NO333803B1 - Lamp part with a base part and a vessel-shaped cover, as well as the base part for a lamp - Google Patents

Abstract

A lighting unit (1) comprises a base (2) having a lamp holder and a trough-shaped cover (5) removably connected to the base. The unit has a screen (7) between the base and the base of the cover (5a) and this is quite transparent at least in the region of the screen. An Independent claim is also included for a base for the above having long sections to which end pieces are attached.

Description

The invention relates to a lamp and a base part as stated in the introduction to patent claims 1, 7 or 11.

A lamp or a base part of this type is known. The known lamp or base part has an elongated and rectangular structural shape, which consists of a mainly flat base part with means for attachment to a support, for example on a wall or a ceiling, as well as a vessel-shaped cover, which then by means of detachable attachment elements is connected to the base part. This previously known lamp fulfills a less demanding lighting purpose, for example in stairwells, cellars, damp rooms, garages, halls and the like. As the covering consists of opal material, this known lamp is glare-free, which, however, affects the utilization of the light performance to a certain extent.

From CH 528796 A, a lamp is known with a base part which carries a socket for at least one lamp and a vessel-shaped cover which is connected to the base part by means of detachable fasteners.

It is then an object of the invention to improve the light performance of a lamp of the type indicated above.

This task is then solved with the help of the special features stated in the independent patent claims 1, 7 or 11. Advantageous further developments of the invention are described in the present subclaims.

The present invention thus relates to a lamp with a base part which carries a socket for at least one lamp and a tub-shaped cover which is connected to the base part by means of detachable fasteners. The cover has, with respect to its width, a narrowed connection opening, from the edge of which the cover wall section extends inwards from the side walls. The base part is configured in such a way in its area towards the cover that, in the assembled state of the cover, a recess is formed which is in any case open laterally and which abuts the cover wall sections, as the recess enables light emission also over the cover wall sections.

In the case of a lamp as indicated in this explanation, at least part of the bottom wall of the vessel-shaped cover can be made of clear transparent material, while a grid is arranged between the cover and the base part. The clearly transparent bottom wall then enables a greater radiation performance, while the grid ensures that the lamp is not dazzled. The room to be illuminated will thus be illuminated with greater light density by the lamp according to the invention, whereby also a person in the illuminated room at any viewing angle remains largely unaffected by the radiated light with regard to glare. The lamp according to the invention is thus suitable with a simple, small and cost-effective design for more demanding lighting purposes, for example in living rooms, offices and the like. The invention is based on the recognition that the tub-shaped cover with good utilization is excellently suited for mounting the grid. Below that, the grid can rest against the bottom wall of the vessel-shaped cover, whereby the position setting of the grid is simplified to a significant extent.

Within the scope of the invention, the side walls of the lamp in relation to their vertical center plane can run parallel or converging towards the base part. The latter design then has the advantage that an increased light emission is achieved towards the lamp's mounting surface. In this way, the lamp's surroundings on the mounting side, for example a ceiling, are better utilized, while at the same time the lighting difference between the lamp and its surroundings is reduced, which is also sought for the purpose of achieving a reduction of lighting contrasts.

The purpose of the invention is also achieved by the embodiment specified in patent claim 7. Advantageous further developments of the invention are then described in the associated sub-claims.

In this embodiment, which appears in patent claim 7, the vessel-shaped cover on the side facing the base part has cover wall sections that extend from the side walls inwards, and which are assigned directly opposite lateral open outlets in the base part. In one embodiment, the lamp's radiating surface is increased by the opening extent of the sockets, so that more radiated light is achieved, but also that the increased radiating surface area is also directed towards the mounting surface, for example a ceiling. Hereby, the lamp's surroundings in the area towards the mounting side are illuminated to a greater extent, and consequently the same advantages as already stated in connection with divergent side walls, which are then directly referred to here to avoid repetition, are then achieved.

Further development of the object of the invention leads to simple, small and cost-effectively produced lamp constructions, whereby the fixing of the grid and/or the vessel-shaped cover can also be improved. With these further developments, the lamp is also improved with respect to its light emission also in the lateral directions.

Furthermore, it is an object of the invention to perform a base part in such a way that it would also be considered for improved lighting in its side directions as well as over its mounting surface.

This purpose is achieved with the help of the special features stated in patent claim 11. Advantageous further developments of the invention are then described in the associated sub-claims.

With regard to the advantages that can be achieved by the design specified in claim 11, to avoid repetition, reference must be made to the description of advantages in connection with the independent patent claim 7. The advantages stated here also apply to the design according to patent claim 11.

In the following, advantageous embodiments of the invention will be discussed in more detail with reference to examples of preferred embodiments.

The drawings then show:

Fig. 1 is a lamp according to the invention in perspective and seen from the side; Fig. 2 the lamp in vertical cross-section; Fig. 3 is an end portion of a base part of the lamp in fig. 1 and indicated in perspective view seen from the left below;

Fig. 4 a special detail of the base part in an enlarged representation; and

Fig. 5 a special detail of the base part in an alternative design and seen in perspective.

The main parts of the lamp, which is designated as a whole by 1, are then a base-shaped base part 2 with simply stated fixing means 3 for attaching the base part 2 to the outside 4 of a mounting body, for example a roof or a wall, a vessel-shaped cover 5, as in by means of fastening means 6 can be releasably connected to the side of the base part 2 which faces away from the mounting surface, a grid 7 which is arranged between the base part 2 and the end wall 5a of the cover 5, as well as further upright fastening means 8 formed by at least one socket holder for holding and electrical connection with a centrally located and two side-arranged lamp units 9, as well as further conventional operating means for electrical power supply.

The preferably elongated lamp 1 mainly exhibits a rectangular or square cross-sectional shape, so that the lamp also in connection with its end faces perpendicular to the central axis in the longitudinal direction exhibits the shape of a rectangular parallelepiped. The preferably planar side walls 5b and possibly also the more or less planar end walls 5c of the cover 5 can also run converging in the direction towards the base part 2, as indicated in fig. 2.

On the side facing the cover 5, the base part 2 is provided with a circumferentially designed ring-shaped projection 2a with a U-shaped cross-section both in the longitudinal and transverse directions, where the cavity in this U-shape is denoted by the reference number 11.

In this design example, the base part 2 is made up of a sheet metal part which can be formed in a single piece. The cover 5 forms with bottom wall 5a as well as side and end walls 5b, 5c made in the form of a vessel, and grasps with a circumferential ring spigot 12 into the cavity 11, so that there is a movement gap between the ring spigot 12 and the ring-shaped projection 2a? which enables assembly, eventual disassembly. The cross-sectional shape of the ring spigot 12 is adapted to the rectangular cross-sectional shape of the ring-shaped projection 2a. The ring spigot 12 is thus narrowed opposite the outside of the cover 5 corresponding to the dimension of the thickness d of the ring projection 2a. Within this narrowing area, a ring-shaped cover wall section 5d extends from the associated side or end walls 5b, 5c to the ring wall 12a on the ring spigot 12. The ring projection 2a is thus directly opposite the cover wall section 5d. The fastening means 6 can for example be formed by holding devices 13, which are active between the ring end 12 and the ring projection 2a and which can preferably be formed by holding projections 13a on the ring projection 2a, and which each engage the underside of a holding projection 13b on the ring end 12 driven by a elastic force. When mounting the building part 5 by insertion, the holding projection 13a, which is for example arranged on spring arms, will automatically be driven out and snap into the underside of the holding pieces 13b, so that the cover 5 will then be releasably attached to the base part 2. Preferably the holding device 13 for releasing the cover 5 arranged so that it can be released by means of a manually exerted pulling force, whereby the holding protrusions 13a also automatically retract. For a secure attachment, two holding devices 13 arranged directly opposite each other and in the middle are sufficient. With the present elongated structure, it may be advantageous in each of the end areas to arrange two mutually opposite holding devices 13.

The base part 2 which is made of ink has a cover wall section 2b which limits the cavity 11 on the upper side and both inner and outer side wall sections 2c, 2d for the cavity, and these wall sections are then interconnected so that they form a box-shaped unit. The outer side wall section 2d projects above the cover wall section 2b towards the mounting side 4. From its free outer edge, a short flange section 2e can extend inwards, so that the side wall section 2d is thereby stabilized. In the present cavity 14 which extends between the free edge of the outer side wall section 2d and the cover wall section 2b, a bulge 2f of the cover wall section 2b can extend, so that an upwardly enlarged free space 11 is created for electric propellants and the like, for example a pre-connection unit 15, which is attached from the underside to the cover wall section 2b, possibly inside the bulge 2f, for example by means of screws not shown.

In the base part 2, there is on at least one side, but here on the two long sides, an opening which is also laterally open to the cover 5 and in the present design example is bounded by two wall sections 2h, 2i which form a right angle with each other, and of which the wall section 2h extends up to or at a small distance from the inner side wall section 2c and thus exhibits a distance a from the outer side, while the wall section 2i exhibits a distance b from the end side of the ring projection 2a on the wall section 2d of the cover and in the present embodiment is located at approximately half height of the base part 2. The distance a preferably amounts to approximately 5 mm to 20 mm. A distance a of approximately 12 mm is particularly advantageous with respect to the given room conditions and external dimensions of the lamp 1. The distance b preferably also amounts to at least about 5 mm and has a particularly smaller extent than the height h of the base part 2, so that the base part 2 on the mounting side 4 forms a stable plinth.

The grid 7 is a structure known per se with two opposite reflection side walls 17, which are then symmetrically arranged and designed in relation to a longitudinal center plane E which runs at right angles to the lamp's mounting side 4 and is interconnected by of intermediate transverse and upright grid walls 18, which are connected to the reflection side walls 17 by means of fastening means 19 known per se, and whose height is less than the height of the reflection side walls 17, so that at least one lamp unit 9 can be arranged between the grid walls 18 with mutual distance c and the upper edges of the reflection side walls 17. The grid 7 is preferably positioned against the cover 5 and attached to it. For a ceiling light, it will be sufficient with a position setting preferably in the middle of the cover 5, as the grid 7 can rest against the bottom wall 5a due to the force of gravity. For position adjustment in the middle, inwardly projecting adjustment arms 21 may be arranged which extend to the side walls 5b. The length of such a setting arm 21 is measured to such a size that the screen 7 can be inserted through the narrowed opening 5e in the cover 5 or taken out through it when tilted. The adjustment arms 21 can also be elastically bendable so that both insertion and removal of the screen through the narrowed opening area becomes possible. The grid 7 can also be attached to the cover 5, for example by gluing the lower frame area of the reflection side walls 17 to the bottom wall 5a, where then this edge area can be formed by a lower side wall flange 17a which extends roughly parallel to the bottom wall 5a and a further side wall flange 17b which extends upwards from the outer edge of the first-mentioned flange 17a. The position adjustment arms 21 can then extend from the free edge of the side wall flange 17b up to the associated side wall 5b, where they will then rest against this with a side-directed compressive stress, so that a clamping device is formed for position adjustment of the grid 7 in the cover 5. With such or another fastening device for the grid 7 in the cover 5, the lamp 1 is suitable for a location turned at an angle of approximately 90°, for example on a wall. Fixing of the grid in the cover 5 can take place by assembly in advance, so that the cover 5 and the grid 7 will be assembled together.

The base part 2 preferably consists of a profile section 22 which preferably extends over the majority of its length, as well as end parts 23 arranged as equal and/or mirror images of each other, which are connected by means of connecting devices not shown to the corresponding ends of the profile section 22, for example when using of plug fastening devices in the longitudinal direction of the profile. In the present embodiment, the end part 23 exhibits end part flanges 23a projecting in the direction towards the profile section 22, which are interconnected over an end part length 23b. The connection devices between the end part flange 23a and the profile section 22 are not shown in order to thereby make the manufacture easier. In the area of the end part 23, the cavity 11 and the ring socket 12 extend to the end part section 23b, which can then be made narrower than the end part flanges 23b, as shown in fig. 3.

The construction of the base part 2 from the longitudinal profile section 22 and the end parts 23 is advantageous for several reasons. Firstly, it will then be possible to design the longitudinal section 22 as a profile, possibly by pre-fabrication, for example as an extrusion profile or as an ink profile, which can be rolled or shaped when edged or during a pass through. Thereby, a simple and cost-effective production of the longitudinal section 22 is achieved. This can thus, for example, consist of synthetic material or metal sheet, such as steel sheet or aluminum sheet. In the embodiment shown, the recesses only extend within the longitudinal section 22, which means that these recesses 16 are not present on the end parts 23.

A further advantage consists in the fact that several longitudinal sections 22 can be stacked on top of each other, as shown in fig. 4. When pre-fabricated, several or a greater number of longitudinal sections 22 can thus be stored with little space required and therefore also transported in a favorable manner.

Fig. 5 shows an equally advantageous design alternative for the base part 2 and/or the longitudinal section 22. In this design, the cover wall 2b is connected to the flange section 2e by means of, for example, a vertically extending connecting flange 2j, so that together they form a box shape. However, the inner side wall section 2c is missing, so that in the present embodiment an inner flange 2k extends inwards from the wall section 2h, for example in a U shape.

The stackability is ensured by both of the two profile shapes, as the distance a, taking account of a movement clearance, is made larger than the size of the flange section 2e in the design example according to fig. 2 and 4 or the size e of the upwardly projecting base ring 24. The end part 23 can also in the design example in fig. 5 be designed as previously described.

The bottom wall 5a of the cover 5 consists, at least in the present embodiment, of reflectors 7a which form a grid 7 or over the entire bottom wall area of clear light-permeable material, such as plastic or plastic material. In this way, the lamp 1 in active working function gives a light with a high light density in the direction made clear by the arrow 25 and directed with its main radiation across the bottom wall 5a. The side walls 5b can consist of transparent or translucent (opal) material. In both cases, the lamp 1 with its cover 5 is thus suitable for emitting a side light indicated simply by the arrow 26 and which consists of light rays originating from at least one lamp through the present opening between the upper edges of the reflection side walls 17 and with an extent f up to the space on the upper side of the reflectors 7a and then radiates out from the above free space 27 outwards to the side. A reflection of these light rays from the inside of the cover wall 2b can contribute to this, and the inside is preferably designed as a reflection surface. Hereby, a certain part 26a of the side light is also emitted obliquely upwards through the cover wall section 5e, which then contributes to further illumination of the surroundings on the side of the lamp 1, especially then within the area of the mounting side 4. The side walls 5b also included the bottom wall sections a1 which are located on the upper side of the reflectors 7a as well as the cover wall section 5b can then consist of transparent or translucent (opal) material.

The lamp 1 can also by its radiation be adapted to colored side light 26 and to special requirements and room fittings. The step-shaped ledge, with which the cover 5 is attached to the base part 2, here indicated by the ring spigot wall 12a and/or the cover wall section 5d, can then be colored.

Another design for obtaining colored side light 26, respectively 26a, can then be achieved by arranging a color filter 28 which extends across the side light 26 in the cavity 5e. The color filter 28 can then be formed from a foil of preferably rigid material, which is then arranged at an angle between the upper edge area of the reflection side walls 17 and the corner area of the cavity 11, thereby coloring the side light 26. For form-fitting retention of the color filter 28, it can also be the upper edge of the reflection side walls 17 be arranged a small transverse flange (not shown), which has a connection with the corner area of the cavity 11 ensures a form-fitting retention.

The color of the side light 26, respectively also 26a, can for example be green, blue, yellow or red.

The lamp thus emits directed light 25 downwards as well as side lights 26, respectively 26a, of the same or white colour, possibly colored light in the side direction to thereby illuminate the surroundings and the area on the mounting side.

Claims (12)

1. Lamp (1) with a base part (2) carrying a socket for at least one lamp unit (9) and having a vessel-shaped cover (5) which is connected to the base part (2) by means of detachable fasteners (6), wherein the cover (5) has a connection opening (5e) which is narrowed with respect to its width, towards the edge of which the cover wall section (5d) extends inwards from the side walls (5a), characterized in that: the base part (2) is configured in its area against the cover (5) in such a way that in the assembled state of the cover (5) a recess (16) is formed which is in any case open laterally and which rests against the cover wall sections (5d), as the socket enables light emission also over the cover wall sections (5d). 2. Lamp as stated in claim 1, characterized in that the lamp (1) between the base part (2) and the bottom wall (5a) of the cover (5) has a grid (7) and in that the bottom wall (5a) is clearly transparent at least in the area of the grid (7). 3. Lamp as stated in claim 1, characterized in that the grid (7) is positioned or fixed in the cover (5). 4. Lamp as stated in claim 2 or 3, characterized in that the grid (7) rests against the bottom wall (5a). 5. Lamp as stated in claim 3 or 4, characterized in that the grid (7) is positioned in relation to or attached to the bottom wall (5a) or the side walls (5b) of the cover (5). 6. Lamp as stated in the previous requirements, characterized in that the side walls (5b) of the cover (5) are clear, transparent or translucent (opale). 7. Lamp as stated in the previous requirements, characterized in that the preferably flat side walls (5b) of the cover (5) are converging in a direction away from the bottom wall (5a) 8. Lamp as stated in the previous requirements, characterized in that the lamp (1) is an elongated lamp. 9. Lamp as stated in the previous requirements, characterized in that the base part (2) consists of a longitudinal section (22) and two end parts (23) arranged at each outer end of the longitudinal section (22). 10. Lamp as stated in the previous requirements, characterized in that the recesses (16) extend over the total length or end at a distance from the outer ends or only extend over the length section (22). 11. Base part (2) for a lamp (1), in particular in accordance with one of the preceding claims, and with fastening means (3) arranged on one side of the base part (2) for attachment to a mounting surface (4) of a lamp carrier and on its opposite side fastening means (6) arranged for releasably attaching a cover (5) for at least one lamp unit (9), characterized in that the base part (2) has a longitudinal section (22) and end parts (23) arranged on each other opposite side of the longitudinal section (22), and that the longitudinal section (22) has recesses (16) on its longitudinal sides which extend between the end parts (23), the recesses on the side of the base part (2) to which the cover (5) can be attached, are open, through which the emission of light is possible. 12. Lamp or base part as specified in requirements 9 to 11, characterized in that the longitudinal section (22) consists of a profile section.