KR100283770B1 - Lighting device with thermal management mechanism - Google Patents

Abstract

The motorized lighting device according to the invention comprises a number of motorized parameters, and improved thermal management devices, ie reflectors coated with cold reflector film, metal heat, housings with vents and thermally isolated motors. Allows thermal management devices, such as maonts, to operate with low noise.

Description

Lighting device with thermal management mechanism

1 is a schematic perspective view of a pivotable filter servo assembly according to the present invention.

2 is a schematic perspective view of a subassembly or module of three adjacent pivotable filters showing different filter orientations.

3 is a schematic end view of the FIG. 2 embodiment.

4 is a schematic perspective view of a lighting assembly comprising three modules of FIG. 2 enclosed in a cylindrical housing in accordance with an embodiment of the present invention.

Figure 5 (a) is a cross-sectional view of a cylindrical frame showing a preferred central support in accordance with the present invention.

Figure 5 (b) is a radial cross-sectional view of a cylindrical frame showing one module of six pivotable filters used for stage lighting in accordance with another embodiment of the present invention.

Fig. 5 (c) is a cross-sectional view of the axis in Fig. 5 (b).

5 (d) and 5 (b) are top views of the rotatable filter used in the embodiment.

6 is a perspective view of a lighting apparatus according to another embodiment for explaining a plurality of sets of filters installed in the lighting apparatus.

7 is an enlarged view for explaining the coupling structure of the color filters according to the present invention.

8 is an enlarged view of a drive mechanism according to the present invention.

9 is an enlarged view illustrating the fastening structure of the swing filter moving body at the axis center.

10 (a) to 10 (d) are top, front and side views of one filter carrier.

11 is a perspective view of a lighting apparatus according to an embodiment of the present invention.

12 is a cross-sectional view of the interior of the lighting apparatus according to the embodiment of the present invention.

13 is a perspective view of the lamp housing with the cover removed.

14 shows a lighting device viewed from the rear of the lamp housing.

FIG. 15 is a right side view of the lighting device shown with a cutaway view of the joint assembly. FIG. And

16 shows a left side view of the illuminating device shown with a cutaway view of the joint assembly.

* Explanation of symbols for main parts of the drawings

2: subassembly 10: cylindrical frame

20: filter 12: reference axis

22: gear wheel 24: ring gear

26,122: step motor 34: carrier shaft

40 lamp 42 reflector

48: lamp housing 54: windshield

60: center support member 68: bushing

70: bearing 100: large carrier

102: small carrier 104: spring wire

118: ring 110: roller

116: coupler 122: electric motor

123: bracket 124: electric motor mount

125: heat pain 130: guide column

133: pin 139: central axis assembly

144 metal plate 150 vent hole

155: thermal current transformer 165: motorized joint assembly

The present invention relates to a banquet lighting device, and more particularly to an automatic lighting device having a motorized mechanism.

Conventional focusing fixtures typically have a par 64 lamp (PAR 64 Lamp: Parabolic Aluminum Reflector) installed with a reflector mounted in a cylindrical metal housing suspended from a metal beam. It has the same 1000 watt fluorescent lamp. The lamp emits high intensity light that includes visible and potentially harmful infrared radiation. The heat generated by the lamp is partly reduced by free reflux through the vents in the lamp housing. However, heat resistant materials must be used in the housing to avoid damage from heat or frequent replacement.

The luminaire may be suspended from pipes or crutches on stage, and may be manually adjusted for azimuth and height. The focus of the lighting device then remains fixed throughout the performance. Typically, a frame installed at one end of the lamp housing holds a "gel" (gel), which is used to give a particular color to a colored plastic sheet or beam. The "gel" is installed manually and the color of the light remains fixed throughout the performance. If the plastic sheet or gel burns due to heat from the rays, the plastic sheet or gel must be changed, which is not easy when the lighting device is suspended, especially if it must be changed during a performance.

Recently, motorized gel-changing devices have been equipped with conventional fixed focus lighting devices to change the color of light during a performance. These gel-changing mechanisms have a motor for winding or unwinding bundles of gels wound together, as well as control electronics that respond to control signals to position the selected gel in front of the light beam. There is also a need for a fan that provides forced air cooling to cool the gel bundle, control electronics and motor. If there is no fan, the high temperatures in the lamp housing may burn the gel or impair the control electronics.

Automated lighting devices are equipped with motorized appliances for changing a number of variables in their housings. For example, a motorized joint assembly may be used to adjust the azimuth and height of the lamp housing, and motorized instruments may be used to move glass color filters to adjust the color of the light beam. Lenses and other photoforming devices mounted thereon may be used to adjust the size and shape of the light beam. The control electronics responsive to the control signals may be configured in the lamp housing and / or the motorized joint assembly. One or more fans are typically required to cool various parts of motors, electronics or motorized appliances. Heat sinks or throttles are provided in the lighting device to allow hot air to escape out of the lamp housing while preventing scattered light rays from escaping in any direction from the housing.

One disadvantage of forced air cooling in banquet lighting is that the sound produced by the performers is at a relatively low level, as in stage theater or opera. Noise generated by fans installed in lighting devices is unknown at high volume concerts and outdoor concerts, but may distract attention at stage plays, classical concerts, or operas where there are relatively quiet moments. However, reliable operation of automated lighting devices without forced blowers from fans or other advanced thermal management designs may not be possible or practical.

It is therefore an object of the present invention to provide an automated lighting device having various parameters, including an improved thermal management design, which allows the lighting device to operate quietly without a fan.

According to the present invention, an automated lighting device having various adjustment variables including a light forming mechanism actuated by a control electronics in response to a position, color, and control signal input is fastened to a heat vessel having external fins. And a high-power light source coupled within the cold-reflecting mirror. Practically disposed vent holes throughout the lamp housing allow free flow of air through the housing. The electric motors coupled in the lamp housing are supported by thermally isolated motor mounts and are provided with pin-coupled hot tubs. Thermal shields are arranged between the barrier of the color filter mechanism and the actuators coupled to the barrier, and also between the lamp housing and the motorized joint assembly. Here, the motorized joint assembly includes motorized mechanisms for remotely controlling the control electronics and the lamp housing.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

With reference to FIG. 1, the swing filter module or subassembly 2 which forms part of the lighting apparatus of this invention is demonstrated. The subassembly 2 is comprised in the tubular frame 10 (shown by a dashed line) which has the longitudinal axis | shaft which is extended from the input port 14 to the output port 16, ie, the reference axis line 12. As shown in FIG. Three filters are preferably supported rotatable about an individual axis 18 that intersects the reference axis 12 so that the radial arrangement is seen when viewed from either end in the direction of the axis 12. The filters 90 are composed of dichroic filters having the same optical properties and are pivoted around the axis 12 in a manner as described below with reference to FIGS. 5 (b) and 5 (c). Possibly supported. The filters 20 are supported at their outer ends by gear wheels 22 interconnected by suitable drive mechanisms, such as ring gears 24, whereby all wheels rotate at the same angular speed at the same time.

The filters 20 can pivot about their axis 18 from a closed position as shown in FIG. 1 to an open position that is approximately parallel to the reference axis 12. It can be seen that the filters 20 can rotate to an intermediate position between the aforementioned positions. The subassembly 2 is also characterized in that all the filters therein are at the same angle with respect to the light rays passing through the filters parallel to the reference axis 12.

The subassembly 2 receives the white light through the input port 14 and reliably changes the color of the light beam as it passes through the filter 20, thereby outputting the colored light to the output port 16. It is also intended to be delivered via. It can be seen that when the dichroic filter 20 is in the closed position, all light rays are substantially blocked by the filter. When the dichroic filters 20 are rotated to another extreme position parallel to the longitudinal axis 12, the light beam is essentially not blocked at all by the filter. By positioning the filter 20 at the selected position between these extreme positions, the hue and saturation of the final light can be controlled in a controlled manner.

The dynamic color change effect achieved by the present invention is determined according to the characteristics of the dichroic filter. U.S. Patent No. 4,392,187 discloses that the projection angle of the dichroic filter is changed in relation to the light beam so that the color spectrum passing through the filter is varied. The dichroic filter acts as an interference principle, essentially separating two colors from a white light source, with one color being reflected and the other being the complement of the transmitted color. The color transmitted through the dichroic filter depends on the type of material used in the filter layer and their reflection coefficient, the thickness of each layer, the number of layers and the projection angle of the white light source striking the filter surface. By varying the projection angle of the filter, a predetermined range of colors can be produced.

The dichroic filter used in the present invention may be composed of many commercial filters made by coating a dielectric film on glass or the like. Dichroic films are made of multiple layers with alternating layers each having a high and low reflection coefficient.

Referring to FIG. 2, three subassemblies or modules 2, 4 and 6 are connected in optical series with frames 10 (dotted lines) supporting them to form a single tubular array. Each module has a set of three dichroic filters that are pivotable in the manner described above with respect to filter 20 of FIG.

The filter sets of FIG. 2 are shown rotated to different positions. The module 2 represents a filter set A in which the filters are in the closed position, which block almost all light rays passing through the module 2.

The module 4 represents a filter set B in which the filters are arranged almost parallel to the longitudinal axis 12. This position is called the open position where the filters block no light rays passing through the module.

The module 6 represents a filter set C in which filters are arranged in an intermediate position between the open and closed positions. The current intermediate position shown in FIG. 2 is where the planes formed by the filters of set C are each disposed at an angle of 45 degrees with respect to the longitudinal axis 12.

In the embodiment shown in FIG. 2, all the filters of each set have their pivoting axes intersecting the reference axis 12 at a common point. In a preferred embodiment, the pivot axes of each set of filters form a radial plane. The present invention takes into account the various alternating contours in which each set of filters are staggered at a given position so that those axes do not intersect the reference axis 12 in common. In one such contour, the pivot axes of the filters in each set are spaced along the reference axis 12 so that the filters have a spiral staircase appearance in the closed position.

In a preferred arrangement, the filters of set A consist of long pass through yellow filters, the filters of set B consist of short pass through blue filters, and the filters of set C comprise complex color red filters. It consists of. In this arrangement, the illumination device can increase the selection of the light color due to the combination effect of the three series filter sets.

It can be seen that at least some degree of white light passes through the module 6 if the filters in the module 6 are in an intermediate position rather than a range of positions close to the closed position. The white and colored light leaving the module 6 in this way passes through the filters of the module 4 in turn, unless the filters of the module 4 are at or near the closed position. The same applies to light rays passing through the module 2.

A preferred drive mechanism for turning the filter 20 will now be described with reference to FIG. Each set of three filters is pivoted in an appropriate manner (not shown) under the control of a bidirectional stepper motor 26 mounted to the frame 10. The shaft 28 of the motor 26 ends at the worm gear 30. The worm wheel 32 is mounted to one of the filter support wheels 22 by the drive shaft 34. Each filter support wheel 22 has a gear circumference that engages with complementary gear teeth on the ring gear 24 as schematically shown in FIGS. 2 and 3. Since the filter support wheels 22 are the same size and each is driven by a ring gear 24 common to each module, all three filters of each module rotate synchronously. The motor 26 can be driven by a conventional control system (not shown) consisting of a motor drive circuit, a feedback sensor, and a suitable electrical control circuit. Referring again to FIG. 2, it can be seen that each filter set A, B and C is independently rotatable under the control of an individual drive motor 26.

Referring to FIG. 4, an illumination device comprising the assembly of FIG. 2 is shown assembled in a cylindrical outer housing 48. As shown in FIG. It can be seen that a housing shape other than a cylindrical shape can also be used. The housing 48 provides a means for mounting and protecting the filter module and other components described below. Conventional mounting mechanisms (not shown) are used. The housing 48 is closed by the partition 50 at the front end and the partition 52 at the rear end.

The lamp 40 and the reflector 42 are mounted to the rear partition 52. The lamp 40 and the reflector 42 serve as light sources to project light rays along the longitudinal axis 12. The light beam first passes through the turning filter set C, then passes through the turning filter set B, and finally passes through the turning filter set A.

A lens-shaped windshield 54 is also provided horizontally on the axis 12 to block the light beams after they pass through the swirl filter set A. FIG. This glass allows the light beam to provide the light beam properties of monochromatic light. The glass is mounted in a hole centered in the front bulkhead 50.

The illumination device of FIG. 4 can be used as one of many devices in an automation system as described in the Insulation Host 187 patent. Such a system is provided with means for suspending the lighting device, controlling its orientation and adjusting light ray parameters such as diffusion and intensity. The illuminating device of FIG. 4 shows a unique arrangement of the swivel filter for adjusting the light color and saturation.

To adjust the light intensity, the lamp 40 may be a low voltage incandescent type, such as a tungsten-halogen lamp, or may be connected to an electron dimmer (not shown). Alternatively, the lamp 40 may be an arc lamp such as a metal-halogenated discharge lamp, and its brightness and intensity may be adjusted by ordinary mechanical dimmer means (not shown) mounted in the housing 48.

A preferred technique for supporting the filters in the tubular frame 10 is shown in FIG. 5 (a). The central support member 60 is preferably a long aluminum rod of hexagonal cross section, and is supported in the frame 10 by the radial arm 62. Arm 62 has a screw end that is secured within member 60. The screw fastener 64 fixes the arm 62 to the frame 10.

Referring to Figs. 5 (b) and 5 (c), an alternating arrangement of six dichroic filters arranged radially with respect to the central support member 60 is shown. Each filter is fixed at its inner end to support the member 60 with a U-shaped clip 66. Each filter 20 is supported at its outer end by a gearwheel 22 having a U-shaped channel on its inner surface for receiving the filter. Each gearwheel 22 is rotatably supported by a bushing 68 fixed to the frame wall just inside the frame 10. A low friction spacer or bearing 70 separates the gearwheel 22 from the bushing 68.

Each gearwheel 22 has a hollow shaft 76 extending through the bearing 70 into the bushing 68. The material of the bushing 68 is chosen such that there is minimal friction between the bushing and the shaft 76 of the rotating gearwheel 22.

The gearwheels 22 are connected to rotate synchronously by the ring gear 24 as can be seen in figure 5 (c). The ring gear 24 is held in engagement with the gear wheel by a bearing 78 fixed to the frame by suitable fastening means. One filter support wheel 22 is assembled with the drive shaft 34 to obtain rotation, which drive shaft 34 is inserted into the hollow shaft 76 of the selected wheel 22 and secured with a suitable adhesive. The worm wheel 32 is attached to the drive shaft 34 to provide motor operation to the slew filter assembly as described in connection with FIG.

The preferred shape of the filter used in the embodiment of FIG. 5 (b) is shown in FIG. 5 (d). The filter 20 is a six-sided irregular polygon with two parallel sides for mounting as described above. The shape of the filter shows that almost all of the light beams are in the middle between the position of the six filters shown in Figure 5 (b) between the fully closed and 45 degree positions Selected to block.

It will be appreciated that embodiments of the invention may consist of any number of filters. It is believed that six filters per set, as in the fifth embodiment (b), provide the optimal stage lighting device. The embodiment of the three filters per set in FIG. 4 is more suitable for an office small track lighting device, and is more likely to be shown in a perspective view than the embodiment in FIG. 5 (b). Those skilled in the art will readily appreciate the final structure obtained by replacing the three modules of the six filter embodiments of FIG. 5 (b) for the modules 2, 4, and 6 of FIG.

6 illustrates a lighting apparatus according to another embodiment of the present invention. This embodiment constitutes an optional filter actuating mechanism to promote actuation control. As shown in FIG. 6, the lighting apparatus includes one cylindrical frame 10 and a plurality of sets of color filters 20 installed in the cylindrical frame 10. As shown in FIG. Each set of filters 20 is arranged along a longitudinal axis of the frame with a predetermined interval. The filters 20 are supported in the cylindrical frame 10 by the large filter carriers 100 and the small filter carriers 102. Each of the large filter carriers 100 rotates in the bushing 70. Each large filter carrier 100 extends through a channel 72 and bushing 70 for receiving any of the color filters 20 and protrudes through any one of a plurality of holes formed in the frame 10. Carrier shaft 34.

FIG. 7 is an enlarged view of the outer portion of the frame 10 showing a structure in which two sets of color filters 20 are combined. The spring wire 104 extends outwardly through the slot 106 at the end of the carrier shaft 34 and is securely supported by the carrier shaft 34. The outer extension of the spring wire 104 includes a straight portion for interlocking operation with the coupler 116. The spring wire 104 is preferably made of stainless steel.

Each coupler 116 is fixed to the ring 108 so as to be pivotable about the fixing column 117, and includes a hole in which the straight portion of the spring wire 104 extends. The ring 108 surrounds the frame 10 and is rotatably supported to the frame 10 by a number of rollers 110 attached to the tabs 112 of the ring 108. The rollers 110 are securely supported to the tabs 112 by the rotating shaft pins 114 through the holes formed in the tabs. The ring 108 is preferably made of a high temperature thermoplastic material, such as a semi-flexible glass fiber reinforced polyphenylene sulfide, similar to the Ryton material manufactured by the Phillips Petroleum Company. Do.

With the coupling structure as described above, the color filters 20 around each of the corresponding axes whose rotation of the ring 108 about the center of the cylindrical frame 10 generally intersects the longitudinal axis of the cylindrical frame 10. You will understand that it rotates.

8 illustrates a drive mechanism according to the present invention. The drive mechanism may be a step motor 122 supported by the motor fixing tool 124 sequentially fixed to the frame 10. The step motor 124 has a shaft 121 that protrudes or enters in the reverse rotation of the step motor 122. One end of the shaft 121 is engaged with the flexible bracket 123, which is preferably made of elastic steel. This bracket 123 is firmly supported by the tab 127. Tab 127 is part of ring 108. As such, when the motor 122 is driven in one direction, the shaft 121 extends while pushing the bracket 123 and the tab 127 and thus the center or main shaft of the frame 10 which is substantially concentric with respect to the frame 10. Rotate ring 108 about (12). When the motor 122 rotates in the opposite direction, the ring 108 also rotates in the opposite direction.

The coupling mechanism comprising the filter carrier shaft 34, the spring wire 104 and the coupling tool 116 allows at least three free movements.

First, because the ring 108 rotates back and forth and the coupler 116 moves past the shaft 34, the coupler 116 is located between the coupler 116 and the filter carrier shaft 34. Swivel over the fixing columns 117 to accommodate varying angles.

Secondly, the distance between the coupler 116 and the filter carrier shaft 34 changes as the ring 108 rotates. The spring wire 104 passes through a hole formed in the coupler 116. Otherwise, it is not attached to the coupler 116. The straight portion of the spring wire 104 is long enough to flexibly connect the coupler 116 pivoting at the maximum distance it travels, and thus accommodate a variable distance.

Third, the elevation angle of the coupler 116 with respect to the end of the filter carrier shaft 34 viewed from the end of the cylindrical frame 10 changes due to the rotation of the ring 108 due to the curvature of the frame 10. do. The straight portion of the spring wire 104 is slightly curved to accommodate the changing angle.

Together with the drive and coupling mechanism according to this embodiment of the invention, the filters 20 can be operated through movable parts with significantly reduced friction. As such, the movement of the filters 20 and filter carriers 100 has a very low backlash, especially when compared to the gear drive mechanism. Therefore, a more effective energy actuating mechanism is obtained with a more precise actuating regulator.

Another improvement that can be devised from this embodiment is due to the flexibility of the ring 108 that allows the cylindrical frame 10 to slightly deviate from the complete circumference in cross section. The frame 10 may therefore be a relatively inexpensive metal plate as opposed to a precise mold product. If the frame 10 is not perfectly circular, the semi-flexible ring 108 compensates for some distortion in accordance with the shape of the frame as the rollers 11 ride on a slightly changing surface.

Referring again to FIG. 7, the semi-flexible ring 108 includes a number of slots 128 into which the guide column 130 can be inserted. The guide column 130 is attached to the carrier fixing bracket 132 which is fixed to the frame 10 in sequence. Because the ring 108 rotates substantially concentrically about the cylindrical frame 10, the slots 128 and guide posts 130 maintain the longitudinal position of the ring 108 and also allow the frame 10 to rotate. It limits the range of movement of the ring 108 moving along the circumference.

As such, the ring 108 is maintained at substantially the same longitudinal position to prevent the spring wires 104 from exiting the holes in turning the couplers 116. The range of movement of the ring 108 is physically limited by the slots 128 and guide 130 so that it cannot be overdriven to the extent that the engagement mechanism to which the ring 108 pivots is damaged.

Large color filter carriers 100 are also associated with mobile limiting elements. As shown in FIG. 10, the large filter carriers 100 include two moving stop ends 140 and 142 integrally formed to limit the rotation range of the filters 20. The angle between the two stops is carefully chosen so that the color filters 20 are parallel to the longitudinal axis 12 when fully open and the color filters 20 do not contact each other when fully closed.

Referring again to FIG. 7, the length of the slits 128 is carefully chosen so that the ring 108 can be driven slightly further than the filter carriers 100 pivot in the open direction. Spurring wires 104 bend slightly so that the flexible assemblies are not damaged in such a case. Step motors 122 may be controlled by a memory based control system, such as the system disclosed in US Pat. No. 4,980,806 to Microprocessor and Taylor (Tay1or) and the like. When this control system is initialized, the motor control assistance system verifies the mechanism by driving the step motors 122 in the direction of opening the color filters 20. The motors are driven to the end of the physical stop so that all color filters 20 are set in a known position parallel to the main longitudinal axis 12 of the lighting device. Since the motor control assist system can drive the step motor only a few more steps than the number of steps required for the entire travel distance, and afterwards calculate and record the number of steps moved, the moving end detection sensors are needed. I never do that. The control system maintains a record in memory of the current position of the corresponding filter set. The filters can be driven open-loop, eliminating any demands on end-of-end sensors and control circuitry with such sensors.

Another element of the invention relates to the fixed structure of the filters 20 and the small filter carriers 102.

9 is an enlarged view of a portion located at or near the central axis of the lighting device. As shown in FIG. 9, the central axis 139 is suspended in the frame 10 by supporting rods 134. The central axis 139 includes a plurality of holes 136 into which the small filter carriers 102 are inserted. Compact filter carriers 102, filters 20 and a compacting device, such as finger springs 138, secured in central axis 139, to bushing 70 secured to an inner surface of frame 10. Pressure is applied to the ends of the large filter carriers 102. Finger springs 138 maintain a radial arrangement of coupling mechanisms, including couplings 116 and spring wires 104.

The present invention also contemplates applications other than stage lighting. For example, large lighting devices, such as searchlights that illuminate the night sky with rays of various colors, can be constructed using tactical techniques. In this embodiment of the present invention, it is contemplated to minimize the axial dimension of the filter assembly by increasing the number of swirl filters. It can be seen that the radial arrangement of the disclosed filters is ideally suited for the projection of circular light and offers economical and performance advantages over square or rectangular filter arrangements.

11 shows the thermal management arrangements of the present invention. The lighting apparatus of the present invention includes a lamp housing 48 suspended in the motorized joint assembly 165. The lamp housing of the present invention is preferably about 10 inches in diameter and 16 inches in length. 12 shows an interior cross sectional view of a lighting device according to the invention. A light source 40 is fastened in the reflector 42 to generate a light beam comprising a visible light portion and an infrared portion, for example a 1000 watt fluorescent lamp. Most of the heat from the rays is generated from the infrared part. The reflector 42 is preferably made of heat-resistant glass, and also the surface in contact with the lamp 40, the multilayer non-conductive film forming a "cold reflection mirror" to allow the hot wires to pass through the film while reflecting visible light. It is preferable to coat on it. The cold reflector coated on the reflector is also disclosed in U.S. Patent Application No. 693,366 entitled "Improvement of High Intensity Light Irradiator" filed by Applicant with other light adjusting devices.

The reflector 42 is thermally connected to a hot tub 52 which is preferably made of cast aluminum. Preferably, the contact surface between the hot tub 52 and the reflector 42 may be finished in a slightly flattened portion to achieve better thermal contact.

The back of the glass reflector is placed near the body of the heat sink. Most of the hot wires guided by the reflector impinge the heat 52 which passes through the film and the glass material of the reflector 42 and absorbs heat. A small amount of heat radiation is absorbed by the glass material of the reflector 42 and is also radiated and scattered away by reflux through the vents and into the heat container 52.

The heat trough 52 includes a plurality of fins 57 formed at the rear, which provide increased surface area for radiating heat and providing increased free reflux. The protruding fins 57 are placed vertically so that hot air that is not blocked by the fins can freely flow upwards between the fins. The base of the lamp 40 is coupled to a socket fastened in a cavity formed in the heat container 52. End cap 58 is installed on the distal end of the heat reservoir 52 to perform the function as a light control plate. The cavity between the hot tub 52 and the end cap 58 provides a space for hot air to escape from the periphery of the lamp 40. This cavity acts as a chimney to cool the lampholders when the lamp housing is directly underneath. The heat cylinder 52, the lamp 40, and the reflector 42 may be disposed at one end of the lamp housing 48. The light beam is guided through an exit hole at the other end of the lamp housing 48.

Most of the heat generated by the lamp 40 passes through the cold-reflective coating layer of the reflector 42 and is lost by radiation and reflux through the glass material or heat 52 of the reflector. The visible and cooling portions of the light beam are irradiated out of the housing 48 to illuminate the parties or the stage. Since the reflector 42 and heat collector 52 remove most of the heat, the optical elements and other system components disposed on the path of the light beams are protected from excessive thermal stress.

FIG. 13 shows the lamp housing 48 with the lids 156 and 158 removed so that the filter actuation mechanisms are lifted out. The filter actuators are driven by motors 122 mounted in a fin shaped hot tub 125 and mounted in a cast non-metallic motor mount 124. Here, the non-metallic motor mount is preferably made of a low thermal conductor composite material. As a preferred embodiment Ryton is used. The motor mount 124 is sequentially installed on the metal plate 144 suspended from the cylindrical frame 10 at a narrow interval. The metal plate 144 serves as a protection against heat dissipation from the cylindrical frame 10. As such, the motor is protected from side effects due to excessive heat occurring in the housing of the motor by the following three things. That is, firstly by a metal plate heat shield 144 that blocks heat release and heat transfer from the cylindrical frame 10, secondly by a thermally isolated motor mount 124 that resists heat conduction, and finally by a third It is protected by a fin-shaped heat sink 125 that dissipates heat formed by the current passing through the windings of the motor.

Referring back to FIG. 12, the glass color filters 20 are supported in the cylindrical frame 10 by the metal center filter carriers 102, the metal outer filter carriers 100, and the plastic bushing 70. You can see that. The metal center filter carriers 102 are supported by a central axis assembly 139 which is generally arranged in the direction of the passage of the light beam and along the longitudinal axis of the lamp housing. The metal center filter carriers 102 are made of a material that can resist changes in shape due to heat. The metal outer filter carriers 100 are supported by carrier holders 132 suspended on the outer surface of the cylindrical frame 10. Carrier holders include pins 133 that dissipate heat absorbed from the cylindrical frame 10.

A heat resistant glass lens 54 is disposed across the exit hole of the lamp housing 48 and is supported by the front ring 148. A plurality of vent holes 150 formed in the front ring allows the passage of air through the ring. Ventilation holes formed in the front portion of the cylindrical frame 10 allows the passage of air through the cylindrical frame 10. Light control plates 156 and 158 fastened to the cylindrical frame 10 block direct sunlight from the light beam. The heat current transformer 155 blocks heat transfer and heat dissipation from the heat cylinder 52 to the electric motors. The metal covers are suitably disposed around the cylindrical frame 10 surrounding the motors and the filter actuators, and form a single air chamber surrounding the cylindrical frame. Vents 160 formed in the covers allow the passage of air through the covers. A hump 162 is formed in the cover 158 to accommodate the motors 122 installed in the thermally isolated motor mounts 124. Vents 163 formed in the hump allow the passage of air through the hump. The lower metal plates 144 on which the motor mounts are supported form another air chamber under the hump different from the air chamber surrounding the cylindrical frame 10. The hot air surrounding the cylindrical frame is prevented from mixing with the air surrounding the filter operated motors 122. The lamp housing 48 is cooled by the reflux phenomenon where relatively cold air is introduced through some vents while hot air is drawn out through other vents.

The lamp housing 48 is suspended in a motorized joint assembly 165 supported by thermally isolated plastic sunshade 164. Joint assembly 165 surrounds motorized instruments 166 and 168 (see FIGS. 15 and 16) for remotely controlling the position of the lamp housing relative to azimuth and height. Control electronics 170 responsive to the control signal input may also be enclosed in the joint assembly. Electronic devices include electric motor driving circuits for operating the motors of the positioning mechanism and the filter actuating mechanism. Metal plates 171, 172, 173 disposed between the lamp housing and the joint assembly are attached to each of the joint cross member 174 and the two joints 175, 176, and the lamp housing ( It serves as a thermal protector to protect the joint assembly from hot air and heat dissipation. Positioning motors and electronic control circuits are protected from an inoperable state due to excessive heat in the joint assembly 165 by the effect of the metal plates 171, 172, 173.

The various thermal management arrangements disclosed herein are designed to operate in any direction of the lamp housing since the principle construction of the lighting device of the present invention lies in moving and tilting the lamp housing in various directions.

Although various embodiments of the present invention have been disclosed through the accompanying drawings and the foregoing detailed description, the present invention is not limited to the disclosed embodiments, and various changes, numerical changes, and modifications may be made without departing from the spirit of the present invention. It will be easy to understand that replacement of parts is possible.

Claims (15)

An illumination device having variable variables, comprising: a light source for generating light having a visible portion and an infrared portion; A housing having an inner frame and first and second ends surrounding the light source near the first end; A reflector disposed near the light source for reflecting a portion of the light forming a beam irradiated toward the second end, the reflector comprising a cold reflecting film capable of reflecting the visible portion of the light and transmitting the infrared portion; A heat reservoir disposed near the reflector to disperse heat from the infrared portion of the light passing through the reflector; A movable color filter mechanism fastened to the frame on a passage of the light beam to change the color of the light beam; And at least one electric motor for driving the color filter mechanism. The illuminating device according to claim 1, wherein the heat pipe includes heat conducting pins disposed on an outer side of the frame. The illuminating device according to claim 1, wherein the heating tube is made of metal. 10. The motor of claim 1, further comprising: a thermally isolated motor mount having low thermal conductivity for fastening the motor to the frame; A heat protection plate for supporting the motor mount; And a heating tube having a fin shape coupled to the electric motor. The lighting device of claim 1, wherein the housing includes vents for facilitating air flow through the housing. The lighting device of claim 1, wherein the frame includes vents for promoting air flow through the frame. The lighting apparatus of claim 1, further comprising a joint attached to the housing, the joint having motors for moving and tilting the housing. 8. A lighting device as recited in claim 7, further comprising means for thermally protecting said joint beam from said housing. 8. The lighting apparatus of claim 7, further comprising electronic devices that receive a remote control signal and control the motor and the motors installed in the housing. The lighting apparatus of claim 1, further comprising a plurality of light control plates fastened to the frame to block direct light from the light beam. The lighting apparatus according to claim 1, further comprising means for thermally isolating said electric motor from said frame and fastening said electric motor to the outside of said frame. An electric motorized lighting device comprising: a housing for enclosing a light source in a free air-flow enclosure; Reflector means having means for reflecting light from said light source to form a light beam and passing hot wires from said light source; Means for dissipating heat from the reflector and the light source; Means for selectively changing the light beam having movable color filter means disposed on the passage of the light beam to change the color of the light beam; Electric motor means for driving said color filter means; Means for dissipating heat generated by the electric motor means; And means for isolating an air-flowing envelopment surrounding the motor means from an air-flowing enveloping state surrounding the color filter means. 13. The motorized lighting device of claim 12, further comprising ventilation means for promoting free air-flow through the housing. The motorized lighting device of claim 12, further comprising a joint means for suspending the housing having means for pivoting the housing in a direction in which the housing moves. 15. The motorized illuminating device according to claim 14, further comprising means for isolating an air-flowing envelopment surrounding the housing from an air-flowing enveloping condition surrounding the joint beam means.