RU67227U1 - SHAFT MINING HEAD - Google Patents

Abstract

The mine head lamp with battery power is designed for individual lighting of underground workings, mines, mines, etc. The luminaire is characterized by high compactness, reliability and ease of use, achieved by placing all the components of the luminaire in a single housing - the housing of the headlamp mounted on the helmet of the worker. The lamp contains an LED light source, which is made in the form of at least two light emitting diodes of different capacities for the main and emergency lighting and is separated from the battery by the control electronics unit. 11 s.p. f-ly, 5 ill ..

Description

The technical field to which the utility model relates.

The invention relates to the field of individual lighting equipment used for lighting underground workings, mines, mines, tunnels, etc.

State of the art

The well-known head lamp SGG-7 for individual illumination of a miner's workplace, containing a headlamp fixed to a helmet with a double-filament incandescent lamp, connected by means of a connecting cable to batteries placed in a separate casing (see the book “Devices for the extractive industries. Omsk, 2002). The luminaire includes a battery charge level control circuit and has the ability to automatically switch from the main to the standby mode, characterized by a reduced luminous flux, which allows the worker to come to the surface before the lamp is turned off and protects the battery from complete discharge and damage. The disadvantages of the luminaire are due to the use of an incandescent lamp with a high energy consumption of up to 1 A, for continuous operation of which a high-capacity battery (at least 10 A / h) is required during the working day, which has significant weight and dimensions, which makes it necessary its placement in a separate case worn on the miner's belt. At the same time, a long connecting cable from the belt to the helmet is a source of interference and danger when moving and working in cramped conditions. In addition, incandescent lamps have a small service life (≈200 hours), low vibration and shock resistance, and are a source of explosion and fire hazard.

Known mine lamp for personal use, containing a headlamp with a matrix of LEDs and a light converting system, a device for mounting the headlamp on a helmet, a casing with rechargeable batteries and a connecting cord (patent for invention No. 2187039, IPC: F21L 4/00, publ. 2002.08.10). Using LEDs as a light source can significantly increase the life of the lamp, (the life of the LED is 100,000 hours, which exceeds the life of an incandescent lamp by 500 times). LEDs consume significantly less power, are resistant to mechanical stress, do not heat up and have significantly brighter and cleaner light. The disadvantage of the said mine lamp is also the presence of a connecting cable between the headlight and the battery. Besides, in

it lacks a source of backup lighting, which contradicts the requirements of GOST: “Explosion-proof mine head lamps” GOST R 52066-2003.

Attempts to solve the problem of the “connecting cord” were made in a well-known mine lamp (see patent for the invention of the Russian Federation No. 2231711, IPC: F21L 4/00, publ. 2004.06.27), containing a headlamp with a matrix of LEDs and an associated battery made in in the form of two identical blocks fixed on the sides of the helmet, which significantly reduced the length of the connecting cords. However, the latter are passed on the outside of the helmet, therefore they are subject to various mechanical influences, in addition, an accurate calculation of the balance of the centers of gravity of the helmet, headlight and battery blocks is required.

Known portable flashlight with LED light source (see patent US 2006/0262524, publ. 11/23/2006), in the elongated housing of which together with the light source are three batteries. However, this flashlight is intended for manual use only, as It has dimensions and weight that do not allow its use as a head lamp.

A known lamp mounted on a helmet of a fireman, containing a U-shaped curved body, mounted above the visor of the helmet, where light sources in the form of emitting LEDs with reflectors and batteries are also located (see US patent No. 5408393, IPC: F21L 15/14, publ. 04/18/1995 g). However, the U-shaped design of the body, in contrast to the body of the headlight, allows you to get a significantly larger internal volume to accommodate the elements of the lamp. At the same time, the lamp has a small service life (up to 3 hours), which does not allow it to be used for continuous work taking place in the mine.

The head lamp containing the battery power source and an optical light unit (headlamp) fixed to the helmet, the light source in the form of a radiating LED with a reflector and an electronic control circuit ( US 2005/0174753, MPK: F21V 29/00, publ. 2005.08.11). The power source is made in the form of a pair of blocks with finger batteries fixed over the helmet and connected to the headlamp by electric wires. The latter are subject to shock and mechanical stress, which reduces the reliability of the lamp in the mine. The presence of wires leads to loss of electrical energy in resistance. Moreover, the placement on the helmet of several blocks worsens and complicates the operation of the device.

Utility Model Disclosure

The objective of the claimed utility model is to increase the reliability of the lamp and the convenience of its operation and maintenance.

The problem is solved due to the fact that in the mine head lamp powered by a rechargeable battery containing a lighting unit (headlight) fixed to the helmet, in the housing of which there is an LED light source with a reflector and a control electronics unit, according to the claimed utility model, the rechargeable battery is installed in one housing with a light source and separated from it by a control electronics unit.

The main positive result of the claimed utility model is the creation of a compact small-sized lighting device in which all the main units: the light source, the electronic control circuit and the power source, are placed in a single housing - the headlight housing, mounted on the helmet of a miner or other worker. In the luminaire, sources of interference occurring in all previously known head luminaires are excluded: connecting cables and wires, which more than once led to danger to human life. The absence of external wires also eliminates the possibility of mechanical damage to communication lines, and therefore, significantly increases the reliability of the lamp, and at the same time facilitates its operation and maintenance.

The proposed luminaire arrangement allows the most compact placement of the main luminaire blocks inside the housing, while the light source is connected to the battery through an electronics unit located between them, which minimizes wired communication. Loss of energy on resistance is reduced, the reliability of the lamp units is increased.

In the specific case of the implementation of the claimed device, the electronics unit is an electronic circuit mounted on a circuit board. The light source contains at least two emitting LEDs of different power for the main and emergency lighting, mounted on one side of the aforementioned circuit board, on the other side of which is mounted an electronic circuit of the control electronics, closed by an intermediate cover. On the reverse side of the intermediate cover with respect to the electronic circuit, a lodgement is made for installing the battery.

As the main illumination LED, it is preferable to use a powerful LED with a circular side-emitting pattern. AT

in this case, using only a parabolic reflector, they provide the necessary indicators of illumination and the angle of direct exit of the light beam. For emergency lighting use low-power LEDs.

The use of LEDs of different power as light-emitting devices made it possible to reduce the required battery capacity by 4 times. It is preferable to use lithium rechargeable batteries in the luminaire, for example lithium-polymer. Such batteries are characterized by small dimensions and relatively long service life.

The proposed luminaire arrangement provides the location of the most dimensional and heavy battery cell at the base, i.e. closer to the helmet, which increases the stability of fixing the lamp on the helmet.

It is advisable to perform the mounting plate in the form of a cross section of the housing at the installation site of the board. When installed in a case, such a board divides the volume of the case into two compartments isolated from each other: one for the battery, and the other for the light source. This solution also improves the reliability and safety of the lamp.

In a specific implementation case, the control electronics unit includes a microprocessor unit that controls the operation of the devices included in the luminaire, and the associated battery charge control circuit and a switching unit that provides separate connection of light sources.

The microprocessor monitors the state of the battery through a charge level control circuit and, when the charge level drops to a critical value, puts the lamp in a low-power mode (i.e., an emergency LED with a lower power output), which eliminates the full discharge of the battery and allows the worker to come to the surface until the lamp is completely turned off. Switching modes of operation of the lamp can be done manually, for which a corresponding switch is provided.

In the specific case of the implementation of the luminaire, the microprocessor unit can perform some additional functions, for example, monitoring the current time and identifying the number of the luminaire. To visually present additional information - current time, lamp number and status (i.e. charge level) of the battery, a matrix of indicators is installed on the circuit board, and an additional window is installed in the housing in which the matrix is mounted.

To set the time, number of the lamp and view information of an additional window (matrix of indicators), a second switch is installed in the lamp. Both of these switches are displayed on the outer surface of the housing. Why switch rods are passed through the wall of the housing and are equipped with a silicone rubber seal. The ends of the rods forming the manual shift buttons are protected by an elastic membrane.

The housing has slots for charging the battery. In order to protect against ingress of dust, the nests are covered with protective caps.

In order to increase explosion protection, the luminaire housing can be solid cast, in which transparent windows are formed during the painting process.

Brief Description of the Drawings

The device and the operation of the lamp are illustrated by drawings, where in Fig.1 - shows a General view of the lamp; figure 2 is also a view a from figure 1; figure 3 is a cross-section aa from figure 2, shows the internal structure of the lamp; figure 4 is a section bB with figure 3; figure 5 - shows a view of a lamp mounted on a helmet.

Utility Model Implementation

The mine head lamp 1 contains (see FIGS. 1 and 2) a solid cast polycarbonate body 2 with a transparent window 3 and a cover 4. The window 3 is protected from abrasion by a thin silicate glass glued to the body 2 with special light-transmitting glue. A mounting plate 5 is installed in the housing 2, which divides the volume of the housing 2 into compartments 6 and 7 for the light source and power supply, respectively (see Figs. 3, 4). On the side of the board 5 facing the window 3, the main light source is fixed - an LED 8, located at the focus of the parabolic reflector 9, and two emergency LEDs 10 with reflectors 11, a matrix of indicators 12 and switches 13 and 14 are mounted. To view the information of the matrix of indicators serves as an additional transparent window 15. On the other side of the board 5, an electronic circuit 16 of the control electronics unit is mounted, closed by an intermediate cover 17, on the reverse side of which a lodgement 18 is made, in which s-polymer rechargeable battery 19. The battery 19 is fixed top cover 4, which presses the battery 19 to the intermediate cover 17.

The switch rods 13 and 14 are passed through the wall of the housing 2, protected by silicone rubber seals and a membrane 20.

As a LED 8 for the main lighting, a powerful Creee LED was used (the luminous efficiency of the latest developments of this company was 131 Lm / W) based on silicon carbide and gallium nitride, which has a circular side radiation pattern. The optical system from such an LED 8 and a parabolic reflector 9 allows you to simultaneously obtain a wide angle of distribution of the light flux (up to 120 °) and a direct angle of directivity of the main beam, which ensures high lamp performance and the quality of illumination of objects.

The device operates as follows.

By means of the clip 21, the lamp 1 is fixed on the helmet 22 (see figure 5). By pressing the rod of button 13, the lamp 1 is turned on, and the LED 8 is turned on. By pressing the button 13 again, the lamp is switched to the emergency light source - LEDs 10. When the button is pressed again, the light turns off. LED current stabilization allows for a stable light output, which provides the necessary illumination for the entire time of continuous operation of the lamp, which is at least 10 hours.

Simultaneously with the possibility of manually switching the lamp operating modes, the charge level of the battery 19 is controlled by the microprocessor of the electronics unit (circuit 16). At the end of the work cycle, i.e. when the battery reaches the set minimum critical voltage level, the microprocessor automatically switches the power supply from the main light source to the emergency one, due to which the user receives information about the need to stop working and exit to the surface during the operation of the emergency light source. This eliminates the deep discharge of the battery and its damage.

The issuance of additional service information is controlled by the second button 14. By successively pressing the rod of the button 14 through the transparent additional window 15, information can be read about the current time, the remaining energy of the battery 19 (or about the charge level when charging the battery), and the lamp number. By manipulating the two buttons 13 and 14, you can set the exact time and identification number of the lamp.

To charge the battery 19, the luminaire 1 is connected to the charger through the sockets 23 made on the cover 4. When the battery is charged, the charging process is constantly indicated. When the required energy is reached, the lamp is automatically disconnected from the charging circuit.

Claims (12)

1. The mine head lamp powered by a rechargeable battery, comprising a lighting unit fixed to a helmet, in the housing of which there is an LED light source with a reflector and a control electronics unit, characterized in that the rechargeable battery is installed in one housing with a light source and is separated from it by a unit control electronics. 2. The lamp according to claim 1, characterized in that the light source contains at least two emitting LEDs of different power for the main and emergency lighting, mounted on one side of the circuit board, on the other side of which is mounted an electronic circuit of the control electronics, closed an intermediate cover, on the reverse side of the electronic circuit of which a lodgement is made for installing the battery. 3. The lamp according to claim 1 or 2, characterized in that a lithium battery is used as the storage battery. 4. The lamp according to claim 2, characterized in that the main lighting LED is made in the form of a powerful LED with a circular side radiation pattern placed at the focus of the parabolic reflector. 5. The lamp according to claim 2, characterized in that the mounting plate is made with the shape and dimensions corresponding to the cross section of the housing at the installation site of the board. 6. The lamp according to claim 2, characterized in that the control electronics unit includes a microprocessor unit that controls the operation of the devices included in the lamp, a control circuit for the charge level of the battery and the switching unit. 7. The lamp according to claim 6, characterized in that the microprocessor unit additionally implements the functions of monitoring the current time and the identification number of the lamp, while the lamp is equipped with a matrix of indicators to visually represent the current time, number of the lamp and the state of the battery, and an additional window is made in the housing to visualize the mentioned matrix of indicators. 8. The lamp according to claim 7, characterized in that it is equipped with two switches displayed on the outer surface of the housing, one of which is designed to switch the operating modes of the light source, and the other to set and view information of the matrix of indicators. 9. The lamp according to claim 8, characterized in that the switch rods are passed through the wall of the housing and are equipped with a silicone rubber seal and protected by a membrane. 10. The lamp according to claim 1, characterized in that on the housing there are sockets for charging the battery. 11. The lamp according to claim 10, characterized in that the sockets are closed with protective caps. 12. The lamp according to any one of claims 1 to 11, characterized in that the housing is made in the form of a single molded part with a transparent window formed by painting the housing.