Patent Description:
Spot head luminaires or projector luminaires or spotlights have highly relevant applications in retail shops, entertainment, and gallery exhibition, to name a few. Quite often these types of luminaires are installed on the ceiling by means of a rail system. After installation, the direction of illumination may be changed as desired.

<CIT> discloses a luminaire with a mounting system comprising an adapter that can be attached to a rail system.

If a commissioner would like to install a spothead or spot light or projector luminaires, he would need to install a rail system or a track system on the ceiling and mount such a lighting device with the rail system or the track system. Mounting may require few interfacing components for fixing the lighting device with the track or rail system by means of few screws. This is disadvantageous the lighting device may become fixed to the rail by screws. Therefore this solution makes the installation difficult and also makes the on-site servicing difficult. As a result, an alternative solution for the mounting of spot head luminaires is needed that is also flexible enough to allow easy repair or rearrangement.

It is therefore an object of the present invention to provide an innovative mounting solution to mount the spot head luminaires directly onto the general area lightning rail or track system in a modular fashion that requires only a few components and easily attachable or detachable without the need of screws. At the same time, ensuring the robustness of the arrangement.

According to a first aspect of the invention, a luminaire is provided. The luminaire comprises, a mounting system, a lighting device, and a mounting device. The mounting system comprises an adaptor plate that can be attached to a rail system. The lighting device comprising a shaft having a flange on a second end and configured to have a lamp on a first end. The mounting device comprises at least a pair of interface plugs. The pair of interface plugs are configured to be attached together to form an inner perimeter around a hollow space and the inner perimeter can embrace the second end of the shaft that is received through an opening of the adaptor plate. The inner perimeter is substantially the same or larger than an outer perimeter of the shaft, but smaller than the flange. The opening of the adaptor plater is bigger than the flange, and smaller than the mounting device when the pair of the interface plugs are attached together.

The adaptor plate has one or more openings or cutouts through which the shaft of the lighting device can be pulled into the adaptor plate.

The pair of interface plugs may comprise a slot in the form of a hollow space for at least embracing the shaft. The pair of interface plugs may hold onto the shaft by means of friction.

The pair of interface plugs can be pushed together onto the shaft and/or around the flange of the shaft. The interface plugs, therefore, extend onto the flange providing lateral support across the adaptor plate axis for securing the lighting device without falling out through the opening. Therefore, this pair of interface plugs act as the mounting structure.

The pair of interface plugs may have complementary pin and slot features for easy alignment and attachment. The attachment may be based on friction.

Alternatively, the pair of interface plugs may be configured to be attached together by means of snap fitting.

The mounting device with the pair of interface plugs may be attached together has a rectangular or a square shape.

The mounting device may comprise more than two interface plugs that can be attached together to form a unibody.

The adaptor plate may comprise a number of trunking profiles.

The adaptor plate may have a first trunking profile configured to secure the mounting device with the adaptor plate by snap-fitting. The pair of interface plugs attached together by means of pin and slot may not have a strong fixation. The attached interface plugs along with the lighting device may be pushed down into the adaptor plate first trunking profile and snap fitted into the adaptor plate which guarantees no orthogonal movement with respect to the adapter plate. When the interface plugs are snap fitted together, they may form a rectangular or square shape on the periphery. So when the pair of interface plugs are secured within the adaptor plate, they may be tightly locked or secured with potentially no room for rotational or lateral movement.

The adaptor plate may have a recessed profile around the opening to at least partially accommodate the mounting device.

The recessed profile may have a similar shape as the mounting device.

This may be considered as an additional or alternative measure for strongly attaching the pair of interface plugs together and securing the mounting device with the adaptor plate with potentially no room for rotational movement.

The pair of the interface plugs may have a partial extension through the opening of the adaptor plate.

The interface plugs may also have a protruding profile that extends through one or more openings or cutouts of the adaptor plate. This protruding profile may also have the same shape as the adaptor plate openings or cutouts for ensuring that there is no rotational movement of the interface plugs once the lighting device is secured with the adaptor plate.

The adaptor plate may have a second trunking profile configured to secure a driver of the lighting device with the adaptor plate by snap-fitting.

Alternatively, the adaptor plate may have a second trunking profile configured to secure a driver of the lighting device with the adaptor plate by double-sided tape.

The adaptor plate may have a third trunking profile configured to secure the adaptor plate with the rail system by snap-fitting.

The adaptor plate may have a fourth trunking profile configured to secure a cable holder with the adaptor plate by snap-fitting.

The adaptor plate may have several trunking profiles suitable for easy attachment with the rail or track system, the mounting device, and several other luminaire components by means of the snap fitting. The adaptor plate with a snap-fit profile for the interface plugs and the driver (other electronics components) is also part of the invention. The commissioner or the installer can assemble and mount the lighting device onto the rail system in a way that does not require tools such as a screwdriver, but by utilizing the flexibility of the suspended rail and utilizing the flexibility of the adaptor plate profile that allows snap-fitting of modular components.

The luminaire may comprise a safety cord and one end of the safety cord may be configured to be attached to the rail system and another end of the safety cord may have a hook that may be configured to be snap-fitted with one of the pair of interface plugs.

The safety cord may be fixed to the rail system by a rivet.

The safety cord ensures the safety of the mounting system such that the lighting device does not accidentally fall if the attachment between the adaptor plate and the rail system fails.

Other objectives, features, and advantages of the present inventive concept will appear from the following detailed disclosure, from the attached claims as well as from the drawings. A feature described in relation to one of the aspects may also be incorporated in the other aspect, and the advantage of the feature is applicable to all aspects in which it is incorporated.

Embodiments of the invention as well as additional objects, features and advantages of the disclosed devices, methods, and systems, will be better understood through the following illustrative and non-limiting detailed description of embodiments of devices, methods, and systems, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which:.

<FIG> and <FIG> show exploded views of a luminaire <NUM> where a pair of interface plugs <NUM> and <NUM> are being assembled together with a flange <NUM> of a lighting device <NUM> and is mounted from an adaptor profile <NUM>.

The luminaire <NUM> comprises a mounting system <NUM> comprising an adaptor plate <NUM> that is attachable with a rail system <NUM>. The rail system <NUM> is attached or suspended from a surface, perhaps a ceiling surface. As shown in <FIG>, adaptor place <NUM> and the rail system <NUM> have complementary trunking profiles that allow easy snap-fitting attachment.

The lighting device <NUM> comprises a shaft <NUM>. On a first end of the shaft <NUM>, a lamp <NUM> is attached. And on a second end, a flange <NUM> is protruding orthogonal to the shaft <NUM>. A suitable example of the light device <NUM> can be a spot head, a spotlight, or projector luminaire. The shaft <NUM> may have a hollow core and necessary electrical lines for the lamp <NUM> can be pass through the shaft <NUM>. The adaptor plate <NUM> has an opening or cutout <NUM> and the second end of the shaft <NUM> is pulled through the opening <NUM>.

In <FIG>, it is shown that when the pair of interface plugs <NUM>, <NUM> can be attached together to form an inner perimeter <NUM> around a hollow space and the inner perimeter <NUM> can embrace the second end of the shaft <NUM> can be accommodated within this hollow space. The inner perimeter <NUM> is substantially the same or larger than an outer perimeter of the shaft, but smaller than the flange <NUM>. The opening <NUM> of the adaptor plater <NUM> is bigger than the flange <NUM>, and smaller than the mounting device <NUM> when the pair of the interface plugs <NUM>, <NUM> are attached together. Hence, a greater protrusion for lateral support within the adaptor plate <NUM> is realized for mounting the lighting device <NUM>.

<FIG> shows a perspective view of the mounting device <NUM> from <FIG>. The mounting device <NUM> comprising at least a pair of interface plugs <NUM>, <NUM> are arranged around the flange <NUM> as shown in <FIG>. As shown in <FIG> and <FIG>, the pair of interface plugs <NUM>, <NUM> has a slot <NUM> within its solid body for accommodating the flange <NUM> of the shaft <NUM>. Although one can assume that the pair of interface plugs <NUM>, <NUM> can be arranged so that the flange <NUM> is located on a side of the pair of interface plugs <NUM> while the lamp <NUM> is located on the other side. In this case, one can imagine a friction-based engagement between the mounting device <NUM> and the shaft <NUM>.

In <FIG> it is also shown that the pair of interface plugs <NUM> and <NUM> have complementary pin <NUM> and slot <NUM> features. Therefore, the pair of interface plugs <NUM> and <NUM> easily aligned with each other and attached together forming a square or rectangular body. The inner perimeter <NUM> of the pair of interface plugs <NUM> and <NUM> are shown to be circular. However, the inner perimeter may also below polygonal. The depth of the slot <NUM> should be enough to accommodate the flange <NUM> as shown in <FIG>.

<FIG> shows a cross-sectional view of the pair of interface plugs <NUM>, <NUM> and the adaptor plate <NUM> assembled within the rail system <NUM>.

The pair of interface plugs <NUM> and <NUM> may be secured together by snap-fitting with each other. Then the interface plugs <NUM> and <NUM> along with the lighting device <NUM> are pushed down into the adaptor plate <NUM> and a first trunking profile <NUM> configured to secure the mounting device <NUM> with the adaptor plate <NUM> by snap fitting. The mounting device <NUM> with the pair of interface plugs <NUM>, <NUM> attached together has a square or rectangular shape. Therefore, when the mounting device <NUM> is secured with the adaptor plater <NUM> by snap fitting, there is no excess room for rotation around the shaft center axis <NUM>. This provides stability of the mounting structure <NUM> against any axial rotation.

The mounting device <NUM> with the pair of interface plugs <NUM>, <NUM> attached together may also have a rectangular shape. Importantly, the width between the first trunking profiles <NUM> of the adaptor plate <NUM> is substantially the same as the width of the mounting structure <NUM>. Alternatively, the adaptor plate <NUM> may have a recessed profile around the opening <NUM> to at least partially accommodate the mounting device <NUM>. The recessed profile can have a polygonal shape. In this case, the mounting device <NUM> may have a fitting shape with the recessed profile for avoiding axial rotation.

As shown in <FIG>, one of the interface plugs <NUM> has a slot <NUM> for accommodating the flange <NUM> of the shaft <NUM>. By the dashed lines it is indicated that the shaft <NUM> may extend within or through the mounting device <NUM>.

The pair of the interface plugs <NUM>, <NUM> has a partial extension <NUM> through the opening <NUM> of the adaptor plate <NUM>. If the perimeter of the partial extension <NUM> matches well with the perimeter of the opening <NUM>, the stability of the lighting device <NUM> can be further improved against axial rotating when a user is prompted to change the spotlight or spot head illumination direction.

The pair of interface plugs <NUM> and <NUM> may be complementary pin <NUM> and slot <NUM> features for easy alignment.

In <FIG>, <FIG>, and <FIG>, a combination of a mounting system <NUM> and a mounting device <NUM> is shown that allows easy mounting of a lamp <NUM> with snap-fitting components from the luminaire <NUM>. Therefore, no special tools are needed for assembling this luminaire <NUM>, nor it is difficult to change or repair the luminaire <NUM> when it is necessary.

<FIG> shows a safety cord <NUM> with the mounting device <NUM> where the pair of interface plugs <NUM>, <NUM> are attached together. In this figure, it is shown that when the pair of interface plugs <NUM>, <NUM> can be attached together, an inner perimeter <NUM> with a circular shape is formed that is hollow.

One end of the safety cord <NUM> is configured to be attached to the rail system <NUM>. This can be done by riveting. Another end of the safety cord <NUM> has a hook <NUM> that is configured to be snap-fitted with one of the pair of interface plugs <NUM>, <NUM>. This safety cord <NUM> ensures the safety of the mounting system such that the lighting device <NUM> does not accidentally fall if the attachment between the adaptor plate <NUM> and the rail system <NUM> fails.

<FIG> shows a driver <NUM> of a lighting device <NUM> assembled into the adaptor plate <NUM> profile and being fixed by the snap-fit feature. The adaptor plate <NUM> has a second trunking profile <NUM> configured to secure a driver <NUM> of the lighting device with the adaptor plate by snap-fitting. The adaptor plate <NUM> has a third trunking profile <NUM> configured to secure the adaptor plate <NUM> with the rail system <NUM> by snap-fitting. The adaptor plate <NUM> may have a fourth trunking profile configured to secure a cable holder or other components with the adaptor plate <NUM> by snap-fitting.

However, one may also secure the driver of the lighting device on the adapter plate by means of double sided tapes.

Therefore, the adaptor plate <NUM> may have several trunking profiles suitable for easy attachment with the rail or track system, the mounting device, and several other luminaire components by means of the snap fitting.

Claim 1:
A luminaire (<NUM>) comprising:
a mounting system (<NUM>) comprising an adaptor plate (<NUM>) that can be attached to a rail system (<NUM>),
a lighting device (<NUM>) comprises a shaft (<NUM>) having a flange (<NUM>) on a second end and configured to have a lamp (<NUM>) on a first end, and
a mounting device (<NUM>) comprising at least a pair of interface plugs (<NUM>, <NUM>),
wherein the pair of interface plugs (<NUM>, <NUM>) are configured to be attached together to form an inner perimeter (<NUM>) around a hollow space and the inner perimeter (<NUM>) can embrace the second end of the shaft (<NUM>) that is received through an opening (<NUM>) of the adaptor plate (<NUM>),
wherein the inner perimeter (<NUM>) is substantially the same or larger than an outer perimeter of the shaft, but smaller than the flange (<NUM>), and
wherein the opening (<NUM>) of the adaptor plater (<NUM>) is bigger than the flange (<NUM>), and smaller than the mounting device (<NUM>) when the pair of the interface plugs (<NUM>, <NUM>) are attached together.