ES2882013T3 - Recessed LED light unit - Google Patents

Abstract

A recessed LED light unit, in particular to be applied to plates constituting false walls and/or false ceilings, comprising: a support (2) on which an LED element (3) is fixed, which is provided with lateral fins (4) for application to the inner part of a plate (L), to which the light unit is applied, a plate-like member (7) that can be fixed to the support (2) and that has a through opening (8) through which the light emitted by the LED element (3) of the light unit is emitted outwards, the LED element (3) being mounted in a position interposed between the support (2) and the plate-like member (7), substantially in vertical alignment with the through opening (8), characterized in that it comprises a plate-shaped element (9) that is interposed between the support (2) and the plate-shaped member plate (7) and which is mounted in such a way that it slides in a limited way on the member, because the plate-shaped element (9) is p provided with a first through hole and a second through hole (10, 11), which are adjacent to each other, the first through hole (10) being capable of being applied by a screen or lens element (12) and because the plate-shaped element (9) is movable between a first position, in which the first through hole (10) is arranged in correspondence with the through opening (8), to diffuse the light emitted by the LED element (3), and a second position, in which the second through hole (11) is arranged in correspondence with the through opening (8), the LED element (3) being removable from the light unit through of the second through hole (11) and of the through opening (8).

Description

DESCRIPTION

Recessed LED light unit

The present invention relates to a recessed LED light unit, having the characteristics set forth in main claim 1.

In the specific technical field to which the invention refers, light devices or units are known that are configured to produce lighting points of the type called "recessed light", thus defined because it is intended to be inserted, at least partially or totally, in a support structure, which is generally made up of plasterboard plates, which has the function of cladding such as false walls and / or false ceilings. Typically, these recessed light units comprise a plate-shaped support having a small thickness and to which the light source is attached, for example an LED element, and which is provided with lateral wings to engage with the internal part of the the plate to which the light unit is applied. A plate-shaped member is fixed to the support which remains externally visible during application of the light unit and which has a through opening, through which the light emitted by the LED element is emitted outwards. In this way, it is interposed between the bracket and the plate-shaped member, substantially in vertical alignment with the opening. An example of an LED light unit with the characteristics set out above is known from the Applicant's own production. For example, EP2886948A1 describes an embedded LED light unit according to the preamble of claim 1.

Lighting devices of this type generally do not allow the LED element to be easily removed from the light unit, once the wall application has been made. In fact, once the support is positioned and fixed to the plasterboard, the plate-like member that is externally visible on the wall is subjected to external leveling with the plasterboard. Therefore, if it is necessary to access the LED, for example, in order to replace it if necessary, it is necessary to disassemble the surface finish that is associated with the plate member and remove the anchor seat bracket. which is provided on the cardboard plasterboard. This operation, although not often required due to the long life of LED elements, is quite complex and difficult to perform when necessary.

The main objective of the invention is to provide an LED light unit for recessed applications that is structurally and functionally configured to overcome the limitations that have been set out above with reference to currently available solutions. This object and other objects that will be more clearly appreciated below are achieved with the invention by means of a recessed LED light unit which is constructed in accordance with the appended claims.

According to a first aspect of the invention, a recessed LED light unit, in particular to be applied to plates that constitute false walls and / or false ceilings, comprises a support for fixing an LED element that is provided with wings. sides for application to the internal part of the plate, to which the light unit is applied, a plate-like member that can be fixed to the support and that has a through opening, through which the light emitted by the LED element of the light unit is emitted outwards, the LED element being mounted in an interposed position between the bracket and the plate-like member, substantially in vertical alignment with the aperture, the LED light unit further comprises an element similar to a plate interposed between the bracket and the member and which is mounted so as to slide in a limited manner on the member, the plate-like element being provided with a first through hole and u n second through hole, which are adjacent to each other, the first hole being capable of being applied to a screen or lens element, and the plate-like element being movable between a first position, in which the first hole is arranged in accordance with the through hole to diffuse the light emitted by the LED element, and a second position, in which the second hole is arranged according to the opening, the LED element being removable from the light unit through the second hole and The opening.

According to a second aspect of the invention, the LED element can be fixed to the bracket by screwing means, which can be screwed in or unscrewed, from the outer side of the light unit, by means of a screwing tool that is guided through the opening and the second hole.

According to another aspect of the invention, the LED element is capable of being fixed to the support by means of magnetic connection means.

According to another aspect of the invention, the diameter of the second hole is selected to have a value between 9 and 16 mm.

According to another aspect of the invention, the holder is constructed of a thermally conductive material to discharge the heat produced by the LED element.

According to another aspect of the invention, the plate-shaped element is received at least partially within a seat that is formed in the member and that has a formation that allows it to guide the element during the sliding movement between the first position. and the second position.

Additional features and advantages of the invention will be better appreciated from the following detailed description of a preferred embodiment thereof which is illustrated by way of non-limiting example with reference to the accompanying drawings, in which:

• Figure 1 is a perspective view of an LED light unit constructed in accordance with the present invention,

• Figure 1A is an exploded perspective view of the LED light unit of Figure 1, • Figures 2 and 3 are a front elevation and a side elevation of the LED light unit of the previous figures, respectively,

• figure 4 is a plan view of the LED light unit of the previous figures,

• Figure 5 is a view corresponding to that of Figure 4, in which the light unit is shown in a different operating state,

• Figures 6 and 7 are perspective views of a detail of the previous figures, shown in different operating positions,

• Figure 8 is an additional view, in front elevation and in partial section, of the light unit of the previous figures, shown in the operating condition of Figure 5.

With reference to the cited figures, an embodiment of a recessed LED light unit which is constructed in accordance with the present invention is generally designated as 1.

The unit is mainly configured for applications on L plates (see figure 8), for example cardboard-plaster, which constitute false walls and / or false ceilings. Typically, the wall constructed of plasterboard is placed spaced from the rear wall / ceiling and the rear portion of the light unit is received in the gap that has been produced. The light unit 1 is constituted by two main portions, different from each other and intended to be mutually mounted, as will be appreciated in greater detail below. The light unit comprises a plate-shaped support 2, on which an LED element 3 (as a light source for the light unit) is fixed. The support is provided with a pair of opposite lateral wings 4 to engage with the internal part of the plasterboard L, to which the light unit is intended to be applied. The bracket is preferably constructed of a material with high thermal conductivity (eg aluminum or other similar material or metal alloy that is suitable for the purpose), in order to rapidly dissipate the heat produced by the LED. The LED is applied to the bracket by screw-type fixing means 5. A preferred embodiment envisages that an LED printed circuit board 6 (also named using the term PCB) is provided with grommets or notches for applying one or more fixing screws. 5.

In a construction variant, the printed circuit board 6 can be fixed to the support 2 by means of magnetic connection means.

The second portion of the light unit is constituted by a plate-like member 7 that can be fixed to the support 2 and has a through opening 8, which is preferably formed by a cylindrical hole, through which the light emitted by the LED element 3 is emitted to the outside. The LED is mounted in a position interposed between the bracket 2 and the plate-shaped member 7 so that it is substantially in vertical alignment with the aperture (i.e. the light source of the LED is arranged in the direction of the axis main of the cylindrical orifice that defines the opening 8). It will be understood that, alternatively, it is possible to provide holes having a different formation than the cylindrical one described above.

The plate-shaped member 7 serves to protect the LED in the seat closure which is formed in the plasterboard L and therefore remains visible after the application is completed. Furthermore, it is advantageously constructed with a material that facilitates the external leveling operation with the plasterboard.

According to a main feature of the invention, the light unit 1 further comprises a plate-like element designated by 9 and which is mounted in a limited sliding manner on the member 7 and which is provided with holes first and second, designated by 10 and 11, respectively, which extend through the thickness of the element 9 and which are mutually adjacent, and with respective parallel principal axes.

The first hole 10 is further closed by the application of an element 12 in the form of a screen or lens, which is suitable for shielding the hole 8 or diffusing the light emitted by the LED with a preselected angle of the light rays, respectively.

In another alternative, the element 12 can be constructed as a reflector of the light rays emitted by the LED. The holes 10, 11 are furthermore preferably constructed with a circular cross section and with an identical diameter of one and the other, this selection in any case representing a preferred but not limiting embodiment.

The plate-like element 9 is received, at least partially, in a guided manner within a seat 13 which is formed in the member 7, which has a formation such as to guide the element 9 during a translational sliding movement, the magnitude is bounded by the opposite end of the seat.

During the sliding movement, the element 9 is movable in translation between a first position (figure 4), in which the first hole 10 is arranged in correspondence with the opening 8 (that is, in vertical alignment with the opening 8) to allowing the diffusion outwards of the light emitted by the LED, and a second position (figure 5), in which the second hole 11 is the one that moves in correspondence with the opening 8.

In this second position (with the hole 11 and the opening 8 substantially in vertical alignment), it is provided that the LED element 3 can be extracted from the light unit 1 by passing through the hole 11 and the opening 8. More in particular , preferably there is a provision that the diameter of the second hole 11 is preferably selected with a value comprised between 9 mm and 16 mm, and that the LED element 3 and, in particular, the printed circuit board 6 thereof have dimensions such that they can be removed / inserted with a reduced relative clearance, through the opening 8 and the hole 11. The operation of the light unit is as follows.

In a use condition, with the LED light activated, the plate-type element 9 is arranged in the first position, in which the hole 10 is vertically aligned with the opening 8, and the light emitted by the LED element 3 is diffused outward through screen or lens element 12 that engages hole 10.

If it is desired to remove the LED element 3 from the light unit, for example to replace it, the plate-type element 9 is initially moved from the first position to the second (for example, by the tip of a screwdriver inserted from the outside in the opening 8, to drive the element 9 to the sliding movement). Once this position is reached, the fixing screws 5 of the LED are accessible through the opening 8 and the hole 11 and can be unscrewed with a screwdriver tool C which is inserted through them from the outside. Once the screws 5 have been released, the LED element 3 can be removed by passing it through the hole 11 and then discharged through the opening 8 (shown in figure 8 with broken lines). In this regard, the electrical connection cables of the LED are selected with a suitable length to allow the extraction of the LED from the light unit with the cables connected to it (figure 8). After replacement, the new LED element 3 can be inserted again through the opening 8 and the hole 11 to fix the corresponding screws 5 against the bracket 2.

If the LED is fixed to the bracket with a magnetic connection system, the removal operation is even easier. In fact, it is simply necessary to move the LED away from the bracket by applying a pull force greater than the magnetic attraction forces to separate the LED from the bracket and allow the LED to be removed from the light unit, in a manner generally similar to the embodiment. previous.

The invention thus achieves the objectives set by achieving a series of advantages that have been cited with respect to known solutions. In particular, the recessed light unit according to the invention ensures the interchangeability of the LED element that is received in the light unit, without requiring the disassembly or removal of any of the structural members of the light unit, thus preserving the original recessed application made.

Claims (6)

1. A recessed LED light unit, in particular to be applied to plates that constitute false walls and / or false ceilings, comprising: a support (2) on which an LED element (3) is fixed, which is provided with lateral fins (4) for application to the internal part of a plate (L), to which the light unit is applied , a plate-like member (7) that can be fixed to the bracket (2) and has a through opening (8) through which the light emitted by the LED element (3) of the light unit is emitted towards the exterior, the LED element (3) being mounted in a position interposed between the support (2) and the plate-like member (7), substantially in vertical alignment with the through opening (8), characterized in that it comprises a plate-shaped element (9) that is interposed between the support (2) and the plate-shaped member (7) and is mounted so that it slides in a limited way on the member, because the Plate-shaped element (9) is provided with a first through hole and a second through hole (10, 11), which are adjacent to each other, the first through hole (10) being capable of being applied by a screen or lens (12) and because the plate-shaped element (9) is movable between a first position, in which the first through hole (10) is arranged in correspondence with the through opening (8), to diffuse the light emitted by the LED element (3), and a second position, in which the second through hole (11) is arranged in correspondence with the through opening (8), the LED element (3) being removable from the light unit passes through the second hole (11) and the through opening (8). 2. An LED recessed light unit according to claim 1, wherein the LED element (3) can be fixed to the bracket (2) by screwing means, which can be screwed or unscrewed, from the outer side of the unit of light, by means of a screwing tool that is guided through the through opening (8) and the second through hole (11). 3. An LED recessed light unit according to claim 1, wherein the LED element (3) can be fixed to the bracket (2) by means of magnetic connection means. A recessed LED light unit according to one of the preceding claims, wherein the diameter of the second through hole (11) is selected to have a value between 9 and 16 mm. A recessed LED light unit according to one of the preceding claims, wherein the bracket (2) is constructed of a thermally conductive material to discharge the heat produced by the LED element (3). A recessed LED light unit according to one of the preceding claims, wherein the plate-like element (9) is received, at least partially, within a seat (13) that is formed in the typical member. plate (7) and having a formation such as to guide the plate-like element (9) during the sliding movement between the first position and the second position.