DE8908556U1 - Underwater hand lamp - Google Patents

Description

- 5 Description

The invention or innovation relates to an underwater hand lamp with a rechargeable battery with a cylindrical, water- and pressure-tight aluminum housing, the back of which is closed with an aluminum plate and the front with a glass pane set in an aluminum ring and has a compact fluorescent lamp with a reflector as a spotlight.

Underwater -;iai:d2 »rnpen, especially ?y-;;5 use in Taachan, are well known and commercially available in a variety of designs.

Underwater hand lamps such as those carried by divers, for example, are subject to different and sometimes contradictory requirements depending on their intended use. The lamp should be small and handy; it should emit a high light intensity and have a battery capacity for as long a burning time as possible. For example, an underwater hand lamp manufactured and sold in the Federal Republic of Germany is known to have a burning time of 7C minutes with a 50 watt halogen bulb. The battery capacity is approximately 4 ampere hours at 12 volts.

The invention or innovation is based on the task of designing an underwater hand lamp that has a significantly higher light output with the same light intensity and/or the same battery capacity, and thus increases the burning time.

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p The solution to the task is achieved with the

Invention or innovation in an underwater hand-

j| lamp of the type mentioned above in that a

&zgr;- Compact fluorescent lamps in conjunction with a

Jr suitable reflector is used. Compared to incandescent lamps, compact fluorescent lamps

% lamps have a much higher light output.

&ngr; Since fluorescent lamps cannot be connected directly to one of*

Ii operated with the direct voltage supplied by the accumulator.

ti must be equipped with suitable electronics

% with high efficiency.

The housing of the underwater hand lamp consists of a cylindrical aluminum tube (1) which is connected at the front to a tube mounted in an aluminum ring (3).

■■■&igr; framed glass pane (2) is closed.

The glass pane (2) is connected to the aluminium ring (3) with a permanently elastic adhesive.

■ Sealing of aluminum ring/glass pane is done with a

double O-ring seal (5) or is designed as an adhesive connection.

&iacgr;&kgr; A handle (6) is attached to the side of the tube (1).

The back of the aluminum tube (1) is closed with an aluminum disk (4) which is provided with a double O-ring seal (5). The aluminum disk (4) is attached to the tube (1) via an easily removable connection. This is so that the back can be removed or opened when charging in order to ensure gas or pressure equalization.

On the rear panel (4), as shown in Figure I ₁ , there is a bushingless reed contact switch with reed contact (11), rotary knob (10) and magnet (built into the rotary knob) by means of which the lamp can be switched on and off.

There is also a light-emitting diode (12) on the rear panel (4), which serves as an optical signal source for the deep discharge indicator or deep discharge pre-warning indicator. In addition, a watertight sealable or watertight contact feedthrough is attached to the rear panel (4), via which an external power supply, e.g. an additional battery, can be connected, thus extending the lighting duration as desired.

According to Figure 1, a cast electronic module (14) is attached to the inside of the rear wall. The casting improves heat dissipation on the one hand and on the other hand prevents a possible electric shock when touching it (safety aspect!). The battery unit consists of the battery holder (8), the batteries (7) and the spacers (9). The battery holder (8) consists of a plastic tube and two plastic disks. The tube and disks are glued together. The spacers (9) can be threaded rods, for example. They prevent the battery unit from slipping. Two batteries (7) are always combined to form 10 battery columns, which in turn are arranged in a roundel on the battery holder (8). The individual batteries (7) are identical nickel-cadmium cells of the internationally standardized size C (baby).

By connecting the 20 cells in series, a nominal battery voltage of 24 volts is achieved.

Compact fluorescent lamps with reflectors are used as spotlights.

Depending on the operating mode of the fluorescent lamp, different basic circuits are used. When using a compact fluorescent lamp with a reflector and built-in electronic ballast for 220 volts AC, the basic circuit preferably used is as shown in Figure 2a.

When using a compact fluorescent lamp with reflector without built-in electronics in heated operation, the basic circuit shown in Figure 2b is preferably implemented.

When using a compact fluorescent lamp with reflector without built-in electronics in non-heated operation, the basic circuit shown in Figure 2c is preferably implemented.

What all circuits have in common is that boost converters or inverters have an efficiency of more than 80%.

In addition, when the deep discharge warning is triggered, an adjustment or a reduction in power can be made on the lamp side. In addition, the diodes Dl and D2 are designed as Schottky diodes in order to keep the voltage drops low. By removing the rear panel, a plug connection becomes visible that connects the battery and the radiator to the electronic module.

If the battery is to be charged, this plug connection is disconnected and an electrical connection is made from the battery side to the charger. By disconnecting the plug connection between the battery/spotlight and the electronics, it is almost impossible to switch on the device accidentally when the cover is open. The plug connection is indicated in the basic circuits ( ■) ) ·

Claims (21)

Protection claims 1. Underwater hand lamp with accumulator and a substantially cylindrical , water- and pressure-tight aluminum housing, the front of which is closed off by a glass pane set in an aluminum ring and the back by an aluminum plate, characterized in that the spotlight consists of a compact fluorescent lamp with reflector, and an electronic module which contains a circuit for minimizing power consumption and an optically indicating deep discharge warning with automatic shutdown. 2. Underwater hand lamp according to claim 1, characterized in that the aluminum ring (3) with glass pane (2) is inserted into the tube (1). 3. Underwater hand lamp according to claims 1 and 2, characterized in that it is sealed with two O-rings (5) . 4. Underwater hand lamp according to claims 1 to 3, characterized in that a handle (6) is attached to the side of the tube (1). 5. Underwater hand lamp according to claims 1 to 4, characterized in that ten accumulator columns are attached in the roundel on the holder (8), whereby the accumulator columns each consist of two accumulators (7). · W * 6. Underwater hand lamp according to claim 5, characterized in that 20 identical nickel-cadmium cells of the internationally standardized size C (baby) are used. 7. Underwater hand lamp according to claims 1 to 6, characterized in that the battery holder (8) is secured against slipping with a spacer (9). 8. Underwater hand lamp - according to claims 1 to 7, characterized in that a bushingless reed contact switch (10, 11) is located on the rear wall (4). 9. Underwater hand lamp according to claims 1 to 8, characterized in that a light-emitting diode (12) is provided on the rear wall (4) as a deep discharge indicator or Deep discharge warning indicator is installed. 10. Underwater hand lamp according to claims 1 to 9, characterized in that on the rear wall (4) there is a watertight sealable or watertight contact feedthrough (13) through which an external power supply can additionally be connected. 11. Underwater hand lamp according to claims 1 to 10, characterized in that a cast electronic module is located on the rear wall (4). 12. Underwater hand lamp according to claims 1 to 11, characterized in that a compact fluorescent lamp with reflector (15) and built-in electronic ballast for 220 volts AC voltage is used as a spotlight. 13. Underwater hand lamp according to claims 1 to 12, characterized in that the basic circuit according to Figure 2a is used. 14. Underwater hand lamp according to claims 1 to 11, characterized in that a compact fluorescent lamp with reflector without built-in electronics is used in heated operation as a spotlight. 15. Underwater hand lamp according to claims I to 11 and claim 14, characterized in that the principle circuit according to Figure 2b is used. 16. Underwater hand lamp according to claims 1 to 11, characterized in that a compact fluorescent lamp with reflector without built-in electronics is used as a spotlight in non-heated operation. 17. Underwater hand lamp according to claims 1 to 11 and claim 16, characterized in that the basic circuit according to Figure 2c is used. 18. Underwater hand lamp according to claims 3, 15 and 17, characterized in that the response of the deep discharge warning causes a reduction in the power of the lamp. 19. Underwater hand lamp according to claims 13, 15 and 17, characterized in that the diodes D1 and 02 are Schottky diodes. If · 4 1 * * · · * ti · * · III ■ - a ■ ·&igr; 20. Underwater hand lamp according to claims 13, 15 and 17, characterized in that the boost converter or inverter has an efficiency of more than 80%. 21. Underwater hand lamp according to claims 1 to 20, characterized in that the charging process of the battery takes place via a plug connection with the rear panel removed. Il It M f ! &igr; · ■■ ItIt · · · t I • t · · · t &igr;