DE3312747A1 - Underwater lighting fixture - Google Patents

Abstract

Underwater lighting fixture for fountains or the like, having a lighting fixture housing (20) with a concave light-reflecting surface (22) and an incandescent lamp (26, 27) which is positioned in the space that is defined by the concave light-reflecting surface (22), and a lampholder (25) which is mounted on a support (126) that is sealingly engaged with the housing (20). Submerging the housing (20) cools the concave light-reflecting surface (22) and thereby preserves it, bearing in mind that it is subjected to high temperatures which are generated by the incandescent lamp (26, 76). The positioning of the incandescent lamp (26, 76) is determined by its length, the desired degree of focusing of the light being produced by setting the incandescent lamp (26, 76) relative to the reflecting surface (22). <IMAGE>

Description

Underwater light

The invention relates to an underwater light, which is particularly suitable for Water fountains, swimming pools and the like is used.

Various underwater lights are available that.

usually used for water fountains (fountains) to to increase the display effect of the fountain and to create a swimming pool To create evening lighting. Sealed spotlight units are available as underwater lights particularly effective. The sealed radiator units usually have a concave reflective surface made of glass to reflect light is coated in silver. The front of the sealed unit is made of glass and is partially designed in such a way that either focused or diffuse light exit.

Submersible sealed radiator units tend to be bulky, which results from the adaptation to the dimensions of the sealed radiator.

Unfortunately, sealed radiator units are not sufficient worldwide available, and in some cases' they don't offer all voltage ranges-s that are worldwide exist, so that submersible lamp units that have sealed radiators, can only be used to a limited extent.

Other types of submersible lamps use standard incandescent lamps; however, these are of low intensity.

Another lighting device that has a high intensity, refers to the common quartz halogen lamp. These incandescent lamps usually have an elongated or cylindrical shape. The encapsulation is a quartz vessel in which the filament is in a halogen gas. The output radiation of this light is of very high intensity; because the lamp works at a very high temperature, which is between 17,000 and 18,000 F. When arranging such a lamp in submersible Devices is the reflective surface that is usually inserted into the Housing used separate reflector is formed, overheated. The reflective The surface is burned or discolored, with the result that the reflectivity is considerable is reduced so that the intensity of the light is lost.

Quartz halogen lamps were used as swimming pool lighting, wherein the housing for the incandescent lamp is immersed in water so that the housing is cooled. An example of such a pool light is the model A 400 available from the PEM Fountain Company. This device has a frustoconical housing in which the lamp is arranged. The heat of the lamp which heats up the flat surface of the truncated cone is by dissipating heat into the pool water c3directs. The positioning of the bulb is relative to the flat surface of the Housing fixed.

The underwater light (submersible lamp device) copes with the problems listed above in that a compactly built luminaire is present that is the degree of focus from a spotlight area to a floodlight area is easily adjustable and variable.

The invention relates to a submersible and hermetically sealed Underwater light that has a housing for an incandescent lamp that is concave has a light-reflecting inner surface.

Tii lamp holder support is on the housing below the reflective Area arranged. The lamp socket carrier is joined together to form a seal with the housing and forms g accordingly. An elongated high temperature incandescent lamp is in a Lamp socket used, which is attached to the carrier. The housing has a Opening at the bottom of the reflective surface, the nunla with the lamp holder flees. The elongated lamp runs: through the opening into the space that is from the reflecting surface is defined. the Longitudinal axis of the Incandescent lamp coincides with the main axis of the concave light-reflecting surface add 3mmen.

The housing, which is submerged in use, is exposed to the surrounding water chilled to there. Reflectivity from the concave light reflecting surface to be obtained if -this generated by the incandescent lamp in operation high temperatures is applied.

The positioning of the lamp holder is determined by the length of the elongated incandescent lamp predetermined, wobci the incandescent lamp so relative to cler concave reflective surface is placed that the desired degree of focus of light is achieved.

The lamp holder carrier is interchangeable, so that different positions are available for the incandescent lamp relative to the concave reflective surface.

The housing is cast from metal, for example from bronze, and has a concave machined surface.

The concave surface can be plated with chrome to reduce the reflection of light to achieve, whereby the water surrounding the housing causes an effective cooling, which discoloration or destruction of the chrome plated reflective surface prevented.

Further advantageous refinements of the invention are set out in the subclaims listed.

The drawings illustrate the invention in several exemplary embodiments, namely show: FIG. 1 a perspective view of a Ssring fountain, FIG. 2 is an exploded view of an underwater light, FIG. 3 is a sectional view of FIG assembled underwater light according to FIG. 2, FIG. 4 shows a sectional view of a Underwater light with different lengths of the incandescent lamp, Fig. 5 is a sectional view an underwater light equipped with two positions of the same length Shows incandescent lamp, which is predetermined by two different lamp holder supports will.

One of the main concerns with any underwater light installation is it ensure that the water does not come in any way in contact with the electrical wires or cables leading to the lighting device, can come. To ensure this, all lighting devices are submersible tightly or hermetically sealed. Because these units are sealed, the build-up of heat becomes a problem.This problem is usually resolved by that the lighting device is immersed in water.

As described above, when using high-temperature GJüblanipen occurs the problem of heat dissipation is all the more apparent. The underwater light according to the invention has a concave reflective surface which is integrally connected to the housing is, whereby the strand is quickly carried away from the surface to their To maintain brilliance and easy discoloration; to avoid overheating. In the Fig. 1 is essentially a fountain nozzle and pump 10 dargeslellt which in Operation shoots a jet of jets marked 12 upward into the air. It is understandable that such fountain jets are several meters in height protrude above and can vary in height during operation. For lighting and coloring of the fountain jets are different types of submersible lighting devices 14 available.

Each lighting device can be held in various ways for example on a stand 15 connected to the lamp housing. To supply the lighting device 14, the cable 16, which is connected to a suitable watertight box 18 is connected. It is understandable that with different Heights of the water jet different focal distances are necessary for the light beam are.

Fig. 2 shows the underwater light 14 disassembled State. The underwater light consists of a housing 20 that is inside it has a concave reflective surface 22. An opening 24 is on the floor or arranged and aligned in the base region of the concave reflective surface with a socket 25 for the incandescent lamp 26. The incandescent lamp 26 protrudes through the opening 24 through to the space formed by the concave reflective surface. The longitudinal axis 29 of the incandescent lamp coincides with the major axis 23 of the concave reflective Area 22 together.

A lamp socket carrier 126 has the lamp socket 25 on this is attached. The electrical cable 16 is in the base portion 28 of the lamp socket and inserted into the base of bracket 126 by means of a standard type of pressure seal lead screw assembly 30 sealed. The lamp socket carrier 126 is sealing with an expanding Flange area 32 of the lamp housing 20 in engagement. The generally designated 34 open end of the housing stands sealingly with a protective transparent cover 36 engaged. To create a seal with the top of the housing, is the edge web 40 of the transparent protective cover of a rubber seal 38 and pressed against the housing by means of a pressure ring 42. The type and The way in which these components are constructed is shown in detail in FIG.

It can be seen from Fig. 2 that the underwater light is constructed in this way is that for the bulb replacement or the lamp socket replacement a very easy assembly and disassembly can be done. In addition, there is the lamp holder carrier 126 easily removable from the widening flange area of the housing 20, so that this carrier can be replaced more easily.

Fig. 3 shows a section through the assembled underwater light 14. The lamp housing 20 can consist of various residual materials that are suitable for underwater use. This material is preferably bronze. The housing can be cast and has a machined inner surface 22 to achieve the desired concave shape. After training the smooth surface 22 is plated with chrome to make the surface light reflective to train.

As mentioned and in more detail in ig. 3, the opening 24 is aligned of the lamp socket 25, which is attached to the lamp socket carrier 126 by means of threaded screws 44 is attached. The incandescent lamp has a high-temperature ceramic base area 46, which is screwed into the ceramic receiving part 48 of the lamp socket 25. The incandescent lamp is a quartz-halogen type. Here is the lamp film envelope made of quartz, and the filament 50 of the incandescent lamp is surrounded by a halogen gas. The color of the light beam can be changed by the protective cover 36. Different colors are possible to give a desired glow in green, blue, red, yellow, purple u:; w, to achieve.

To make sure that the underwater light with the open end 34 of the housing is completely sealed, a seal 38 is provided which encapsulates the edge web 40 of the lens cap 36, the pressure ring 42 is required, to press the seal 38 against the collar 52 of the housing 20. The collar 52 has a recess 54 which receives the seal 38. The surface of the recess 54 has a plurality of V-shaped grooves 56. With the bolts 58 that are in the threaded holes of the collar 52 are screwed in, the rubber seal 38 is pressed into the grooves 56, thereby improving the seal and shaping it to prevent water from entering to prevent the luminaire housing.

To seal the lower area of the underwater light is the Arrangement made so that the lamp socket carrier 126 is formed accordingly is to be sealingly engaged with the lower portion of the housing 20. The housing 20 has an outwardly widening flange area 32, the has a flat collar 62. The lamp socket carrier 126 has a flange 64, which has a recess 66 for receiving a rubber O-ring 68. When tightening the threaded bolt 70 in the threaded bores 72 of the collar 62 becomes the O-ring 68 pressed against the collar 62 around the lamp holder support and the expanding To seal the flange area 32 of the lamp housing 20.

When using a quartz halogen lamp, radiation is generated which, when placed directly on the rubber seal 38, made of neoprene rubber or the like exists, strikes, the sealing material decomposes and useless as a seal power. To prevent this degradation of the rubber seal, the reflective one extends Surface 22, which is worked into the housing 20, upwards to above the collar surface 54, thus forming a lip 74 that extends completely around the perimeter of the reflective Surface 22 extends and prevents radiation from lamp 26 from being incident directly on the Sealing material 38 falls.

If the underwater light 14 is completely or hermetically sealed, so it can be immersed in the water. The Leucilten housing 20 has a Wall area 21, which - as already said - is cast from bronze.

The wall 21 has essentially the same thickness in to the Area that forms the reflective surface 22.

A submerged housing 20 removes the heat from the bulb 26, which the reflective surface 22 heated by the reflective surface 22 by the Wind 21 dissipated because it is surrounded by cooling water.

This direct heat transfer, which removes the heat from the reflective Transports surface 22 away, ensures that the surface does not overheat, so that the brilliance of the chrome-plated surface is retained.

Chrome plating is far cheaper than silver plating, although chrome is not that durable. The case allows the use of the easy replaceable high-temperature incandescent lamp 26 due to the water-cooled concave shape the reflective surface. The housing 20 has the shape of a in cross section "Hour glasses" with a reduced neck 33 at dpr junction of the light reflecting Area 21 with the widening flange area 22. That in the dimensions Reduced material in the area of the neck 33 resists the transport of heat from the Wall 21 to the widening flange area 22, which the temperature in the lamp socket carrier, in which the electrical wires are located, reduced. Heat that to which I am expanding Area transferred is drained by the surrounding water.

m the degree of focus of the light radiation from the underwater light to vary, the position of the incandescent lamp 26 relative to the focal point of the concave reflective surface 22 can be changed. This variation of position the incandescent lamp relative to the reflective surface 22 can be through various ways be achieved.

For example, as shown in Fig. 4, in the the same Lamp socket carrier 126 of different lengths incandescent lamps 26 are used. at a longer lamp does not focus all of its light radiation. This causes a floodlight effect. The construction of the underwater light is the same as those in Fig. 3, the naming of the reference numerals for the parts of the underwater light are the same. The lamp socket 25 is on the lamp socket carrier by means Threaded screws 44 attached. The positioning of the socket 25 relative to the reflective surface 22 is determined by the stop area 78 of the mount 26. By varying the position of this stop area 78 relative to the reflective Surface 22 varies the position of the incandescent lamps 26 or 76 (FIGS. 4 and 5, respectively).

Fig. 5 shows two different positions for the stop area, which are designated by 78 and 78a: For the same incandescent lamp 76 there are two Positions, once - shown in dashed lines - denoted by 76 if the lamp socket 25 rests on the stop 78 of the lamp holder carrier, and on the other hand in one second position 76a, with the lamp socket 25 on the stop 78a of the lamp socket carrier 126a is at rest. In creating an interchangeable lamp socket carrier 126, different ones are possible Positions for the incandescent lamp 76 relative to the reflective surface 22 possible, where the position depends on the desired degree of light output. the end For this reason, only one housing is required for the underwater light, and through Changing the length of the light bulb or when changing the lamp holder carrier can the positioning of the incandescent lamp relative to the surface 22 can be created.

According to another exemplary embodiment of the clip mount 25 the O-ring seal 66 is held in place as shown in i] FIG. Positioning only the stop in the version 78 is variable. The lower terminal screw 80 remains the same for the different socket types, with the cable to the lamp socket 25 remains the same as denoted by 82 and 84 in FIG.

By arranging and enabling the use of high-temperature incandescent lamps a selectable degree of focus is created, ranging from a floodlight range to Sufficient to a headlight area without the reflective surface being replaced must become.

Although only preferred embodiments of the invention in detail have been described, it is understandable to a person skilled in the art, that this made variations do not deviate from the inventive idea or are outside the scope of the appended claims.

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Claims (14)

Claims: underwater light that is submersible and hermetically sealed is not shown by a housing (20) for an incandescent lamp (26,76), having a concave light reflective inner surface (22); one on the case (20) below the reflective surface (22) arranged lamp holder carrier (126), which is sealingly joined to the housing (20) and adapted accordingly is; an elongated high temperature incandescent lamp (26,76) inserted into an on the support (126) attached lamp socket (25) is inserted; an opening (24) of the housing (20) in the base region of the reflective surface (22), wherein the opening (24) aligned with the lamp socket (25); a transparent lid (36) for the open End of the housing (20) which is arranged sealingly on the housing (20); the stretching the elongated incandescent lamp (26,76) through the opening (24) into the through the reflective Area (22) defined space; the longitudinal axis (29) of the incandescent lamp (26,76) with the main axis (23) of the concave Surface (22) collapses; the housing (22) submerged in use, around the concave light reflecting surface (22) to cool and maintain the high temperatures which is exposed during the operation of the incandescent lamp (26,76) are generated; the positioning of the lamp holder (25), which is predetermined by the length of the elongated incandescent lamp (26,76), where the incandescent lamp (26,76) in such a way relative to the concave reflective surface (22) is placed so that the desired degree of focus of the light is achieved. 2. Unterwasserleuhte according to claim 1, d a d u r c h g e k e n n z (e 1 c h n e t that the lamp socket carrier (126) with the lamp socket attached to it (25) the placement of the incandescent lamp (26,76) relative to the reflective surface (22) determined. 3. Underwater light according to claim 2, d a d u r c h g e k e n n z e i c h n e t that the lamp socket carrier (126) has a stop area (78), to which the lamp socket (25) is attached, that the lamp socket carrier (126) is removable and interchangeable with other lamp holder supports that the others Larnp socket carrier is distinguished by the distance between the stop area (78) and the Housing opening (24) differ, and that this distance the desired variation the degree of focus of the light is determined. 4. Underwater light according to claim 1, d a cl u r c h g e k e n n shows that the focus gray: the light from a spotlight effect up to a floodlight effect, and that the (; lühlampe (26,76) partially slightly above the circumference of the widest part of the concave reflective Area (22) is if the floodlight effect is desired. 5. Underwater light according to claim 1, d a d u r c h g e k e n n z E i c h n e t that the transparent cover (36) has an outer, in a rubber seal (38) encapsulated edge web (40) that clamping means for clamping the Rubber seal (38) against the housing (20) are provided to the cover (36) with to seal the housing (20), and that the housing (20) has a circumferential lip (74), which protrudes beyond the rubber seal (38) to the direct, from the bulb (26,76) outgoing To prevent light exposure of the rubber seal (38). 6. Underwater light according to claim 5, d a d u r c h g e k e n n z e i c h ne t that the peripheral lip (74) is a continuation of the concave reflective Is surface (22) which extends over the rubber seal (38). 7. Underwater light according to claim 1, d a d u r c h g e k e n n z e i c h e t that the incandescent lamp (26, 76) can be exchanged with incandescent lamps of different lengths is to vary the degree of focus of the light. 8. Underwater light according to claim 1, d a d u r c h g e k e n n shows that the housing (20) has a downwardly widening flange area (32), on which the lamp socket carrier (126) engages in a sealing manner, around the entrance to prevent water, and that the widening flange area (32) and the The lamp socket carrier (126) can be cooled by immersion in water to prevent overheating the electrical connection. 9. Underwater light according to claim 8, d a d u r c h g e k e n n shows that the housing (20) is roughly the shape of an hourglass (hourglass) has a reduced neck (33) at the junction of the reflective Surface (22) and the widening flange area (32) to have that opening (24) runs inside through the neck (33), and that the reduced in size Housing material in the area of the neck (33) is resistant to the propagation the heat from the reflective surface (22) to the flared flange area (32). 10. Underwater light according to claim 1, d a d u r c h g t k e n n z c i c h n e t that the housing (20) is made. cast metal with an incorporated concave surface (22) and that the machined surface (22) is chrome-plated is about an eflective reflection of the light drifting from the incandescent lamp (26,7f,) to achieve. 11. Underwater light according to claim 10, d a d u r c h g e k e n n z e i c h n e t that the housing (20) is cast from bronze. 12. Underwater light according to claim 10 or] 1, - d a -d u r c h g It is noted that the housing (20) is in the section of the reflective Flat () (22) has essentially the same wall thickness, the heat dissipation to the surrounding water the chrome-plated concave light-reflecting surface (22) cools. 13. Underwater light according to claim 1, d a d u r c h g e k e n n notices that the elongated incandescent lamp (26,76) is a quartz halogen lamp with screw base for screwing into the corresponding screw lamp socket (25) is. 14. Underwater light according to claim 6, d a d u r c h g e k e n n z e i c h n e t that the housing (20) has a recess (54) for receiving the seal (38) has, and that the recess (54) is provided with a plurality of annular grooves (56) Has sealing surface to the seal between the seal (38) and housing (20) to improve.