DE10107153A1 - Flat emergency service light for displaying signs has a triangular display panel, side light inlet/outlet edges and multiple light-emitting diodes in a U-shaped reflector unit partly encompassing a light inlet edge with its sides. - Google Patents

Abstract

A metal reflector unit (2) fastens on the upper light inlet edge of a display panel (1) by using holding extensions (3) each with elongated holes so that a unit can slide on near fastening studs (4) that merge into a separator and are screwed to a mounting plate.

Description

The invention relates to a flat escape sign luminaire with an essentially square display disc and side light entry edges and a variety of light emitting diodes (LED), which are in a U-shaped Are arranged reflector body, the reflector body with his legs have at least one light entry edge least partially encompasses, according to the preamble of the patent saying 1.

DE 197 47 096 A1 describes a flat lamp with a more compact design Lens arrangement and lateral light entry edges, in which feeds the light from a variety of light emitting diodes is known. Such devices are used for lighting device or backlighting of pictograms, in particular Safety label.

According to the solution according to DE 197 47 096 A1 is at least between the light entry edges for the infeed and the for the area provided for light emission is an edge zone trained in which the light is essentially guided, but is not emitted into the outside space. The edge zone should be like this be dimensioned so that the injected in their area Light can mix sufficiently to emit light A sufficiently uniform light emission to the surface cause. In one embodiment, the LEDs are in the  Irradiation area two opposite one another Light entry edges arranged. It is also provided that Arrange LEDs diagonally to the light entry edge and the Radiation via deflection optics into the light entry edges feed. The LEDs according to DE 197 47 096 A1 are in embedded a channel-shaped reflector, which a Has width that is substantially equal to the thickness of the Lens assembly is.

Such an escape sign luminaire is a relative one even illumination of the safety sign possible, however, the escape route itself is missing due to the lack of Space of emitted light energy is insufficient or insufficient illuminated.

In order now with such an escape sign luminaire To achieve path lighting, was according to DE 197 47 079 A1 proposed a sufficient number of light-emitting To provide diodes whose light emission direction directly to illuminated path is oriented. So it becomes the light of the other LEDs are not fed into the light guide, but directly or in the light distribution over the light focused optics directed towards the escape route leading to the luminaire leads. With such a solution, however, there are problems of Fixing the escape sign luminaire itself, in particular then when the lamp is suspended or on a boom to be mounted on the wall.

Exit signs continue to belong to the state of the art light up, which are supplied by two power sources, whereby in one operating mode a fluorescent lamp and another Operating mode a variety of light emitting diodes be used. In this way, the lighting Requirements both in a bright environment and in a dark one Environment.

A duplicity of the required power supply for the however, different illuminants lead to a higher one Effort and associated costs, but what it takes to ver avoid.  

From the above, it is therefore an object of the invention to further developed flat escape sign luminaire with an im essential square display panel and side light leading or light exit edges and a variety of light emitting diodes indicate that both under all Sufficient lighting of the actual operating conditions guaranteed escape sign as well as enough light in the environment, d. H. emits on the escape route. The too creating escape sign luminaire should also for the various types of mounting and fastening may be suitable.

The object of the invention is achieved with a Escape sign luminaire according to the features of the patent claim 1, the dependent claims at least expedient Events and training include.

The basic idea of the invention lies first in its use a preconfigured white light LED line, this Line includes a circuit board strip, which as Wirwir tion carrier for both the light emitting diodes and further active and / or passive components to limit the current tion or current control. Preferably the light Distribution characteristic of the LEDs ellipsoid with an angle distribution of z. B. 60 ° / 120 °, whereby the lighting Efficiency further improved.

A support plate is in the preferably metallic reflector body to accommodate the at least one white light LED line Lich, with the support plate and / or the white light LED line at a given angle to the longitudinal axis of the light leading edge of the display screen is inclined or are.

Furthermore, the reflector body, starting from the U- shaped legs integral holding projections for attachment the display disc or the bolts provided there.

In a preferred embodiment of the invention are on two opposite light entry edges one each Reflector body with at least one white light LED line  arranged, the angular position of the lines mirror-symmetrical or is selected in the opposite direction.

Due to the type of coupling taking place at an angle radiation is particularly uniform Illumination one on the front of the display screen arranged pictogram foil or one located there Imprint and it is ensured at the same time, class enough Scattered light over the remaining free light exit edges can be emitted to the desired path lighting.

The coupling angle is preferred as an acute angle Range between 15 ° and 35 ° selected. With a preferred one In the exemplary embodiment, the angle is essentially 25 °.

The support plate for receiving the white light LED line can be used as Plastic profile are formed and an adhesive strip to fix the circuit board so that the assembly very light and with inside the U-shaped reflector body low cost is possible.

The reflector body can be designed as a bent stamped part, the holding processes in pairs opposite each other in the corner areas are arranged and a Have mounting recess.

The mounting recess can be used as an elongated hole of the reflector body on the light entry edge of the display washer and the fastening bolts provided there become.

The fastening bolts can be used for wall mounting of the rescue serve as a spacer to a mounting plate, being on the side facing the mounting wall Mounting plate a power supply is provided for operation.

When installing the luminaire using a wall bracket, there is one Side of the edge a holding profile is provided, which the necessary power supply and necessary means for electrical Connection and mechanical fastening included. At the  opposite side there is a possibility of free Edge of the display panel with a reflective film cover to prevent leakage of side light prevent and the proportion of light that is indirect to path lighting radiation is increased.

When suspended, the are on the side edges Display panel support profiles provided with profile end pieces, one attachment each at the upper end of the support profiles plate is arranged.

A similar construction is used for the corner mounting of the lamp selected. Here too, wearers are on the side edges file provided with profile end pieces, the support profiles are connected to a holding profile at the upper end. The Holding profile, which preferably has a U-shape, takes that Power supply for power supply and electrical connection means on.

In the event that in a suspended embodiment Exit sign light on both sides of the display screen Escape signs or pictograms are provided the oppositely directed oblique arrangement of the white light LED lines as particularly advantageous. For example, the line of the line provided at the upper light entry edge Illumination of a pictogram on the front of the display disc and one on the lower edge of the display light provided another white light LED line of lighting one Pictogram, which is on the back of the display window is arranged to serve.

The white light LED rows are preferably inclined such that the back of the exit sign or Pictogram is irradiated, being by reflection and due to given scattering of light within the transparent Display the path lighting is guaranteed.

The mounting plate for wall mounting of the lamp can be on your Front designed reflective or with a bright Color coating should be provided in order to make it recognizable and  To improve contrast of the escape sign, but also to serve as a diffusing surface for path lighting at the same time. Here it is in the sense of the invention if a first White light LED line with its angular inclination Escape sign located on the front of the display disc is located, illuminates from behind and another White light LED row, e.g. B. at the bottom of the rescue Attached sign lamp, is so inclined that over the Display panel illuminated the front of the mounting plate becomes.

Any light-guiding means for coupling the Radiation of the light emitting diodes in the preferred a plastic material (PMMA) existing display screen not mandatory.

The invention is intended below with reference to exemplary embodiments play and explained in more detail with the help of figures become.

Here show:

Figure 1 is a front view of an escape sign luminaire in wall mounting.

Fig. 2 is a plan view of the wall-mounted escape sign light;

FIG. 3 shows a sectional illustration along the line DD according to FIG. 1;

FIG. 4 shows a detailed representation according to G according to FIG. 3;

Fig. 5 is a front view of a signage attached to a wall bracket;

Fig. 6 is sectional detail views taken along the lines NN and MM of FIG. 5;

Fig. 7 is an escape sign luminaire in a suspended form of management;

Fig. 8 is sectional detail views of the lamp of Figure 7 taken along the lines BB and CC.

Figure 9 is an escape sign luminaire for surface mounted in front view.

FIG. 10 is a sectional view of the escape sign luminaire according to Figure 9 along line AA. and

Fig. 11-sectional detailed views B and C of FIG. 10. The escape sign luminaires according to Embodiment 1 include a display screen such. B. made of PMMA plastic in a transparent version. Pictograms or escape signs (not shown) are then arranged on the front and / or back.

In the embodiment of the escape sign luminaire, suitable for wall mounting according to FIGS. 1 to 4, a reflector body 2 is attached to the upper light entry edge of the display panel 1 . Its attachment takes place via holding extensions 3 , each having elongated holes, so that it can be pushed on in the area of the attachment bolts 4 .

The fastening bolts 4 pass into a spacer 5 and are screwed to a mounting plate 6 . On the back of the mounting plate 6 there is a power supply unit 7 , which is connected via a cable 8 to the white light LEDs located in the interior of the reflector body 2 .

As can be clearly seen in FIGS. 3 and 4, a support plate 9 is located within the reflector body 2 , which in turn receives a printed circuit board strip 10 , which serves as a wiring support for the white light LEDs. Further active and / or passive components using SMD technology can be located on the printed circuit board in order to ensure safe operation of the LEDs.

The support plate 9 and thus also the circuit board strip 10 is oriented at an angle to the longitudinal axis of the light entry edge 12 of the display panel 1 . In the example shown, the angle is 25 °.

The left and right edges of the display panel 1 are with a reflector strip 13 , z. B. covered with an aluminum foil, so that path lighting scattered light emerges only over the lower light exit edge of the display panel 1 .

In the exemplary embodiments, an inclined position of the printed circuit board strip 10 with the white light LEDs 11 is assumed, an acute angle being selected. According to a further embodiment, not shown in the drawing, the angle can, however, also be substantially smaller up to a zero angle.

The mounting plate 6 is provided at least on the front with a light color coating or a reflective surface in order to ensure a sufficiently good contrast between the escape sign and the environment and, on the other hand, to radiate scattered light to optimize the path lighting.

The housing 14 , which receives the power supply 7 , also includes the electrical connection means in the form of a z. B. terminal block 15 and has features 16 with holes for mounting the lamp on a wall.

In the embodiment of the escape sign luminaire with wall bracket according to FIGS . 5 and 6, both an upper and a lower reflector body 2 , each comprising circuit board strips 10 with white light LEDs, are provided. In this case, the inclination takes place in the opposite direction, as can be seen in FIG. 6, an upper reflector body 2 with circuit board strips 10 and white light LEDs 11 to the front of the display panel 1 and a lower reflector body 2 with circuit board strips 10 and white light LEDs 11 is oriented towards the rear of the display panel 1 .

With such a wall bracket escape sign luminaire are in Usually on both the front and the back Escape signs applied, which by the selected type of Beam angle or coupling angle optimal and even can be illuminated.

On a side edge of the display panel 1 is a holding profile 17 z. B. fastened by screwing, which in turn comprises means for fixing the lamp on the wall.

The holding profile 17 can have the power supply unit with the necessary electrical connection means (not shown).

In the case of a suspended installation of the escape sign luminaire according to the exemplary embodiment according to FIGS. 7 and 8, support profiles 18 with profile end pieces 19 are provided on the side edges, a fastening plate 20 being provided at the upper end of the support profiles 18 . The mounting plates 20 can be covered with a canopy 21 known per se.

Analogous to FIG. 6, the white light LEDs 11 are irradiated obliquely on the printed circuit board strip 10 , specifically in the opposite direction to the respective long side of the light entry edges 12 .

For mechanical fixing the circuit board strips 10 in a particularly simple manner a double-sided adhesive strip can find 22 use.

FIGS. 9 to 11 are used for description of an execution form of the escape sign luminaire, suitable for surface mounted, wherein like are located here also suspended in the embodiment at the side edges carrying profiles 18. The support profiles 18 , which also have cap-like profile end pieces 19 , are connected at their top or their upper end to a holding profile 23 which accommodates the power supply unit for the white light LEDs and electrical connection means inside. In this embodiment, as shown in Fig. 10 in section, the angular position of the white light LED line can be selected mirror-symmetrically or, as can be seen in Fig. 11, an oppositely oriented orientation can be realized by the reflector body 2 with the holding extensions 3 are loosened from the fastening bolt 4 and rotated again by 180 °.

It can therefore be based on essentially standardized sizes of the display panel 1 work with standardized reflector bodies, which include appropriate means for power supply or electrical connection for the white light LED line.

In the described embodiments, a single line in the reflector body 2 was assumed, but there is alternatively the possibility of providing two lines arranged essentially in parallel.

All in all, the described invention succeeds a flat escape sign luminaire with display window and specify a variety of light emitting diodes, which in particularly simple way not only a sufficient loading Illumination of the actual escape sign, but also of the Escape route guaranteed without the design Possibilities through otherwise required additional light sources limited as in the prior art become.  

LIST OF REFERENCE NUMBERS

1

display screen

2

reflector body

3

Holding projection

4

mounting bolts

5

spacer

6

mounting plate

7

power adapter

8th

electric wire

9

support plate

10

PCB strips

11

White LED

12

Light entry edge

13

reflector strips

14

casing

15

terminal block

16

manifestations

17

retaining profile

18

T-bars

19

Profilendstück

20

mounting plate

21

canopy

22

tape

23

Retaining profile-ceiling mounting

Claims (14)

1. Flat exit sign luminaire with an essentially square display panel and lateral light entry leading edges and a multiplicity of light-emitting diodes (LEDs) which are arranged in a U-shaped reflector body, the legs of the reflector body at least partially encompassing at least one light entry edge, characterized in that that a support plate for receiving at least one white light LED line is located in the reflector body, the support plate and / or the white light LED line being oriented at a predetermined angle to the longitudinal side of the light entry edge of the display, and on the reflector body starting from the U -shaped legs are integral holding projections for attaching to the display screen. 2. Flat escape sign luminaire according to claim 1, characterized in that at two opposite light entry edges Reflector body with at least one white light LED line is arranged, with a deviating from the zero angle Angle the angular position of the lines mirror symmetric or is chosen in the opposite direction. 3. Flat escape sign luminaire according to claim 1 or 2, characterized in that the given angle is an acute angle. 4. Flat escape sign luminaire according to claim 3, characterized in that the angle in the range from 15 ° to 35 °, preferably 20 ° to 25 ° lies. 5. Flat escape sign luminaire according to claim 1, characterized in that the predetermined angle is a zero angle.   6. Flat escape sign luminaire according to one of the previous previous claims, characterized in that the support plate is designed as a plastic profile and one Has adhesive tape for fixing the white light LED line. 7. Flat escape sign luminaire according to one of the previous previous claims, characterized in that the reflector body is a bent stamped part, the Holding processes in pairs opposite each other in the Corner areas are arranged and a mounting recess include. 8. Flat escape sign luminaire according to claim 7, characterized in that the mounting recess as an elongated hole for attaching the Reflector body on the light entry edge of the display washer and fastening bolts provided there or -screws is formed. 9. Flat escape sign luminaire according to claim 8, characterized in that the mounting bolts when mounting the lamp on the wall as Spacer are formed to a mounting plate, with the side of the mounting plate facing the mounting wall a power supply unit for operating the at least one white light LED Line is provided. 10. Flat escape sign luminaire according to one of the claims 1 to 8, characterized in that when mounting the lamp on a wall bracket Side edge of a holding profile is provided, which a Power supply for operating the at least one white light LED Line and means for electrical connection.   11. Flat escape sign luminaire according to one of the claims 1 to 8, characterized in that when the luminaire is suspended from the side edge support profiles with profile end pieces are provided, one attachment each at the upper end of the support profiles plate is arranged. 12. Flat exit sign luminaire according to one of the claims 1 to 8, characterized in that when mounting the luminaire on the ceiling at the side edges Carrying profiles are provided with profile end pieces, the Carrying profiles connected to a holding profile at the upper end are and the holding profile a power supply to operate the at least one white light LED line as well as electrical Connection means takes up. 13. Flat escape sign luminaire according to claim 9 or 10, characterized in that the side or the light exit edges of the display are provided with a reflective coating. 14. Flat escape sign luminaire according to one of the previous claims, characterized in that the LEDs used have an ellipsoidal light distribution have characteristics.