RU35865U1 - LED light - Google Patents

Description

LED flashlight

The utility model relates to lighting devices and can be used for local lighting of text documents, drawings, diagrams, maps, as well as for individual lighting of surrounding objects and as a signal device.

Known lighting device - a flashlight 1 containing a corne, a diffuser, a lamp, a switch, elements jmiajJm jpGiy

glasses to accommodate the batteries, and in the bottom of each of these glasses is made through a coaxial hole designed to accommodate the said adjusting screw.

The disadvantages of this device are the large size and uneconomical discharge of batteries.

A lighting device 2 is also known, comprising a housing, a power source, a switch, an LED, a connecting wire, a buffer unit made in the form of a resistor, the LED being connected in series with a switch, a power source, and a buffer unit.

However, the disadvantages of this device are: - the short period of continuous operation from a fully charged power source (accumulator batteries) without recharging due to large energy losses in the buffer node;

M.KL. F 21L 7/00

Description

-a significant drop in the brightness of the LED as the power source is discharged;

- the absence of an alarm when the power source is discharged below the maximum permissible value, which leads to a decrease in its resource.

The objective of the utility model is to eliminate these drawbacks, increase the efficiency of the device and its service life by reducing energy losses in the buffer unit, stabilizing the light flux and ensuring timely signaling about the maximum permissible discharge of the battery .: The problem was solved due to the fact that the LED light comprising a housing, an LED connected in series with a switch, a power source and a buffer unit, the latter comprising a voltage reference source, followed by tionary connected to the first input of the power supply voltage control device narrow pulse generator and a key stabilized current source, with one terminal of the power source is connected in series with the second input of the voltage control devices, a third input of which is parallel connected to the wire connecting the second terminal of the power supply with a switch.

The essence of the utility model is illustrated by the drawing, where in FIG. A a schematic diagram of the inventive device is shown, and in FIG. 2 is a block diagram of a buffer node.

The LED lamp contains a power source 1, a buffer unit 2, a connecting wire 3, a housing 4, a switch 5, an LED 6.

(-.

Description

The buffer unit 2 contains a reference voltage source 7, connected in series with the first input (a) of the voltage control device 8 of the power source (battery), a narrow pulse generator 9 and a key stabilized 1P 1m current source 10. One output of the power source 1 is connected in series with the second input (b) voltage control device 8, and the third input (c) of voltage control device 8 is connected in parallel to a wire connecting the second output of the power source to switch 5, the output (d) of key stabilization ovannogo current source 10 is connected in series with the LED 6.

LED flashlight works as follows.

When the switch 5 is turned on, the current from the power source

(battery) enters the load through the buffer unit

- LED 6.

In this case, two options are possible.

First option.

The battery voltage is normal.

The voltage monitoring device 8 determines that the voltage of the power source 1 is normal, and does not generate a signal “resolution, thereby prohibiting the operation of the narrow generator

pulses 9. As a result, the narrow pulse generator 9 does not generate a signal “blocking and the key stabilized current source 10 continuously” supplies the LED with a constant stabilized current.

Option Two.

Battery voltage is below normal.

.

Description

In this case, the voltage control device 8 of the power source generates a signal “resolution by which the narrow pulse generator 9 starts to generate rare short pulses” blocking, during which the key stabilized current source 10 stops generating current for the LED, i.e. a pause is created in the light stream. Thus, rare blackouts do not create discomfort for the user, but signal him about the discharge of the battery.

The design of the proposed LED flashlight can significantly reduce the energy loss in the buffer unit, thereby increasing the period of continuous operation of the cells from a single charge.

In addition, it provides a constant brightness of the glow of the LED flashlight in the range from a fully charged battery to its maximum permissible discharge.

The presence of an alarm about the maximum permissible discharge, by creating short-term periodic pauses in the light flux, provides the consumer with the opportunity to avoid a deep discharge of the battery and increase the lamp life.

Sources of information:

1. The author's certificate of the USSR No. 1714289, M. cl. F 21L 1/00 B.I. No. 7-92g.

2. The author's certificate of the USSR No. 2044211, M. cl. F 21L 7/00 B.I. No. 26-95g.

Claims (1)

A LED lamp comprising a housing, an LED connected in series with a switch, a power source and a buffer unit, characterized in that the buffer unit contains a reference voltage source connected in series with a first input of a voltage source control device, a narrow pulse generator and a key stabilized current source, moreover, one output of the power source is connected in series with the second input of the voltage control device, the third input of which is connected in parallel to the wire control panel connecting the second output of the power source with the switch, and the output of the key stabilized current source is connected in series with the LED.