EP0395802A1

EP0395802A1 - Device for lighting or heating

Info

Publication number: EP0395802A1
Application number: EP89303226A
Authority: EP
Inventors: Yoshiro Nakamatsu
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-03-31
Filing date: 1989-03-31
Publication date: 1990-11-07
Anticipated expiration: 2009-03-31
Also published as: DE68918934T2; DE68918934D1; ES2061978T3; EP0395802B1

Abstract

A device for providing light or heat comprises a cylinder (1) closed at its lower end where a lamp (3) is present, ventilation holes (7) being present in the region of the lamp. The top of the cylinder is open (18). A reflector (14), preferably a plane mirror (15) on one side and a concave mirror (16) on the other, is mounted above the mouth (18) and is held by a bracket (10) connected to the cylinder (1).

Description

The invention relates to a device for lighting or heating which is multipurpose and versatile.
In one aspect, the invention provides a multipurpose lighting or heating device comprising a cylinder closed at one end and open at the other, ray transmitting means located in the cylinder, a movable reflector connected by an arm to the cylinder and located at a position spaced from the open end of the cylinder to receive rays from the ray transmitting, means, a portion of the cylinder tapering towards the closed end of the cylinder, ventilation holes being present in the tapering portion for entry of air to flow past the ray transmitting means towards the open end of the cylinder.
Preferably the ventilation holes are radially spaced about the tapering portion of the cylinder.
The ray transmitting means may take a variety of forms, e.g light lamp, a heat ray lamp or the like providing visible light and/or infrared radiation.
Preferably, the bracket is connected to the outside of the cylinder. In other embodiments the bracket is connected to a carrying handle for the device. In one embodiment, the bracket includes means to receive a plate to be located in the path of the rays, e.g.s to illuminate a film or magnify an object, the plate being transparent.
Preferably, mounting means are present at or near the closed end of the cylinder for mounting the device horizontally or on a vertical surface. The device may be connected to a vertical stand.
Exemplary purposes of the invention are as follows:

1. To make it possible to read books while lying down.
2. To provide an easily removable light spot without a moving lamp.
3. To provide an easy change in a spot area without a moving lamp.
4. To provide an easy change in light intensity without a changing switch.
5. To provide a device usable as a make-up mirror.
6. To provide a device usable as a shaving mirror.
7. To provide a non-glare light.
8. To provide a lighting device which does not reflect light from a reading surface.
9. To provide a lighting device which does not warm a person's head while reading by having the heat escape upwardly.
10. To provide a lighting device which is good for brain activity because the brain is not heated.
11. To provide a lighting device requiring a smaller electric power because of superior lighting efficiency.
12. To provide longer life for a bulb because of cooling by a chimney effect.
13. To provide a small, compact, and collapsible to 1/2 lighting device for storage and transportation convenience.
14. To provide a lighting device which can be placed anywhere without a clamp and which is usable as a photo copy light.
15. To provide a lighting device having a low centre of gravity which makes it stable so that it does not fall down.
16. To provide a lighting device which does not result in a hanging head.
17. To provide a lighting device which is attachable to a wall.
18. To provide a lighting device having no moving parts and which is trouble-free.
19. To provide a mirror for health purposes.
20. To provide a device which changes room atmosphere such as by providing shade on the ceiling, and to make the ceiling look higher and the room look wider by directing the light to the ceiling.
21. To provide a lighting device usable with various adapters such as for infrared heaters, photo negative film viewer, etc.

In order that the invention may be well understood it will now be described by way of example only with reference to the accompanying drawings, in which:

Figure 1 is an elevation of one device of the invention;
Figure 2 is a perspective view thereof;
Figures 3 to 8 illustrate different uses of the device of Figures 1 and 2;
Figures 9 to 12 illustrate modifications of the device of Figures 1 and 2;
Figure 13 is an elevation of the device of Figures 1 and 2 showing measurement points for the data of Tables 1 and 2;
Figure 14 is an elevation of a modified device;
Figures 15 and 16 each show one use of the device when housing a heat lamp;
Figure 17 is an elevation of a device containing a silver or black lamp;
Figures 18 to 20 show other uses of the device of Figures 1 and 2;
Figures 21 to 23 each show tall device of the invention;
Figure 24 shows another tall device and Figure 25 a detail thereof;
Figures 26 to 30 show other tall devices;
Figures 31 and 32 each show a device adapted for easy carrying;
Figure 33 to 37 show a device including a strobe;
Figure 38 to 44 show a device for use in photography; and
Figures 45 and 46 show the device as applied to a chandelier.

The same reference numerals are used wherever possible in describing the different embodiments.
The embodiment of Figure 1 comprises a metal cylinder 1 closed at its lower end and mounted secure on a stand 2. A lamp 3 is mounted in the lower portion of the cylinder 1 and a wire 4 leads from the lamp 3 through the wall of the cylinder 1 to a plug 5. The wire includes a switch 6. A row of air holes 7 is present in the tapered wall 8 at the lower end of the cylinder 1 and opens into the annular clearance 9 between the cylinder 1 and the lamp 3. A cranked arm 10 is mounted by bolts 11 passing through holes 12 in the wall of cylinder 1 adjacent the cylinder mouth 18 and nuts 13 are present at the end of the bolts 11. A reflector 14 is present at the free end of the arm 10 and comprises a plane mirror 15 on one side and a concave mirror 16 on the other. In use a stream of hot air 17 rises from the lamp 3 through the open mouth 18 of the cylinder 1 while the light is directed by the reflector surface according to the side and inclination selected.
As shown in Figure 2, the arm 10 ends in a C-shaped frame 19 having pivot pins 20 received in holes 21 in the edge of the reflector 14. The axis of inclination of the reflector lies substantially in the centre of the light radiation even when the reflector is rotated. The centre of gravity of the reflector coincides with the rotating axis so that fingertip control or pressure is all that is needed to move the mirror. The cranked arm 10 includes a corner 22 for carrying purposes and the crank is shaped so that it is not heated by the stream 17 of hot air.
Different uses of the device of Figure 1 are shown in Figures 3 to 8. As shown in Figure 3, the light can be reflected by the concave mirror 16 on to the open surface of a book 23 to be read by a reader. As shown in Figure 4, a man can use the concave mirror 16 to view his beard for shaving. As shown in Figure 5, a woman may use the plane mirror 15 for making up her face. As shown in Figure 6, the plane mirror 15 may be used to concentrate the light on a book surface or by a different inclination on a part thereof.
Figure 7 illustrates the use of device of Figures 1 and 2 placed adjacent a wall 24. Light from lamp 3 is reflected by the plane mirror 15 off the wall surface 24 and shines indirectly on the human face so that the eye can view the beard in the concave mirror 16 for shaving.
Figure 8 shows the use of the device of Figures 1 and 2 wherein the light is collected at the beard by the concave mirror 16 to brightly illuminate the beard. The eye can view the illuminated beard without glare, since the light shining on the beard is not directed toward the eye.
Figure 9 shows the use of the device Figures 1 and 2 as an image lighting apparatus. An opaque milky white glass plate 25 is placed across the cylinder mouth and a photographic film 26 is placed on the plate. Light from the lamp 3 passes through the film and is reflected by the reflector 14 and the image of the film reflected on the mirror (or enlarged by the concave mirror 16) can be seen in detail by the eye.
Figure 10 shows the use of the device wherein a liquid crystal television set 27 is viewed on a mounting plate 28 pivotally attached to the arm 10. It is possible to see the reflected television image on the mirror 14 and view in detail the image enlarged on the concave mirror 16.
The plate 28 of the device of Figure 11 is pivotally mounted on the arm 10 and when overlying the cylinder mouth 18 is to mount a photo slide 29. Light from the lamp 3 passes through the photo slide 29 and is reflected by the mirror to be projected onto a screen 30 via lens 31. Figure 12 shows the device of Figure 11 wherein, upon pivoting the plate upwardly, light from the lamp 3 reflects directly on the mirror and can be used as lighting apparatus with lens 31.
As described above, a single device can be used as a slide viewer, a liquid crystal television, a slide projector, an illuminating light, etc. The device has the advantage of miniaturized size and multiple utilities and is economical and convenient and it has no idle functions, inasmuch as it is usually used as electric light stand. There is no heat exposed to one's face by reflection on mirror even if a high power lamp is used.

Table 1 shows the temperatures measured at the position 32 of the apparatus of Figure 13, whose dimensions are referred to in Table 2, compared with standard temperatures. This data shows that, in spite of the use of a high temperature minikryton-ref 50W bulb in the cylinder 1, the parts are efficiently cooled by the chimney effect of the air drawn through and the temperature is significantly reduced.

Table 1

	Lamp: 50W	Room Temp: 29.1°C
Measured Point	Position	Measured Temp. C	Temp. Rise C (Measured Temp. Room Temp)	Temp. Rise C Standard	Judgement
32	Centre of Concave Mirror	40.9	11.8	50	Pass
33	Upper End of Cylindrical Body	67.8	38.7	50	Pass
34	Cylindrical Body	68.8	39.7	50	Pass
35	"	66.2	37.1	50	Pass
36	"	64.6	35.5	50	Pass
37	"	62.3	33.2	50	Pass
38	"	60.2	31.1	50	Pass
39	Metal Parts	91.4	63.3	135	Pass
40	Cable	56.7	27.6	55	Pass

Table 2

Length	Description	Distance (mm)
A	Distance of Temperature Measuring Points on Cylindrical Body	25
B	Inside Diameter of Cylindrical Body	90
C	Aluminium Plate Thickness of Cylindrical Body	1.5
D	Overall Height of Cylindrical Body	180
E	Outside Diameter of Bottom of	28
F	Height of Vent	32
G	Diameter of Vent (8 pcs.)	8
H	Distance between Upper Line and Horizontal Face of Mirror	174
J	Diameter of Mirror	180

The device prolongs lamp life, is safe to handle with no fear of burning and does not cause painted film peeling by heat but withstands lengthy usage due to the cooling produced by the chimney effect as described above.
The cooling mouth of this apparatus produces and cools the air stream flowing from the vents 7 to the open mouth 18 of the cylindrical body 1 by a chimney effect. The tapered wall surface 8 is so wide that it is possible to enlarge the hole size or increase the number and disposition of holes 7 to substantially accelerate cooling by the chimney effect.
It is difficult for dust to enter the cylinder 1 through holes 7, and easy for it to escape from the cylinder. If the taper were not present, there would be a reduced chimney effect, poor appearance by increasing size and number of holes, and dust could enter the holes and accumulate inside of the lamp. If the cylinder were straight with holes on a flat bottom fixed to the base plate 2, the support is decreased and the bottom area is relatively less compared with the sloped face of the invention, resulting in a poor chimney effect.
Figure 14 shows an embodiment of the invention wherein a number of transverse louvres 41 of long, narrow and thin plates are mounted vertically and in parallel with one another in the open mouth 18 of the cylindrical body 1. The louvres prevent an observer looking down from being dazzled but light can pass through the louvre 41 and be reflected on the mirror to become illuminating light. The louvres may take a variety of shapes and sizes.
The base 2 may be provided with means to be mounted on a vertical wall, e.g a hook receiving keyhole slot. The lamp 3 may be a small halogen lamp of high efficiency and mirror 14 a dichroic mirror which reflects visible light and filters about 80% of the evolved heat. This provides a soft visible light for reading, etc.
Figures 15 shows an embodiment of the invention wherein the lamp is a heat lamp by which it is possible to send heat from the lamp in various directions to various areas, e.g to heat a sitters body or a face or feet, according to the orientation of the mirror. Figure 16 shows the arrangement wherein heat can be directed to upper or lower directions; at position A of the mirror heat is directed downward, at position B it is directed obliquely upward, and at position C it is directed straight up. This feature is not possible with conventional heating apparatus.
Figure 17 shows a device wherein light from a high pressure silver lamp or black light 3 is reflected by the mirror and objects 42 such as diamond or dust placed in the path of reflected light can be inspected. It is possible in this arrangement to fully observe tested subjects with no heat of the lamp on one's hand.
Figures 18 to 20 show devices wherein the arm 10 is mounted inside the cylinder 1 and it is possible to switch the light of a light spot 43 by concave mirror 16 to different positions 43A, 43B and 43C and to spread light by plane mirror 15 by rotating the mirror.
Figure 20 shows the arrangement of the invention wherein reflected light from the plane mirror 15, with the mirror set at a horizontal position, forms a mood light. The lamp can also illuminate a picture on a wall or ceiling.
Figure 21 shows an embodiment of the invention wherein the lighting device is set on the upper portion of a pole 44 mounted on a floor stand 2, to be above the eye level of a sitting person. Light from the lamp 3 projects upward, e.g above the eye, reflecting on the mirror 14 to become irradiating light changing its lighting direction (A) downwardly. When rotatable mirror 14 is moved to the second position, the light changes to lighting direction (B). The lighting area can be changed by using either the plane face or the concave face of the mirror. For instance, the plane mirror may be used to illuminate a wide area and the concave mirror a narrow one.
The invention, as just described, when compared with conventional combinations of lamps and stands, does not require a large shade, etc above the stand but has stable feeling because of the use of a small mirror. It can prolong the lamp life by inhibiting dust from entering the lamp by the mirror covering lighting device, since heat of the lamp is well spread by the chimney effect of the air stream rising up from the vent within the cylinder to cool the lighting device. In addition, the invention has no wasteful flow-out of light but can work with lower electric consumption. The invention also provides remarkable features, not provided in conventional floor stands, such as no dazzling, since the light shines from a higher position than the eye when a person is sitting.
The light may be used as a lantern by shining it on a lower portion than the plane mirror by setting the mirror at a horizontal position. The light may be directed upwardly to the ceiling of a room by setting the mirror at a vertical position.
Figure 22 shows the use of this invention wherein the cylinder is elongate to increase the chimney effect to spread the heat of the lamp.
As shown in Figure 23, the upper end of the arm 10 may have two side arms 45 attached to a rotary grip 46 at the top of the pole 44 for holding both sides of the mirror. Rotation of the grip rotates the mirror. Rotation of the grip can vary the shape and disposition of the light spots.
The elongate cylinder or pole 44 can be transparent or translucent to produce illuminating light. Instead of a transparent pole, a translucent pipe may be used or an optically clear pole such as acrylic resin, etc, or pipe containing a bundle of optical conductive fibres such as glass fibres, etc may be used. A light collecting mirror such as a regular mirror or dichronic mirror can be set directly underneath lamp 3.
Figures 24 and 25 show an embodiment of the invention wherein a pole 44 comprising rods or lengths 47 of transparent acrylic resin set on a frustoconical base 2 containing the lamp 3. A dichronic mirror 48 is located within the base 2 to collect the light of the lamp 3 at the lower end of the pole. The base has feet 49 to contact the floor. Vents 7 are set on the upper and lower side surfaces of the base 2 to release the heat of lamp 3 as rays and as a hot air stream. The light of lamp 3 passes up the transparent pole and is reflected off the mirror 14. The light also appears along the pole. Lamp 3, for example, is a lamp which is 24V, 150W and is of a small type and produces strong light.
Figure 26 and Figure 27 show an embodiment of the invention wherein the pipe comprises three sections 50 joined by connectors 51. These connectors comprise male bolts screwable into female nuts, the nuts being provided at the ends of each pipe section. As shown in Figure 28 the ends of the pipe sections may instead be received in a common splice connector 52. The pipe sections contain a wire cord 4, and can be separated with no trouble at different positions so that the lighting height is variable. The connector 46 may have a plain or ornamented appearance, e.g to simulate bamboo.
Figure 29 shows an embodiment of the invention wherein the pipe is translucent and the lamp 3 is set in the lower portion of the transparent supporting bar pole 44 of acrylic plastic, etc. Two rows of vents 7 are present adjacent the lamp 3 at the upper and lower portions of the base pipe section to radiate the heat.
Figure 30 shows an embodiment of the invention wherein the supporting pole is freely telescopic and comprises pipe sections 53
A lighting device, for example, of the type illustrated in Figure 1, may be mounted on upper pipe section, the pipe section extending into a lower pipe section. The inside of the upper end of the pipe section is lined with rubber, the upper pipe section extending therethrough with friction. As a consequence, the upper pipe section may be moved vertically, to effect the rising and/or lowering of the lighting device, the upper pipe section being held, however, at any set position by the friction of rubber. The lighting device may be supplied with a coiled wire extending internally of the pipe sections, the wire thereby being expandable and shrinkable. Also, the wire may extend externally of the pipe sections.
In a still further embodiment of the invention a carrying handle may be mounted to the cylinder, for example, by screws or bolts. One side of the cylinder 1 may be shaped in the form of a spout, if desired, for ornamental purposes. It is thus apparent that the cylindrical body 1 may have other ornamental shapes, as desired. In the embodiment illustrated in Figure 31, the handle 54 is held to the outside of the cylinder 1 by, for example, screws (not shown) and the arm 10 is threaded into the top of the handle 54. Figure 32 shows another version wherein an arm 10 has a U-shaped configuration with two leg portions, one 10A of the leg portions being mounted on the cylinder 1 and the other leg portion 10B extending upwardly for pivotably mounting the mirror 14. The two portions are screwed together, as shown. In this embodiment, the arm functions to support the mirror and also as a handle.
Lamps according to Figure 1 and according to Figure 32 were placed in a room which was at 25°C room temperature. The temperatures of the handles were measured and the temperature of the handle in the embodiment of Figure 32 was 30°C, which is less than the temperature specified by Laboratories (UL) which requires that the temperature of a handle should be less than 50°C. The arm 10 of Figure 32 is bent once which has the advantage that it can be produced at a lower cost.
A shade hood in the form of a half sphere, may be attached to the upper end of the arm above the mirror. The shade hood has a diameter preferably slightly greater than that of the mirror, the shade hood covering the top of the mirror. This shade hood inhibits dust from falling onto the mirror, as well as inside of the cylindrical body.
Figure 33 shows a device in the form of a photostrobe and which comprises strobe 60, a lamp 3 comprising a strobe bulb 61, a curved mirror 62 reflecting upwards the light of the strobe bulb, arm 10 having a wave shaped washer 64 and which supports mirror 14 and is arranged to rotate and stop at any desired angle on axis 63. The arm 10 slides up and down along a guide 64A for carrying and storage. Figure 34 shows a device wherein frame 65 supporting and rotating mirror 14 about axis 66. The frame can be collapsed to position 65B for storage. The device includes a strobe battery 67 and an infrared lamp 68 for auto focussing distance measurement.
Figures 35, 36 and 37 show a device similar to those just described for video light. Figure 34 shows a device wherein the mirror 14 comprises a dichronic mirror 14A which reflects visible light only, and removes 60% of the thermal rays and further drichronic mirror 14B which removes the remaining 40% of thermal rays. Thus 100% of the thermal rays are removed from light 3 directed onto subject, and a performer on TV is not subjected to great heat.
Figure 36 shows an example wherein the cylinder 1 according to Figure 35 is attached to a video camera by a clip 69.
Figure 37 shows a ceiling mounted device similar to those just described wherein the mirror 14 is moved by a remote-controlled motor 70 to change the direction and spread the light.
Figures 38, 39 and 40 show a device wherein a grip 80 is attached to a camera 81, a hot shoe is set on the grip 80 and a mirror 85 reflecting light from a strobe light source 85 is mounted on grip 80. A cylinder 1 having vent holes 7 may be mounted at the top of the grip about the mirror 85. The camera 81 and grip 80 containing the strobe light are fixed to a grip holder 82 by nuts 83, strobe bulb 84 and reflecting mirror 85 face upwards at the upper portion of grip 80, and mirror 14 reflecting light from the strobe bulb 84 is supported on arm 10, the lower end of which is inserted into a hole 86 in the grip. Strobe bulb 84 is an Xenon gas bulb and the power source of a chargeable NiCd battery 87 is contained within the grip. When carrying these parts the mirror 14 and the arm 10 are removed from the grip.
As shown in Figure 40, if the reflecting mirror having strobe bulb 84 at its centre is supported on the grip so as to move about a pivot 88, it is possible to direct the light directly from the mirror 85. Different lighting can be obtained by rotating the mirror. Thus lighting can bounced off a ceiling with the mirror in the vertical position or it can be focussed by a telephoto of the camera by the concave mirror. Light can be spread for a wide angle photo by the plain mirror surface and downward spot lighting can be obtained using the concave mirror for a close-up photo.
Figure 41 shows a device used with a strobe photo for portrait or commercial photos and wherein the reflecting mirror 85 is set underneath a flat ring strobe bulb 84 and a modelling lamp 89 set at the centre of the strobe bulb. The device includes a case 90 which is pivotally fixed to a stand 9 by nut 92 to make it possible to incline the case 90 at any orientation. The lower end of arm 10 freely moves about axis and is inserted into a hole 93 of the handle 94 of the case 90 so that the centre of one mirror could be maintained with the light axis of strobe bulb 84 and molybdenum lamp 89. Strobe bulb 84 is, for instance, an amber coating quartz circle tube with 2400Ws maximum input. For instance, the power source or battery 252 has 2400Ws maximum output, selectable 2400/1200.800.400.1200Ws output, light adjustable range of FULL to 1/3, 3 circuits linear adjustment.
In order to spread light, it is possible to insert into hole 93 the shaft of an umbrella 95 instead of arm 10 or to set the umbrella elsewhere. Stand 91 can slide up and down a pole 96 by a releasing grip 97, or can move horizontally by releasing lever 98.
It is possible to direct the light of molybdenum lamp 89 through mirror 14 onto a subject by combining molybdenum lamp 89, strobe bulb 84 and mirror 14 and to determine the correct position of the strobe lighting direction by adjusting the angle of mirror 14 and the lighting position to obtain the desired lighting. This is done by watching the light of molybdenum lamp 89 directed to the subject from mirror 3. Once the mirror position has been determined, the photo is shot by lighting strobe bulb 84. In other words, it has become possible to accurately and easily make microscopic adjustment of the spot lighting position of the strobe which was impossible with conventional strobes.
Connector 99 of camera 81 is connected to the power supply by a synchro-cord to synchronously light the strobe when activating the camera shutter. Using a device as shown, it is possible to spot key light on say the nape in a portrait or to light brightly only a section of cake in a commercial photo, which was not previously possible. Also the strobe lighting can be done from a high position and is easily adjusted by moving the mirror. Commercial photography is creative and always looks for new lighting, and the invention enables a photographer to produce an entirely new type of photo.
Figures 42 through 44 show an embodiment of the invention which is an application of lighting for use with video or motion pictures at studios and comprising a light source, mirror and bandoor (there are also occasions where the bandoor is not used) and even if the angle of mirror is changed, the light reflected from the light source on the mirror always passes through almost the centre of the bandoor.
Figures 42 and 43 show that case 100 contains a light source lamp 3, dichronic mirror 101 collecting light from lamp 3 and dichronic mirror 14B reflecting light of lamp 3 on its light axis. Mirror 14B reflects the light of mirror 14. The heat of the light source lamp 101 is removed by the dichronic mirror. The bandoor 102 with four plates is set at the edge of lighting mouth 104265 of case 100 to freely open and close. The light source, reflecting mirror and bandoor are built into the case 100.
Figures 45 and 46 show a device of this invention using a pendant and chandelier wherein the device hangs from the ceiling. In the embodiment of Figure 45, the mirror 14 reflects the light of the lamp 3 and makes it possible to tilt bulb socket 112 at the top end of arm 10 which supports the reflector and changes the light direction. A swivel 113 and an air window 114 is also shown in Figure 45. The swivel 113 is set within bulb socket 112 and the entire body of the mirror and the light source hangs from the ceiling by power supply cord 115 extending from the swivel 113. Mirror 111 can incline at any angle in three dimensions. Power supply cord 115 connects with a cord within arm 10 running to the device.
Figure 46 shows an example of a chandelier which has a plurality of light bulbs 3 in a single cage or reflector for plural mirrors 14.
The invention is not limited to the embodiments shown. In addition to the variations already specified, arms 10 of different heights may be present on opposite sides of the cylinder 1 to provide two reflectors 14. The base 2 may have mounting means, e.g to be connected to a vertical wall or to stand on a separate pole support having a top dish to receive, preferably engage, the base.

Claims

1. A multipurpose lighting or heating device comprising a cylinder (1) closed at one end and open at the other (18), ray transmitting (3) means located in the cylinder (1), a movable reflector (14) connected by a bracket (10) to the cylinder (1) and located at a position spaced from the open end of the cylinder (1) and to receive rays from the ray transmitting means (3), a portion (8) of the cylinder tapering towards the closed end of the cylinder (1), ventilation holes (7) being present in the tapering portion for entry of air to flow past the ray transmitting means (3) towards the open end of the cylinder (18).

2. A device according to Claim 1, wherein the ventilation holes (7) are radially spaced about the tapering portion (8) of the cylinder (1).

3. A device according to Claim 1 or 2, wherein the ray transmitting means (3) is a light lamp, a heat ray lamp or the like providing visible and/or infrared radiation.

4. A device according to any preceding Claim wherein the bracket (10) is connected to the outside of the cylinder (1).

5. A device according to Claim 4, wherein the bracket is connected to a carrying handle (54) for the device (Figure 31, 32).

6. A device according to any preceding Claim, wherein the bracket (10) includes means to receive a transparent plate (28) to be located in the path of the rays, e.g.s to illuminate a film or magnify an object.

7. A device according to any preceding Claim, wherein mounting means are present at or near the closed end of the cylinder (1) for mounting the device horizontally or on a vertical surface.

8. A device according to Claim 7, wherein the device is connected to a vertical stand (44).

9. A device according to any preceding Claim, in combination with a stroboscope (Figures 33 to 37), or a camera (Figures 38 to 44).

10. A device according to any preceding Claim, including a dichroic mirror.