FIELD OF THE INVENTION
The present invention relates to movable arm mounted lighting system on
lighting poles. More particularly, the present invention is directed to provide
movable arms on which the light fitting is mounted installed on poles instead of
conventional fixed arm based light fittings, to favour maintenance and/or
replacement of lamps etc from ground level at less time and with less
manpower. These movable arms are located at the top most level of the light
poles. Light fittings which are fixed usually at a height of 8mts can be brought to
ground level (without detaching) for maintenance purposes without the use of
any external equipment in a safer, faster, simple and reliable manner.
BACKGROUND OF THE INVENTION
Traditionally the street light or garden light poles'used are made of rail poles,
hollow poles, wooden poles or flat cement poles. Flats or hollow pipes are fixed
at the top most level of the light poles and the light fittings are mounted on the
ends of the flats or hollow pipes also known as cross structures.
The traditional street light or garden light poles are fixed ones. Due to this
maintenance of these light fitting require:-
1) Ladder or Trolley for approaching the light fittings.
.2) Man power and time required for transportation of ladder / trolley is
high.
3) Working at a height nearly same as that of pole is unsafe and accident
prone and thus requires additional safety measures.
4) In view of time consumed in attending to complaint of one pole, jobs
on the other poles were getting delayed, resulting in increase in
numbers of complaints.
5) Since inception of the pole, till date no development has taken place
regarding fixing/replacing the lamps /lights at the cross structures.

There has been therefore a persistent need in the art of developing appropriate
arms and fittings for mounting of light at the top of lighting poles suitable for
lighting of street, garden, urban housing schemes or large industry where such
poles are installed in large , numbers and require frequent maintenance
/replacements and thus needing a substantial manpower and lot of time for such
jobs, to favour a easy and quick maintenance work with less manpower in a safe
manner whereby the maintenance person can carry out work.at the ground
level.
OBJECTS OF THE INVENTION
The basic object of the present invention is thus directed to provide movable
cross arm mounted pole lighting system which avoid the problems and
limitations of the prior art ensuring safe and simple. working procedure for
maintenance personnel.
A further object of the present invention is directed to provide movable arm
mounted pole lighting system for installation in street/garden lighting wherein
unlike the conventional fixed arm, movable arms are mounted at the top of the
pole, which hold the lamps, which can be brought down to ground level for
maintenance work as and when necessary.
A still further object of the present invention is thus directed to provide movable
arm mounted pole lighting system wherein the movable, arms can be brought
down to ground level by means of operating a lever(connected to the arms) at
ground level.
A still further object of the present invention is thus directed to provide movable
arm based pole mounted lighting system wherein since the lamp
mounting/replacement or other related maintenance work can be carried out by

operators at the ground level, the hazards of working at heights are totally
eliminated.
A still further object of the present invention is thus directed to provide movable
arm based pole mounted lighting system which avoid use/handling of long ladder
etc, requirement of manpower is reduced and the job can be completed at less
time as it is-done at ground level in much safe and simpler way.
A still further object of the present invention is thus directed to provide movable
arm based pole mounted lighting system.wherein after the maintenance work is
completed, the movable cross arm can be raised back to the normal height from
ground level.
A still further object of the present invention is thus directed to provide movable
arm based pole mounted lighting system wherein as the total time duration for
maintenance is lower than the conventional one, hence more numbers of such
poles can be attended during a given time period.
SUMMARY OF THE INVENTION
The basic aspect of the present invention is directed to movable arm mounted
lighting system to facilitate installation and maintenance of the light fittings from
ground level comprising:
a pole vertically erected on ground supporting at least one movable cross
arm with said light fittings at its outer end away from the pole at the top
and having a near inner end close to the pole;
said movable cross arm mounted movably with respect to a guide
bracket secured to said pole to enable an installed locked upward
disposition and unlocked downward swing motion with respect to said
guide bracket for a maintenance purpose downward disposition;

said guide bracket including a support fulcrum for said movable cross
arm with its near end close to the said fulcrum and its far end having said
light fittings away from the fulcrum enabling gravity based unlocked
downward swing motion with respect to said fulcrum for a maintenance
purpose downward disposition from its locke'd installed upward
disposition.
a lockable cooperating lever arrangement disposed with respect to said
pole and operatively connected to said movable cross arm for said
installed locked upward disposition and unlocked downward swing
motion with respect to said guide bracket for a maintenance purpose
downward disposition.
A further aspect of the present invention is directed to the said movable arm
mounted lighting system comprising
a hollow tubular pole vertically erected on ground;
at least one movable cross arm" extending outward from upper part of
pole holding light/lamp at outer end;
said movable cross arm mounted movably on fulcrum support located in
a guide bracket at upper level of pole to enable up and down swing
motion of arm in a vertical plane;
a system of levers inbuilt in the hollow pole at a lower level of pole
operatively connected with the said movable cross arm through a sling
rope such that by operating said lever by applying force manually, said
outer end of arm with light fitting can be raised to desired height and
inclination at top of pole to attain said installed locked upward disposition
and on reverse operation of said lever enabling swinging down the
movable cross arm to ground level for maintenance work to attain said
maintenance purpose downward disposition when needed and after the
maintenance work is carried out on the light fittings, the cross arms can
be raised back to the said installed locked upward disposition;

Electrical Control Gear unit for the light fittings is mounted inside a box
fixed at ground level near the pole to distribute power to its equipment
and including short circuit protection.
A still further aspect of the present invention is directed to movable arm
mounted lighting system, comprising a pair of said movable arms or a multi-arm
system.
Yet another aspect of the present invention is directed to said movable arm
mounted lighting system, comprising a hollow tubular pole adapted to block any
entry of rain water inside the hollow pole and also having decorative aesthetic
appeal with or without means for additional decorative fitment attachment with
respect to said pole .
A further aspect of the present invention is directed to a movable arm mounted
lighting system-wherein said lever based locking and unlocking arrangement is
provided with safe and authentic operative keying arrangement.
A still further aspect of the present invention is directed to a movable arm
mounted lighting system wherein said guide bracket comprising guide plates for
providing support and guidance of the arm movement so as. to guide the
movable arm to move in a particular direction and support the arm and keep it
at the desired height and angle.
Another aspect of the present invention is directed to a movable arm mounted
pole lighting system wherein said arm guide plates are comprised of stopper
and holder for restricting the movement of arm within a desired limit.
A further aspect of the present invention is directed to a movable arm mounted
pole lighting system wherein an operating control gear box is provided to guide
the operating lever to move the movable arm to a desired height with heip of
slipg rope attachment.

A still further aspect of the present invention is directed to a movable.arm
mounted pole lighting system wherein said operating, lever can be exte.nded by
additional rod arrangement, so that force can be easily applied for movement of
arms.
A still further aspect of the present invention is directed to a movable arm
mounted pole lighting system wherein said movable cross arms can swing
corresponding to longitudinal displacement of sling rope attached to said lever
arrangement and said lighting height and angle can be adjusted as per
requirement to achieve preferably a desired illumination of 650. lux and to
provide uniform lighting in the pole surrounding.
The objects and advantages of the present invention are described hereunder in
greater details with reference to the following accompanying non limiting
illustrative drawings.
BRIEF DESCRIPTION OF THE ACCOMPANYING FIGURES
Figurel: show the fixed arm based conventional arrangement for street lighting
pole.
Figure 2: shows the schematic view of the operating lever.arrangement and sling
attachment with movable arm for the movable cross arm based pole lighting
system according to the present invention.
Figure 3: shows the down ward movement of the arm during operation and
maintenance time effected by operating the lever.
Figure 4: is a photographic image showing the aesthetic look of the human face
mask provided on the invented pole.
Figure 5: is a photographic image showing a close up night view of the human
face mask.
Figure 6: shows schematically the locking system of operating lever provided at
the bottom of pole.

Figure 7: shows the schematic view of lever and arm position during
maintenance.
DETAILED DESCRIPTION OF THE INVENTION WITH REFERENCE TO THE
ACCOMPANYING FIGURES
The present invention is directed to provide movable cross arm mounted pole
lighting system for installation in street/garden lighting wherein unlike the
conventional fixed arm, movable arms are mounted at the top of the pole for
holding the lamps, which can be brought down to ground level by operating a
lever mounted at bottom of pole, for maintenance work as and when necessary.
The movable arm based pole mounted lighting system according to the present
invention consists of assembly of following components:
(i) a hollow pole,
(ii) cross arms (on which the lights are fitted) fixed in such a
manner such that these cross arms become movable instead of the normally
fixed one,
(Mi) a system of levers inbuilt in the hollow pole for swinging,
down the movable cross arm and
(iv) electrical control gear for the light fittings mounted in a
cabinet besides the hollow pole.
After the maintenance work is carried out on the light fittings, the cross arms
can be raised back to the normal height.
Accordingly movable cross arm based pole lighting system of this invention
helps in bringing down the light fitting to the ground level for maintenance &
after maintenance to take it back to its original position without the use of
any ladder or trolley.

Accompanying Figure 1 shows the fixed arm based conventional arrangement
for street lighting pole. As already stated, the maintenance persons has to ride
on ladder to approach the light mounted on the fixed arm at top of pole which
require more time and manpower and involves hazards of unsafe working at
high altitude.
Accompanying Figures. 2 and 3 provides two views of the movable arm
arrangement of the pole mounted lighting system according to the present
invention which includes all the necessary arrangement required for movement
of the arms including the operating lever arrangement and sling attachment with
movable arm for the movable cross arm based pole lighting system according to
the present invention.
In accompanying Figure 3 some of the details of the sling connection of lever
and movable arm and guide bracket to mount the movable arm are shown. To
avoid rain water entering the pole and adversely affecting the lever mechanism,
a top cover plate is fixed on top of the pole as shown in Figure 3.
It is thus possible by way of the present invention to provide a movable arm
based pole lighting system which comprise of the following constructional
features:
In a preferred embodiment of movable arm based pole lighting system according
to the present invention as shown in accompanying Figure 2 , a hollow tubular
pole(P) of about 150mm dia is erected on ground with grouting and is about 6
meters high from ground level. It has two guide brackets(G) attached to two
diametric opposite sides. There are two metal tube made cross arms(A) suitably
bent to hold the light fittings/lamp at the outer end and a fulcrum support(F) to
hold the arms at the other end adjacent to the pole within the guide bracket with
bolt connection such that the arm can swing against fulcrum support to move
the lighting(L) up or down in a vertical plane. The Arm guide plate/bracket
provide support and guidance of the arm movement. An Operating lever(L)

assembly is to help the pole arm to be lifted up and down through the attached
sling rope(S). The lever(L) is mounted with operating lever control gear box(CG)
with fulcrum support such that the lever can be operated up or down against the
fulcrum by applying force with hand at the outer end and the sling rope attached
to the lever at lower end and with cross arm at the upper end enable swinging
movement of the cross arm with the light fittings. There are two sets of lever
assembly to operate two cross arms independently. The arm guide plate(G) is
used to guide the movable arm to move in a particular direction and support the
arm and keep it at the desired height and angle. Operating control gear box(CG)
is used to guide the operating lever to move the movable arm to a desire height
with help of sling rope attachment. The arm guide plate consist of (stopper &
holder) for restricting the movement of arm within a limit. By operating the lever
from ground level, the top of movable arm can be raised to a height of 8meters
and can be brought down to a height of 2.286meters from base of pole.
In the arrangement shown in Figure 2 & 3, the operating lever is attached with
sling rope with the pole arm, so that operating lever can be operated from
ground level to move the pole arm to required height for operation/lighting and
can also be operated to move down near ground level for maintenance.
Importantly also, the operating lever can be extended by additional rod
arrangement, so that force can be easily applied to move arms. Pole arm will
swing with longitudinal displacement of sling rope of 215mm distance. Bushes
are placed in the sling rope end connections for easy movement of pole arm.
As a precautionary measure both the operating levers are not to be operated at
same time but should be'operated one after another. Also, for sage operation,
no person should stand under the light fitting arm during sliding/lowering of
lights. All the light maintenance and glowing is to be checked at ground level
before taking it to a height. After completion of maintenance work, pole cover is
to be locked and main switch to be made On. At least 2 persons should be
available for maintenance work when necessary.

There is a flange fixed on top of the pole to protect ingress of rain water and
which can also be used for fixing additional items. According to an embodiment,
one human mask is fixed to this.flange to increase the aesthetic look of the pole.
An Electrical Control gear box(EC) is mounted near the bottom part of pole to
distribute power to its equipment provide short circuit protection. One earthing is
connected to the pole with bolt connection to take care of short circuit and
human safety.
To add to the aesthetic look of the pole as an optional feature, a human face
mask has been created out of scrap iron pieces and fixed on the top'flange of
the pole as shown in accompanying Figure 4. A focused lighting has been
arranged to create a beautiful glowing .night view of the mask as shown in
Figure 5, giving the impression of a human being holding two lights in his
outstretched arms.
Electrical Control gear(EG) units for the light fittings are mounted inside a box
fixed at ground level near the pole. A locking arrangement(LC) has been
incorporated to prevent mal-bperation of the operating handle is shown in
Figure .6. The operating arrangement for maintenance of the movable arm
lighting system with arms in brought down position have been shown in the
Figure 7. All the stated arrangements are made with in-house recoverable scrap
material.
Following advantageous features can thus be achieved by way of the present
invention:
1) By this invention pole arm can be lifted easily with the help of operation lever
which is extendable. Drastic reduction of utilization of manpower and
maintenance cost is achieved by this arrangement. Street lighting is done
without needing any trolley or ladder and safety aspects are ensured. Estimated

annual saving under labour head 67%. Any reduction in man power and.
maintenance helps in improving the bottom -line of the company.
2) By using simple method of pole arm lifting arrangement, break down on
account.of motor/ gear box had been completely eliminated.
3). Street light maintenance time has been reduced because immediate
maintenance is possible without any trolley or ladder.
4) Utilization of maintenance area is reduced because no trolley or ladder is
used.
5) There is no need for climbing to a height for maintenance work - as a result
fatal accidents are avoided.
6) Lighting height and angle can be adjusted as per requirement.
.7) Desired illumination of 650 lux is achieved and uniform lighting is provided in
the pole surrounding.
8) Use of LED light increases the life of lighting system and reduces maintenance .
cost. Other type of lights can be used as per requirement.
9) The pole weight and structure is less, which reduces pole grouting and other
costs of the pole.
10) Although a. cylindrical pole has been used for this structure as shown, if
required any type of hollow pole can also be used.
11) Although, the embodiment shown involved a two-arm pole structure. The
same principle can be applied for a mu'lti arm system (4arm pole etc) also with
some modifications.
12) The basic concept of using the arm lighting system is that it eliminates
transportation of ladder/trolley and minimum man power is required for
maintenance as a result maximum amount of complaints can be attended to
within minimum time with less man power and it saves cost under labour head
by about 67%. This type of technology involving movable arms has never been
used in the lighting systems earlier and can be advantageously applied in
following areas:
(i) STREET LIGHTING.
(ii) PUMP HOUSES.
(iii) OUT DOOR STADIUM.

(iv) INSIDE THE SHOP FLOOR.
(v) LARGE PROJECT AREA.
(vi) GUARDEN AREA LIGHTING.
(vii) RURAL AREA LIGHTING.
(viii) BOUNDARY AREA OF ANY BUILDING / INDUSTRY.

We Claim:
1. Movable arm mounted lighting system to facilitate installation and
maintenance of the light fittings from ground level comprising:
a pole vertically erected on ground supporting at least one movable cross
arm with said light fittings at its outer end away from the pole at the top
and having a near inner end close to the pole;
said movable cross arm mounted movably with respect to a guide
bracket secured to said pole to enable an installed locked upward
disposition . and unlocked downward swing motion with respect to said
guide bracket for a maintenance purpose downward disposition;
said guide bracket including a support fulcrum for said movable cross
arm with its near end close to the said fulcrum and its far end having said
light fittings away from the fulcrum enabling gravity based unlocked
downward swing motion with respect to said fulcrum for a maintenance
purpose downward disposition from its locked installed upward
disposition.
a lockable cooperating lever arrangement disposed with respect to said
pole and operatively connected to said movable cross arm for said'
installed locked upward disposition and unlocked downward swing
motion with respect to said guide bracket for a maintenance purpose
downward disposition.
2. Movable arm mounted lighting system as claimed in claim 1 comprising
a hollow tubular pole vertically erected on ground;
at least, one movable cross arm extending outward from upper part of
pole holding light/lamp at outer end;
said movable cross arm mounted movably on.fulcrum support located in
a guide bracket at upper level of pole to enable up and down swing
motion of arm in a vertical plane;

a system of levers inbuilt in the hollow pole at a lower level of pole
operatively connected with the said movable cross arm through a sling
rope such that by operating said lever.by applying force manually, said
outer end of arm with light fitting can be raised to desired height and .
inclination at top of pole to attain said installed locked upward disposition
and on reverse operation of said lever enabling swinging down the
movable cross arm to ground level for maintenance work to attain said
maintenance purpose downward disposition when needed and after the
maintenance work is carried out on the light fittings, the cross arms can
be raised back to the said installed locked upward disposition;
Electrical Control Gear unit for the light fittings mounted inside a box
fixed at ground level near the pole to distribute power to its equipment
and including short circuit protection.
3. Movable arm mounted lighting system as claimed in anyone of claims 1 or 2 ,
comprising a pair of said movable arms or a multiarm system.
4. Movable arm mounted lighting system as claimed in anyone of claims 1 to 3 ,
comprising a hollow tubular pole adapted to block any entry of rain water inside
the hollow pole and also having decorative aesthetic appeal with or without
means for additional decorative fitment attachment with respect to said pole .
5. Movable arm mounted lighting system as claimed in anyone of claims 1 to 3,
wherein said lever based locking and. unlocking arrangement is provided with
safe and authentic operative keying arrangement.
6. Movable arm mounted lighting system as claimed in anyone of claims 1 to 5,
wherein said guide bracket comprising guide plates for providing support and
guidance of the arm movement so as to guide the movable arm to move in a
particular direction and support the arm and keep it at the desired height and
angle.

7. Movable arm mounted pole lighting system as claimed in anyone of claims 1
to 6, wherein said arm guide plates comprising of stopper and holder for
restricting the movement of arm with-in a desired limit.
8. Movable arm mounted pole lighting system as claimed in anyone of claims 1
to 7, wherein an operating control gear box is provided to guide the operating
lever to move the movable arm to a desired height with help of sling rope
attachment.
9. Movable arm mounted pole lighting system as claimed in anyone of claims 1
to 8, wherein said operating lever can be extended by additional rod
arrangement, so that force can be easily applied for movement of arms.
10. Movable arm mounted pole lighting system as claimed in anyone of claims 1
to 9, wherein said movable cross arms can swing corresponding to longitudinal
displacement of sling rope attached to said lever arrangement and said lighting
height and angle can be adjusted as per requirement to achieve preferably a
desired illumination of 650 lux and to provide uniform lighting in the pole
surrounding.

ABSTRACT

The present invention relates to movable arm mounted lighting system using .
movable arm system movably fixed on pole, so that no trolley or ladder will be
required for maintenance work. Movable cross arms are attached with sling
ropes to pull the arms upward for certain height and downward for maintenance
by operation of lever at ground level. The pole arm arrangement comprises a
arm guide for providing support and guidance of pole arm for easy movement.
The arm can be rotated up to a certain angle for top to bottom movement with
longitudinal displacement of sling rope. Operating levers are attached to pole
arm at the ground level through sling, so that operation can be done from
ground level with provision for locking. Maintenance of light/fittings can be done
immediately with minimum man power and minimum time without requirement
of any ladder, thus saving, maintenance cost by about 67%.