CN2309477Y

CN2309477Y - Protective movable energy-saving working lamp

Info

Publication number: CN2309477Y
Application number: CN 97228222
Authority: CN
Inventors: 佟复华; 王文焕
Original assignee: Transport And Economy Inst Science Academy Ministry Of Railways
Current assignee: Transport And Economy Inst Science Academy Ministry Of Railways
Priority date: 1997-10-13
Filing date: 1997-10-13
Publication date: 1999-03-03
Anticipated expiration: 2007-10-13

Abstract

The utility model relates to a protective movable energy-saving working lamp which is especially suitable for the illumination of the loading and unloading operation of railway at night, belonging to a portable illuminating device. The protective movable energy-saving working lamp is characterized in that a lamp box body is provided with a built-in control panel, a voltage partitioned displaying device and a clamping device. The working lamp is a cold luminous beam energy-saving projector lamp which can rotate up and down, left and right; a power cord is a long connecting line which ensures a lamp head to be disassembled for use; a control circuit is provided with a voltage detection circuit, a low-voltage automatic power-off protection circuit and a constant voltage current limiting charging circuit which all can display in partition. With high brightness, energy-saving property and convenient use and portability, the utility model solves the problem that the prior art can not automatically detect battery and automatically cut off power in case of overload.

Description

The removable energy conservation lamp of protection type

The removable energy conservation lamp of protection type is applicable to that night work needs the place of certain illumination intensity, particularly is applicable to the illumination of railway handling operation at night, belongs to portable lighting device.

At present railway such as carries out at the bottom of handling operation, car inspection and repair or the sweeper night at the portable type lighting working light that work is used; its power supply mostly is dc charging power supply; but because battery is not had to detect automatically, cross the safeguard measure of putting automatic outage; occur battery easily and spend scaling short service life; in addition; its brightness of the light source that is adopted is also not high enough, and lamp holder is the flexible operating of fixing that is not easy to.

The purpose of this utility model is exactly to overcome the shortcoming that above-mentioned prior art exists, and designs a kind ofly can detect cell voltage automatically, and had and put automatic power-off protection function, and the portable portable lamp of night work of lamp light source brightness high energy-saving type.

The purpose of this utility model can realize in the following manner.

This portable lamp is provided with light fixture; lamp box; the lamp box handle; batteries and control circuit; its lamp box front is provided with built-in control panel; voltage segmentation display lamp is arranged on it; also be provided with jig on the lamp box; about light fixture is; about all turnable structure; lamp source in the light fixture is a cold light Shu Jieneng projecting lamp; the power line of lamp holder is long line; batteries is valve controlling sealed maintenance-free lead-acid battery group; control circuit is by the main circuit I of lighting a lamp; voltage detecting and holding circuit II that sectional shows; modified constant-voltage charge circuit III is formed; voltage detecting and holding circuit II connect same power supply with the main circuit I of lighting a lamp and are controlled by same switch; in the main circuit I of lighting a lamp, be connected to the normally closed contact of relay; the excitation astragal of this relay is in the power circuit of voltage detecting and holding circuit II, and charging circuit III and batteries are socket connection.

The utility model has following advantage compared with the prior art: 1. light fixture adopts cold light bundle projecting lamp, be that energy-conservation brightness is high again, reflector is designed to two kinds of different angles, be suitable near, the remote use, light fixture can about, left and right sides free adjustment, lamp line is long line, and light fixture can be unloaded from casing, conveniently installs and uses; 2. built-in control panel can effectively prevent to be broken by exterior object; 3. control circuit can realize that the supply voltage segmentation shows, is convenient to check at any time that low pressure is cut off the power supply automatically, can effectively protect battery to improve its service life.

Below in conjunction with drawings and Examples, the utility model is described in further detail.

Fig. 1, Fig. 2 are respectively this portable lamp external structure front view, left view

Fig. 3 is the control circuit The general frame

Fig. 4 is the charging circuit schematic diagram

Fig. 5 is voltage detecting and holding circuit schematic diagram

1 handle among the figure, 2 charging sockets, 3 lamp box, 4 batteries, 5 cables, 6 light fixtures, 7 power switches, 8 built-in panels, 9 voltage display lamps, 10 jigs, 11 cold light bundle electricity-saving lamps, 12 adjustment screw, 13 butterfly screws.

In the present embodiment; voltage detecting and holding circuit (II) are provided with 8 voltage comparator ic 1～IC8 arranged side by side; the normal phase input end of each comparator is connected to the power end of the different reference voltages of being made up of voltage-stablizer W2 and corresponding divider resistance R1～R8; the inverting input of each voltage comparator is connected the end of dropping resistor Rj; another termination lighting lamp power positive pole of dropping resistor; the output of each voltage comparator is connected with corresponding light emitting diode D1～D7 backward end respectively; the forward end of each light emitting diode is attempted by the lighting lamp power positive pole; in above-mentioned voltage comparator; there is the normal phase input end voltage of a voltage comparator ic 6 to be made as the minimum permission magnitude of voltage of batteries; the output of this voltage comparator ic 6 connects the control utmost point of bidirectional triode thyristor SCR; bidirectional triode thyristor SCR just; negative pole is serially connected in the coil magnetization circuit of relay J 1, and this field circuit connects lighting lamp power (Fig. 5).

The main circuit I of lighting a lamp constitutes (Fig. 3) by the normally closed contact J1.3 series connection of batteries E, K switch, lamp source 11 and relay J 1.

The formation of modified constant-voltage charge circuit III is: transformer B1, full-wave rectifier Z1, filter capacitor C1, large power triode BG1 connect step by step, between the colelctor electrode of filter capacitor C1 and triode BG1, be connected to current-limiting resistance R, be connected to voltage-stabiliser tube W1 on the base stage of triode BG1, current-limiting resistance R two ends cross-over connection has light emitting diode D (Fig. 4).

Lamp box jig 10 is located at the bottom of lamp box 3, and its shape and truck side top adapt; The angle of cold light Shu Jieneng projecting lamp 11 its reflectors is respectively 38 °, 60 °, at light fixture 6 front ends the sealing and dustproof cover is housed; Built-in control panel 8 is recess-like (Fig. 1, Fig. 2) with respect to the front of lamp box 3.The power line of light fixture adopts 3 meters long cables 5.

The following summary low pressure principle (referring to Fig. 3, Fig. 5) of cutting off the power supply automatically: when battery voltage during at normal value, the field circuit of electromagnetic relay J1 coil is obstructed, its normally closed contact J1.3 closure, and the power turn-on K switch, lamp 11 is bright.When battery voltage was lower than minimum permission magnitude of voltage, voltage comparator ic 6 output high level triggered bidirectional triode thyristor SCR conducting, relay J 1 excitation, and then its normally closed contact J1.3 disconnects, and lamp 11 cuts off the power supply automatically, protects battery pack can not cross effectively and puts.Show about the voltage segmentation, because of voltage comparator ic 1, IC2 ... positive terminal be connected on the power end of the different reference voltage values that set respectively, when lighting lamp power voltage is higher than the forward input voltage of some comparators, the output of this comparator is in low level, corresponding lumination of light emitting diode, otherwise extinguish, realize that thus segmentation shows.

Claims

1. removable energy conservation lamp of protection type; comprise light fixture; lamp box; the lamp box handle; batteries and control circuit; it is characterized in that: the lamp box front is provided with built-in control panel; supply voltage segmentation display lamp is arranged on it; also be provided with jig on the lamp box; about light fixture is; about all turnable structure; lamp source in the light fixture is a cold light Shu Jieneng projecting lamp; the power line of lamp holder is long line; control circuit is by the main circuit of lighting a lamp (I); voltage detecting and holding circuit (II) that sectional shows; modified constant-voltage charge circuit (III) is formed; voltage detecting and holding circuit (II) connect same power supply with the main circuit (I) of lighting a lamp and are controlled by same switch; in the main circuit of lighting a lamp (I), be connected to the normally closed contact of relay; the magnet exciting coil of this relay is connected in the power circuit of voltage detecting and holding circuit (II), and charging circuit (III) is socket connection with batteries.

2. the removable energy conservation lamp of protection type according to claim 1 is characterized in that in the control circuit:

The main circuit (I) of lighting a lamp is connected by the normally closed contact of batteries, lamp source and relay and is constituted;

The formation of voltage detecting and holding circuit (II) is, have two voltage comparators arranged side by side at least, its normal phase input end is connected to the power end of the different reference voltages of being made up of mu balanced circuit and corresponding divider resistance, the inverting input of voltage comparator is connected an end of dropping resistor, another termination lighting lamp power positive pole of dropping resistor, the output of voltage comparator is connected with corresponding light emitting diode backward end respectively, the forward end of each light emitting diode is attempted by the lighting lamp power positive pole, in above-mentioned voltage comparator, the normal phase input end voltage that a voltage comparator is arranged is the minimum permission magnitude of voltage of batteries, the output of this voltage comparator connects the bidirectional triode thyristor control utmost point, bidirectional triode thyristor just, negative pole is serially connected in the coil magnetization circuit of relay, and this field circuit connects lighting lamp power;

Batteries is valve controlling sealed maintenance-free lead-acid battery group;

The formation of modified constant-voltage charge circuit (III) is: transformer, full-wave rectifier, filter capacitor, large power triode connect step by step, between the colelctor electrode of filter capacitor and triode, be connected to current-limiting resistance, be connected to voltage-stabiliser tube on the base stage of triode, the cross-over connection of current-limiting resistance two ends has light emitting diode.

3. the removable energy conservation lamp of protection type according to claim 1 is characterized in that: described lamp box jig is located at the lamp box bottom, and its shape and truck side top adapt; The angle of described its reflector of cold light Shu Jieneng projecting lamp is respectively 38 °, 60 °, at the light fixture front end sealing and dustproof cover is housed; Built-in control panel is recess-like with respect to the lamp box front.