GB2106232A - Strip light fitting - Google Patents

Abstract

A strip light fitting has a movable reflector so that the position of the beam of light emitted from the bulb can be varied. <IMAGE>

Description

SPECIFICATION Light fitting The present invention relates to light fittings and particularly to light fittings with reflectors.

Strip light fittings used for illuminating pictures are frequently provided with an adjustable joint in the bracket so that the light beam can be at an optimum angle with respect to the picture's surface. This angle can be quite critical if the picture is to be illuminated to the best advantage and to avoid reflection from the surface of the picture. It is desirable to make the light fitting for such a use as inconspicuous as possible. Known light fittings for this purpose frequently have unsightly and prominent locking knobs on the adjustable joints.

According to the present invention a strip light fitting comprises a casing, a light bulb socket in the casing enabled to receive a strip light bulb, a reflector mounted to the casing and means to move the reflector relative to the socket and about an axis parallel to the bulb so as to vary the angle of the light beam emitted from the strip light bulb.

Preferably the reflector is partly rotatable about the bulb axis and is movable by a manual actuatable member extending from the exterior of the casing.

In a preferred embodiment the bulb has sockets at each end and the reflector is supported by both sockets.

An embodiment of the invention will now be described by way of example with reference to the drawings in which: Figure 1 is a perspective view of a light fitting according to the invention, Figure 2 is an axial view of one bulb socket of the fitting of Fig. 1, Figure 3 is an axial view of the other bulb socket of the fitting of Fig. 1, and Figure 4 is an axial cross-sectional view taken along the line A-A of Fig. 1 but showing only the features in that line.

In Figure 1 there is shown a strip light fitting 1 specifically designed for illuminating pictures but also useful for such purposes as desk illumination.

The fitting 1 has a casing 2, a socket 3 at one end of an elongate strip light bulb 5 shown in broken lines and a further socket 6 at the other end of the bulb. The bulb has an axis 7 and the sockets are aligned in the socket axis. The casing has an opening 8 behind which the bulb 5 is mounted and through which the light beam from the bulb issues. Behind the bulb and within the casing is a reflector 10 which extends between the sockets and which is partly arcuate in cross section as may be seen easier in Figs. 2 to 4. The fitting is supported by an arm 12 which is tubular and fits onto a bracket 13.

In Figs. 2 and 3 it will be seen that the reflector 10 is fixed to each socket by a "C" shaped member 14 each of which has reflector engaging protrusions 1 5. Member 14 is enabled to swivel partly about axis 7 by being freely mounted on body portions 1 7 and 18 of sockets 3 and 6 respectively.

To control the movement of reflector 10 about axis 7 a manually actuatable member 20 which is slidable along a path 19 mounted on a slot 21 in the rear of casing 2. Member 20 has an internal reflector engaging portion 22. Portion 22 engages in an aperture 24 in the reflector 10 so that when member 20 is pushed upward in path direction 1 9 (see Fig. 4) the reflector pivoted about axis 7 moves in direction 26.

The movement of member 20 enables reflector to move through a limited arc but this is sufficient for the fine degree of control over the light beam direction. The arrangement is neat, easy to operate, is not unsightly and economic to produce.

1. A strip light fitting comprising a casing, a light bulb socket in the casing to receive a strip light bulb, a reflector positioned partly to surround the position occupied by a light bulb mounted in the socket, and means to move the reflector in an arc around the socket about an axis parallel to the bulb so as to vary the position of the light beam emitted from a strip light bulb in the casing.

2. A fitting as claimed in Claim 1 in which the reflector is partly rotatable about the bulb axis and is movable by a manually actuable member accessible from the exterior of the casing.

3. A tubular light fitting substantially as hereinbefore described with reference to the accompanying drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (3)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Light fitting The present invention relates to light fittings and particularly to light fittings with reflectors. Strip light fittings used for illuminating pictures are frequently provided with an adjustable joint in the bracket so that the light beam can be at an optimum angle with respect to the picture's surface. This angle can be quite critical if the picture is to be illuminated to the best advantage and to avoid reflection from the surface of the picture. It is desirable to make the light fitting for such a use as inconspicuous as possible. Known light fittings for this purpose frequently have unsightly and prominent locking knobs on the adjustable joints. According to the present invention a strip light fitting comprises a casing, a light bulb socket in the casing enabled to receive a strip light bulb, a reflector mounted to the casing and means to move the reflector relative to the socket and about an axis parallel to the bulb so as to vary the angle of the light beam emitted from the strip light bulb. Preferably the reflector is partly rotatable about the bulb axis and is movable by a manual actuatable member extending from the exterior of the casing. In a preferred embodiment the bulb has sockets at each end and the reflector is supported by both sockets. An embodiment of the invention will now be described by way of example with reference to the drawings in which: Figure 1 is a perspective view of a light fitting according to the invention, Figure 2 is an axial view of one bulb socket of the fitting of Fig. 1, Figure 3 is an axial view of the other bulb socket of the fitting of Fig. 1, and Figure 4 is an axial cross-sectional view taken along the line A-A of Fig. 1 but showing only the features in that line. In Figure 1 there is shown a strip light fitting 1 specifically designed for illuminating pictures but also useful for such purposes as desk illumination. The fitting 1 has a casing 2, a socket 3 at one end of an elongate strip light bulb 5 shown in broken lines and a further socket 6 at the other end of the bulb. The bulb has an axis 7 and the sockets are aligned in the socket axis. The casing has an opening 8 behind which the bulb 5 is mounted and through which the light beam from the bulb issues. Behind the bulb and within the casing is a reflector 10 which extends between the sockets and which is partly arcuate in cross section as may be seen easier in Figs. 2 to 4. The fitting is supported by an arm 12 which is tubular and fits onto a bracket 13. In Figs. 2 and 3 it will be seen that the reflector 10 is fixed to each socket by a "C" shaped member 14 each of which has reflector engaging protrusions 1 5. Member 14 is enabled to swivel partly about axis 7 by being freely mounted on body portions 1 7 and 18 of sockets 3 and 6 respectively. To control the movement of reflector 10 about axis 7 a manually actuatable member 20 which is slidable along a path 19 mounted on a slot 21 in the rear of casing 2. Member 20 has an internal reflector engaging portion 22. Portion 22 engages in an aperture 24 in the reflector 10 so that when member 20 is pushed upward in path direction 1 9 (see Fig. 4) the reflector pivoted about axis 7 moves in direction 26. The movement of member 20 enables reflector to move through a limited arc but this is sufficient for the fine degree of control over the light beam direction. The arrangement is neat, easy to operate, is not unsightly and economic to produce. CLAIMS

1. A strip light fitting comprising a casing, a light bulb socket in the casing to receive a strip light bulb, a reflector positioned partly to surround the position occupied by a light bulb mounted in the socket, and means to move the reflector in an arc around the socket about an axis parallel to the bulb so as to vary the position of the light beam emitted from a strip light bulb in the casing.

2. A fitting as claimed in Claim 1 in which the reflector is partly rotatable about the bulb axis and is movable by a manually actuable member accessible from the exterior of the casing.

3. A tubular light fitting substantially as hereinbefore described with reference to the accompanying drawings.