NL2021757B1 - Floor illumination device - Google Patents

Abstract

Floor illumination device, configured to be mounted to a wall at a predetermined height above a floor level, wherein the device includes a first light source (3), configured for emitting a first diverging light beam and a second light source (13) for emitting a second diverging light beam, light exit surfaces of the two light sources (3, 13) being arranged at substantially the same vertical level, preferably externally of a wall mounting plane (P) that is associated with the wall (W) after mounting,

Description

Title: Floor illumination device

The present invention concerns a floor illumination device, configured to be mounted to a wall at a predetermined height above a floor level.

Floor illumination devices are known in many different configurations. A preferred embodiment of a floor illumination device concerns a wall mounted configuration, designed for low level lighting. Thus, e.g., under dark conditions (nighttime) a corridor floor can be lit up partially, to allow safe passage to a user, whereas illumination of other (higher) areas of the corridor may remain substantially absent, saving energy and costs.

In particular, a low level lighting device can include a light source that is fixed to a wall at a relatively low level above ground (floor) level, wherein the light source is mainly directed downwardly for illuminating a respective floor (that extends along i.e. in parallel with the wall). Disadvantages of known floor lighting configurations are that they provide relatively inefficient floor lighting, can be rather cumbersome to mount in a right position, and that they illuminate relatively large parts of the floor in a relatively inhomogeneous manner (e.g. making ‘hot spots’ at certain areas on the floor and leaving other areas in the dark).

The present invention aims to provide an improved floor illumination device. In particular an aim of the invention is to provide improved floor illumination, wherein a certain part of the floor can be illuminated an a relatively homogeneous/regular manner, wherein preferably emission of stray light and/or user blinding light is mainly avoided.

To this aim, according to the invention, the floor lighting device is characterized by the feature of claim 1.

Preferably, the device includes a first light source, configured for emitting a first diverging light beam and a second light source for emitting a second diverging light beam, light exit surfaces of the two light sources being arranged at substantially the same vertical level, preferably externally of a wall mounting plane that is associated with the wall after mounting, wherein the device includes a mirror section protruding laterally between the two light exit surfaces, the intermediate mirror section including a first mirror element facing the light exit surface of the first light source, for reflecting incoming light in a direction away from the second light source.

In this way a relatively even/regular illumination of a certain part of the floor can be achieved, in an effective manner. The two light sources can provide diverging light beams, so that a relatively large amount of light is available for illuminating a relatively large area of the floor. The mirror section of the device can reflect light emanating from the exit surface of the first light source (the light in particular being emitted in a direction towards that mirror section and towards the exit surface of the second light source) back, to avoid that that light reaches the same floor area as light that is emitted from the exit surface of the second light source. Herein, it is preferred that the reflected light can reach another area of the floor. Thus, a relatively large floor area can be illuminated, by diverging light beams from the two light sources, in a relatively even manner.

According to a preferred embodiment, optical axes of the (two) diverging light beams emitted from the light exit surfaces of the first and second light source include an angle larger than 0 degrees, for example in the range of 10-30 degrees.

Thus, main light emission directions of the diverging light beams (from the two light sources) can slightly lead away from each other, to improve floor illumination coverage.

Preferably, when viewed in front view, the diverging light beams emitted from the light exit surfaces of each light source have an opening angle larger than 90 degrees, preferably larger than 135 degrees, for example in the range of 140-160 degrees. It has been found that in this way, after mounting, optimum floor illumination can be achieved.

Further, according to an embodiment, the device can be arranged such that the optical axis of a said diverging light beam extends obliquely downwardly from the respective light exit surface, in particular at an angle in the range of 20-70 degrees. Thus, a relatively broad floor coverage can be achieved, in particular in case the device is located at a relatively low mounting position (e.g. lower than 50 cm above floor level)

According to an embodiment, the device includes a light blocking member extending in front (in particular partly overlapping see in front view) of the light exit surfaces, for limiting a forward opening angle of the light sources. In this way, floor illumination can be limited to a specific floor area, for example a strip, allowing e.g. better optical guidance to users.

For example, said first mirror element can include a concave light reflecting surface. Such a mirror element can bundle part of incoming diverging light into a less diverging reflected beam, that can provide good floor illumination at a relatively great distance from the device.

Preferably, the first mirror element is arranged for reflecting incoming light into a substantially horizontal light bundle, preferably extending substantially in parallel with the wall mounting plane.

In this way, the reflected light can also provide wall illumination (horizontally, sideways) next to the device (when in a mounted position), further improving the illumination of the device’s surroundings to a person passing by. Thus, a relatively large area of e.g. a corridor can be illuminated in a simple manner, i.e. by a relatively compact illumination device..

According to an embodiment, the first mirror element has a proximal section, configured to receive light that is emitted from the light exit surface of the first light source towards the wall mounting plane, the proximal section of the first mirror element in particular being arranged for reflecting the light in a direction substantially in parallel with the wall mounting plane. This can also provide good illumination, wherein part of the generated and light that is emitted e.g. backwardly from the light exit surface can be redirected for illumination along the wall and/or of the wall (after mounting).

Also, preferably, the first mirror element has a distal section that is located at a horizontal distance from the wall mounting plane that is larger than a distance between a horizontally outer side of the light exit surface of the first light source, and the wall mounting plane. For example, the distal section of the first mirror element can be configured to reflect the incoming light into a substantially horizontal direction, in particular for passing the light exit surface of the first light source. This further improves illumination coverage of the device.

Preferably, each light source includes a convex or dome-shaped light exit surface, for example a surface of a lens. Thus, the exit surface can protrude forwardly (i.e. away from a wall mounting surface), so that emitted light can reach relatively large parts of a floor extending directly below the device (after mounting) and preferably also along the respective wall in case light is reflected (substantially horizontally) sideways.

In a preferred embodiment the intermediate mirror section includes a second mirror element facing the light exit surface of the second light source, for reflecting incoming light in a direction away from the first light source, the second mirror element preferably being a mirrored copy of the first mirror element for providing corresponding mirror characteristics to the second light source as that first mirror elements provides to the first light source. For example, the first and second mirror element can extend in mutually diverging directions. In this preferred embodiment, the second mirror element can provide above-mentioned advantages of the first mirror element to the second light source (i.e. in particular to light of that source that is emitted via the second exit surface).

Further, it is preferred that the device includes a beam blocker located opposite the first light source, the first blocker being configured for blocking part of a first beam section of a diverging beam. The beam blocker can e.g. block part of a first beam section (emanating from the first light exit surface) that is transmitted vertically downwardly (when the device is in a mounting position) to avoid direct illumination of a small floor area directly below the device. In that case it is also preferred that this small floor area is still illuminated by light that is emitted from the light exit surface of the second light source. The beam blocker can be a light blocking element. In a relatively simple configuration, the beam blocker can be light blocking tape or a light blocking coating, or a light blocking platelet, that is fixed to the light exit surface.

Preferably, the first mirror element is arranged for reflecting at least part of the third beam section of the light emitted by the first light source, such that the reflected light passes the first beam divider.

It is further preferred, that a similar second beam divider is present, with respect to the second light source. The second beam divider can be configured for blocking a beam section of light transmitted from the exit surface associated with the second light source into a first direction, and for allowing transmission of a further beam sections into other directions. In particular, the second beam divider can e.g. block a beam section (emanating from the second light exit surface) that is transmitted vertically downwardly (when the device is in a mounting position) to avoid direct illumination of a small floor area directly below the device. In that case it is also preferred that this small floor area is still illuminated by light that is emitted from the light exit surface of the first light source.

According to an embodiment, the first fight source includes a beam forming lens for forming the diverging fight beam, in particular from fight emitted by a respective light emitter. An outer surface of the beam forming lens can provide the respective light exit surface.

Preferably, the device is configured for positioning a light exit surface of the first light source substantially opposite a floor to be illuminated after mounting to a wall. As is mentioned before, this can be e.g. partly (or entirely) achieved by a shape of the light exit surface itself, e.g. by providing a convex or dome-shaped light exit surface. Besides or alternatively, the device can have a mounting or support means, e.g. a housing, that is configured to be mounted to or into a wall, the arrangement being such that the fight exit surface is positioned substantially opposite a floor (e.g. externally of a respective device receiving wall) after mounting.

Further, good results can be achieved in case each light source includes an LED and a respective beam former for forming the light beam.

The LED (Light Emitting Diode) can provide a relatively large fight output in an energy efficient manner, which can be formed into a diverging beam by the beam former (the beam former e.g. being a lens, as mentioned above).

In a preferred embodiment, for providing efficient and swift mounting, the device includes a support structure, e.g. a housing, for carrying the fight sources and mirror section, the support structure including mounting means for mounting the device to a wall, the support structure optionally including light source controlling and/or power supply means for controlling and/or powering the light sources. In that case, advantageously, the support structure can be configured to be at least partly received within a mounting opening of the wall.

Also, in a preferred embodiment, the device includes at least one motion sensor, for example PIR detector, for detecting nearby human motion, and a controller for controlling activation of the light sensor based on a motion sensor signal. Thus, the device can be automatically activated by motion, and preferably automatically deactivates after a certain amount of time, saving energy, as will be appreciated by the skilled person.

Further, according to an embodiment, the first light source can be configured to illuminate a floor section over a length of at least 4 m, measured in parallel with the wall, when the device is mounted such that the light exit surface of the first light source is located at about 30 cm above a respective floor level.

In this way, a single device can illuminate a relatively large (e.g. elongated) floor section of the floor.

Also, in an embodiment, the first light source and second light source can be arranged such that their emitted light partly overlaps on the floor, when the device is mounted such that the light exit surfaces of light sources are located about 30 cm above the floor level.

In this way, a relatively large floor section can be continuously (i.e. without dark spots in that floor section) illuminated..

The invention will now be explained in more detail, referring to the drawings which show non-limiting examples.

Figure 1 shows an exploded view of an embodiment of a floor illumination device;

Figure 2 shows a perspective view of the embodiment of Fig. 2, after mounting;

Figure 3 depicts a front view of the embodiment of Fig. 2, indicating light transmission paths; and

Figure 4 shows a bottom view of the embodiment of Figure 2, indicating light transmission paths;

Figure 5 schematically shows a perspective front view of the device in a mounting position on a wall; and

Figure 6 a front view of a light exit surface of the first light source, being provided with a beam blocker.

Similar or corresponding features are denoted by similar or corresponding reference signs in this application.

Figures 1-5 show an example of a floor illumination device 1, configured to be mounted to a wall W at a predetermined height H above a floor level (see in particular Figures 4 and 5 for a wall mounted position). It is preferred that the predetermined height is a relatively low vertical level above the floor F that is to be partly illuminated. For example, the height H can be in the range of about 20 to 50 cm, in particular about 30 cm. Also, as follows from Fig. 5, in the present example, the device 1 is preferably configured to illuminate a relatively elongated area IA, a strip, of the floor F after mounting.

The device includes a first light source 3, configured for emitting a first diverging fight beam and a second light source 13 for emitting a second diverging light beam.

As follows from the drawing the present device 1 includes a support structure, e.g. a housing 50, for carrying two light sources 3, 13. The present light sources 3, 13 include respective integrated light emitters 3a, 13a that generate light, and beam formers (e.g. optical elements) for passing and emitting the generated light to surroundings of the device 1. In a preferred embodiment, each of the two integrated light emitters 3a, 13a is a LED. Each light emitter 3a, 13a is in particular configured to emit light in the visible spectrum, for example white light.

In particular, the first light source 3 includes a beam forming lens 3b for forming (and emitting) a diverging light beam, in particular from light emitted by the respective first light emitter 3a. The second light source 13 includes a beam forming lens 13b for forming the diverging light beam, in particular from light emitted by the respective second light emitter 13a. External surfaces Si, S2 of the beam forming lenses 3b, 13b provide respective fight exit surfaces Si, S2 of the device 1.

The support structure/housing 50 of the device 1 can be configured in various ways. Referring to Figure 1, e.g. the housing can be configured to be at least partly received within a mounting opening of the wall W. For example, the housing can define a wall mounting plane P that extends on or close to the outer surface of the wall W after mounting, wherein a back part 51 of the housing can protrude through that wall mounting plane backwards to be received within the wall opening after mounting.

In the example, the housing 50 includes an optional, laterally extending positioning flange or plate 50, in particular having a square shape. As follows from Fig. 1, the device 1 can include various additional structures, for example an optional mounting frame 52, for example having a square shape, for finishing or covering the lateral edge of the housing 1 when the housing 1 is coupled to the wall W. The lateral edge can be e.g. an edge of the positioning flange 50a (as in this example ).

The device 1 can include a positioning structure 53 for positioning a back housing part 51 in a standard wall electricity box 80, wherein the positioning structure can include mounting holes 53a for receiving wall mounting bolts(not shown).. Electric wiring (not show) can e.g. be fed via this box 80 to the device 1, for example via the positioning structure 53, for electrically powering the device 1. In the present non-limiting example, a bottom of the positioning structure 53 includes electric contacts 53b, to be connected to said electric wiring, wherein the contacts 53b can electrically interconnect mating/matching electric contacts of a back side of the housing (not shown) to said electric wiring, to enable power transmission after wall mounting.

The housing 50 can include various components for powering and controlling (e.g. switching on and off) the light sources 3, 13, e.g. including light source controlling and/or power supply means, as will be appreciated by the skilled person.

Optionally, the device 1 can include at least one motion sensor, for example PIR detector, for detecting nearby human motion, and a controller for controlling activation of the light sensor based on a motion sensor signal. The present example includes two motion detectors 55, 56, being faced away from each other and being located at opposite sides of a central front section 54 of the housing (the detectors also being located on an external side of the lateral housing flange 50a in this example). Thus, a broad motion detection area can be covered. Each motion detector can e.g. be a PIR (Passive Infrared) motion detector.

The device 1 is configured such that, after mounting on the wall, light exit surfaces Si, S2 of the two light sources 3, 13 are arranged at substantially the same vertical level, and externally of the wall mounting plane P that is associated with the wall W ( after mounting) .

As follows from the drawings, the device is configured for positioning the light exit surface Si, S2 of the two first light sources substantially opposite the floor F (after mounting to the wall W). To that aim, in particular, the light exit surface Si, S2 extend or protrude outwardly from the housing, at the side located in front of the wall mounting plane P. Moreover, each light source includes an outwardly extending, convex or dome-shaped light exit surface Si, S2. As follows from the drawing, the convex light exit surfaces Si, S2 are slightly turned away from each other (viewed in front view) for transmitting respective light beams into mutually different directions.

Light emission from the light sources 3, 13 is indicated with dashed lines in the drawings. Several beam sections (rays of those beam sections), being directed in different directions, are indicated. Each of the sources 3, 13 emits a respective first beam section Bl (i.e. being part of a main diverging beam that is emitted from the respective source), substantially downwardly, towards the floor F. Further, the sources 3,13 emit second B2 and third B3 beams sections, for illumination along and/or on the wall W (laterally, in both directions, of the device 1 as follows from Figures 3-5). A said second beam section B2 is emitted from the respective light exit surface Si, S2 (of respective light source 3, 13) in a direction immediately away from the other light source (and away from the a mirror section 2, discussed below in more detail).

As follows from the drawing, non-parallel optical axes of the diverging light beams emitted from the light exit surfaces Si, S2 of the first and second light source can e.g. include an angle larger than 0 degrees with each other, for example in the range of 10-30 degrees, or another angle.

Moreover, the first light source 3 and second light source 13 are preferably arranged such that their emitted light (in particular respective first beam parts Bl) partly overlaps on the floor, when the device 1 is mounted such that the light exit surfaces of light sources are located about 30 cm above the floor level. An respective overlapping illumination area is indicated by OA in Fig. 5.

Further, viewed in front view, the diverging light beams emitted from each of the light exit surfaces Si, S2 of each light source 3, 13 can have an opening angle larger than 90 degrees, preferably larger than 135 degrees, for example in the range of 140-160 degrees.

Further, the device 1 can be arranged such that the optical axis of a said diverging light beam extends obliquely downwardly from the respective light exit surface, in particular at an angle in the range of 20-70 degrees.

Preferably, the device 1 includes a light blocking member 9 extending in front (i.e. partly overlapping, when viewed in front view) of the light exit surfaces Si, S2, for limiting a forward opening angle of the light sources 3, 13. The light blocking member 9 can e.g. include a cap or cover section of a housing of the device 1, in particular of the central front section 54, as in this example.

The device further 1 includes a mirror section 2 protruding laterally between the two light exit surfaces Si, S2 (i.e. in forward direction, away from the wall mounting plane P), the intermediate mirror section 2 including a first mirror element 7 facing the light exit surface Si of the first light source 3, for reflecting incoming light in a direction away from the second light source 13. In particular, the first mirror element 7 is configured to receive and reflect an afore-mentioned third beam section B3 of emitted light.

Advantageously, the first mirror element 7 includes a concave light reflecting surface, e.g. for reducing divergence of a received third beam section B3, for example for reflecting and substantially or partly collimating that beam section B3. For example, the first mirror element 7 can include a metal light reflecting surface, e.g. an aluminium surface, or a different type of light reflecting surface.

In this example, the first mirror element 7 is arranged for reflecting incoming light (i.e. a third beam section B3) into a substantially horizontal reflected light bundle, preferably extending substantially in parallel with the wall mounting plane P. In particular, the reflection is such that the reflected third beam section part can be complementary to the laterally emitted second beams section B2 of the same light source 3.

The first mirror element 7 can have a distal section 7a that is located at a horizontal distance from the wall mounting plane P that is larger than a distance between a horizontally outer side of the light exit surface of the first light source, and the wall mounting plane P (see Fig. 2, 4). In the present example, the distal section 7a of the first mirror element 7 is configured to reflect the incoming light into a substantially horizontal direction, in particular for passing a front side of the light exit surface Si of the first light source 3.

The first mirror element 7 can also have a proximal section 7b (see Fig. 4), located near the wall mounting plane P and being configured to receive light that is emitted from the light exit surface of the first light source towards the wall mounting plane P, the proximal section 7b of the first mirror element 7 in particular being arranged for reflecting the light in a direction substantially in parallel with the wall mounting plane (the light following a path extending below a lower edge of the respective light exit surface Si).

Further, as follows from the drawing, the first mirror element 7 can be provided with a curved outer edge (i.e. faced away from the wall mounting plane P).

The intermediate mirror section 2 also includes a second mirror element 17 facing the light exit surface S2 of the second light source 13, for reflecting incoming light (in particular a respective third beam section B3) in a direction away from the first light source 3. In this preferred example, the second mirror element is a mirrored copy of the first mirror element 7 for providing corresponding mirror characteristics to the second light source as that first mirror elements provides to the first light source 3,1 3. In particular, The first mirror element 7 and second mirror element 17 extend in mutually diverging directions, in this example.

Further, it follows that the second mirror element 17 can include a concave light reflecting surface, e.g. for reducing divergence of the received third beam section B3 (from the second exit surface S2), for example for reflecting and substantially or partly collimating that beam section B3. For example, the second mirror element 17 can include a metal light reflecting surface, e.g. an aluminium surface, or a different type of light reflecting surface.

Also, the second mirror element 17 can arranged for reflecting incoming light (i.e. a respective third beam section B3 of the second source 13) into a substantially horizontal reflected light bundle, preferably extending substantially in parallel with the wall mounting plane P.

The second mirror element 17 can have a distal section 17a that is located at a horizontal distance from the wall mounting plane P that is larger than a distance between a horizontally outer side of the light exit surface of the second light source, and the wall mounting plane P (see Fig. 2, 4). In the present example, the distal section 17a of the second mirror element 17 is configured to reflect the incoming light into a substantially horizontal direction, in particular for passing a front side of the light exit surface S2 of the second light source 13.

Besides, the second mirror element 17 can have a proximal section 17b (see Fig. 4), located near the wall mounting plane P and being configured to receive light that is emitted from the light exit surface of the first light source towards the wall mounting plane P, the proximal section 17b of the second mirror element 17 in particular being arranged for reflecting the light in a direction substantially in parallel with the wall mounting plane (the light following a path extending below a lower edge of the respective light exit surface).

Further, as follows from the drawing, the second mirror element 17 can also be provided with a curved outer edge (i.e. faced away from the wall mounting plane P).

In a preferred embodiment, the device configuration is such that each light source 3, 13 can illuminate a floor section over a length L of at least 2 m, and preferably at least 5 m, measured in parallel with the wall (see Figure 5), and in particular in case the device 1 is mounted such that the light exit surface Si, S2 of the light source is located at H=30 cm above a respective floor level. By application of the two light sources 3, 13, in the present configuration, an overall illuminated floor section length can thus e.g. be larger than 3 m, and preferably larger than 7 m (e.g. at least about 10 m, and in particular in case the device 1 is mounted such that the light exit surface Si, S2 of the light source is located at H=30 cm above a respective floor level.

Moreover, the device configuration is preferably such that (in case the device 1 is mounted such that the light exit surface Si, S2 of the light source is located at H=30 cm above a respective floor level) the illuminated floor section has a width, measured normally with respect to the wall, of at least 1 m, more preferably at least 1.5 m (e.g. in the range of 1 - 2 m).

Also, herein, an illuminated floor section can be defined as a floor section that receives at least 1 lux of light from the illumination device, whereas a remaining (adjoining) floor section e.g. receives no or less than 1 lux of light from the illumination device.

As follows in particular from Figure 5, the present embodiment 1 can illuminate a relatively large floor area relatively homogeneously, even in case the device 1 has a relatively low (e.g. about 30 cm) mounting position above floor level. Also, the device 1 can illuminate a relatively long strip or area of the floor F (i.e. in both left and right directions as in Fig. 5). Besides, substantially no light is emitted upwardly (i.e. in a direction away from the floor), so that blinding of users/people passing by can be avoided. Moreover, the device 1 can provide indirect lighting of the area, via respective substantially horizontal beams sections B2, B3 that are along and/or partly on the wall W itself. This provides a pleasant, safe atmosphere to a user.

Further, beam sections of the light sources 3, 13 can provide complementary illumination, wherein second sections B2 (emitted in 1 directions) can be strengthened by third beam sections B3.

Also, the present device can be made relatively compact. In a further, extra advantageous embodiment, a maximum distance Z between a external front surface of the device 1 and the wall mounting plane (see Fig. 4 ) is 5 cm, in particular 3 cm and more preferably only 2 cm.

It is self-evident that the invention is not limited to the abovedescribed exemplary embodiments. Various modifications are possible within the framework of the invention as set forth in the appended claims.

For example, it is preferred that the floor illumination device only includes a small number of light sources, such as only two as in the present embodiment, and/or only two respective light exit surfaces (with a single intermediate mirror section), allowing for a simple and compact construction. Alternatively, the floor illumination device may include e.g. more than one light exit surface (e.g. associated with more than one light source) at a side of an intermediate mirror section.

Also, in a preferred embodiment, the device 1 can include a first beam blocker 5 located opposite the first light source 3, the beam blocker 5 being configured for blocking part of the respective first beam section Bl, namely a part that is emitted in vertical direction downwardly. The first mirror element 7 can be arranged for reflecting at least part of the emitted light, such that the reflected light passes the blocker 5. An example of such a beam blocker 5 is depicted in Figure 6 (showing a front view of a first light source only), in which case a triangular blocking element ( e.g. light absorbing tape, or preferably light-reflecting tape, or the-like) extends over part of the first light exit surface Si of the first light source 3. The second light source 13 can be provided with a similar, second beam blocker, again for blocking part of the respective beam section Bl, namely a part that is emitted in vertical direction downwardly. The beam blockers can prevent hot spot formation directly, vertically, below the device 1. Herein, it is preferred that a floor section that has been blocked to be illuminated by the first light source 3 due to the presence of the first blocker 5, is still illuminated by light emanating from the second light source 13. In the same manner, it is preferred that a floor section that has been blocked to be illuminated by the second light source 13 due to the presence of a respective second blocker, is still illuminated by light emanating from the first light source 3.

Also, in a preferred embodiment, the illumination device is configured to prevent or reduce upwardly emitted light to be internally reflected, e.g. downwards. To that aim, for example, the housing 50 can include a light absorbing inner side extending above each light exit surface, for example an inner side being coated with a light absorbing material., a black inner side or the-like.

Claims (24)

Floor lighting device, configured to be mounted on a wall at a predetermined height above a floor level, the device comprising a first light source (3) configured to emit a first diverging light beam and a second light source (13) for emitting of a second diverging light beam, wherein light exit surfaces of the two light sources (3, 13) are arranged at substantially the same vertical level, preferably outside of a wall mounting surface (P) associated with the wall (W), the the device is provided with a mirror part (2) projecting laterally between the two light-emitting surfaces, the intermediate mirror part comprising a first mirror element (7) which faces the light-emitting surface of the first light source (3), in order to reflect away from the second light source. Floor lighting device according to claim 1, wherein optical axes of the diverging light beams emitted from the light-emitting surfaces of the first and second light source include an angle greater than 0 degrees, for example in the range of 10-30 degrees. Floor lighting device according to any one of the preceding claims, wherein, viewed in front view, the diverging light beams emitted from the light-emitting surfaces of each light source have an opening angle (α) which is greater than 90 degrees, preferably greater than 135 degrees, e.g. range of 140-160 degrees. Floor illumination device according to any one of the preceding claims, wherein the device is designed such that the optical axis of said diverging light beam extends obliquely downwards from the respective light-emitting surface, in particular at an angle in the range of 20-70 degrees. Floor lighting device according to any one of the preceding claims, wherein the device comprises a light-blocking part (9) which extends in front of the light-emitting surfaces, in order to limit a forward opening angle of the light sources. Floor lighting device according to any one of the preceding claims, wherein the first mirror element (7) comprises a concave light-reflecting surface. Floor lighting device according to any one of the preceding claims, wherein the first mirror element (7) is designed to reflect incident light in a substantially horizontal light beam, preferably extending parallel to the wall mounting surface (P). Floor lighting device according to any one of the preceding claims, wherein the first mirror element (7) has a proximal part configured to receive light emitted from the light exit surface of the first light source towards the wall mounting surface, the proximal part of the first mirror element (7) is in particular adapted to reflect the light in a direction substantially parallel to the wall mounting surface. Floor illumination device according to any one of the preceding claims, wherein the first mirror element (7) has a distal part which is a horizontal distance from the wall mounting surface that is greater than a distance from a horizontal outside of the light-emitting surface of the first light source, and the wall mounting surface (P). Floor illumination device according to claim 9, wherein the distal part of the first mirror element is designed to reflect the incident light in a substantially horizontal direction, in particular for passing the light-emitting surface of the first light source. Floor lighting device according to any one of the preceding claims, wherein each light source comprises a convex or dome-shaped light output surface. Floor lighting device according to any one of the preceding claims, wherein the intermediate mirror part comprises a second mirror element (17) facing the light-emitting surface of the second light source (13) to reflect incident light in a direction away from the first light source, wherein the second mirror element (17) is preferably a mirrored copy of the first mirror element to provide corresponding mirror characteristics to the second light source as that which the first mirror element provides to the first light source. Floor lighting device according to claim 12, wherein the first and second mirror element (7, 17) extend in mutually diverging directions. Floor lighting device according to any one of the preceding claims, wherein the device (1) is provided with a beam blocking (5) which is opposite the first light source (3), the beam blocking (5) being configured to form part of a first beam section ( B1) to block broadcast in a first downward direction. Floor lighting apparatus according to claim 14, wherein the first mirror element (7) is arranged to reflect at least part of a beam section (B3) of the light emitted from the first light source such that the reflected light passes the beam block. Floor lighting device according to any one of the preceding claims, wherein the first light source (3) comprises a beam-forming lens (3b) to form the diverging light beam, in particular from light emitted from a respective light emitter (3a). Floor lighting device according to any one of the preceding claims, wherein the device is configured to arrange a light-emitting surface of the first light source substantially opposite a floor to be exposed after mounting on a wall. Floor lighting device according to any one of the preceding claims, wherein each light source comprises an LED and a respective beam former to form the light beam. Floor lighting device according to any one of the preceding claims, comprising a support structure, for instance a housing, for carrying the light sources (3, 13) and mirror part (3), the support structure being provided with mounting means for mounting the device on a wall, wherein the support structure optionally includes light source control and / or food for controlling and / or powering the light sources. Floor lighting device according to claim 19, wherein the support structure is configured to be received at least partly within a mounting opening of the wall (W). Floor lighting device according to any one of the preceding claims, comprising at least one motion sensor, for example PIR detector, for detecting near human movement, and a controller for controlling activation of the light sensor based on a motion sensor signal. Floor lighting device according to any one of the preceding claims, wherein the first light source is arranged to illuminate a floor part over a length of at least 4 in, measured parallel to the wall, when the device (1) is mounted such that the light-emitting surface of the first light source is about 30 cm above a respective floor level. Floor lighting device according to any one of the preceding claims, wherein the first light source and second light source are arranged such that 5, the light emitted thereby partly overlaps on the floor, when the device (1) is mounted such that the light-emitting surface of the first light source is approximately 30 cm above a respective floor level. 24. Wall, provided with at least one floor lighting device according to Any of the preceding claims, wherein the floor exposure device is mounted at a predetermined height above a floor that extends along the wall to illuminate an area of the floor.