect the revolution between the guide cylinder and the radiator Connect, the hot spot adjusting part for adjusting light spot shape is provided with the guide cylinder.The rotating seat of the application, with projection lamp Radiator coordinates, and forms draw-in groove, guide cylinder opposite heat sink is turned round, and then drives the revolution of hot spot adjusting part, passes through The revolution of hot spot adjusting part, the hot spot that projection lamp is projected also concomitant rotation, and then realize the regulation to light spot shape.

Preferably, the lower end of the guide cylinder convexes to form bulge loop towards the draw-in groove direction, and the bulge loop stretches into the card It is slidably matched with the draw-in groove in groove.By the connection between rotating seat and radiator, the draw-in groove for guide cylinder revolution is formed, entered And facilitate the realization of guide cylinder revolution.

Preferably, the pedestal is ring-type, is surrounded on the light source periphery of light source assembly.

Preferably, the cylindrical ring-type of the boss.

Preferably, the rotating seat also includes base, and the base is fixedly connected with the guide cylinder, the base It is to be slidably matched between the upper side of lower end and the boss.Base, base lower end and raised upper side are set in guide cylinder It is slidably matched, in this way, guide cylinder, rotating seat and light source assembly position limitation in the axial direction are realized, meanwhile, Ensure that guide cylinder drives the revolution of base facing light sources component.

Preferably, the reflector is arranged on the base.

Preferably, the reflector is the funnel-form of both ends open, and the small end of the reflector is matched somebody with somebody with the source gap Close.

Preferably, the reflector is being divided into some reflective sections for docking successively along its axis direction.

In the such scheme of the application, reflector is arranged on base, is first the case for facilitating reflector, and Reflector is divided into some reflective sections, the manufacture of reflector has been also convenient for, can reliably ensure reflective surface in reflector Precision, so, it is ensured that the application projection lamp projection accuracy and illumination precision.

Preferably, it is provided with first step on the reflective sections, is set on the corresponding base of the first step There is second step, the first step is engaged with second step, and the first step of each reflector sections is self-corresponding with each When second step is engaged, docking forms overall reflective surface successively between the inwall of each reflector sections.By First Rank and the cooperation of second step, realize the spelling of reflector sections, and realize the installation to whole reflector.

Preferably, the base is cyclic structure, and the reflector is set in the reflector periphery.So, it is possible to keep away Exempt from the stop to light.

Preferably, the hot spot adjusting part is arranged on the base.

Preferably, the second breach of ring-type is additionally provided with the base.By setting the second breach, ensureing that connection can On the premise of property, reduce the weight of base, the weight for reducing projection lamp also saves manufacturing cost.

Disclosed herein as well is a kind of zoom projection lamp, it includes above-mentioned rotating seat.

The zoom projection lamp of the application, as a result of above-mentioned rotating seat, realizes the rotation to light spot adjusting device, leads to Cross the revolution of hot spot adjusting part, the hot spot that projection lamp is projected also concomitant rotation, and then realize the regulation to light spot shape.

In sum, by adopting the above-described technical solution, the beneficial effect of the application zoom projection optical system is：

The rotating seat of the application, the radiator with projection lamp coordinates, and forms draw-in groove, guide cylinder opposite heat sink is returned Turn, and then drive the revolution of hot spot adjusting part, by the revolution of hot spot adjusting part, the hot spot that projection lamp is projected also turns therewith It is dynamic, and then realize the regulation to light spot shape.

Brief description of the drawings

Fig. 1 is the structural representation of the projection lamp using the utility model rotating seat；

Fig. 2 is the sectional view of Fig. 1；

Fig. 3 is the sectional view of another cutting planes of Fig. 1；

Fig. 4 is the structural representation of sliding cylinder；

Fig. 5 is the structural representation installed at the utility model rotating seat；

Fig. 6 is the structural representation of slide；

Fig. 7 is the structural representation installed at the utility model rotating seat；

Fig. 8 is structural representation when lower plate coordinates with shadow shield；

Fig. 9 is structural representation when middle clamp plate coordinates with shadow shield；

Figure 10 is structural representation when train wheel bridge coordinates with shadow shield,

Marked in figure：1- convex lens or Fresnel Lenses, 2- reflectors, index glass before 3-, index glass after 4-, 5- light sources, 6- dissipate Hot device, 7- guide cylinders, 8- sliding cylinders, the chutes of 9- first, the limited posts of 10- first, 11- slides, the chutes of 12- second, 13- the 3rd is slided Groove, the limited posts of 14- second, 15- promotion rings, the damping pieces of 16- first, the damping pieces of 17- second, 18- holding parts, the breach of 19- first, 20- pedestals, 21- boss, 22- draw-in grooves, 23- bulge loops, 24- bases, 25- first steps, 26- second steps, the breach of 27- second, 28- shadow shields, 29- middle clamp plates, 30- lower plates, 31- through holes, 32- pads, 33- lead columns, the grooves of 34- first are pressed from both sides on 35- Plate, 36- handles, 37- stators, the grooves of 38- second.

Specific embodiment

Below in conjunction with the accompanying drawings, the utility model is described in detail.

In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only used to explain this Utility model, is not used to limit the utility model.

Embodiment, as Figure 1-10 shows：

A kind of rotating seat for projection lamp, including the pedestal 20 being connected with projection lamp radiator 6, set on the pedestal 20 Boss 21 is equipped with, draw-in groove 22 is formed between the boss 21 and the radiator 6, the draw-in groove 22 is by projection lamp guide cylinder In 7 lower ends are held in, to be slidably matched between the lower end of the draw-in groove 22 and the guide cylinder 7, make the guide cylinder 7 with it is described Revolution connection between radiator 6, is provided with the hot spot adjusting part for adjusting light spot shape in the guide cylinder 7.This Shen Rotating seat please, the radiator 6 with projection lamp coordinates, and forms draw-in groove 22, the opposite heat sink 6 of guide cylinder 7 is turned round, and then The revolution of hot spot adjusting part is driven, by the revolution of hot spot adjusting part, the hot spot that projection lamp is projected also concomitant rotation, and then Realize the regulation to light spot shape.

Used as one of which implementation method, the lower end of the guide cylinder 7 convexes to form bulge loop 23 towards the direction of the draw-in groove 22, The bulge loop 23 is stretched into and is slidably matched with the draw-in groove 22 in the draw-in groove 22.By the connection between rotating seat and radiator 6, The draw-in groove 22 for the revolution of guide cylinder 7 is formed, and then facilitates the realization of the revolution of guide cylinder 7.

Used as one of which implementation method, the pedestal 20 is ring-type, is surrounded on the periphery of light source 5 of light source assembly.

As one of which implementation method, the cylindrical ring-type of the boss 21.

Used as one of which implementation method, the rotating seat also includes base 24, the base 24 and the guide cylinder 7 It is fixedly connected, is to be slidably matched between the upper side of the lower end of the base 24 and the boss 21.Base is set in guide cylinder 7 24, the lower end of base 24 is slidably matched with the upper side of projection, in this way, realizing guide cylinder 7, rotating seat and light source assembly exists Position limitation on axial direction, meanwhile, also ensure that guide cylinder 7 drives the revolution of the facing light sources component of base 24.

Used as one of which implementation method, the reflector 2 is arranged on the base 24.

Used as one of which implementation method, the reflector 2 is the funnel-form of both ends open, the small end of the reflector 2 Coordinate with the gap of the light source 5.

As one of which implementation method, the reflector 2 be divided into along its axis direction it is some dock successively it is anti- Light sections.

In the such scheme of the application, reflector 2 is arranged on base 24, is first the case for facilitating reflector 2 Son, and be some reflective sections by 2 points of reflector, the manufacture of reflector 2 being also convenient for, can reliably ensure in reflector 2 The precision of reflective surface, so, it is ensured that the application projection lamp projection accuracy and illumination precision.

As one of which implementation method, first step 25, the first step 25 pairs are provided with the reflective sections Second step 26 is provided with the base 24 answered, the first step 25 is engaged with second step 26, each reflector 2 When the first step 25 of sections is engaged with each self-corresponding second step 26, between the inwall of each sections of reflector 2 successively Docking forms overall reflective surface.By the cooperation of first step 25 and second step 26, the spelling of the sections of reflector 2 is realized, And installation of the realization to whole reflector 2.

Used as one of which implementation method, the base 24 is cyclic structure, and the reflector 2 is set in the reflector 2 peripheries.So, it is possible to avoid the stop to light.

Used as one of which implementation method, the hot spot adjusting part is arranged on the base 24.

As one of which implementation method, the second breach 27 of ring-type is additionally provided with the base 24.By setting the Two breach 27, on the premise of connection reliability is ensured, reduce the weight of base 24, and the weight for reducing projection lamp also saves system Cause this.

Embodiment, as Figure 1-10 shows：

A kind of zoom projection optical system, including light source assembly and camera lens, between the camera lens and the light source assembly also The hot spot adjusting part for adjusting light spot shape is provided with, court is additionally provided between the hot spot adjusting part and the camera lens To convex lens or Fresnel Lenses 1 that the camera lens side is raised.

The zoom projection optical system of the application, sets hot spot adjusting part between camera lens and light source assembly, can be with root According to being actually needed, regulation forms variform light hole, the light that light source assembly sends by after different shape light hole, Projected by camera lens again, projection hot spot or illumination spot of different shapes are formed, in this way, realizing optical system to light spot shape Be adjusted, not only expand the scope of application of projection lamp, nor the internal structure of camera lens need to be increased so that projection lamp Simple structure, the adjustment of light spot shape is also more directly and convenient；

Further, convex lens or Fresnel Lenses 1 are also provided with the hot spot adjusting part of the application so that, light Line is adjusted in convex lens or Fresnel Lenses 1 are introduced into after passing hot spot adjusting part through convex lens or Fresnel Lenses 1 After enter back into camera lens, and convex lens or Fresnel Lenses 1 are raised towards camera lens side so that, light pass convex lens or During person's Fresnel Lenses 1, beam angle reduces, in this way, also reducing the size requirement of camera lens, and then reduces the chi of projection lamp It is very little.

Used as one of which implementation method, the convex lens or Fresnel Lenses 1 are arranged on the hot spot adjusting part.

As one of which implementation method, reflector is additionally provided between the light source assembly and the hot spot adjusting part 2, the reflector 2 is surrounded on the periphery that light source assembly emits beam near one end of the light source assembly, by the light source group High angle scattered light during part emits beam reflexes to the hot spot adjusting part.

In the such scheme of the application, the light that light source assembly sends is divided into the low-angle light near primary optical axis With positioned at low-angle light periphery, the larger high angle scattered light of angle, by setting reflector 2, is carried out instead to high angle scattered light Penetrate, high angle scattered light is participated in projection or is illuminated, in this way, improving the utilization rate of light source assembly luminous energy, it is to avoid wide-angle light The waste of line；

Another further aspect, for the light source assembly of LED type, due to LED light-emitting areas, color uniformity is poor in itself, so, meeting Cause to project hot spot or illumination spot color and brightness irregularities, illumination or the imaging effect of projection lamp can be influenceed；So, at this In application, there is provided reflector 2, reflector 2 is reflected high angle scattered light part, makes low-angle light and high angle scattered light Mixing, and then cause that the illumination spot that goes out of projection lens projects or projection hot spot also have good color uniformity and illumination The uniformity, in solving current projecting lamp structure, during using LED light source 5, illumination light field occurs that color is uneven and uneven illumination Even problem.

Used as one of which implementation method, the camera lens includes variable focus package, and the variable focus package includes being oppositely arranged Preceding index glass 3 and rear index glass 4, between the distance between the preceding index glass 3 and rear index glass 4, the preceding index glass 3 and light source assembly The distance between distance and the rear index glass 4 and the light source assembly can be adjusted.

In such scheme, camera lens include variable focus package, by variable focus package adjust projection lamp project projection hot spot or The size of person's illumination spot, and the distance of the preceding index glass 3 of variable focus package and rear index glass 4, between preceding index glass 3 and light source assembly away from From and the distance between rear index glass 4 and light source assembly can adjust so that, by sliding before index glass 3 and/or index glass 4 afterwards The combination of some burnt sections can be realized, and then adjusts out the projection hot spot or illumination spot of some sizes, it is further to expand The scope of application of projection lamp.

Used as one of which implementation method, the light source assembly includes light source 5 and radiator 6, and the variable focus package is also wrapped Guide cylinder 7 and sliding cylinder 8 are included, the rear index glass 4 is arranged in the guide cylinder 7, and the guide cylinder 7 is surrounded on the light source Outside 5, and it is connected with the radiator 6, the sliding cylinder 8 is slidably arranged on the guide cylinder 7, the preceding index glass 3 is arranged on On the sliding cylinder 8.By setting guide cylinder 7 and sliding cylinder 8, when sliding cylinder 8 is slided, between preceding index glass 3 and rear index glass 4 away from From change, and then realize the adjustment to projection lamp spot size.

It is relatively-stationary company between the hot spot adjusting part and the guide cylinder 7 as one of which implementation method Connect, for revolution is connected between the guide cylinder 7 and the radiator 6.When guide cylinder 7 is turned round, hot spot adjusting part is also with leading Turned round to cylinder 7, the hot spot for projecting projection lamp is rotated, and further improves the ability of regulation and control of the hot spot of projecting lamp structure, The further scope of application for expanding.

Used as one of which implementation method, the sliding cylinder 8 and guide cylinder 7 are hollow tubular structure, 8 sets of the sliding cylinder It is located on the guide cylinder 7.Using above-mentioned structure, the convenient alignment accuracy ensured between preceding index glass 3 and rear index glass 4 is also carried The Adjustment precision of hot spot high.

Used as one of which implementation method, the preceding index glass 3 is arranged on end of the sliding cylinder 8 away from rear index glass 4.Enter One step improves the adjustable range of distance between preceding index glass 3 and rear index glass 4.

As one of which implementation method, the first chute 9 is provided with the sliding cylinder 8, is provided with the guide cylinder 7 The first limited post 10 being engaged with first chute 9, first limited post 10 stretches into first chute 9.Make slip Cylinder 8 is in a chute and the limitation lower slider of the first limited post 10, it is ensured that the stability and reliability of slip.

Used as one of which implementation method, the rear index glass 4 is slidably arranged in guide cylinder 7, makes the rear index glass 4 can edge The axial direction of the guide cylinder 7 is slided.Index glass 4 is slidably arranged in guide cylinder 7 afterwards, rear index glass 4 sliding process realize with Light source assembly and between preceding index glass 3 distance regulation.

As one of which implementation method, be provided with slide 11 between the rear index glass 4 and the guide cylinder 7, it is described after Index glass 4 is arranged on the slide 11, is to be slidably matched between the slide 11 and the guide cylinder 7.

As one of which implementation method, the second chute 12, the correspondence of the second chute 12 are provided with the guide cylinder 7 The sliding cylinder 8 on be arranged on the 3rd chute 13, the second limited post 14, second limited post are provided with the slide 11 14 one end are connected with the slide 11, and the other end passes through the guide cylinder 7 and sliding cylinder 8.So that the slip of slide 11 is second The limitation lower slider of the chute 12 of limited post 14 and second, it is ensured that index glass 4 is slided afterwards stability and reliability.

Used as one of which implementation method, second limited post 14 connects through the end of the guide cylinder 7 and sliding cylinder 8 Promotion ring 15 is connected to, the promotion ring 15 is set in outside the sliding cylinder 8.Ring 15 is promoted by setting, index glass after convenient slip 4。

As one of which implementation method, the first some damping pieces 16, institute are provided with the madial wall of the sliding cylinder 8 State the first damping piece 16 to be staggeredly arranged with the second chute 12 on the guide cylinder 7, first damping piece 16 and the guiding The outer wall of cylinder 7 is engaged.By setting the first damping piece 16, make sliding cylinder 8 in damping state lower slider, be on the one hand to make user Slide sliding cylinder 8 when with good feel, it is even more important that after sliding cylinder 8 is slided in place, can reliably ensure with Relative position between guide cylinder 7, it is to avoid after user unclamps sliding cylinder 8, the risk that sliding cylinder 8 is shifted over is further ensured that The reliability that projection lamp is used.

As one of which implementation method, central axis circumference uniform distribution of first damping piece 16 around the guide cylinder 7. The damping for making sliding cylinder 8 receive in a circumferential direction is all more consistent, while ensureing that user uses feel, is also further ensured that Stability and reliability that sliding cylinder 8 is slided.

As one of which implementation method, at least one second damping pieces 17, described second are provided with the slide 11 Damping piece 17 is engaged with the guide cylinder 7.Using the second damping piece 17, also cause that user has when slide 11 is slided preferable Feel, while after also ensure that rear index glass 4 is slided in place, being capable of reliable holding position, it is to avoid the displacement of index glass 4 afterwards, protect The reliability of card projection lamp hot spot regulation.

It is recessed first to be provided with as one of which implementation method, on the corresponding slide 11 of second damping piece 17 Groove, second damping piece 17 is arranged in first groove.Facilitate the installation of the second damping piece 17.

Used as one of which implementation method, second damping piece 17 is O-ring seal.

Used as one of which implementation method, the slide 11 is split-type structural, and at least two are divided into a circumferential direction The unit of slide 11, the unit of the slide 11 is surrounded on the periphery of the rear index glass 4, the rear index glass 4 is held in interior.By slide 11 Split-type structural is set to, the clamping conveniently and between rear index glass 4 coordinates.

As one of which implementation method, the second groove is provided with the side wall along the circumferential direction of the slide 11, it is described It is provided with holding part 18 in second groove, the clamping of the holding part 18 each unit of slide 11 forms overall slide 11.It is convenient Connection between each unit of slide 11.

Used as one of which implementation method, the holding part 18 is jump ring.

As one of which implementation method, some first breach 19, first breach 19 are provided with the sliding cylinder 8 It is spaced apart with first chute 9.By setting the first some breach 19, the weight of sliding cylinder 8 is mitigated with this.

Used as one of which implementation method, the zoom projection optical system also includes rotating seat, the rotating seat bag The pedestal 20 being connected with the radiator 6 is included, boss 21 is provided with the pedestal 20, in the boss 21 and the radiator It is formed with draw-in groove 22 between 6, in be held in for the lower end of the guide cylinder 7 by the draw-in groove 22, the draw-in groove 22 and the guide cylinder 7 Lower end between to be slidably matched, realize the revolution connection between the guide cylinder 7 and the radiator 6.

Used as one of which implementation method, the lower end of the guide cylinder 7 convexes to form bulge loop 23 towards the direction of the draw-in groove 22, The bulge loop 23 is stretched into and is slidably matched with the draw-in groove 22 in the draw-in groove 22.By the connection between rotating seat and radiator 6, The draw-in groove 22 for the revolution of guide cylinder 7 is formed, and then facilitates the realization of the revolution of guide cylinder 7.

Used as one of which implementation method, the pedestal 20 is ring-type, is surrounded on the periphery of the light source 5.

As one of which implementation method, the cylindrical ring-type of the boss 21.

Used as one of which implementation method, the rotating seat also includes base 24, the base 24 and the guide cylinder 7 It is fixedly connected, is to be slidably matched between the upper side of the lower end of the base 24 and the boss 21.Base is set in guide cylinder 7 24, the lower end of base 24 is slidably matched with the upper side of projection, in this way, realizing guide cylinder 7, rotating seat and light source assembly exists Position limitation on axial direction, meanwhile, also ensure that guide cylinder 7 drives the revolution of the facing light sources component of base 24.

Used as one of which implementation method, the reflector 2 is arranged on the base 24.

Used as one of which implementation method, the reflector 2 is the funnel-form of both ends open, the small end of the reflector 2 Coordinate with the gap of the light source 5.

As one of which implementation method, the reflector 2 be divided into along its axis direction it is some dock successively it is anti- Light sections.

In the such scheme of the application, reflector 2 is arranged on base 24, is first the case for facilitating reflector 2 Son, and be some reflective sections by 2 points of reflector, the manufacture of reflector 2 being also convenient for, can reliably ensure in reflector 2 The precision of reflective surface, so, it is ensured that projection lamp projection accuracy and illumination precision.

As one of which implementation method, first step 25, the first step 25 pairs are provided with the reflective sections Second step 26 is provided with the base 24 answered, the first step 25 is engaged with second step 26, each reflector 2 When the first step 25 of sections is engaged with each self-corresponding second step 26, between the inwall of each sections of reflector 2 successively Docking forms overall reflective surface.By the cooperation of first step 25 and second step 26, the spelling of the sections of reflector 2 is realized, And installation of the realization to whole reflector 2.

Used as one of which implementation method, the base 24 is cyclic structure, and the reflector 2 is set in the reflector 2 peripheries.So, it is possible to avoid the stop to light.

Used as one of which implementation method, the hot spot adjusting part is arranged on the base 24.

As one of which implementation method, the second breach 27 of ring-type is additionally provided with the base 24.By setting the Two breach 27, on the premise of connection reliability is ensured, reduce the weight of base 24, and the weight for reducing projection lamp also saves system Cause this.

As one of which implementation method, the hot spot adjusting part, including for blocking the shading of light source assembly light Plate 28 and the clamp assemblies for clamping the shadow shield 28, the shadow shield 28 be located at the reflector 2 and rear index glass 4 it Between, to rotate connection between the shadow shield 28 and the holder, when the shadow shield 28 is rotated, there is at least one Put, the shadow shield 28 is stopped some or all of light that light source assembly sends.

The hot spot adjusting part of the application, by setting rotatable shadow shield 28, shadow shield 28, can in rotation process To block a portion for the light that light source assembly sends, the illumination spot or projection hot spot of respective shapes are formed, hidden In the rotation process of tabula rasa 28, with the change to light blocking position, the light spot shape of projection lamp also changes therewith, and then realizes Regulation to projection lamp light spot shape；And when shadow shield 28 blocks whole light, projection lamp can also be in the feelings do not closed Under condition, light is not projected, further expand accommodation, while also reducing what light source assembly was damaged by frequent start-stop Risk.

Used as one of which implementation method, the shadow shield 28 is at least two, and uniform in a circumferential direction.Shadow shield 28 is at least two, is cooperated between each shadow shield 28, can form light hole of different shapes, is entered but projection lamp shape Into hot spot of different shapes, while realizing that projection lamp light spot shape is adjusted, the adjustable of light spot shape is also added significantly to Pattern, further expands the scope of application of projection lamp.

Used as one of which implementation method, the clamp assemblies include middle clamp plate 29 and lower plate 30, the shadow shield 28 Between the middle clamp plate 29 and lower plate 30, the lower plate 30 is located near the side of light source assembly, the lower plate 30 and middle clamp plate 29 be both provided with through hole 31, the through hole 31 is surrounded on the light transmission path periphery of the light source assembly.It is logical Cross middle clamp plate 29 and lower plate 30 is clamped to shadow shield 28, can easily ensure that the rotation of shadow shield 28 turns for plane It is dynamic, and then the convenient adjustment to projection lamp light spot shape.

As one of which implementation method, some pads 32, institute are additionally provided between the middle clamp plate 29 and lower plate 30 The thickness of the thickness more than the shadow shield 28 of pad 32 is stated, lead column 33, the lead column are provided with the shadow shield 28 For rotation is connected between 33 and the middle clamp plate 29 or lower plate 30.Made between middle clamp plate 29 and lower plate 30 by pad 32 There is appropriate clearance, further facilitate the rotation of shadow shield 28, be also convenient for the control of the rotation amplitude of shadow shield 28.

Used as one of which implementation method, the lead column 33 is rotated with the middle clamp plate 29 and is connected, in the lead column The first groove 34 is additionally provided with the 33 corresponding middle clamp plates 29, the lead column 33 is slidably arranged in first groove 34 It is interior.By setting the first groove 34 and lead column 33 so that shadow shield 28 can be rotated around lead column 33, but also can be along the One groove 34 is moved, and further increases the position adjustment range of shadow shield 28, hot spot adjusting part is adjusted out more The hot spot of shape.

Used as one of which implementation method, first groove 34 is strip, the length direction of first groove 34 Radial direction with the through hole 31 is consistent.Facilitate and slided in the groove 34 of shadow shield 28 first, be also convenient for user to light spot shape Control.

Used as one of which implementation method, the hot spot adjusting part also includes train wheel bridge 35, the train wheel bridge 35 In the middle clamp plate 29 away from the side of the lower plate 30, pad is provided between the train wheel bridge 35 and the middle clamp plate 29 32, in the anti-dazzling screen, a portion is arranged between the train wheel bridge 35 and middle clamp plate 29, and another part is arranged on described Between lower plate 30 and the middle clamp plate 29.In such scheme, a portion shadow shield 28 is arranged on lower plate 30 with Between clamping plate 29, another portion is arranged between middle clamp plate 29 and train wheel bridge 35, it is to avoid mutual between this two parts shadow shield 28 Interference and stop, while light spot shape adjustable range is further increased, also further facilitate the regulation hot spot of user Operation.

As one of which implementation method, handle 36 is additionally provided with shadow shield 28, the handle 36 is corresponding described to lead To the second groove 38 is provided with cylinder 7, the handle 36 passes through second groove 38, reaches outside the guide cylinder 7, institute The length and length direction for stating the second groove 38 match with the rotation amplitude of the shadow shield 28.By setting handle 36, enter The regulation for facilitating light spot shape of one step.

Used as one of which implementation method, the convex lens or Fresnel Lenses 1 are arranged on the train wheel bridge 35.

As one of which implementation method, it is additionally provided with the train wheel bridge 35 for fixing the convex lens or Fresnel The stator 37 of lens 1.

As one of which implementation method, bolt is provided with the stator 37, the bolt passes through the stator 37th, train wheel bridge 35, middle clamp plate 29 and lower plate 30 are connected with the base 24.

In such scheme, convex lens or Fresnel Lenses 1 are arranged on train wheel bridge 35, stator 37, train wheel bridge 35, in Clamping plate 29 and lower plate 30 are connected with base 24 so that these parts are connected to an entirety, simplify the structure of projection, also side Production and maintenance work.

Embodiment, as Figure 1-10 shows,

A kind of zoom projection lamp, it includes above-mentioned rotating seat.

The zoom projection lamp of the application, as a result of above-mentioned rotating seat, realizes the rotation to light spot adjusting device, leads to Cross the revolution of hot spot adjusting part, the hot spot that projection lamp is projected also concomitant rotation, and then realize the regulation to light spot shape.

All any modification, equivalent and improvement made within spirit of the present utility model and principle etc., all should wrap It is contained within protection domain of the present utility model.

Claims (10)

1. a kind of rotating seat for projection lamp, it is characterised in that：Including the pedestal being connected with projection lamp radiator, the pedestal On be provided with boss, be formed with draw-in groove between the boss and the radiator, the draw-in groove is by projection lamp guide cylinder lower end In being held in, to be slidably matched between the lower end of the draw-in groove and the guide cylinder, make the guide cylinder and the radiator it Between revolution connection, the hot spot adjusting part for adjusting light spot shape is provided with the guide cylinder.

2. rotating seat according to claim 1, it is characterised in that：The lower end of the guide cylinder is raised towards the draw-in groove direction Bulge loop is formed, the bulge loop is stretched into and is slidably matched with the draw-in groove in the draw-in groove.

3. rotating seat according to claim 2, it is characterised in that：Also include base, the base and the guide cylinder It is fixedly connected, is to be slidably matched between the upper side of the lower end of the base and the boss.

4. rotating seat according to claim 3, it is characterised in that：The reflector of the projection lamp is arranged on the base On.

5. rotating seat according to claim 4, it is characterised in that：The reflector be divided into along its axis direction it is some The reflective sections for docking successively.

6. rotating seat according to claim 5, it is characterised in that：First step is provided with the reflective sections, it is described Second step is provided with the corresponding base of first step, the first step is engaged with second step, and each is reflective When the first step of device sections is engaged with each self-corresponding second step, docked successively between the inwall of each reflector sections Form overall reflective surface.

7. rotating seat according to claim 6, it is characterised in that：The base is cyclic structure, and the reflector is arranged In reflector periphery.

8. the rotating seat according to claim 3-7 any one, it is characterised in that：The hot spot adjusting part is arranged on institute State on base.

9. rotating seat according to claim 8, it is characterised in that：The second breach of ring-type is additionally provided with the base.

10. a kind of zoom projection lamp, it is characterised in that：Including the rotating seat as described in claim 1-9 any one.