EP2407708A2 - Self-aligning standard lamp - Google Patents

Abstract

The lamp (2) has a light source and a housing, where a transparent or translucent light-emitting portion and a convex, particularly hemispherical bottom portion are formed. The light source outputs two different active optical signals for two different positions of the lamp. The two different positions of the lamp are different from an initial position.

Description

The present invention relates to a lamp, in particular a floor lamp, which aligns without external force in a predetermined, preferably vertical position.

A luminaire according to the preamble of claim 1 is known from the document DE 196 53 081 A1 known. This lamp also has a tilt switch, so that when a tilting movement of the lamp from the equilibrium position, the lamp is turned on. As soon as the luminaire is released and returns to its original equilibrium position by itself, the circuit for the luminous means is interrupted, thus switching off the luminaire. Such tilt switch for floor lamps are known from other documents. The in the publication DE 40 17 839 A1 The tilt switch described above disconnects the lamp from the circuit as soon as the floor lamp is tilted too high or falls over so as to prevent a fire or other damage that could be caused by the heated lamp. The in the publication DE 20 2004 011 456 U1 described tilt switch makes it possible to operate with each deflection of the lamp from the equilibrium position a switching mechanism for switching on and off the lamp.

Thus, only mechanisms are known from the prior art, which enable a position-dependent switching on and off a lamp. These lights are designed for adults and, due to the limited functionality, create little incentive for children, especially for toddlers, to spend more time with the light.

It is therefore an object of the present invention to provide a child and toddler fair lamp, which on the one hand meets the highest safety requirements for children and on the other hand creates enough incentives to playfully deal with the light and in interaction with the light with the To discuss the issue of balance.

The object is achieved by the features of claim 1. According to the invention, the at least one light source emits (at least) two different active optical signals in (at least) two different positions of the luminaire. Thus, the child or any other person who engages the lamp receives feedback from different optical signals as the lamp is moved and brought from one location to another. This gives the child a feeling for different directions and angles of inclination.

Since the lamp always wants to move back to its original position, the child is always required to bring the lamp out of its equilibrium position to change the current active optical signal into another. Since the lamp, after arbitrary or involuntary touching or experimenting, can not lose its equilibrium and self-erect, neither the child nor the lamp will be damaged. Due to the dynamics of the luminaire and the "reward" in the form of different active optical signals, the child enjoys time and again the "aha" experiences and the curiosity and the spirit of discovery especially small children spurred.

The different active optical signals may differ in their light color, light intensity or in their flashing frequency. It should be noted that no light signal, for example, when the light is off or temporarily not lit, is to be understood as no active optical signal in the context of the invention. Furthermore, it should be clarified at this point that instead of a non-changing optical signal, a predetermined sequence of successive optical signals which is output without the lamp changing its position, can also be understood as an active optical signal, wherein the inventive Light then outputs different sequences in different positions. In particular, different color effects provide an additional exciting incentive for children. According to the invention, the luminaire outputs different active optical signals as a function of the position of the luminaire. However, the number of different signals with regard to sensory overload should be adapted to the age of the child, so as not to overtax the child. In older children, Adolescents and adults, however, may be more incentivized by a higher number of signals. Of course, it is also conceivable to supplement or replace one or more of the optical signals with acoustic signals. The positions of the luminaire may differ in the direction of inclination, angle of inclination and / or rotation about the Längsache the luminaire and cause correspondingly different active optical signals. So z. B. increase the light intensity all the more the light is deflected from its equilibrium position. This gives the child or the person on the light intensity feedback how far the lamp is removed from its equilibrium position.

Preferably, the luminaire housing has substantially the shape of an egg whose center of gravity is chosen so that it stands upright in the equilibrium position. The height of the egg can be arbitrary, but it has been shown that a height in the range of 50 to 80 cm, in particular 60 cm, has proved to be advantageous, since this corresponds approximately to the growth of a two-year-old child who plays with the relative unconsciously can train your own balance. By constantly dodging the egg-shaped lamp, the child is always required to reorient his posture. If the child moves or pushes the light in one direction, it must shift its own body weight and bring it back together with the light back into the middle position. The playful experience of lighting up the various active optical signals, especially color changes, and finding the equilibrium position in which the light is e.g. A signal that differs more clearly from the other optical signals makes the child unconsciously practice the balance with pleasure. The interplay between imbalance and balance trains the child's perception, which also supports the child's sense of balance through the visual perception of the different active optical signals.

The basic shape of an egg is particularly advantageous because it has no corners, edges or protrusions, so that parents can leave their children play unattended with the light, because you can not hurt this. In addition, damage caused by the lamp to others Furnishings could be caused minimized. Furthermore, an egg provides limited opportunities for the child to hold on to it, so that the balance of feeling of the child is all the more required.

As materials for the housing a variety of materials are conceivable, but it should be ensured that the housing neither breaks nor splinters. In addition, the overall weight of the lamp should be chosen so that on the one hand, the lamp can bring itself from an infant from the equilibrium position, on the other hand, however, also offers a certain resistance. By moving the lamp back and forth, the physique of the children can also be strengthened. Against the background that the object according to the invention can not only be a luminaire but also a play object, the total weight of the luminaire should, however, be chosen so that it can also be transported from room to room or outdoors.

If the housing is formed in two parts, creates a modular system, so that z. B. the light exit portion, which complements the hemispherical bottom portion to form an egg-shaped lamp body, can be replaced. So z. B. conceivable that the light exit section has the shape of a cartoon character, a pop star or another idol of the child and the lamp is used by a now older child less than game device as a normal room light or backlight. The connection of the housing parts should identify a seal, so that the lamp can also be used outdoors and no moisture enters the lamp housing.

Preferably, the two different layers of the luminaire are different from the starting position or equilibrium position. This creates an incentive for the child to move the light in different directions. This trains the feeling for different directions of inclination.

If the lamp in the initial position or after returning to the initial position outputs an active optical signal that is different from the at least two other active optical signals, this has not only the advantage that the child a Receives feedback that the lamp is back in its equilibrium position, but it can be assigned to the equilibrium position a special active optical signal. So z. B. conceivable that the lamp emits a light with reduced brightness in their equilibrium or rest position, so that the lamp has a minimum energy consumption when the child no longer plays with the lamp and forgets to turn off the lamp. Furthermore, the luminaire in the equilibrium position can give off a kind of nightlight or slumber light, since babies or children often fear in a completely dark room.

On the other hand, the rest position can also be assigned a bright white light signal, which serves as a, in particular manually controllable standard illumination.

Alternatively, it is also conceivable that after returning the lamp to its original position, the last output active optical signal is output. This makes it possible that by tilting the lamp in a certain direction causes a signal change for the subsequent equilibrium position. If appropriate markings are provided on the luminaire and the luminaire is inclined in a corresponding direction, a specific optical signal, such. As a specific light color, to be selected, which is to serve after self-return of the lamp in its equilibrium position as a permanent light signal. This gives the child the opportunity to choose between permanently output optical signals, without having to tilt the light constantly in a particular direction. Thus, several children may e.g. guess what color the lamp will light up when it returns to its equilibrium position.

It may be provided a corresponding choice to adjust the optical signal in the equilibrium position as needed. Thus, the equilibrium position of the lamp according to the invention for babies with a dormer function, for adolescents with a special color effect and for adolescents and adults are covered with a normal standard lighting, so that the lamp can accompany a long life span of a person.

If the lamp according to the invention on a substrate such. B. a fluffy carpet or a meadow is placed outdoors, it may be that the lamp due to friction on the bottom section by itself can not quite bring into the vertical equilibrium position. In order to prevent the lamp in this case emits a signal that does not correspond to the starting position, but a certain tilt position, and therefore may have an increased energy consumption or does not give the desired optical signal, the lamp according to the invention may be set so that the lamp only changes its optical signal when the lamp is tilted by a certain angle to the side. This is preferably in a range of 5 ° to 20 °.

In addition, the light can have two selectable operating modes. In a first operating mode, the active optical signal in each case depends on the position of the lamp, whereas in the second operating mode, regardless of the current position of the lamp, the same signal is emitted.

This ensures that the luminaire always emits the same optical signal, even if the lamp is inadvertently brought out of equilibrium. The two modes of operation can be achieved by two independent lighting circuits, so the one lighting circuit can have lighting means such. As white LED strips that emit a white light and which can serve as a location-independent standard lighting, whereas the second circle of light has bulbs that allow special color and lighting effects, such. B. RGB LED strip. Thus, both lighting circuits can be manually switched on and off independently. The first lighting circuit can be a manually activatable lighting circuit, while the second lighting circuit is controlled depending on the position.

The use of LEDs is particularly advantageous because they give no or only limited heat and therefore you must not be afraid that the child playing with the light burns at this. Furthermore, LEDs can be dimmed, so that in a simple way different lighting effects can be effected. Furthermore, infinitely variable color mixtures can be produced.

Even if a white light can be generated with the RGB LEDs, it is advantageous to provide separate white LEDs, since these have a lower power consumption than white-glowing RGB LEDs.

When the bottom portion is cylindrically convexly curved, the lamp can be tilted from the equilibrium position only in two directions. It is therefore advantageous to form the bottom section substantially hemispherical so that the luminaire can be tilted from the equilibrium position in all lateral directions and outputs different active optical signals as a function of the inclination direction and / or inclination angle and / or rotation angle. However, the lamp can not only be tilted from the vertical position, but also be placed in a spinning or tumbling state, in which the lamp successively outputs different active optical signals according to the respective inclination direction and / or inclination angle and / or rotation angle until it gradually returns to their equilibrium position. As a result, sexy lighting effects can be created without the child having to change the direction of inclination itself.

In order to be able to detect the respective position of the luminaire relative to the starting position, the luminaire has a corresponding position detection device, which can be formed by one or more position sensors. A control device controls the at least one light source according to the detected position. Of course, mechanical and chemical tilt sensors can be used. However, electronic position sensors have the advantage of being lighter in weight, faster in response and much more accurate. Instead of a position sensor, an acceleration sensor can also be used as position detection device.

Although the number of inclination directions and the number of corresponding output optical signals need not be limited, the inclination directions corresponding to the four basic directions can be divided into corresponding four angle segments. If the at least one light-emitting means is designed as one or more RGB LEDs, they can be controlled so that at corresponding inclination in a first angular segment the red LED, in a second angular segment the yellow LED, in a third angular segment the blue LED and in a fourth angular segment the yellow and the blue LED are driven, so that the light red, yellow, blue or green lights. The control of the LEDs can be stored in the control device as a solid deposited or manually selectable programs. A simple control results when four position sensors are arranged in each case in the four basic directions, ie in a cross, so that an accurate determination of the direction of inclination is possible on the basis of the detection results of the four position sensors.

Preferably, the lamp has a self-sufficient power supply. This power supply can be done via a battery or a rechargeable battery. For safety reasons, the battery should be leak proof. A corresponding charging interface for charging the battery can be arranged in a depression in the bottom section or accessible via an opening in the bottom section. The recess or lid is preferably at the lowermost point of the bottom portion so as to be concealed in the vertical equilibrium position. Furthermore, the depression or the lid can be closed by a cover. The lid should have a gasket so that the lamp can also be used outdoors.

The light can also on the housing, such. B. in a recess in the bottom section, a main switch for switching on and off of the power supply. This can prevent the electronics from unnecessarily consuming power when the lamp is not in use.

In addition, an operating mode selector switch may be provided on the housing. However, it is advantageous if the selection of the operating mode via a remote control and a corresponding receiving device is provided on the lamp.

In order to achieve a higher lighting effect, the bottom portion may also be transparent or translucent. In this case, the electronic Components are housed in a centrally arranged, preferably cylindrical housing. In this case, at least one light source can be provided around this housing.

When the lamp according to the invention is deflected in one direction and then released, the lamp begins to rock back and forth until it gradually reaches its rest position. If the lamp does not start to wobble, the optical signal changes between the two inclination directions associated signals. In order to avoid that the two signals are interrupted again and again by the signal associated with the initial position, the control of the signal associated with the equilibrium position can only take place when the luminaire remains in the equilibrium position for a predetermined period of time.

Preferably, the signal control can be configured so that when the lamp is deflected from its initial position by hand in one direction and held there for a predetermined period of time, the instantaneous optical signal can be stored and still be issued in continuous operation, even if the Light after rocking back and forth rocks and finally returns to the starting position or is returned by hand to the starting position. In order to recognize that the predetermined amount of time has been reached and the lamp can be released, a visual or audible signal recognizable to the user, e.g. a short blink or beep.

A further aspect of the present invention relates to a generic self-righting luminaire, in which the luminaire outputs (at least) two different active acoustic signals in (at least) two different positions of the luminaire. This variant is particularly useful for visually impaired children, so they can exercise their sense of space and balance playfully and achieve the same learning effects as non-visually impaired children.

Another aspect of the present invention relates to a generic self-righting light in which two modes of operation are selectable, wherein in the first operating mode, the light in (at least) two different layers of Luminaire outputs (at least) two different active optical signals, whereas in the second operating mode, the luminaire outputs (at least) two different active acoustic signals in (at least) two different positions of the luminaire. This lamp is particularly suitable for integrative nurseries and gardens in which visually impaired and non-visually impaired children play with the lamp according to the invention.

Another aspect of the present invention relates to an egg-shaped body having at least one acoustic signal generator, wherein the center of gravity of the body is arranged so that the egg-shaped body moves back by itself in a vertically oriented starting position when it has been moved by an external force from this and the at least one acoustic signal transmitter outputs two different acoustic signals in two different positions of the egg-shaped body.

Brief description of the figures

• Fig. 1 shows a lamp according to a first embodiment of the invention, which is moved by a child from the equilibrium position;
• Fig. 2 shows a light exit portion and a bottom portion of the lamp according to the first embodiment in a separate state;
• Fig. 3 shows a partial sectional view of the lamp according to the first embodiment;
• Fig. 4 shows a plan view of the bottom portion of the lamp according to the first embodiment;
• FIGS. 5A, 5B and 5C show the lamp according to the first embodiment in three different layers;
• Fig. 6 shows in plan view four different layers of the lamp according to the first embodiment; and
• Fig. 7 shows a lamp according to a second embodiment of the present invention.

Description of preferred embodiments of the invention

Fig. 1 shows a lamp 2 according to the invention, which is brought by a child K from its vertical equilibrium position. The luminaire 2 has a single-shaped housing 4 with a light exit section 6 and a bottom section 8, which in Fig. 2 be shown separated from each other. When the housing 4 is placed freely movable on a ground, the housing aligns itself vertically, even if the housing, as by an external force, is brought out of the equilibrium position, as shown in the Fig. 1 you can see. The luminaire 2 according to the invention thus functions according to the principle of a "standing mannequin". This is because in the equilibrium position, the overall center of gravity of the lamp 2 is lower than the center of curvature of the bottom section 8. Due to the hemispherical shape of the bottom section 8, the lamp 2 can deflect in all directions.

In a preferred embodiment, the height of the housing 4 is about 60 cm, the maximum diameter 42 cm and the height of the bottom portion alone about 21 cm, so that the ratio of light exit portion and bottom portion corresponds approximately to the golden section. This size is matched to the size of a two-year-old child (about 80-95 cm), which should practice his sense of balance with the help of the lamp according to the invention. Of course, other sizes are also possible and can be adapted to the respective target group.

Like from the Fig. 2 Furthermore, it can be seen, the light exit section 6 and the bottom portion 8 each consist of thin-walled shells, preferably made of a thermoplastic, such. B. polypropylene. The light exit section 6 is transparent or translucent, while the bottom section is opaque, so that the technology housed therein is not visible from the outside. The material chosen for the housing should never break, splinter or burn.

Fig. 3 shows a partial sectional view of the lamp 2, from which it can be seen that all the essential components of the lamp 2 are located in the bottom portion (see also Fig. 4 ). On a radially inwardly projecting and circumferentially encircling reinforcing ring 7 are located on the light exit portion 6 side facing two glued and juxtaposed LED strips 10 and 12. The LED strip 10 consists of a plurality of white LEDs. The LED strip 12 consists of a variety of high-power RGB LEDs.

On the lower side of the circumferential reinforcing ring 7 are evenly spaced or arranged at 90 ° to each other position sensors 14. On a lower end of the bottom portion 8 arranged circular end plate 16 is located at a central location a support plate 18 for the electronics. On the support plate for power supply, a battery 20 and a control device 22, consisting of a circuit board 24 and a microprocessor 26, arranged in a housing 28. Below the end plate 16 is an additional weight 30 for weighting the lower portion of the bottom portion 8, so that the lamp 2 always aligns in an upright position. In a centrally located in the bottom portion recess 32 is a charging interface 34 for charging the battery 20 and a child-resistant main switch 36 for switching on and off the lamp 2. After charging the battery 20, a charging cable 38 can be removed from the charging interface 34, so that the lamp 2 is self-sufficient with energy and you do not run the risk of using the lamp 2 to trip over the charging cable. In addition, so the luminaire according to the invention can also be used outdoors. The recess 32 in the bottom portion can be closed by a lid, not shown.

When arranging the individual components, it must be ensured that the overall center of gravity of the luminaire 2 is as deep and as central as possible, so that the luminaire 2 aligns itself vertically.

The function of the luminaire 2 is controlled by the programmable microprocessor 26. This is controlled by the four position sensors 14, the α from a predetermined angle of z. B. 15 ° a corresponding signal to the Send microprocessor 26. After processing of the signal received at the microprocessor 26 of the position sensors 14 then the LEDs 10, 12 are driven accordingly and supplied with power from the battery 20.

Fig. 5A shows the lamp 2 in its initial or equilibrium position. The longitudinal axis of the egg-shaped lamp 2 extends in the vertical direction. In this position, the white LEDs 10 are energized, so that the lamp 2 lights up white. Fig. 5B shows a lightly deflected light 2, whose deflection is not yet the minimum deflection of z. B. reaches 15 ° (α ₁ <α), so that further the white LEDs 12 are driven and the optical signal is not changed. Fig. 5C shows a lamp which has reached or exceeded the deflection threshold (α ₂ ≥ α), so that the position sensors 14 forward a corresponding signal to the controller 22 and the controller 22 according to the inclination controls the RGB LEDs and the power supply of the white LEDs 10th interrupts. The luminaire 2 then lights up in accordance with the control of the RGB LEDs 12 in red, yellow, blue or green, as described below with reference to Fig. 6 is shown in more detail.

Instead of driving in the equilibrium position, the white LEDs 10, one or more of the RGB LEDs 12 can be acted upon with low power, so that they light only with low luminosity (slumber) and consume less power accordingly. The white LEDs 10 can also be used as a position-independent permanent lighting, which can be activated either via a switch (not shown) on the lamp or via the remote control.

Fig. 6 shows a plan view of the lamp 2 on the one hand in its equilibrium position (solid circle) and in four different directions inclined positions (dashed lines). The four position sensors 14 are able to detect not only the four basic directions shown, but also the four basic directions corresponding angle segments S1-S4 of 90 °, as in the Fig. 4 is shown. If an inclination is detected in the segment S1, the red LED of the RGB LEDs 12 is activated. In the second and third segments, the yellow or blue LEDs are activated accordingly. Moves the light 2 in the fourth segment S4, so the yellow and blue LEDs are simultaneously controlled by the controller 22, so that the lamp 2 lights green due to the color mixture.

Of course, the assignment of color and inclination direction can be changed arbitrarily. The various programs for controlling the lighting means 10, 12 are stored in the control device 22 and can be connected via a remote control, not shown, or other suitable communication media by means of signal exchange, e.g. via infrared, Bluetooth®, WLAN, GSM. In the luminaire 2, a corresponding (not shown) receiving device for the remote control signals and a corresponding stored in the control device 22 control logic is provided.

Fig. 7 shows a lamp 102 according to the invention, which substantially corresponds in its functionality and construction of the first embodiment. Therefore, in the following, only the differences between the second and the first embodiment will be discussed.

In contrast to the first embodiment, the bottom portion 108 as well as the light exit portion 106 is formed transparent or translucent. Within the bottom portion 108 is an opaque electronics housing 109 which receives the electronics. At a side facing the light exit portion 106 of the electronics housing 109 a plurality of LEDs 110, 112 are arranged. The fact that the bottom portion 108 is also transparent, increases the luminous area of the lamp 102. Instead of the LEDs 110, 112 above the electronics housing 109 to arrange, they can also be arranged circumferentially on the peripheral surface. Further, instead of a conical housing 109, a cylindrical housing may also be used.

The luminaire according to the invention has been described with reference to two embodiments. However, the luminaire according to the invention is not limited thereto. In this regard, the following and not exhaustively listed modifications are conceivable:

So the bottom portion the shape e.g. have a half-cylinder. In this case, the luminaire can be tilted or rocked in two directions.

Depending on the application, other systems for detecting the inclination, such as a position sensor, may be used instead of a position sensor. Acceleration sensors, micro-electro-mechanical system (MEMS), etc., can be used.

The energy transfer for charging the battery is also possible by induction.

Instead of the battery, the electrical units can be powered within the lamp via a plug-in or permanently provided power cable. The interface at the bottom section should be provided laterally at such a height that the cable does not interfere with the rocking of the lamp nor does it affect the appearance of the lamp.

The switching on and off of the main switch of the lamp can be done via a vibration switch, i. by a shock to the bottom portion of the lamp can be activated and deactivated by another shock to the bottom section again.

The housing may have markings, e.g. red, yellow, blue, green, etc. to indicate which signal is to be expected when the luminaire is tilted in the corresponding direction.

The housing can be made of a recycled or recyclable material.

Furthermore, in addition to the lighting means, the light can also have acoustic signal transmitters which emit different acoustic signals when the position of the light changes. This can be realized electronically by the signals of the position sensors are converted into appropriate control of the signal generator or in a simpler and more cost-effective manner by in the Floor section circumferentially different sounding bodies are arranged and centrally, for example, at the top of the light exit section, a percussion instrument, such as a clapper, is suspended. When tilting the lamp, the clapper is deflected accordingly, thereby striking the corresponding direction of inclination sounding body. The child can orient and enjoy the same tone of voice equally.

Claims (13)

Luminaire (2; 102) with: at least one light source (10, 12, 110, 112); and a housing (4; 104) which has a transparent or translucent light exit section (6; 106) and a convexly rounded, in particular hemispherical, bottom section (8; 108), whereby the luminaire automatically assumes a predetermined, preferably vertically aligned starting position moved back when it has been moved out of this by an external force, characterized in that the at least one luminous means outputs two different active optical signals in two different positions of the luminaire. Luminaire (2; 102) according to claim 1, characterized in that
the housing (4; 104) has substantially the shape of an egg, in particular with a height in the range of 50 to 80 cm, which stands upright in the starting position. Luminaire (2; 102) according to claim 1 or 2, characterized in that
the two different layers of the luminaire are different from the starting position. Luminaire (2; 102) according to one of claims 1 to 3, characterized in that
in the initial position or after returning to the starting position, a third active optical signal is output, which differs from the two other active optical signals. Luminaire (2; 102) according to one of claims 1 to 3, characterized in that
after returning to the starting position, the last output active optical signal will continue to output. Luminaire (2; 102) according to one of claims 1 to 5, characterized in that
the active optical signal changes when the luminaire is tilted from the initial position by a predetermined angle (α), preferably in the range of 5 ° to 20 °, to one side. Luminaire (2; 102) according to one of claims 1 to 6, characterized in that
the lamp has two selectable operating modes, wherein in a first operating mode depending on the detected position different active optical signals are output and in a second operating mode, regardless of the position of the lamp, the same active optical signal is output. Luminaire (2; 102) according to one of claims 1 to 7, characterized in that
the luminaire can be tilted from the starting position in all lateral directions and different active optical signals are output as a function of the inclination direction and / or the inclination angle Luminaire (2; 102) according to one of claims 1 to 8, further characterized by
a position detection device (14), in particular one or more position sensors, for detecting a position of the luminaire with respect to the initial position, and
a control device (22) for controlling the at least one luminous means (10, 12; 110, 112) on the basis of the detected position Luminaire (2; 102) according to one of claims 1 to 9, characterized in that
the directions of inclination of the luminaire in the circumferential direction can be subdivided into four equal angle segments (S1-S4) and the illuminants have one or more RGB LEDs, whereby with a corresponding inclination in a first angular segment (S1) a red LED, in a second angular segment (S2) a yellow LED, in a third angular segment (S3) a blue LED and in a fourth angular segment (S4) Both the yellow LED and the blue LED are controlled, so that the light red, yellow, blue or green lights. Luminaire (2; 102) according to one of claims 1 to 10, characterized in that
the luminaire is a self-sufficient power supply, preferably a rechargeable battery (20), in particular a leakproof rechargeable battery, which can be charged via a charging interface (34), and a switch (36) for switching the power supply on and off, the charging interface (34) and or the switch is arranged in a recess (32) in the bottom section (8; 108) or accessible via an opening in the bottom section and the recess or the opening can be closed with a cover. Luminaire (102) according to one of claims 1 to 11, characterized in that
the bottom portion (108) is also transparent or translucent; and the electronic components are received in a centrally located, preferably cylindrical housing (109). Lamp with: at least one light source; and a housing having a transparent or translucent light exit section and a convexly rounded, in particular hemispherical, bottom section, wherein the luminaire moves back by itself to a predetermined, preferably vertically oriented, starting position when it has been moved out of the latter by an external force, characterized in that the luminaire has at least one acoustic signal generator; and the at least one acoustic signal transmitter emits two different acoustic signals in two different positions of the luminaire.

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