Patent ID: 12209744

DETAILED DESCRIPTION

InFIG.1there is shown a single lighting unit1which in a schematic manner shows one embodiment of a lighting unit1included in an indoor lighting and climate system according to the invention, wherein a plurality of such lighting units1are used.

In the shown embodiment the lighting unit1is positioned in a ceiling20of a room2. The positioning in a ceiling20is no way limiting, since it may as well be applied in a wall or a floor.

A control unit3is arranged in communication with the plurality of such lighting units1that are arranged within that room2. At least one sensor4is arranged within the room2providing measurement signals to the control unit3to control each one of the lighting units1according to the predefined settings.

Each lighting unit1comprises a cup-shaped housing100with an opening101directed into the room2. The cup-shaped housing100comprises an inner cup shaped member107enclosed at a distance by an outer cup shaped member108, such that an annular channel106is formed between the two107,108. Within the housing100there is a lamp103attached to a lamp attachment102. Between the housing100and the lamp103there is an inside space105. Adjacent the bottom of the cup-shaped housing100there is arranged a fan104. The fan104is arranged to produce a forced airflow2through the inside space105. An inner side107A of the inner cup shaped member107, at least a cylindric wall part thereof, separates the open inside space105from the annular channel106. The annular channel106is provided to lead the forced airflow out into the room2.

Accordingly, there is a flow path2of air first entering into the lighting unit1centrally through an opening at the inlet101of the lighting unit1that passes through the open space105within the cup-shaped housing100and thereby absorbs heat from the lamp103. The fan104further forces the airflow2into an opening109in the back wall110of the lighting unit1and then further on into the annular channel106that leads the airflow2out from the lighting unit1into the room2.

In a preferred embodiment there is a filter111arranged adjacent the outflow from said flow channel106, which filter111may improve the quality of air within the room by filtering out undesired particles.

In the embodiment that is shown inFIG.1the inlet109into the flow channel106is positioned at a large distance h from the front part of the lighting unit1, which provides the advantage that the area used for absorption of heat of the airflow2is maximized in regard to the total height H of the lighting unit1. However, it is of course feasible to have the inlet109at a lower position and still obtain the main advantages according to the invention, i.e. absorb heat from the lamp103. In a preferred embodiment the distance h to the inlet109from the front part should be at least 50% of height H of the lighting unit, more preferred at least 70% and even more preferred at least 90%.

The lighting unit1is arranged with a sensor and a processor device30which is equipped with appropriate sensors, e.g. for temperature and possibly also further parameters such as airflow, humidity, etc. The processor is equipped with appropriate hardware and software to handle the desired needs in conjunction with individual control of the lighting unit1and to facilitate control signal exchange with the control unit3, in order to control each one of the lighting unit1individually to provide individually adapted heat supply by each one of the lighting units1.

As presented inFIG.1in a first embodiment the cup-shaped housing100may be in the form of an integral unit, including both the outer cup shaped member108and the inner cup shaped member107(or cylindrical inner wall107) defining the annular outflow channel106between them. The lamp attachment102may be attached to the inner wall107in various manners as is evident for a skilled person within the field. The cup-shaped housing100may be positioned in a hole21in the ceiling20/floor/wall having a shape adapted to the outer shape of the cup-shaped housing100, which preferably is circular.

An attachment member114, preferably a bayonet fixation, is used to fixate the housing100to attachment members22that are fixed to the ceiling20, which may be achieved in various manners as is evident for the skilled person.

InFIG.2there is schematically presented an installation showing a plurality of lighting units11.1,1.2,1.3that are installed to supply both heat and cooling to a room (indicated in the lower right-hand part ofFIG.2). At the upper left-hand part ofFIG.2there is schematically shown more in detail how one such lighting unit1may be connected to an external heating and/or cooling device5. The heating and/or cooling device5includes a plurality of connection54,55intended for connection to lighting units1. Further, the external heating and/cooling device5includes a housing having air inlets53on at least one side thereof and fans52arranged to force air from the inlets53via heating and/or cooling members out into the connections54,55.

As seen in the upper left-hand side ofFIG.2each lighting unit1by means of connections112,113may be connected to the external heating and/or cooling device5via two tubes50,51, or indeed merely one such tube, e.g. if merely supply of heat is desired. The connections112,113to the lighting unit1are preferably positioned close to the outlet of the heat flow channel106. One of the tubes50is connected to a heat flow outlet from the external heating and/or cooling device5, whereas the other tube51is connected to an outlet55of the cooling device of the heating and/or cooling device. Accordingly, the system shown inFIG.2may individually provide for controlled supply of either external heat to the out-flow channel106of the lighting unit1or extra heat, which may be automatically controlled by the control unit3by means of appropriately defined settings within the control program of the software used to control the control unit3.

InFIG.3there is shown an exemplary view of the inner of a heating and/or cooling unit5. There is shown a plurality of heat and/or cooling producing elements56, preferably in the form of peltier elements, providing cold air on one side and hot air on the other side being connected to at least one of the plurality outlets54,55, to supply heat and cooling respectively. There is also indicated a first sub-unit57and second sub-unit58, e.g. power supply unit and control unit respectively.

InFIG.4there is shown a modified embodiment of a lighting unit1according to the invention. Most basic features of the modified embodiment are the same as have been described above and will not be repeated, instead there will a focus on different features.

One main difference is that the cup-shaped housing100in this embodiment is not integral but instead there is a separate outer cup shaped member108and a separate inner cup shaped member107forming the heat flow channel106between them. Accordingly, the outer cup shaped member108has a larger cup-shaped form than the inner cup shaped member107. Further, it is shown that at the inner wall of the inner cup shaped member107there may be formed turbulence creating elements115, and or swirl creating, intended to increase heat convection from the lamp103to the air flow during passage through the open space105. Moreover, it is shown that isolating and/or heat repelling surface layers116may be applied to at least one of walls107A,108A forming the outlet channel106, preferably both walls107A,108A. Further an inspection lid118may be arranged.

In an alternative configuration one or more lamp/s3may be arranged with a further heat generating device, e.g. heat resistance device (e.g. resistance wire), that may be activated at times when there is a need of further heat delivery. In this manner there is provided an even large range within which an arrangement according to the invention may operate, to fulfil desires regarding indoor climate.

The invention is not limited to that described above but may be varied within the scope of the claims. It is realized that many supplementing functions may be achieved by appropriate software in the central control unit, e.g. a built-in technical solution for a plurality of lighting units in a room, e.g. LED lamps, with a so-called “Wake up” function, where the power of the lighting units progressively increase and possibly according to a predefined pattern producing an effect similar to sun rise.