EP2959222B1 - Underwater light and security system - Google Patents

Description

The present invention relates firstly to an underwater spotlight, preferably for installation in a wall niche of a swimming pool, and more particularly to a security system for monitoring the underwater area of a swimming pool. The underwater spotlight comprises a housing whose interior is bordered by at least one translucent front window. At least one camera is arranged in the interior of the housing and at least one light emitter is arranged.

Such underwater lights are used in swimming pools to illuminate the underwater area and can be mounted on the walls of the swimming pool in the area laterally embedded so-called. In order to achieve a desired light intensity and distribution, a conventional underwater spotlight can have a plurality of light emitters or light sources with suitable light output. The light requirement is usually so great that even when using so-called. Energy-saving bulbs in the light emitters during operation, a considerable heat can occur.

Independent of this, a safety system for swimming pools is also known, which has a number of cameras installed under water in the wall of the swimming pool and, for example, connected to a computer. The underwater images can be examined by means of suitable devices, in particular by means of processing software, for the presence of specific image structures which, for example, resemble a human body, in particular in order to recognize a motionless human being. Each camera is housed in a sealed housing for installation on a niche of a swimming pool wall.

In practice, certain typical dimensions have prevailed on the market for built-in tables in the past. The camera housing are therefore designed in terms of shape and size so that they can be mounted in place of a previously built on a swimming pool conventional underwater headlamp after its expansion in the niche. However, this leads disadvantageously to the consequence that then the underwater area in question is illuminated only weaker, which in particular also adversely affects the image quality of the camera. In existing swimming pools, where the number of installation niches is already fixed, this restriction had to be accepted so far. In the new planning of swimming pools, a correspondingly large number of installation tables can be planned for equipping the pool walls with built-in cameras and a sufficient number of built-in spotlights, which, however, leads to a higher outlay and high costs.

Out US 8,172,434 B1 For example, a submersible multi-color LED lighting system is known. US 2008/106422 A1 describes a pool lighting with security alarm and sensor array. Out WO 2012/129976 A2 is an LED projection lamp known. EP 2 383 508 A1 discloses a light for underwater use and a manufacturing method therefor. Out US 2011/0012356 A1 is a swimming pool water inlet generator for connecting lamps known, the generator may also have cameras. US 6,812,970 B1 discloses a video camera system integrated in a standard light housing.

Against this background, the invention has the object, advantageously further develop an underwater headlight of the type mentioned, so that in particular one or more of the restrictions described above can be avoided as much as possible.

The object is achieved according to the invention first and essentially in conjunction with the features that the windshield has a protruding outward on the headlight front molding through which the optical axis of the camera passes in a straight line extension. Such an integration of a camera in an underwater spotlight has been in the prior art, inter alia, due to the limited installation space in niches, wherein the problem described in Heating up in operation exacerbated, as well as, for example, due to the existing in the built-in enclosures for swimming pools with respect. Safety requirements for the design of the housing front not taken into account. The underwater headlamp according to the invention, in the housing of which a camera is arranged, fulfills an installation unit which is intended for installation in only a single installation niche, by means of the light emitter incorporated therein or on the one hand and the camera on the other hand two functions in one. The underwater floodlight according to the invention with a camera integrated therein combines the functionalities of a spotlight and the camera in a built-in unit so that, as in the prior art, two installation niches, but only one common installation niche is required for installation. The external dimensions are preferably chosen so that the underwater floodlight according to the invention with integrated camera can be installed in conventional installation niches of conventional dimensions. Due to the close proximity of camera and light emitters, the field of view of the camera can be brightened up with a desired light distribution. In this case, the imaginary center axis or symmetry axis of the camera is understood as the optical axis of the camera, which extends in a direction perpendicular to its imaging plane through the center of the camera image. As an imaginary geometric line, the optical axis has no defined length. Assigning the optical axis as meaning a limited only to the camera lens length, it is understood that the optical axis occurs in its imaginary rectilinear extension through the translucent front glass. On the other hand, if the term optical axis were to be assigned the meaning that the optical axis has an unlimited length, the optical axis itself extends through the front pane. In other words, according to the arrangement and orientation of the camera in the housing, an imaginary straight line of indefinite length occurs, which coincides with the optical one Axis coincides, through the translucent front glass through. The windscreen may preferably be made of glass, in particular of tempered safety glass. It is expedient to use a glass which is resistant to the contents of swimming pool water according to DIN 19634. It is also preferred that the front pane is designed to be completely transparent or at least in a pane part region through which the optical axis or straight extension of the optical axis of the camera passes. In this case, a degree of clear transparency, which is sufficient for image recording of objects located in the swimming pool, may be sufficient. The camera can preferably have a field of view which is rotationally symmetrical with respect to its optical axis, for example with a viewing angle in the range between 160 ° and 180 °. Depending on the requirements, the housing may, for example, be adapted to a detachable installation on a known installation niche or to a fixed installation. The underwater floodlight according to the invention with a camera integrated therein could also be referred to as an underwater camera with headlamps integrated therein or with its housing, which may comprise one or more light emitters, due to the illustrated dual functionality.

The underwater floodlight according to the invention can be advantageously developed in many ways. There is the possibility that it has several light emitters, between which the camera is arranged. So there is the possibility that the camera field of view is illuminated evenly and in particular in different directions. It is also possible for each light emitter to comprise a light-emitting diode (LED) or, for example, a plurality of LEDs combined in particular to form an LED group. In particular, LEDs can be selected and appropriate means provided, so that the LEDs are variably adjustable in their brightness. In particular, in this context, it is preferred that the underwater spotlight at least a temperature sensor for measuring the temperature in the interior of the housing and a control device which, with a temperature increase in the housing, the brightness of the light emitter, in particular the LEDs, so reduced that a preselected or preselected temperature is not exceeded in the housing. The light emitter or LEDs can be connected, for example, to a ballast suitable for dimming. White and / or colored LEDs can be used. Also suitable are LEDs that can light up in different colors depending on the voltage applied. Preferably, energy-saving LEDs are used, which have a high efficiency, ie give relatively low heat in relation to their light output. It is preferably provided that several, for example, six, LED groups are present, preferably between a respective LED group and the front screen, the LED of the LED group together covering, preferably for each LED having a lens disk is arranged.

It is considered to be expedient that at least two light emitters, in particular LED groups, are arranged so that they lie equidistantly on opposite sides of the camera in a viewing plane perpendicular to the optical axis of the camera on a longitudinal center line perpendicularly crossing the optical axis of the camera Camera are located. In this case, there is the possibility that the lens disks of each of these two LED groups are designed in such a way that light incident from the LEDs exits with an elliptical intensity distribution towards the windshield. In this case, it is preferred that the ellipse main axis which is longer in comparison to the ellipse minor axis is oriented in each case perpendicular to the longitudinal center line and to the optical axis of the camera. Alternatively, the ellipse main axis could, for example, extend parallel to the longitudinal center line.

Alternatively or in combination, two light emitters, in particular LED groups, may be arranged such that they lie in a viewing plane perpendicular to the optical axis of the camera on a first longitudinal line parallel to the longitudinal center line on the two opposite sides of the optical axis and the longitudinal center line perpendicularly intersecting transverse line and in equal distance from the transverse centerline. For example, the lens disks of each of these two LED groups may be designed such that light incident from the LEDs exits toward the windscreen with rotationally symmetrical intensity distribution, for example with a light exit angle of 25 °.

Alternatively or in combination, the underwater floodlight can have two light emitters, in particular LED groups, which are arranged in a viewing plane perpendicular to the optical axis of the camera on a second longitudinal line parallel to the longitudinal center line on the two opposite sides of the one Axis and the longitudinal center line perpendicular intersecting transverse center line and in the same distance from the transverse center line, wherein the first center line and the second center line extend on opposite sides of the longitudinal center line. In these light emitters, for example, it may be provided that the lens disks are designed such that light incident from the LEDs exits to the windshield likewise with rotationally symmetrical identity distribution, for example with one having a comparatively larger light emergence angle of, for example, 40 °.

According to claim 1 it is provided that the front screen protruding outwardly at the headlight front
Form has, through which passes the optical axis of the camera, at least in straight line extension. It is preferred that the formation in the direction predetermined by the optical axis of the camera emerges via a front plane predetermined by the outside of a front panel. Due to the cavity formed in the interior of the molding, the interior of the housing is increased, so that more space for the distribution of heat of the light emitter is present. The formation may have an extension in or parallel to the direction of the optical axis that is in the range of several millimeters or centimeters. This makes it possible, in particular, for the camera to protrude in the direction of the optical axis in relation to the light emitters or LEDs, so as to achieve a greater distance. In particular, the front opening or the front lens of the camera can extend into the formation.

There is the possibility that the windshield has or form a formation, which merges along a peripheral transition region, in particular concavely curved on its outer side, in a flat disc region of the windshield. Alternatively or in combination, it is preferable for the front pane to be convexly curved on its outer side at least in regions or everywhere in the inner pane area bordered by the transition area. A convex curvature is accompanied by a bulge directed away from the interior of the housing. Instead of a curved or rounded configuration of the molding may alternatively be provided a polygonal shape.

In a preferred embodiment, the formation may have a greater extension in a longitudinal direction than in a longitudinal direction perpendicular to the optical axis of the camera Have transverse direction. In particular, a substantially rectangular plan is preferred, the narrow sides outside slightly convex curved. Particularly in connection with this, it is preferable for all the light emitters, with their entire or at least partial emission surface, in particular in each case at least one LED or all LEDs of the light emitter, to be located behind the molding in a projection view directed parallel to the optical axis. There is a possibility that the central disk portion of the molding extending within the circumferential transition portion may be flat on its outside in a cross-sectional plane extending through the optical axis parallel to said longitudinal direction when viewed longitudinally in a longitudinal center portion and convex on both sides thereof is rounded or inclined to the surface in the longitudinal central portion extends, and in a direction parallel to the transverse direction through the optical axis cross-sectional plane when viewed in the transverse direction is convexly rounded throughout or even in a transverse central portion and convexly rounded to its two sides or inclined to the surface runs in the transverse middle section. In this context, could also be spoken of an elongated dome-like configuration of the molding. There is the possibility that the formation comprises a central flat disc region, from the circumference of which the formation on the outside (that is to say on the side remote from the interior) convexly convex or inclined extends as far as the transition region already described. The dimensions (for example, diameter or length and width) of the central flat disk area can be selected to be so large that the camera encompasses the entire camera image through it.

In an alternative embodiment, it is provided that the convex shape is rotationally symmetrical with respect to a geometric center axis of rotation. In this respect, speak of a rotationally symmetrical dome-like shape. There is the possibility that the central axis of rotation coincides geometrically with the optical axis of the camera. In particular, the shape of the shape can at least partially approximate or correspond to the surface shape of a spherical cap. In such a dome-like configuration of the formation is preferred that in a parallel to the optical axis projection view, the light emitters are laterally outside the molding and thereby behind the flat disk area.

According to a further aspect, provision can be made for the camera to have at least one, in particular only one, connection or connecting line for connection to an operating device, which may, for example, be a computer. It is considered appropriate that the camera is connected or connectable with an Ethernet cable and adapted to a power supply by means of "Power over Ethernet" (PoE).

An expedient embodiment is seen in that the LEDs are arranged on an LED board. This can be covered on its side facing away from the LEDs underside with a Wärmeleitfolie, for example. Glued, be. The heat conducting foil can adjoin a metal body at least in an edge area of the LED board. This may, for example, be a metallic outer wall of the housing or a cooling spacer plate made of metal, for example of aluminum or aluminum alloy, adjacent to a metallic outer wall of the housing. There is the possibility that the underwater floodlight only a sealed to the housing connecting cable comprising cables for powering the light emitter, for powering the camera and for data exchange with the camera, wherein it is provided in particular that the connection line comprises an Ethernet cable for the combined power supply and data transmission for the camera.

The invention also includes a security system for monitoring the underwater area in a swimming pool. The safety system comprises one or more of the underwater floodlights according to the invention with a camera integrated therein, wherein the underwater floodlights can have one or more of the features described above and below. The respective camera is, in particular by means of Ethernet connection cable, connected to a central operating device, which may, for example, be a computer. The operating device has image evaluation means, in particular image evaluation software, which is adapted to or at least suitable for the recognition of predetermined structures in the recorded or stored image.

Fig. 1

perspektivisch einen mit einer Kamera ausgestatteten erfindungsgemäßen Unterwasserscheinwerfer, gemäß einem ersten Ausführungsbeispiel;

Fig. 2

den Unterwasserscheinwerfer gemäß Fig. 1 in einer Frontansicht in Blickrichtung II gemäß Fig. 1;

Fig. 3

eine Schnittansicht entlang der vertikalen Schnittebene III - III gemäß Fig. 2;

Fig. 4

eine Schnittansicht entlang der horizontalen Schnittebene IV - IV gemäß Fig. 2;

Fig. 5

den Unterwasserscheinwerfer gemäß den Fig. 1 bis 4 in einer perspektivischen Explosionsansicht;

Fig. 6

eine perspektivische Rückansicht des Unterwasserscheinwerfers in Blickrichtung VI gemäß Fig. 1;

Fig. 7

perspektivisch ein erfindungsgemäßes Sicherheitssystem gemäß einem bevorzugten Ausführungsbeispiel mit zwei erfindungsgemäßen Unterwasserscheinwerfern gemäß Fig. 1 bis 6 in einer Einbausituation in einem ausschnittsweise dargestellten Schwimmbecken;

Fig. 8

in einer Schnittansicht entlang Schnittebene VIII - VIII aus Fig. 7 die Einbausituation des einen Unterwasserscheinwerfers;

Fig. 9

in einer im Vergleich zu den vorangehenden Figuren perspektivischen Vergrößerung eine der mittleren Linsenscheiben des Unterwasserscheinwerfers gemäß Fig. 1 bis 8;

Fig. 9a

eine Draufsicht in Blickrichtung IXa aus Fig. 9;

Fig. 9b

eine Seitenansicht in Blickrichtung IXb aus Fig. 9a;

Fig. 10

in einer perspektivischen Vergrößerung eine der in Blickrichtung von Fig. 2 oberen Linsenscheiben des Unterwasserscheinwerfers gemäß Fig. 1 bis 8;

Fig. 10a

eine Draufsicht in Blickrichtung Xa aus Fig. 10;

Fig. 10b

eine Seitenansicht in Blickrichtung Xb aus Fig. 10a;

Fig. 11

in einer perspektivischen Vergrößerung eine der in Blickrichtung von Fig. 2 unteren Linsenscheiben des Unterwasserscheinwerfers gemäß Fig. 1 bis 8;

Fig. 11a

eine Draufsicht in Blickrichtung XIa aus Fig. 9;

Fig. 11b

eine Seitenansicht in Blickrichtung XIb aus Fig. 9;

Fig. 12

perspektivisch einen erfindungsgemäßen Unterwasserscheinwerfer mit Kamera gemäß einem zweiten bevorzugten Ausführungsbeispiel;

Fig. 13

perspektivisch die Frontscheibe des Unterwasserscheinwerfers gemäß Fig. 12;

Fig. 14

perspektivisch einen erfindungsgemäßen Unterwasserscheinwerfer mit Kamera gemäß einem dritten bevorzugten Ausführungsbeispiel;

Fig. 15

eine Draufsicht in Blickrichtung XV -XV gemäß Fig. 14 und

Fig. 16

perspektivisch die Frontscheibe des Unterwasserscheinwerfers gemäß Fig. 14.

The invention will be further described below with reference to the accompanying figures, which illustrate preferred embodiments. It shows:

Fig. 1

perspective view of a camera equipped with a underwater floodlight according to the invention, according to a first embodiment;

Fig. 2

the underwater spotlight according to Fig. 1 in a front view in the direction of II according to Fig. 1 ;

Fig. 3

a sectional view taken along the vertical section plane III - III according to Fig. 2 ;

Fig. 4

a sectional view along the horizontal section plane IV - IV according to Fig. 2 ;

Fig. 5

the underwater headlamp according to Fig. 1 to 4 in an exploded perspective view;

Fig. 6

a perspective rear view of the underwater headlamp in the direction of VI according to Fig. 1 ;

Fig. 7

perspective view of a security system according to the invention according to a preferred embodiment with two underwater headlamps according to the invention Fig. 1 to 6 in a built-in situation in a partially illustrated swimming pool;

Fig. 8

in a sectional view along sectional plane VIII - VIII Fig. 7 the installation situation of an underwater headlamp;

Fig. 9

in one in comparison to the preceding figures perspective enlargement one of the central lens discs of the underwater headlamp according to Fig. 1 to 8 ;

Fig. 9a

a plan view in the direction of IXa Fig. 9 ;

Fig. 9b

a side view in the direction of IXb Fig. 9a ;

Fig. 10

in a perspective magnification one of the in the direction of Fig. 2 upper lens discs of the underwater headlamp according to Fig. 1 to 8 ;

Fig. 10a

a plan view in the direction Xa Fig. 10 ;

Fig. 10b

a side view in the direction Xb Fig. 10a ;

Fig. 11

in a perspective magnification one of the in the direction of Fig. 2 lower lens discs of the underwater headlamp according to Fig. 1 to 8 ;

Fig. 11a

a plan view in the direction XIa Fig. 9 ;

Fig. 11b

a side view in the direction XIb Fig. 9 ;

Fig. 12

perspective view of an underwater projector according to the invention with camera according to a second preferred embodiment;

Fig. 13

in perspective, the windscreen of the underwater headlamp according Fig. 12 ;

Fig. 14

perspective view of an underwater projector according to the invention with a camera according to a third preferred embodiment;

Fig. 15

a plan view in the direction XV -XV according to Fig. 14 and

Fig. 16

in perspective, the windscreen of the underwater headlamp according Fig. 14 ,

With reference to the FIGS. 1 to 6 an inventive underwater floodlight 1 is presented according to a first preferred embodiment. This includes a generally designated by the reference numeral 2 housing whose interior 3 is bounded by a translucent front panel 4. In the interior 3, six light emitters 5, which in each case have three light-emitting diodes (LED) 7 combined into one LED group 6, are arranged in the example. In addition, a camera 8 is arranged according to the invention in the interior 3 of the housing 2, the imaginary optical axis 9 extends in its straight extension 9 'in the camera viewing direction through the translucent front panel 4. The LEDs 7 of all light emitters 5 are arranged on a common LED board 10, wherein the power supply is effected by means of printed circuit boards on the LED board 10, not shown in the figures. At each light emitter 5, the three associated LEDs 7, which form an LED group 6, with respect to an imaginary radiator center radially spaced and spaced in pairs by 120 ° on the circumference. Each light emitter 5 each comprises a lens disk 11, which forms a lens 12 for each LED 7. Between the lenses 12 supports 13 are formed on the underside of the lens disk 11 (see also Fig. 9 to 11 ), which serve to support on the LED board 10. The supports 13 are supported on the LED board 10, so that between each LED 7 and the front screen 4, a lens 12 is located.

How the particular Figures 2 and 5 illustrate, the camera 8 is with respect to a viewing plane perpendicular to the optical axis 9, which Drawing plane of FIG. 2 corresponds, disposed between the light emitters 5. In the example, it is provided that two light emitters 5 or LED groups 6 are arranged in the said viewing or projection plane such that they are equidistant from the camera 8 on an imaginary longitudinal center line 14 perpendicular to the optical axis 9 of the camera 8 located on opposite sides of the camera 8. The lenses 12 of the associated lens disks 11 are formed such that light incident from the LEDs 7 exits toward the windshield 4 with an elliptical intensity distribution. For example, ie not necessary, it is provided that the beam angle related to the ellipse main axis oriented perpendicular to the longitudinal center line 14 is approximately 43 ° and the beam angle related to the ellipse parallel axis oriented parallel to the longitudinal center line 14 is approximately 17 °.

In the example, the underwater spotlight comprises two further light emitters 5 or LED groups 6, which with respect to the viewing plane of FIG FIG. 2 are arranged so that they are located on a longitudinal longitudinal line 14 parallel spaced from the first longitudinal line 15 on the two opposite sides of the optical axis 9 and the longitudinal center line 14 perpendicular intersecting transverse center line 16 and at a same distance from the transverse center line 16. The lens panes 11 of these light emitters 5 are designed such that light emerging from the LEDs 7 exits towards the front pane 4 with rotationally symmetrical identity distribution, wherein in the example the angle of emission is approximately 25 °.

The underwater headlamp 1 described in the example has two more light emitter 5 or LED groups 6. These are with respect to in FIG. 2 shown, that is perpendicular to the optical axis 9 viewing plane on a longitudinal longitudinal center line 14 parallel spaced second longitudinal line 17th on the two opposite sides of the optical axis 9 and the longitudinal center line 14 perpendicular intersecting transverse centerline 16 arranged in the transverse center line 16 equal distance. The first longitudinal line 15 and the second longitudinal line 17 are located in the in FIG. 2 shown viewing plane on the two opposite sides of the longitudinal center line 14 at approximately the same distance from this. In the example, it is provided that the lens disks 11 of these two light emitters 5 arranged along the longitudinal line 17 are designed such that light incident from the LEDs 7 approaches the windshield 4 with rotationally symmetrical intensity distribution at a light exit angle of approximately 40 ° selected in the example exit.

How the particular FIGS. 3 to 5 illustrate, the windshield 4 has a molding 18, which has approximately the same disk thickness as the adjacent planar disk region. The recess 18 merges along its peripheral, closed at the periphery transition region 19 in the example concave on the outside in the planar disk portion 26 on. The planar disk region 26 extends between the transition region 19 and the outer disk edge 27 along the entire edge periphery of the windshield 4. The molding 18 is directed away from the LED board 10, so that the inner space 3 compared to a continuous flat windshield through the molding 18 is increased. In the direction of the optical axis 9, the optics or receiving opening 20 of the camera 8 is raised above the light emitters 5 and protrudes slightly into the hollow interior of the molding 18. The camera 8 is aligned so that its optical axis or its rectilinear extension 9 'passes through the center of the formation 18 from the underwater headlight 1 to the outside.

The underwater floodlight 1 comprises a front panel 21 detachably connected to the housing 2, screwed in the example, in the end wall 22 of which a central passage opening 23 for releasing the front screen 4 is formed in this area. In the example, the formation 18 of the windshield 4 emerges outwardly in cross-section through the through-opening 23 in the form of a cross-section. In other words, the formation 18 protrudes outward or forward on the headlight front 24 formed in the example of the front panel 21 and the windshield 4. The formation 18 protrudes outwardly from the interior 3 via a front plane determined by the end wall 22 of the front panel 21. In relation to the FIGS. 1 to 6 described first embodiment, it is provided that the front screen 4 is curved convexly in the area framed by the transition region 19 disc area 25 everywhere in at least one direction with respect to its outer side.

FIG. 2 illustrates that in the first embodiment, the formation 18 in the viewing plane perpendicular to the optical axis 9 of the camera 8 has a greater extension in a longitudinal direction L than in a transverse direction Q perpendicular thereto. In this case, a substantially rectangular floor plan is selected, the narrow-side edges run slightly convex rounded outside. It is, also in conjunction with the Figures 3 and 4 , clearly that in the first exemplary embodiment, in a projection view directed parallel to the optical axis 9, all the light emitters 5 with at least a respective portion of their emission surface (the emission surface is formed by the lens disks 11 in the example, but not necessary) behind the formation or are arranged within the outline of the formation. In particular from the Figures 3 and 4 It is clear that in the first embodiment of the central disc portion 25 of the Forming 18, which extends within the peripheral transition region 19, on its outer side (ie on the side facing away from the headlight interior) in a cross-sectional plane extending parallel to the longitudinal direction L through the optical axis 9 (see. FIG. 4 ) when viewed in the longitudinal direction L in a longitudinal central portion a flat and convexly rounded to its two sides and in a direction parallel to the transverse direction Q through the optical axis 9 extending cross-sectional plane (see. FIG. 3 ) when viewed in the transverse direction Q is continuously convex rounded. The Figures 3 and 4 also show that the wall thickness of the front pane 4 made of transparent safety glass in the region of the formation 18 in the example is approximately the same as in the transition area 19 and the outer edge 27 of the front pane 4.

Further components of the underwater headlamp 1 described by way of example illustrate the exploded view in FIG FIG. 5 , The housing comprises a shell-like housing body 28 made of cast metal, in particular gunmetal or bronze, which forms a housing bottom 29 and housing side walls 30 and on the outside of which in the region of the housing bottom 29 cooling fins 31 for heat removal from the interior of the headlamp protrude. In the example, it is provided that the underwater headlamp 1 containing the camera 8 has only a single connection lead 33 sealed to the housing 2, which comprises both cables for powering the radiators 5, for powering the camera 8, and for data transmission for the camera 8 , With a cable bushing 32 is designated, through which said connecting line is sealed passed through the housing wall. In the housing body 28 is a cooling spacer plate 34 which has a central passage opening and is made in the example of aluminum inserted. In assembled condition, the LED is supported Board 10 with its side facing away from the LEDs 7 underside on the edge of the cooling spacer plate 34 from. In order to improve the heat dissipation from the LED board 10, the LED board 10 is on its side facing away from the LEDs 7 bottom with a in FIG. 5 pasted with the reference numeral 35 heat conducting foil which rests directly on the cooling spacer plate 34. The camera 8 is located on a either one-piece or composed of several parts camera board 36, and 37 is a driver board. The camera 8, the LED board 10, the camera board 36 and the driver board 37 are preassembled (for example, by means not shown in the figures connecting means such as by means of stud bolts) to form a unit. The screen 38 has through holes, which can also serve to hold the lens discs 11. 39 and 40 are applied to the back or on the front of the windscreen 4 fitting seals. In the circumferential region of the holding frame 41 through holes are provided, by means of which the holding frame 41 and arranged behind components described by means of screws 43 sandwiched on the shell-like housing body 28 to Screw assembly of the housing 2 with its internals. From the narrow sides of the holding frame 41 are in the frame plane laterally outwardly from projections 44, each having a threaded bore 45. In this can be screwed through corresponding through holes 46 each a screw 47 for mounting the front panel 21. On the holding frame 41 are in the frame plane of its longitudinal edges centrally outwardly from projections 48, through which through holes 49 extend.

As with respect to FIG. 8 described, this allows the detachable attachment of the underwater headlamp 1 to a wall 53 of a swimming pool 54th

In the wall 53 is a recessed to the swimming pool 54 through recess 52 sunk. The installation niche 52 is bounded by a thin-walled lining 51, which merges into a flange 55 resting on the surface of the wall 53. The flange 55 carries threaded holes 56 into which screws 50 inserted through the through-holes 49 can be screwed for mounting. Shape and dimensions of the installation niche 52 are chosen so that between the liner 51 and the housing 2 both the back and the side remains a gap. The front panel 21 has two opposite sides of its intended for the windshield 4 through hole 23, in the example in the installation position shown above and below the through hole 23, in its end wall 22 and in a wall 22 adjacent to the end wall shell wall 57 each have a plurality of flow passage openings 58, through which a water exchange between the pool 54 and the space 59 takes place, which is formed between the underwater headlight 1 and the liner 51. The water 60 in the space 59, when the housing 2 heats up in operation by the light emitters 5, is also heated, so that in the in FIG. 8 shown vertical section of the arrangement may cause an upward flow, cf. the arrows 61. This causes cool water to flow into the gap 59 through the lower flow passages 58 from the pool, while heated water 60 returns to the pool 54 from the upper flow passages 58 from the gap 59. This causes a cooling of the underwater headlight 1, wherein the heat transfer is promoted by the cooling fins 31. By the various measures described to reduce the heat generation and improve the heat distribution and -Discharge, which can be implemented individually or in combination, in particular excessive heating of the camera 8 in the underwater spotlight can be prevented.

FIG. 7 schematically shows a preferred embodiment of a security system 62 according to the invention for monitoring the underwater area in a swimming pool 54. This includes in the example two underwater floodlights 1, which are underwater headlights 1 according to the invention. Each underwater spotlight 1 is connected by means of only one connecting line 33 to a central operating device 63, which in the example is a computer. In the example shown, each of the cameras 8 is connected to the operating device 63 by means of an Ethernet connecting cable leading through the connecting line 33 (not separately shown in the figures), so that the power supply of the camera 8 and the data exchange with the operating device 63 are shared by means of the Ethernet connection cable (ie without additional cables) takes place. The power supply of the light emitter 5 is carried by extending in the connecting cable 33 cable. The operating device 63 has image evaluation means, in particular suitable software, which is adapted to a recognition of predetermined contours, in particular to the contour of a human body.

The Figures 9 . 9a and 9b show a known lens disk 11 with molded-on supports 13, wherein the lenses 12 are adapted in conjunction with a corrugation of the lens disk to an elliptical light exit distribution. The ellipse main axis runs parallel to the ribs of the corrugation. In the in the FIGS. 1 to 6 underwater headlights 1 were described these lens disks in the light emitters 5 are selected on the longitudinal center line 14 by way of example.

The Figures 10 . 10a and 10b show slightly different lens disks 11. Each lens provides a rotationally symmetric light emission. These lens disks 11 were selected in the example in the light emitters 5 on the longitudinal line 15.

The Figures 11 . 11a and 11b show another variant of the lens discs 11. These also provide with their lenses rotationally symmetric light emission. These lens disks were selected in the light emitters 5 on the longitudinal line 17.

With reference to the Figures 12 and 13 an inventive underwater floodlight 1 is presented according to a second preferred embodiment. For better clarity, like reference numerals are used for corresponding elements or features (as in the following third exemplary embodiment). The difference of that with respect to the FIGS. 1 to 6 described embodiment is that in the variant according to Figures 12 and 13 the shape 18 of the windscreen 4 has a different shape. While the formation 18 in this case also has a greater extent in a longitudinal direction L than in a transverse direction Q perpendicular to the optical axis 9 of the camera 8, here the central slice area 25 through which the optical axis 9 or whose extension meets, formed with a substantially rectangular bounded, flat flattening 64. Their extension is perpendicular to the optical axis 9. The longitudinal dimension of the flat 64 is denoted by a and the transverse dimension b. The central one Disc portion 25 of the formation 18 extending within the circumferential transition region 19 is flat on its outside in a plane parallel to the longitudinal direction L through the optical axis 9 extending cross-sectional plane when viewed in the longitudinal direction L in the longitudinal central portion a and convexly rounded on both sides , In a cross-sectional plane running parallel to the transverse direction Q through the optical axis 9, the central disk region 25 is flat on the outside, when viewed in the transverse direction Q in the transverse center section b, and convexly rounded on both sides thereof.

With reference to the FIGS. 14 to 16 an underwater floodlight 1 according to the invention is presented according to a third preferred embodiment. This, in turn, differs by the design of the shape 18 of its windshield 4 of the previously explained embodiments. The convex formation 18 is rotationally symmetrical with respect to a geometric center axis of rotation. As a result of the assembly selected in the example, the rotational center line coincides geometrically with the optical axis 9 of the camera 8. The shape of the molding 18 is approximated in the area surrounded by the transition region 19 disc portion 25 of a spherical cap. Outside the transition region 19, the windshield 4 made of transparent safety glass runs flat up to its outer edge 27. In a projection view directed parallel to the optical axis 9, the light emitters 5 in this example are located outside the molding 18 behind the flat disk region 26 of the windshield 4.

All disclosed features are essential to the invention. In the disclosure of the application, the disclosure content of the associated / attached priority documents (copy of the prior application) is hereby incorporated in full, including for the purpose of features of these documents in Claims of the present application to include. The subclaims characterize in their optionally sibling version independent inventive developments of the prior art, in particular to make on the basis of these claims divisional applications.

Claims (16)

1. Underwater floodlight (1), in particular for installation in a wall recess in a swimming pool, in particular for a security system for monitoring the underwater region of a swimming pool, comprising a housing (2) of which the interior (3) is delimited by at least one transparent front pane (4), at least one light emitter (5) being arranged in the interior (3), and at least one camera (8) being arranged in the interior (3) of the housing (2), characterised in that the front pane (4) has a shaped portion (18) which protrudes outwards at the front of the floodlight (24) and through which the optical axis (9) of the camera (8) passes in linear extension.
2. Underwater floodlight (1) according to claim 1, characterised in that the underwater floodlight (1) comprises a plurality of light emitters (5), between which the camera (8) is arranged.
3. Underwater floodlight (1) according to one or more of the preceding claims, characterised in that each light emitter (5) has a light-emitting diode (7) (LED) or an LED group (6) comprising a plurality of, in particular three, LEDs (7), the LED (7) or the LEDs (7) being in particular variably adjustable in brightness.
4. Underwater floodlight (1) according to one or more of the preceding claims, characterised in that two light emitters (5), in particular LED groups (6), are arranged such that they are located, in a viewing plane perpendicular to the optical axis (9) of the camera (8), on opposing sides of the camera (8), equidistantly from the camera (8), on a longitudinal centre line (14) which perpendicularly intersects the optical axis (9) of the camera (8), the lens panes (11) of each of these two LED groups (6) being designed in particular such that light incident from the LEDs (7) emerges towards the front pane (5) so as to have an elliptical intensity distribution, the ellipse major axis that is longer in comparison with the ellipse minor axis being in particular oriented perpendicularly to the longitudinal centre line (14) and to the optical axis (9) of the camera (8) in each case.
5. Underwater floodlight (1) according to one or more of the preceding claims, characterised in that two light emitters (5), in particular LED groups (6) are arranged such that they are located, in a viewing plane perpendicular to the optical axis (9) of the camera (8), on a first longitudinal line (15) spaced in parallel from the longitudinal centre line (14), on the two opposing sides of a transverse centre line (16) which perpendicularly intersects the optical axis (9) and the longitudinal centre line (14), and equally spaced from the transverse centre line (16), the lens panes (11) of each of these two LED groups (6) being designed in particular such that light incident from the LEDs (7) emerges towards the front pane (4) so as to have a rotationally symmetrical intensity distribution.
6. Underwater floodlight (1) according to one or more of the preceding claims, characterised in that two light emitters (5), in particular LED groups (6), are arranged such that they are located, in a viewing plane perpendicular to the optical axis (9) of the camera (8), on a second longitudinal line (17) spaced in parallel from the longitudinal centre line (14), on the two opposing sides of a transverse centre line (16) which perpendicularly intersects the optical axis (9) and the longitudinal centre line (14), and equally spaced from the transverse centre line (16), the first centre line (15) and the second centre line (17) extending on opposing sides of the longitudinal centre line (14), and the lens panes (11) of each of these two LED groups (6) being designed in particular such that light incident from the LEDs (7) emerges towards the front pane (4) so as to have a rotationally symmetrical intensity distribution.
7. Underwater floodlight (1) according to one or more of the preceding claims, characterised in that the front pane (4) has a shaped portion (18) which transitions into a planar pane region (26) of the front pane (4) along an edge transition region (19), in particular so as to be concavely curved on the outside.
8. Underwater floodlight (1) according to one or more of the preceding claims, characterised in that the front pane (4) is convexly curved on the outside thereof in its entirety or at least in regions in the pane region (25) surrounded by the transition region (19).
9. Underwater floodlight (1) according to one or more of the preceding claims, characterised in that the convex shaped portion (18) is formed so as to be rotationally symmetrical relative to a geometric central axis of rotation, the central axis of rotation in particular coinciding geometrically with the optical axis (9) of the camera (8), and the shape of the shaped portion (18) in particular approximating or corresponding at least in regions with the surface shape of a spherical segment.
10. Underwater floodlight (1) according to one or more of the preceding claims, characterised in that, in a view of projection oriented parallel to the optical axis (9), the light emitters (5) are located outside the shaped portion (18) behind the planar pane region.
11. Underwater floodlight (1) according to one or more of the preceding claims, characterised in that, in a viewing direction oriented parallel to the optical axis (9) of the camera (8), the shaped portion (18) has, in a longitudinal direction (L), a greater extension than in a transverse direction (Q) perpendicular to the longitudinal direction (L).
12. Underwater floodlight (1) according to one or more of the preceding claims, characterised in that, in a view of projection oriented parallel to the optical axis (9), all or part of each emission surface, in particular at least one LED (7) or all LEDs (7) in each case, of all the light emitters (5) is located behind the shaped portion (18).
13. Underwater floodlight (1) according to one or more of the preceding claims, characterised in that the central pane region (25) of the shaped portion (18), which region extends within the peripheral transition region (19), on the outside thereof, in a transverse plane running parallel to the longitudinal direction (L) through the optical axis (9), when viewed in the longitudinal direction (L), is planar and convexly rounded on either side thereof in a longitudinal centre portion (a) and, in a transverse plane running parallel to the transverse direction (Q) through the optical axis (9), when viewed in the transverse direction (Q), is continuously convexly rounded or, in a transverse centre portion (b), is planar and convexly rounded on either side thereof.
14. Underwater floodlight (1) according to one or more of the preceding claims, characterised in that the camera (8) has at least one connection or connecting line for connection to an operating device (63), the camera (8) being in particular connected or connectable to an Ethernet cable and being adapted to a power supply by means of "Power over Ethernet" (PoE).
15. Underwater floodlight (1) according to one or more of the preceding claims, characterised in that the underwater floodlight (1) only has one connection line (33) that is sealed to the housing (2) and comprises cables for supplying power to the light emitters (5), for supplying power to the camera (8) and for transmitting data for the camera (8), the connection line (33) in particular comprising an Ethernet cable for combined power supply and data transmission for the camera (8).
16. Security system (62) for monitoring the underwater region in a swimming pool (54), comprising one or more underwater floodlights (1) according to one or more of the preceding claims, wherein the particular camera (8) is connected, in particular by means of Ethernet connecting cables, to a central operating device (63), in particular to a computer, wherein the operating device (63) has image analysis means which is adapted or is suitable for the identification of predetermined structures, in particular using software.

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