FR2466113A3 - ELECTRIC BULB MOUNT - Google Patents

Abstract

BULB MOUNT FOR TABLE, BEDSIDE, READING, FLOOR LAMP OR SIMILAR LAMP. IT INCLUDES, IN COMBINATION, A SOCKET 23 FOR A BULB AND DRIVE MEANS FOR CONTROLLING THE QUANTITY OF LIGHT EMITTED BY THE BULB DURING USE.

Description

The invention relates to light bulb mounts.

  only for reading or bedside table lamps,

floor lamps or the like.

  It is known to provide a lighting dimmer in a wall switch controlling chandeliers or sconces so that it is possible to vary the intensity of their lighting as required. There is a similar, and perhaps more important, need to vary the intensity

  lighting for individual or portable individual lamps

  tives present in a room; this is a goal of this

invention to satisfy this need.

  The bulb mount according to the invention, intended for bedside, reading or similar lamps, is characterized in that it comprises in combination a socket for receiving a bulb and a dimmer. The mount can be routinely attached to the lamp base, and the socket is normally of a conventional bayonet or screw type, any means of holding the bulb

  being covered by the term socket.

  Preferably, the frame according to the invention also comprises a switch and it is practical for this to be

operated by the same control as the drive.

  The invention will be clearly understood on reading the

description which follows given as an example of forms of

realization and in view of the drawing in which:

- Figure 1 is a plan view of a mounting frame

hen according to the invention; - Figure 2 is a plan view of another embodiment of the frame according to the invention;

  - Figure 3 is a plan view showing the components

  sants mounted on a printed circuit board and housed in the mount shown in Figure 1 or Figure 2; - Figure 4 is a side view of the card of Figure 3; and

- Figure 5 is an electrical circuit diagram.

The lamp holder 10 shown in Figure 1

includes a lower part 12 of bulb holder suitable

  tional modified so as to be able to be connected by a threaded ring 14 to a sleeve 16 threaded at its ends and housing a variator. The upper part of the sleeve 16 is connected

  by means of another threaded ring 18 to a socket 20 of am-

bayonet type hen, which is a modified part above

  of a conventional bulb holder. Sleeve 16

  has an opening 22 for a control button which is not

  present. The bulb holder 23 shown in FIG. 2 comprises a lower boot part 24 which is internally threaded at 26 so that it can be screwed onto a rod (not shown), and an upper boot part 28 fixed to the lower part 24 by a threaded ring 30 and

  a bayonet type socket 32 by a threaded ring 34.

A control box 36 protrudes from the bottom

24 through an opening.

  Figures 3 and 4 show the arrangement of a dimmer circuit which is housed in the body of the bulb holder 10, 23 and which allows the variation by phase control of the waveform of the alternating current of the network. The components of the dimmer circuit suitable for bulbs of 40 to 150 watts are arranged on a card

printed circuits 38 and are identified by the following references

  as in Figures 3 and 5: R1 - 680 K.ohms Resistance -25 R2 - 6.8 K.ohms "R3 - 220 ohms" VR1 - 470 K.ohms Resistance with linear variation (associated and (controlled by VR2 - 1 M .ohms "" "(button 36 Ci - 022" uF Capacity

C2 - 1 BF

  Dl - DIAC Tl - TRIAC Ll - Inductance (350turning wire 29g wound on an iron core) SI - Switch of the supply current with double pole, controlled by the button 36 Tl - terminal The circuit described above not only removes

  radio interference and complies with BS 5518 vi-

lighting dimmers, but still its compactness allows it to be incorporated into a bulb holder which is not

  than a little larger than a conventional bulb holder-

nel and which is thus not unpleasant to the sight.

4 '-

4- 42466113

  IRLVIVNDl. (, I'IONS 1. Bulb mount for bedside table lamp, reading lamp, floor lamp or the like, characterized in that it comprises, in combination, a socket for a bulb and control means for controlling in use the

  amount of light emitted by the bulb.

2. Frame according to claim 1, characterized in

  what the socket is of the screw type.

  3. Frame according to claim 1 or the claim

  tion 2, characterized in that it further comprises a

on-off switch.

4. Frame according to claim 3., characterized in that the switch can be actuated manually by the

  same adjustment means as said control means.

5. Frame according to any one of the claims

  above, characterized in that the control means are adapted to continuously control the quantity of light

emitted by the bulb.

6. Frame according to claim 5, characterized in

  that the control means include a supply circuit

suitable for acting on the waveform of a current of

alternative network.

  7. Lamp characterized in that it comprises a mon-

  ture according to any one of the preceding CLAIMS.