BACKGROUND OF THE INVENTION
The present invention relates to an illumination device incorporated into a wrist watch that would also serve as a flash light. The illumination device makes use of a Light Emitting Diode and an electronic circuitry, including a battery that is required for the Light Emitting Diode to be energized at the press of a button. The position of Light Emitting Diode on the dial face not only facilitates reading time under inadequate lighting conditions but also acts as a flash light to perform such tasks as finding way in the dark, searching for key hole, looking for fallen objects like keys, etc.
PRIOR ART
Wristwatches with various types of illumination methods have been proposed to enable illumination of the watch face for reading time under scanty lighting conditions. Most of these methods involve the use of an electroluminescent sheet on the dial face (US 2004/0156270, US 5764599, US 4775964) that lights up at the press of a button provided on the case. While wrist watches fitted with an electroluminescent sheet enabled reading time in the dark, they had very low illumination levels and hence could not be used as a flash light.
The "combination wrist watch and flashlight" described in patent ref US4910652 (1990) has two different pairs of Light Emitting Diode's - one pair to illuminate the watch face and the second pair to serve as a flashlight. The "timepiece device" described in patent ref US 5548565 (1996) has one Light Emitting Diode provided on the side of an outer case and one pair of Light Emitting Diode's provided at the outer periphery of the dial to illuminate the dial for easy reading of time.
The US patent ref 6565253 (2003) describes a watch that includes a light attached movably to the watch and directed away from the face of the watch. Light Emitting Diode's illuminated by DC power provides a compact assembly that utilizes minimum amount of pace is described in the US patent ref 7023763 (2006). Though this patent provides a means for illuminating the watch face, a high intensity flashlight and a watch locator beacon, all this is accomplished by the use of separate Light Emitting Diode's which consume more power from the battery.
While many other possibilities like the electroluminescent sheet and Light Emitting Diode exist the present invention uses a light emitting diode powered by a separate battery. The invention described herein has only one Light Emitting Diode which serves two intended functions viz; lights up the face of the watch to read time and at the same time acts as a flash light. The light emitting diode also has a delay mechanism incorporated into its circuitry which will help the wearer perform an activity like inserting a key into a key hole more comfortably.
The movement used in the wrist watch with flash light is of a normal type where the 3 hands (hour, minute and seconds hands) used for indicating time can be fitted. The parts comprising the flash light function is mounted in a housing in such a way that the Light Emitting Diode lights up on pressing a switch provided at the side. The positioning of Light Emitting Diode is such that it enables both reading the time as well as perform

simple tasks like to find way in the dark, searching for key hole, looking for fallen objects like keys, etc that could normally be carried out with a flash light. OBJECTIVES OF THE INVENTION
Main objective of the invention is to provide a flash light function and a light source for reading time under inadequate lighting conditions incorporated in the wrist watch thus providing an additional utility to the watch.
Another object of the invention is to provide a delay mechanism that will help the wearer perform tasks more comfortably.
STATEMENT OF INVENTION
The invention described herein provides a quartz analogue wristwatch with a Light Emitting Diode that functions both as a flash light and as a light source for illuminating the dial face along with a delay mechanism incorporated into the circuitry.
BRIEF DESCRIPTION OF DRAWING
FIG. 1 represents cross-section showing position of Light Emitting Diode in the final assembly of watch which consists of the following parts:
Movement
Battery for flash light functioning
Light Emitting Diode
Dial
Glass
Case body
Housing (for components of flash light kit)
FIG. 2 shows position of Light Emitting Diode on the face of the watch with switch to activate the Light Emitting Diode.
FIG. 3 shows an exploded view of the components forming the flash light kit with following components:
Housing
Contact plate
Electronic circuit board with Light Emitting Diode
Battery
Metal mount
Screws
FIG. 4 represents the electronic circuitry for the Light Emitting Diode.

DETAILED DESCRIPTION OF THE DRAWING
FIG.l represents cross section of a complete wrist watch fitted with flashlight. Movement (1) is fitted with a dial (2) and is housed inside a case (3). The housing (4) houses components required to energize the Light Emitting Diode (5) and also acts as a cushioning for the movement (1), very similar to the plastic movement holder used in a normal watch. The housing (4) has an opening in it to ensure positioning of Light Emitting Diode (5) at the required height.
The switch (6) shown in FIG.2, when pressed, closes the circuit thus energizing the Light Emitting Diode (5).
FIG.3 shows the components that form the flash light kit. The housing (4) houses all parts forming the flash light kit. The other parts of the flash light kit consist of a contact plate (7) which is mounted in the housing (4) in such a way that it ensures contact between the switch (6) and the electronic circuit board (8). The battery (9) supplies power to the Light Emitting Diode (5) and is held in position in the housing (4) by the metal mount (10) and screws (11).
FIG.4 shows the electronic circuitry of the Light Emitting Diode.
WE CLAIM
1) A quartz analogue wristwatch consisting of a Light Emitting Diode energized by a battery with a robustly designed electronic circuitry performs the function of a flash light and allows reading of time under inadequate lighting conditions.
2) The quartz analog wristwatch of claim 1 consists of a switch on the side of the outer case which when pressed energizes the Light Emitting Diode.
3) The quartz analog wristwatch of claim 1 to 2 is provided with a robust construction of a flash light usable in a watch form factor and without adversely increasing the size.
4) The quartz analog wristwatch of claim 1 to 3 consists of a flash light kit consisting of parts as explained under clause 4.3.
05) The quartz analog wristwatch of claim 1 to 4 consists of an electronic circuitry as
laid out in FIG.4.
06) The quartz analog wristwatch of claim 1 to 5 consists of a separate battery for
energizing the flash light thus allowing normal functioning of the watch even in case the
flash light battery fails.