CN220119189U - Linear dimming stage lamp - Google Patents

Abstract

The utility model discloses a linear dimming stage lamp, which comprises a halogen light source for generating a light path and at least one stroboscopic sheet for shielding the light path, wherein the halogen light source is provided with a light reflecting cup and a lamp wick positioned in the light reflecting cup, the lamp wick is provided with a spherical arc tube and an arc tube outer cover shell positioned outside the spherical arc tube, one side of the stroboscopic sheet close to a central axis of the light path is provided with a light homogenizing sheet, one side of the light homogenizing sheet close to the central axis of the light path is provided with an arc tube avoidance notch, the width of the spherical arc tube is R, the width of the arc tube outer cover shell is d, and the radius R of the arc tube avoidance notch is in the range of [ R,2d ]. In the process that the arc tube dodging gap is tangential to the projection of the arc tube outer shell on the stroboscopic sheet and moves to completely shade the light beam, the arc tube dodging gap is not too large, so that the light beam brightness change appears abrupt due to too fast shading area of the light beam, and the light beam brightness linear change is not obvious due to too slow shading area change of the light beam.

Description

Linear dimming stage lamp

Technical Field

The utility model relates to the technical field of stage lamps, in particular to a linear dimming stage lamp.

Background

In order to realize rapid on-off change, a stroboscopic sheet is usually arranged, the position of a blocked light beam is rapidly switched with the position of a non-blocked light beam, and in order to realize linear change of on-off, a light homogenizing sheet is arranged on one side of the stroboscopic sheet, which is close to a central axis of a light path, but when the light beam is to be completely blocked, a general light homogenizing sheet can rapidly darken the light beam, is quite abrupt, and cannot achieve complete linearity.

Disclosure of Invention

The utility model provides a linear dimming stage lamp which can make the brightness of the light beam change linearly and be excessively natural when the light beam is completely shielded.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a linear dimming stage lamp, includes the halogen light source that is used for producing the light path and is used for sheltering from at least one stroboscopic piece of light path, the halogen light source has reflector cup and is located lamp core in the reflector cup, lamp core and have spherical arc tube and be located the outer housing of arc tube outside the spherical arc tube, the stroboscopic piece is located the light outlet top of reflector cup, stroboscopic piece is close to light path center pin one side and is provided with the dodging piece, dodging piece is close to light path center pin one side and is provided with the arc tube and dodges the breach, and in the in-process that the stroboscopic piece removed, the arc tube dodges the breach will pass through spherical arc tube is in the projection of stroboscopic piece place plane, note the width of spherical arc tube is R, arc tube housing width is d, then the radius R scope of arc tube dodges the breach is [ R,2d ].

The linear dimming stage lamp is characterized in that an arc tube avoidance notch is formed in one side of the light homogenizing sheet, close to a light path center shaft, in the process of moving the stroboscopic sheet, the arc tube avoidance notch passes through the projection of the spherical arc tube on the plane where the stroboscopic sheet is located, so that when the light homogenizing sheet is about to completely shade a light beam, the light beam is emitted through the arc tube avoidance notch, meanwhile, the width of the spherical arc tube is R, the width of an arc tube outer cover shell is d, the radius R range of the arc tube avoidance notch is [ R,2d ], then the movement of the light homogenizing sheet enables the arc tube avoidance notch to be tangential with the projection of the arc tube outer cover shell on the stroboscopic sheet, and in the process of completely shielding the light beam by the light homogenizing sheet, the arc tube avoidance notch can not be too large to cause the light beam shading area to be suddenly changed, and too small to cause the light beam shading area to be changed too slowly, so that the light beam shading is not obviously changed.

Further, a light reflecting cup avoiding notch with an opening gradually enlarged is formed in one side, close to the light path central shaft, of the light homogenizing sheet, and the arc tube avoiding notch is located on one side, far away from the light path central shaft, of the light reflecting cup avoiding notch. Because the opening of the reflector cup avoidance notch is gradually enlarged, when the light homogenizing sheet moves to enable the reflector cup avoidance notch to be tangential with the projection of the reflector cup on the stroboscopic sheet, and in the process that the arc tube avoidance notch is tangential with the projection of the arc tube outer cover shell on the stroboscopic sheet, the shielding area of the light homogenizing sheet on the light beam is slowly changed, so that the light beam brightness and darkness linearity are changed.

Further, a light transmission gap with an opening gradually enlarged is formed in one side, close to the central axis of the light path, of the stroboscopic sheet, corresponding to the light reflection cup avoiding gap, and the light reflection cup avoiding gap is located in a range limited by the light transmission gap. The light-transmitting notch is arranged, so that the light spot extinction process projected by the light beam can be linear.

Further, two sides of the light transmission notch on the stroboscopic sheet are straight sides, and/or two sides of the light reflection cup avoiding notch on the light homogenizing sheet are straight sides. The processing of the light transmission notch on the stroboscopic sheet or the light reflection cup avoiding notch on the light homogenizing sheet is facilitated.

Further, the strobe plate cuts into and cuts out of the light path in a swinging way, the light transmission notch is at the farthest point of the strobe plate on one side of the central axis of the light path, and deflects in the direction away from the pivoting end of the strobe plate in the light transmission notch; and/or the arc tube avoidance gap is deviated from the furthest point of the light homogenizing sheet on one side of the central axis of the light path in the direction away from the pivoting end of the stroboscopic sheet at the light reflecting cup avoidance gap. Because the stroboscopic piece cuts in and cuts out the light path in a swinging way, the part of the light homogenizing piece and the part for intercepting the light beam can gradually deflect towards the direction far away from the pivoting end of the stroboscopic piece, so that the deflection of the light transmitting notch and the arc tube avoiding notch can ensure that the farthest point is used as the last completely light-transmitting part of the stroboscopic piece or the light homogenizing piece so as to ensure the light and dark linear change of the light beam.

Further, along with the movement of the strobe plate, the most distant point of the light transmission gap on the side of the strobe plate near the light path center axis and the most distant point of the arc tube avoidance gap on the side of the light homogenizing plate near the light path center axis all pass through the light path center axis. The position of the stroboscopic sheet or the light-homogenizing sheet, which is closed at last, can be guaranteed to be the farthest point of the light-transmitting gap, which is away from the stroboscopic sheet, which is close to the central axis of the light path, and the farthest point of the arc tube avoidance gap, which is away from the light-homogenizing sheet, which is close to the central axis of the light path, and the time of linear change of brightness and darkness of the light beam is prolonged.

Further, the number of the stroboscopic sheets is 2, the stroboscopic sheets are respectively positioned on two opposite sides of the halogen light source, and the light homogenizing sheets are arranged on one side, close to the central axis of the light path, of each stroboscopic sheet. The 2 stroboscopic sheets are respectively positioned on two opposite sides of the halogen light source, so that the space in the stage lamp can be reasonably utilized.

Further, the strobe plate cuts into and out of the light path in a swinging manner. The driving structure is simple and the cost is low.

Further, the two stroboscopic sheets and the two light homogenizing sheet interfere with the light path portion to be rotationally symmetrical about the light path center axis. The center of the light spot formed by the light beam is symmetrical.

Further, the light transmittance of the light homogenizing sheet is between 40% and 80%. The linear change of the brightness of the light beam can be obviously observed by human eyes.

Drawings

Fig. 1 is a schematic diagram of the internal structure of the linear dimming stage lamp of the present utility model.

Fig. 2 is a schematic diagram of a cross-sectional structure of a halogen light source of the linear dimming stage lamp of the present utility model.

Fig. 3 is a schematic diagram showing a structure of the strobe plate of the linear dimming stage lamp of the present utility model in a first position and cooperating with a halogen light source.

Fig. 4 is a schematic diagram showing a structure of the strobe plate of the linear dimming stage lamp of the present utility model in the second position and matched with the halogen light source.

Fig. 5 is a schematic diagram of a structure of the linear dimming stage lamp according to the present utility model, in which the strobe plate is in a third position after the light homogenizing plate is removed, and the strobe plate is matched with the halogen light source.

In the figure:

100. a halogen light source; 110. a reflective cup; 111. a light outlet; 120. a wick; 121. a spherical arc tube; 122. an arc tube outer housing; 200. a strobe plate; 210. a light transmission notch; 300. a light homogenizing sheet; 310. arc tube avoiding notch; 320. the reflective cup avoids the notch.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.

Referring to fig. 1 to 3, the present utility model provides a linear dimming stage lamp, including a halogen light source 100 for generating an optical path and at least one strobe sheet 200 for shielding the optical path, where the halogen light source 100 has a reflector 110 and a wick 120 located in the reflector 110, the wick 120 has a spherical arc tube 121 and an arc tube outer shell 122 located outside the spherical arc tube 121, the strobe sheet 200 is located above a light outlet 111 of the reflector 110, a light homogenizing sheet 300 is disposed on a side of the strobe sheet 200 near the central axis of the optical path, an arc tube avoidance notch 310 is disposed on a side of the light homogenizing sheet 300 near the central axis of the optical path, and during the movement of the strobe sheet 200, the arc tube avoidance notch 310 will pass through the projection of the spherical arc tube 121 on a plane where the strobe sheet 200 is located, and the width of the spherical arc tube 121 is R, the width of the arc tube outer shell 122 is d, and the radius R of the arc tube avoidance notch 310 is R,2 d.

According to the linear dimming stage lamp, the arc tube avoidance notch 310 is formed in one side, close to the central axis of the optical path, of the light homogenizing sheet 300, and in the moving process of the stroboscopic sheet 200, the arc tube avoidance notch 310 passes through the projection of the spherical arc tube 121 on the plane where the stroboscopic sheet 200 is located, so that when the light homogenizing sheet 300 completely shields a light beam, the light beam is emitted through the arc tube avoidance notch 310, meanwhile, the width of the spherical arc tube 121 is R, the width of the arc tube outer housing 122 is d, the radius R of the arc tube avoidance notch 310 is in the range of [ R,2d ], and then in the moving process of the light homogenizing sheet 300, the arc tube avoidance notch 310 and the projection of the arc tube outer housing 122 on the stroboscopic sheet 200 are tangential, and in the process of the light homogenizing sheet 300 completely shields the light beam, the arc tube avoidance notch 310 is not too large, so that the shielding area of the light beam is too fast, the light beam is suddenly changed, the area of the light beam is not too small, and the light beam is not blocked, and the dark line is not obvious.

In the present utility model, the central axis of the optical path coincides with the central axis of the wick 120.

Preferably, the radius R of the arc tube avoiding notch 310 ranges from [0.5d,1.5d ]. In this embodiment, the width d of the outer arc tube housing 122 is 12mm, and the radius R of the arc tube avoiding notch 310 is 10mm.

It should be noted that, the arc tube avoiding notch 310 may be a standard arc or a quasi-arc formed by a plurality of line segments, as long as the radius value of the arc formed by the arc tube avoiding notch 310 is within this range.

In a preferred embodiment of the present utility model, a reflector cup avoidance notch 320 with an opening gradually enlarged is disposed on a side of the light homogenizing sheet 300 close to the central axis of the light path, and the arc tube avoidance notch 310 is located on a side of the reflector cup avoidance notch 320 away from the central axis of the light path. Because the opening of the reflector cup avoidance notch 320 is gradually enlarged, when the light homogenizing sheet 300 moves to make the reflector cup avoidance notch 320 tangential to the projection of the reflector cup 110 on the strobe sheet 200, and the arc tube avoidance notch 310 is tangential to the projection of the arc tube outer housing 122 on the strobe sheet 200, the shielding area of the light homogenizing sheet 300 for the light beam is slowly changed, so that the bright and dark lines of the light beam are changed.

In the present utility model, the light homogenizing sheet 300 is approximately considered to be in the same plane as the strobe sheet 200.

In this embodiment, the opening of the light reflecting cup avoidance notch 320 is in smooth transition with the side of the light homogenizing sheet 300 close to the central axis of the light path.

In a preferred embodiment of the present utility model, a light-transmitting notch 210 with an opening gradually enlarged is disposed on a side of the strobe plate 200 near the central axis of the light path corresponding to the reflector cup avoidance notch 320, and the reflector cup avoidance notch 320 is located within a range defined by the light-transmitting notch 210. The light-transmitting notch 210 is arranged to enable the extinction process of the light spot projected by the light beam to be linear.

In this embodiment, the light-transmitting notch 210 is V-shaped.

As shown in fig. 3 to 5, in order to gradually cut into the light path by the light homogenizing sheet 300 and the strobe sheet 200, in fig. 3, the light-transmitting notch 210 is tangential to the projection of the reflector cup 110 onto the strobe sheet 200, in fig. 4, the arc tube avoiding notch 310 is tangential to the projection of the spherical arc tube 121 onto the strobe sheet 200, and in fig. 5, the light-transmitting notch 210 is tangential to the projection of the spherical arc tube 121 onto the strobe sheet 200.

In a preferred embodiment of the present utility model, both sides of the light-transmitting notch 210 on the strobe sheet 200 are straight sides, and/or both sides of the light-reflecting cup avoiding notch 320 on the light-homogenizing sheet 300 are straight sides. The processing of the light-transmitting notch 210 on the strobe plate 200 or the light-reflecting cup avoiding notch 320 on the light-homogenizing plate 300 is facilitated.

Preferably, two sides of the reflector cup avoidance notch 320 on the light homogenizing sheet 300 are tangent to the end of the arc tube avoidance notch 310, and the transition is smooth, and the change of brightness and darkness of the light beam is smoother.

Preferably, two sides of the light-transmitting notch 210 on the strobe panel 200 are parallel to two sides of the light-reflecting cup avoiding notch 320 on the light-homogenizing panel 300.

In a preferred embodiment of the present utility model, the strobe plate 200 cuts into and cuts out of the light path in a swinging manner, the light-transmitting notch 210 is at the farthest point of the strobe plate 200 on the side of the central axis of the light path, and deflects in the direction away from the pivoting end of the strobe plate 200 in the light-transmitting notch 210; and/or the arc tube avoiding notch 310 is located at the farthest point of the light homogenizing sheet 300 on the side of the central axis of the light path, and the reflector cup avoiding notch 320 is inclined in the direction away from the pivoting end of the strobe sheet 200. Since the strobe plate 200 cuts in and cuts out the light path in a swinging manner, the portions of the light homogenizing plate 300 and the light intercepting part gradually deflect in a direction away from the pivoting end of the strobe plate 200, so that the deflection of the light transmitting notch 210 and the arc tube avoiding notch 310 can ensure that the farthest point is used as the last completely light transmitting part of the strobe plate 200 or the light homogenizing plate 300, so as to ensure the light and dark linear change of the light beam.

In a preferred embodiment of the present utility model, as the strobe plate 200 moves, the most distant point of the light transmission notch 210 on the side of the strobe plate 200 near the light path center axis and the most distant point of the arc tube avoiding notch 310 on the side of the light beam 300 near the light path center axis pass through the light path center axis. The position of the strobe 200 or the light homogenizing sheet 300, which is closed at last, can be guaranteed to be the farthest point of the light transmission gap 210, which is far from the side of the strobe 200, which is near the central axis of the light path, and the farthest point of the arc tube avoiding gap 310, which is far from the side of the light 300, which is near the central axis of the light path, so that the time of linear change of brightness and darkness of the light beam is prolonged, and the central position of a light spot formed by the light beam is not changed in the dimming process.

In a preferred embodiment of the present utility model, the number of the strobe plates 200 is 2, and the strobe plates 200 are respectively located at two opposite sides of the halogen light source 100, and the light homogenizing plate 300 is disposed on one side of each strobe plate 200 close to the central axis of the light path. The 2 strobe pieces 200 are respectively positioned at two opposite sides of the halogen light source 100, so that the space in the stage lamp can be reasonably utilized. In other embodiments, the strobe 200 may also be located on the same side of the halogen light source 100.

It should be noted that the number of the strobe pieces 200 is not limited to 2, and may be more, and a plurality of the strobe pieces 200 and the light homogenizing pieces 300 thereon cooperate with each other to intercept the light beam.

In a preferred embodiment of the utility model, the strobe plate 200 cuts into and out of the light path in a swinging manner. The driving structure is simple and the cost is low. In other embodiments, the strobe 200 may also be translated into and out of the optical path.

In a preferred embodiment of the present utility model, the two strobe plates 200 and the two light homogenizing plates 300 interfere with the light path portion and are rotationally symmetrical about the light path center axis. The center of the light spot formed by the light beam is symmetrical.

In a preferred embodiment of the present utility model, the light transmittance of the light homogenizing sheet 300 is between 40% and 80%. The linear change of the brightness of the light beam can be obviously observed by human eyes. Preferably, the light transmittance of the light homogenizing sheet 300 is 55% -65%.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. The utility model provides a linear dimming stage lamp, its characterized in that, including halogen light source (100) and the at least one stroboscopic piece (200) that are used for sheltering from the light path that are used for producing the light path, halogen light source (100) have reflector cup (110) and are located wick (120) in reflector cup (110), wick (120) and have spherical arc tube (121) and be located arc tube housing (122) outside spherical arc tube (121), stroboscopic piece (200) are located light outlet (111) top of reflector cup (110), stroboscopic piece (200) are close to light path center pin one side and are provided with stroboscopic piece (300), stroboscopic piece (300) are close to light path center pin one side and are provided with arc tube dodge breach (310), and in the in-process that stroboscopic piece (200) removed, arc tube dodge breach (310) will pass through spherical arc tube (121) are in the projection of the plane that stroboscopic piece (200) is located, the width of arc tube (121) is R, arc tube housing (122) width is d, and then arc tube radius (R) is range (310) dodge.

2. The linear dimming stage lamp according to claim 1, wherein a reflector cup avoidance notch (320) with an opening gradually enlarged is arranged on one side of the light path central axis, which is close to the light homogenizing sheet (300), and the arc tube avoidance notch (310) is located on one side of the reflector cup avoidance notch (320) which is far away from the light path central axis.

3. The linear dimming stage lamp according to claim 2, wherein a light transmission gap (210) with an opening gradually enlarged is arranged on one side of the strobe plate (200) close to the central axis of the light path and corresponds to the light reflection cup avoidance gap (320), and the light reflection cup avoidance gap (320) is located in a range defined by the light transmission gap (210).

4. A linear dimming stage lamp according to claim 3, the two sides of the light transmission gap (210) on the strobe sheet (200) are straight sides, and/or the two sides of the light reflection cup avoiding gap (320) on the light homogenizing sheet (300) are straight sides.

5. A linear dimming stage lamp according to claim 3, the strobe plate (200) being cut into and out of the light path in a swinging manner, the light transmission gap (210) being inclined in the light transmission gap (210) in a direction away from the pivot end of the strobe plate (200) at a furthest point of the strobe plate (200) from the side of the central axis of the light path; and/or the arc tube avoiding notch (310) is at the furthest point of the light homogenizing sheet (300) at the side of the central axis of the light path, and the reflecting cup avoiding notch (320) is inclined towards the direction away from the pivoting end of the stroboscopic sheet (200).

6. The linear dimming stage lamp according to claim 3 or 5, wherein with the movement of the strobe plate (200), the light transmission gap (210) is located at the farthest point of the strobe plate (200) at the side of the low beam central axis, and the arc tube avoiding gap (310) is located at the farthest point of the light homogenizing plate (300) at the side of the low beam central axis, all pass through the light path central axis.

7. The linear dimming stage lamp according to claim 1, wherein the number of the strobe pieces (200) is 2, and the strobe pieces are respectively located at two opposite sides of the halogen light source (100), and the light homogenizing pieces (300) are respectively arranged on one side, close to the central axis of the light path, of each strobe piece (200).

8. The linear dimming stage lamp of claim 7, the strobe strip (200) cutting in and out of the light path in a swinging manner.

9. The linear dimming stage lamp of claim 7, both the strobe pieces (200), both the light homogenizing pieces (300) interfering light path portions being rotationally symmetric about the light path central axis.

10. The linear dimming stage lamp according to claim 1, the light transmittance of the light homogenizing sheet (300) being between 40% -80%.