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Products   >   LED Based Torch Light cum Flashing Hand Signal Lamp
LED BASED TORCH LIGHT CUM FLASHING HAND SIGNAL LAMP
 
FLASHING HAND SIGNAL LAMP as per specification no. 2002/TR/281/HSL (Rev.0)

This is used for signaling purpose between Driver and Guard.
 
FEATURES:
 
  • The hand signal lamp is compatible to work with R-20 type dry cell batteries and LR-20 HP-2 size D batteries

  • Each switch position withstand minimum 100000 transition operations.

  • The hand signal lamp is compatible to work with R-20 type dry cell batteries and LR-20 HP-2 size D batteries

  • Each switch position withstand minimum 100000 transition operations.

  • Light from the lamp in colour aspects is visible and discernable from a distance of 1.0 Km, along the longitudinal axis and from 100 meters distance at six degrees angular displacement from longitudinal axis.

  • Red and Green aspects shall be quasi static i.e with 220 to 270 pulses per minute and only one of the aspect of either Red and Green shall be possible at any one time.

  • The external appearance of all modules of the lamp is of BLACK colour.

  • The switches, connectors, PCB and electronic components used is of Industrial grade and as per relevant Indian Standard Speification.

    • The lamp shall have three modules i.e
      a. White light module
      b. Battery module
      c. Electronic assembly module

  • The weight of the complete lamp is less than 600 gms, excluding weight of batteries

  • The minimum junction temperature of a LED is not less than 100 deg.

  • One pilot amber LED, 3.0 mm is provided at the top surface of the central module to indicate that the hand signal lamp is in perfect fettle and is working, and shall turn on only when the lamp is switched on.

ADVANTAGES:

  • It is lightweight, rugged, maintainable and user-friendly Battery operated LED Based Torch Light cum – Hand Signal Lamp.

  • The flashing hand signal lamp unit have the highest reliability under severe environmental conditions of operation i.e dust, humidity, high ambient temperature, shocks and vibrations.

  • The LEDs used in the LED based hand signal lamps shall have insulation resistance of more than 100-M obms.

FLASHING HAND SIGNAL LAMP as per specification no. RDSO/SPN/195/2008 Revision 2.0

As per the new specification the following are the important clauses amended:

1. Operating Parameters :

  • Performance parameters:
    In white light mode, the Hand Signal Lamp shall function as a normal 4 cell torch to IS: 2083.

  • Other parameters:

    Dia of beam            :    7.0 Cms (min) at exit of beam from lamp
    Type of reflector     :     Parabolic, with 6v lamp at its focus
    Spread of beam     :     Max.30cms at 2.0m distance, as per clause 8.9 of IS 2083: 1991
    Rated Voltage        :     6 Volts
    Max.Wattage           :    1.2 Watts (with new batteries)
    Operating Voltage :     6 to 3 Volts
    Low battery cut off  :    2.5 Volts
    Illumination (min.) measured at 1.5 m in axial    :     Normal mode -20 Lux Direction ( in Lux) n operating voltage range. High Intensity mod – 40 Lux.

2. The LED based colour display shall meet the under – mentioned working parameters.

Parameter

Quasi-static Green Aspect

Quasi- static Red Aspect

Rated Voltage (Volts)

6

6

No.of pulses per minute

220 to 270

220 to 270

Max.wattage drawn with new batteries

0.25 W

0.5W

Operating Voltage Range (Volts)

6 to 2.5

6 to 2.5

Illumination (min.) at 1.5m measured in axial direction (in Lux) in operating voltage range

50

20

Radiating area (Maximum)

125 sq.mm

200 sq.mm

Dispersion Angle (as per Annexure III)

5˚ to 8˚



3. Cell Life Requirement :

For white light mode :

Cell life (min.) on continuous discharge basis

With LR-20 Cells

Normal mode

180 hrs.

High intensity mode

90 hrs.

With R-20 cells

Normal mode

40 hrs.

High intensity mode

20 hrs.




For LED based colour displays:

Parameter

Quasi-static Green Aspect

Quasi- static Red Aspect

Individual life on continuous discharge basis

With LR-20 Cells   

600 hrs.

600 hrs.

 

With R-20 cells

150 hrs.

150 hrs.

Min.operating battery life between low battery audio and visual indicator (LBI) and low battery cut off (LBC)

 

12 hrs.

12 hrs.

Min.operating life of RED aspect afer LBC of GREEN aspect

-

4 hrs.


The LED type battery operated hand signal lamp shall meet the under- mentioned Cell Life requirement parameters.

4. Under Design Criteria:

The Multi membrane group switch is also acceptable in which each switch can be independently pressed to switch-ON and switch-OFF for a particular operation as against through complete rotary sequence for changing the position from one end to another end as in the case of rotary type switches.

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