WO2014176612A1

WO2014176612A1 - Effect lighting

Info

Publication number: WO2014176612A1
Application number: PCT/AT2014/000099
Authority: WO
Inventors: Michael MOZELT
Original assignee: Tridonic Gmbh & Co. Kg
Priority date: 2013-04-30
Filing date: 2014-04-30
Publication date: 2014-11-06
Also published as: AT14601U1; DE212014000114U1

Abstract

The invention relates to a lighting means, preferably for effect lighting, comprising at least one gas discharge lamp (2) which illuminates a light chamber (LK) and emits light of a certain colour and brightness from the light-emission region (LB). Said lighting means also comprises at least one light-emitting diode (1) arranged in the light-emission region (LB) of the lighting means and which, when activated, changes the light colour and/or brightness for at least one part of the light-emission region (LB). Said lighting means is characterised in that the light-emitting diode (1) can be selectively actuated and is only actuated when the brightness of the gas discharge lamp is reduced.

Description

Effektbeleuchturtg

The invention relates to a light source, preferably for effect lighting, with light emitting diodes in combination with a gas discharge lamp according to the preamble of

Patent claim 1, in particular a dimmable

Energy saving lamp.

Technical area

Dimmable energy-saving lamps can be used for various purposes, such as energy-efficient lighting as a replacement for incandescent lamps.

Such lamps are also used in lighting systems to achieve a flat lighting of rooms, paths or escape routes. Usually, the bulbs are driven by operating devices and activated as needed. For such lighting gas discharge lamps or light emitting diodes (LED) are used as the light source.

State of the art

For lighting are used instead of gas discharge lamps and incandescent lamps more often than light-emitting diodes

Light source used. The efficiency and luminous efficacy of light-emitting diodes is being increased more and more so that they are already being used in various general lighting applications. However, LEDs are still very expensive. However, conventional energy-saving lamps based on fluorescent lamps are not color-changeable.

CONFIRMATION COPY A lighting with visual effects, changing lighting scenarios and high luminosity is not yet possible. Presentation of the invention

It is the object of the invention to provide an energy-saving lamp which can be used for various purposes, for example for effect lighting.

It is also an object of the invention to provide a light source, preferably for effect lighting, which is a lighting with visual effects and high luminosity by a light source with a

Gas discharge lamp without the disadvantages mentioned above or under a significant reduction of these disadvantages allows.

This object is achieved according to the invention for a generic device by the characterizing features of claim 1. Particularly advantageous

Embodiments of the invention are described in the subclaims. The inventive solution for a light source with

Light-emitting diodes and a gas discharge lamp is based on the idea that the light source has a defined

Light exit area and at least one

Gas discharge lamp, which illuminates a light chamber and with a certain light color and brightness from the

Light exit area lights out, has. Furthermore, the luminous means has at least one light-emitting diode (also referred to below as LED), which in the Light emission region of the light source is arranged and when activated at least for a part of the light exit region changes the light color and / or the brightness. For example, according to the

Invention several light-emitting diodes (1) be present and the light-emitting diodes (1) be divided into several sub-areas, and the sub-areas can be selectively controlled and activated. The gas discharge lamp is for example such

arranged that the light of the gas discharge lamp is radiated flat from the light exit area.

The invention also relates to an effect lighting or an advertising lighting having an inventive lighting means.

In this way it is possible to achieve lighting with visual effects and high luminosity. Description of the preferred embodiments

The invention will be explained in more detail with reference to the accompanying drawings. Show: 1 to FIG. 2 show embodiments of a

inventive illuminant

The invention is based on a

Embodiment of a light bulb explained with light emitting diodes. As shown in FIG. 1, the luminous means has the following elements: - At least one gas discharge lamp (2), the one

Lighting chamber (LK) illuminates and with a certain light color and brightness from the light exit area (LB) lights out,

- At least one light emitting diode (1) in the

Light emission region (LB) of the light source is arranged and when activated at least for a part of the light exit region (LB) changes the light color and / or brightness, characterized in that the light-emitting diode (1) is selectively controllable and only at a reduction in brightness of the

Gas discharge lamp is driven.

The light source can be designed, for example, as an energy-saving lamp with a gas discharge lamp. The

Gas discharge lamp may be surrounded by a glass bulb or a transparent plastic shell. The interior of the glass bulb or the plastic shell in this case forms the light chamber (LK). The light exit region (LB) would be, for example, the outer surface of the glass envelope or the plastic envelope. As an alternative to the glass envelope or the plastic envelope, a common lens or similar optics or other cover may be fitted over the light emitting diode (1) and the gas discharge lamp (2).

By selectively controlling the light-emitting diode (1), a change in the light color when changing the brightness of the gas discharge lamp can be effected. The activation of the light-emitting diode can be coupled to the heating circuit of the electrodes of the gas discharge lamp (2). For example, the heating circuit a

Heating transformer on iron, preferably the discharged on the secondary side of the heating transformer

Energy is used to power the electrodes of the gas discharge lamp (2) and thus for heating. Of the

Heating transformer can be powered by a high frequency voltage. The heating transformer can, for example, to the operating circuit of the gas discharge lamp

be coupled. The heating transformer can

for example, to the resonant half-bridge of

Operating circuit of the gas discharge lamp to be coupled. In this case, the heat output to be transmitted may depend on the frequency of the resonant half-bridge. Of the

Heating transformer, for example, by a

high-frequency controlled switch, which is arranged on the primary side of the heating circuit, are clocked. In this case, the heat output to be transmitted may depend on the duty cycle of the high frequency controlled switch.

The light-emitting diode (1) can be activated when the heating power transmitted by the heating circuit has a

exceeds certain value. For example, a diode that has a voltage above a certain voltage

Passing heater current, or by an actively switchable switch, the control of the light emitting diode (1) can be achieved from a certain value. For example, a capacitor can be charged by the secondary side of the heating circuit. As soon as due to the increased

Heating power when falling below a certain

Degree of brightness of the gas discharge lamp (2) rises so high that the voltage across the capacitor exceeds a certain value, the diode can turn on and thus the LED (1) are fed with a current and thus activated. The light-emitting diode (1) can be designed as a red light-emitting diode. The red light-emitting diode (1) can be designed as a color-converted light-emitting diode.

The brightness of the gas discharge lamp (2) can be adjusted depending on a signal transmitted via the supply voltage. The brightness of the gas discharge lamp (2), for example, depending on a

Phase angle or phase section signal. The adjustment of the brightness, for example, via a change in the frequency or the duty cycle of the operating circuit of the operating device for the

Gas discharge lamp, for example via the

Frequency change in a resonant half-bridge.

Thus, the light-emitting diode (1), for example, also

be controlled when the brightness of the

Gas discharge lamp (2) adjusting transmitted signal falls below a certain value (i.e.

reached certain low dimming value). From this

Can fall below by an actively switchable

Switch the activation of the LED (1) can be achieved. For example, it can be the active one

switchable switch can be switched on and thus the light emitting diode (1) are fed with a current from the heating circuit and thus activated.

Thus, a method for controlling a

Illuminant allows, with

at least one gas discharge lamp (2),

- At least one light emitting diode (1), wherein the control of the light emitting diode to the heating circuit of the electrodes of Gas discharge lamp (2) is coupled and the light emitting diode (1) is driven when the heat transferred from the heating circuit heating power a certain value

exceeds.

In the presence of a plurality of light-emitting diodes (1), the light-emitting means can also be provided by the selective activation of the partial regions of the light-emitting diodes (1)

Lighting scenarios can be achieved.

The gas discharge lamp (2) can illuminate a light chamber (LK) and the transparent support element (3) can cover the light chamber in its light exit area. The light chamber (LK) may have a reflective back wall and reflective side walls. Preferably, the light chamber (LK) has a certain depth in order to achieve a uniform possible light mixture. The gas discharge lamp (2) is preferably spaced from the light exit area. Thus, it is possible that the light of the gas discharge lamp (2) is radiated flat out of the light exit region and for the

Viewer the disturbing influence of the linear

Gas discharge lamp (2) is reduced.

The light-emitting diode (1) can be arranged on the reflective rear wall and / or on a carrier element.

The electrical supply lines for the light-emitting diode (1) can be integrated in the carrier element. A common lens or similar optics or cover may be mounted over the light emitting diode (1). For example, an energy-saving lamp can be formed, wherein at least one gas discharge lamp (2) with a certain light color and brightness from the

Light emitting area out lights, and at least one light emitting diode (1), in the light exit region of

Illuminant is arranged and changes their activation at least for a part of the light exit area, the light color and / or the brightness. In this case, the light-emitting diode (1) is selectively activated and activated only when the brightness of the gas discharge lamp (2) falls below a certain value. Preferably, the brightness of the light emitting diode (1) decreases with decreasing

Higher brightness of the gas discharge lamp (2) increased. In this way, for example, energy-saving lamp can be created to achieve a behavior similar to an incandescent lamp when dimming.

In one possible embodiment, both the

Gas discharge lamp (2) and the light emitting diode (1) are controlled by a common operating device.

Preferably, it is possible that the supply of

LED (1) to the heating circuit of

Gas discharge lamp (2) is coupled. It can also be connected to an output of the heating circuit an additional

Driver stage for the light emitting diode (1) be coupled.

But it is also possible that the

Gas discharge lamp (2) and the light-emitting diode (1) are each controlled by a (separate) operating device, wherein the operating devices preferably via a

Interface are interconnected.

In the case of application for an energy saving lamp that is

Operating device for the gas discharge lamp (2) and the LED (1) in the base of the bulb

integrated, as shown in the example of Fig. 2. The operating device is also connected to a mains supply

(preferably an AC mains) and optionally connected to an emergency lighting battery and an optional light sensor (for example a brightness sensor). As a light sensor, for example, at least one

Brightness sensor be present. Depending on the measurement via the brightness sensor, the brightness of the

Illuminant set or corrected. The control values for the luminosity of the

Gas discharge lamp (2) on the one hand and luminous intensity and / or the color temperature of the light-emitting diode (1)

on the other hand, and / or be set in a certain relationship to each other. The brightness sensor may, for example, in the

Illuminant (within the light chamber (LK)) or outside (to measure the ambient brightness) may be arranged. There may also be a plurality of brightness sensors arranged at different locations to allow light control that is different

Influences can react.

If there is a great need for lighting, for example because the light sensor reports low external brightness, then the operating device controls the gas discharge lamp (2) to a high brightness value. If the mains supply fails or on one

If the emergency lighting supply is switched, the operating device switches on the gas discharge lamp (2) and / or the light-emitting diode (1) (in the event of a power failure, the emergency lighting battery would supply the supply voltage).

When less at low outdoor brightness

Lighting requirement, the operating device controls the gas discharge lamp (2) at a low

Brightness value on.

In addition, even in the event of failure of the gas discharge lamp (2) (for example in case of spiral breakage or occurring rectifier effect), the operating device detect this failure of the gas discharge lamp (2) and then the

Activate the LED (1) instead of the gas discharge lamp (2) (by activating the heating circuit). Thus, a continuation of the lighting by the

Bulbs even after a failure of the

Gas discharge lamp (2) secured.

Due to the changed brightness and / or changed color temperature (or color) of the luminaire, the user can recognize that there is a defect. However, lighting is still guaranteed until replacement. Especially by the possibility of LED 1, compared to

Gas discharge lamp e (2) light with another

Color temperature can be emitted, the user can be well signaled the failure of the gas discharge lamp (2), and still at least a basic lighting will continue to be ensured. The light sensor may also have a color sensor.

Depending on the measurement via the color sensor, the color temperature of the light source can also be set or

Getting corrected. The control values for the luminosity and / or the color temperature of the

Gas discharge lamp (2) on the one hand and the light emitting diode (1) on the other hand, and / or in a certain ratio to each other. The gas discharge lamp (2) also and the light emitting diode

(1) can both be operated by one and the same operating device as already mentioned, wherein

Preferably, for the control of the LED, a coupling to the heating circuit of the gas discharge lamp is present. The operating device can be connected via various

Output connections for controlling the gas discharge lamp

(2) and the light emitting diode (1), wherein the

Operating device via the respective output terminals j eweils the operating voltage and current required for the operation of the lamp to be operated outputs. The operating device can also each have a specific

Operating circuit for controlling the gas discharge lamp (2) and a specific operating circuit for controlling the light-emitting diode (1).

For example, the operating circuit for the

Control of the gas discharge lamp (2) be designed as a resonant half-bridge and for driving the light emitting diode (1), the operating circuit as

Be implemented buck converter. For example, the buck converter can be powered by an output of the heating circuit of the gas discharge lamp (2}. The operating mode of the operating circuit can be changed in that the control of the switching elements of the operating circuit to the respectively required

Operating mode is adjusted.

For example, the operating circuit for the

Switching regulator, for example as buck converter, isolated flyback converter (flyback converter) or

Resonant converter such as designed as a resonant half-bridge. The two operating circuits can be activated simultaneously or alternately, depending on the desired type of operation of the gas discharge lamp (2) and the light-emitting diode (1). Both operating circuits can be activated by a common

Power factor correction circuit are fed, for example by a boost or SEPIC PFC.

The operating device may be designed so that it can be powered by an emergency lighting battery. The operating device may further include a battery charging circuit that can charge the emergency lighting battery when a mains voltage is applied.

As already mentioned, the operating device or the two operating devices may have an interface. This control line may also be implemented as a wireless connection (e.g.

Supply voltage transmitted signal or over Infrared or radio). About this control line can the operating device or two operating devices a

Ansteuerinformation be transmitted, for example, on the desired brightness. Preferably, as the control information, for example, the desired

Brightness of the gas discharge lamp transmitted.

With the aid of the luminous means according to the invention it is thus possible, the lighting in their light color and

Adjust brightness and change.

According to the invention, therefore, a light source such as an energy-saving lamp can be formed, which is suitable for effect lighting.

Claims

Claims ;

1. Lamp, preferably for effect lighting, with

- At least one gas discharge lamp (2), which illuminates a light chamber (LK) and with a certain light color and brightness from the

Light emission area (LB) lights out,

- At least one light emitting diode (1) in the

Light exit area (LB) of the bulb

is arranged and, when activated, at least for a part of the light exit region (LB) changes the light color and / or the brightness, characterized

that the light-emitting diode (1) is selectively controllable and only when the brightness of the

Gas discharge lamp is driven.

2. Lamp according to claim 1,

characterized,

that by the selective control of the LED

(1) causing a change in light color when changing the brightness of the gas discharge lamp.

3. Lamp according to claim 2,

characterized ,

that the control of the LED to the

Heating circuit of the electrodes of the gas discharge lamp

(2) is coupled.

4. Lamp according to one of claims 1 to 4,

characterized ,

that the light-emitting diode (1) is activated when the Heating power transmitted by the heating circuit exceeds a certain value.

Illuminant according to Claim 4,

characterized,

that the light-emitting diode (1) as a red light emitting diode

is trained.

Illuminant according to one of Claims 5,

characterized,

that the red light-emitting diode (1) is designed as a color-converted light-emitting diode.

Illuminant according to one of Claims 1 to 6, characterized

that a common lens or similar optics or cover over the light emitting diode (1) and the

Gas discharge lamp (2) is mounted.

Illuminant according to one of claims 1 to 7, characterized

the brightness of the gas discharge lamp (2) is set as a function of a signal transmitted via the supply voltage.

Illuminant according to one of Claims 8,

characterized ,

that the brightness of the gas discharge lamp (2) depends on a Phasenanschnitts- or

Phase section signal is set

Method for controlling a luminous means, with - at least one gas discharge lamp (2), - At least one light emitting diode (1), characterized

marked,

that the control of the LED to the

Heating circuit of the electrodes of the gas discharge lamp (2) is coupled and the light-emitting diode (1) is driven when the heat transferred from the heating circuit exceeds a certain value.