LIGHTING APPARATUS

A lighting apparatus includes a light module, a fixing member, a hanging member and an elastic member. The fixing member is fixedly connected to the light module. The fixing member is provided with a side slot. The hanging member is provided with a shaft. The hanging member further includes a hook. The shaft is inserted into the side slot from a side. The shaft is configured to rotate to be in a first state or a second state within the side slot. In the first state the hook is in a vertical position. In the second state the hook is in a horizontal position. The elastic member is fixedly provided on the light module. The elastic member is configured to push upward and press tightly against the shaft to maintain the shaft in the first state or the second state.

FIELD

The present invention is related to a lighting apparatus, and more particularly related to a lighting apparatus used in industrial environment.

BACKGROUND

Light-emitting diodes, or LEDs, have come a long way since their invention in the1960s. Initially limited to small indicator lights in electronics due to their low brightness and narrow color range, LEDs have evolved dramatically. Advances in materials and manufacturing processes have made LEDs more efficient, capable of producing brighter light across a wide range of colors, from cool whites to warm hues. The shift from incandescent and fluorescent lighting to LEDs has transformed many industries and homes, primarily due to the energy efficiency and longevity LEDs offer compared to traditional light sources.

One of the most significant areas where LEDs have made a noticeable impact is in consumer electronics. From backlighting in televisions and smartphones to indicators on gadgets, LEDs are widely integrated into everyday devices. Their small size, durability, and low power consumption make them ideal for these applications. Additionally, the use of LED screens has drastically improved display clarity and resolution, offering deeper blacks and brighter colors, which is especially evident in OLED (Organic LED) displays.

In the realm of residential and commercial lighting, LEDs have revolutionized how spaces are illuminated. LED bulbs consume far less energy than their incandescent counterparts, and they last significantly longer, reducing the need for frequent replacements. They are also more versatile, allowing for features such as dimming, color temperature adjustments, and smart home integration. As a result, LEDs have become the standard choice for modern lighting solutions in homes, offices, and public spaces.

The automotive industry has also embraced LED technology for various applications. From headlights and taillights to interior cabin lighting, LEDs are now the go-to choice for manufacturers. LEDs offer quicker response times, which is crucial for brake lights, and they provide better visibility for headlights due to their brightness and directivity. Moreover, their ability to operate in a wide range of temperatures makes them ideal for outdoor automotive use in diverse weather conditions.

In public infrastructure, LEDs have become a key component in street lighting and traffic signals. Many cities have retrofitted their streetlights with LED systems to reduce energy consumption and maintenance costs. LEDs also offer improved visibility for drivers and pedestrians, as they can be directed more precisely, minimizing light pollution and focusing illumination where it is needed. Traffic signals benefit from the longevity and reliability of LEDs, ensuring that they function properly without frequent maintenance or replacement.

The entertainment industry has also benefited from the development of LED technology, particularly in stage lighting and displays for concerts, theaters, and live events. LED lights allow for dynamic color changes and patterns that can be synchronized with music and other effects, enhancing the visual experience. The introduction of large-scale LED video walls has transformed stage designs, allowing for creative backdrops and digital environments that were previously impossible with traditional lighting setups.

In addition to entertainment, LEDs have become an essential tool in the medical field. From surgical lighting to specialized devices for treating certain medical conditions, LEDs are used due to their precision, low heat emission, and long lifespan. For instance, certain wavelengths of LED light are employed in phototherapy to treat skin conditions, while others are used in diagnostic equipment and operating room illumination.

One of the more recent trends in LED development is their integration into agricultural technology. LEDs can be used in indoor farming to provide specific wavelengths of light that optimize plant growth. By tailoring the spectrum of light, indoor farms can ensure that plants receive the optimal amount of energy for photosynthesis, leading to faster growth rates and higher yields. Additionally, LED systems in agriculture reduce the energy consumption compared to traditional lighting methods used in greenhouses.

The growing popularity of LED technology in the realm of smart lighting has also been notable. LED systems can now be integrated with home automation platforms, allowing users to control the lighting in their homes via smartphones, voice commands, or sensors. These systems offer not just convenience but also energy-saving features, such as automatic dimming or switching off lights when a room is unoccupied. The combination of LEDs with smart home technology exemplifies how modern advancements continue to shape how lighting is used in daily life.

Despite these wide applications, LED technology is still under continuous development. Researchers and engineers are exploring ways to make LEDs even more efficient and adaptable to specific needs, such as improving color rendering for specialized lighting applications or developing LEDs that can operate at even higher temperatures. Another area of focus is the miniaturization of LEDs, which could lead to breakthroughs in wearable technology and microdisplays. As demand grows for tailored lighting solutions across different industries, LEDs are poised to meet these evolving requirements.

In industrial environments such as tunnel construction, basements, factories, and building sites, lighting devices play a crucial role in ensuring the safety and productivity of workers. These environments often require robust and durable lighting solutions capable of withstanding harsh conditions such as dust, moisture, vibrations, and extreme temperatures. LED technology has become a popular choice for these applications due to its high light intensity, energy efficiency, and ability to operate in tough environments. Unlike traditional bulbs, which can fail under rough conditions, industrial-grade LED lights are built to last, providing consistent illumination even in the most challenging settings.

One of the primary concerns in these industrial scenarios is worker safety. Proper illumination is critical for preventing accidents, allowing workers to see hazards and perform their tasks accurately. In tunnels or construction sites, where visibility can be compromised by dust or debris, high-intensity LED lights ensure that the work area is well-lit. Additionally, many industrial lighting devices come with safety features such as shatterproof casings, waterproof designs, and anti-glare coatings to minimize the risk of injury from broken lights or excessive brightness. By meeting these stringent safety standards, these lighting solutions help protect workers and reduce the likelihood of workplace accidents.

There is still room for innovation in industrial lighting to further enhance safety and efficiency. For example, smart lighting systems could be developed to automatically adjust brightness based on the specific task or environment, conserving energy while still maintaining optimal visibility. Innovations in portable, rechargeable lighting devices could also make it easier to provide adequate lighting in remote or temporary locations without a reliable power source. Investing in these technological advancements would not only improve the safety and well-being of workers but also reduce energy consumption and operational costs, bringing long-term benefits to industries and the communities they serve.

SUMMARY

In some embodiments, a lighting apparatus includes a light module, a fixing member, a hanging member and an elastic member.

The fixing member is fixedly connected to the light module.

The fixing member is provided with a side slot. The hanging member is provided with a shaft. The hanging member further includes a hook. The shaft is inserted into the side slot from a side. The shaft is configured to rotate to be in a first state or a second state within the side slot.

In the first state the hook is in a vertical position. In the second state the hook is in a horizontal position.

The elastic member is fixedly provided on the light module. The elastic member is configured to push upward and press tightly against the shaft to maintain the shaft in the first state or the second state.

In some embodiments, a limiting groove is provided on a top slot wall of the side slot.

A limiting block is provided on a side of the shaft. The limiting block is shaped to match the limiting groove. In the first state the limiting block is located within the limiting groove.

In some embodiments, slot walls on both sides of the limiting groove in the side slot are arc-shaped inner walls.

The shaft is configured to press down the elastic member to disengage the limiting block from the limiting groove.

The shaft is configured to rotate to the second state and during rotation the limiting block moves in contact with the arc-shaped inner walls.

In some embodiments, the elastic member includes a spring seat and a first spring provided within the spring seat.

The spring seat is threadedly connected to the light module.

An exposed end of the first spring outside the spring seat is configured to contact the shaft.

In some embodiments, the elastic member includes a pushing seat, a pushing seat, a second spring and a pressure plate.

The pushing seat is configured to move along a height direction of the side slot.

A top of the pushing seat is configured to contact the shaft, a second spring.

The second spring is vertically arranged and a top end of the second spring is configured to push the pushing seat upward, a pressure plate. The pressure plate is fixedly provided. The pressure plate is configured to support a lower end of the second spring.

In some embodiments, the hanging member further includes an inverted U-shaped frame.

The hook is connected to the U-shaped frame. The shaft is provided on an inner wall of each of two opposite side bars of the U-shaped frame.

In some embodiments, the side slot is provided on two opposite sides of the fixing member.

Two shafts are provided on the hanging member. The two shafts are spaced apart and coaxially arranged opposite to each other. Each shaft is inserted into the side slot on the corresponding side.

In some embodiments, a columnar through-hole is provided on the fixing member.

An insertion post is provided on the light module. The insertion post is inserted into the through-hole to position the fixing member. The fixing member is fixedly connected to the light module by screws.

In some embodiments, a reinforcing plate is connected between the U-shaped frame and the hook.

The reinforcing plate is triangular. A surrounding frame is rotatably provided on the reinforcing plate.

The surrounding frame is configured to block a gap between the U-shaped frame and a hook head of the hook. The surrounding frame is positioned and engaged on the hook head with the aid of a torsion spring.

In some embodiments, the light module includes a driver module, a light housing and a light source.

A bottom side of the driver module is coupled to a top surface of the light housing.

The light housing has a light container for placing the light source.

In some embodiments, the driver module is detachable from the light housing. The fixing member is fixed to the light module.

In some embodiments, the light housing has a track for inserting the light module.

A lock is manually operated to lock the drive module to the light housing when the light module is sliced to a predetermine lock position.

In some embodiments, the fixing member has a dragging structure for changing a total length of the fixing member.

When the light module is dragged to carry the fixing member, the fixing member changes the total length under a dragging force, and.

When the dragging force disappears, the dragging structure is kept at the total length.

In some embodiments, the fixing member has a rotation structure for changing a rotation angle of the light module relative to the hanging member.

In some embodiments, a controller of the light module adjusts light parameter of a light source of the light module according to the rotation angle.

In some embodiments, the light module has a socket for detachably plugging an assistant light module.

The assistant light module has a battery charged via the light module via the socket.

In some embodiments, the assistant light module automatically turns on when the socket stops providing power.

In some embodiments, the assistant light module has a gas sensor for detecting harmful gas.

In some embodiments, the assistant light source has a magnetic structure to quickly attach to the socket and easily to be detached from the light module.

In some embodiments, the assistant light module has a position speaker.

The position speaker has a position switch to configure a position information.

When the position speaker is turned on, the position speaker generates a sound corresponding to the position information calling for help.

DETAILED DESCRIPTION

InFIG.14, a lighting apparatus includes a light module605, a fixing member603, a hanging member601and an elastic member6021.

The fixing member602is fixedly connected to the light module605.

The fixing member602is provided with a side slot. The hanging member is provided with a shaft. The hanging member further includes a hook. The shaft is inserted into the side slot from a side. The shaft is configured to rotate to be in a first state or a second state within the side slot. Following examples show more detailed examples.

For lighting fixtures that require suspension, especially industrial and mining lamps, the most common method currently on the market is to attach stainless steel hanging rings to the fixtures. These rings are installed on the lamps and are fixed in place after installation. However, this creates a problem because the hanging rings have a certain volume and remain in a vertical position, occupying space. As a result, the overall lighting fixture not only incurs high packaging costs but also takes up space, leading to reduced cabinet loading capacity and higher logistics and transportation costs. Therefore, these hanging rings are generally not pre-installed and require the client to install them afterward, which is also inconvenient.

Please refer toFIGS.1-9. This application provides a specific implementation of a lighting apparatus. The lighting apparatus in this implementation includes a fixing member1, a hanging member, and an elastic member.

The fixing member1is fixedly connected to the light module, and the fixing member1has a side slot2.

The hanging member is equipped with a shaft3, and the hanging member also includes a hook4. The shaft3is inserted into the side slot2from the side. The shaft3can be rotated to achieve two states within the side slot2: a first state and a second state. In the first state, the hook4is in a vertical position, and in the second state, the hook4is in a horizontal position.

The elastic member is fixedly installed on the light module and is used to push upwards and press tightly against the shaft3to keep it in either the first state or the second state.

Specifically, the fixing member1is part of the lighting apparatus provided in this implementation. It is not part of the light module itself. Its function is to connect with the hanging member through a specific shape, thereby enabling the hook4to achieve both vertical and horizontal positions.

The fixing member1provided in this implementation is fixedly connected to the light module. On the side of the fixing member1, there is a side slot2. The side slot2is a recessed groove on the side of the fixing member1, and this groove extends through the bottom surface of the fixing member1, meaning there is no groove wall on one side of the bottom surface of the fixing member1.

The hanging member has a shaft3, which enters the side slot2from the side, meaning the axis of the shaft3is perpendicular to the bottom surface of the side slot2.

Two side slots2can be created, located on two opposite sides of the fixing member1. Correspondingly, two shafts3can be set up, each entering the side slot2on the corresponding side, forming a clamping effect on the fixing member1. When assembled, the end faces of both shafts3abut the bottom surface of the side slot2, maintaining a certain clamping force.

The states of the shaft3include the first state and the second state. In the first state, the hook4is in a vertical position, and in the second state, the hook4is in a horizontal position. The switch between the first state and the second state of the shaft3is achieved through rotation, which simultaneously rotates the hook4. The rotation angle can specifically be 90 degrees.

The function of the elastic member is to push against the shaft3, pressing it tightly against the inner wall of the side slot2, thereby keeping it in either the first state or the second state. This maintains the stability of the hook4's position. When external force is applied to the shaft3, it can overcome the elastic force, thus achieving the state switch.

Therefore, the beneficial effect of the lighting apparatus provided in this implementation is that in the first state, the hook4is in a vertical position, and in the second state, the hook4is in a horizontal position. When packaging and transportation are required, the hook4can be placed horizontally, thus reducing occupied space, increasing container loading capacity, and saving costs. When use is required, the hook4can be placed in a vertical position. The operation is simple, convenient, and quick. Moreover, whether in the vertical or horizontal position, the pushing of the elastic member can stably maintain the current state, providing good stability.

As shown inFIGS.3and4, in a further implementation, a limiting groove7is set on the top groove wall of the side slot2, and a limiting block8is set on the side of the shaft3. The shape of the limiting block8matches that of the limiting groove7, and in the first state, the limiting block8is located inside the limiting groove7.

When the shaft3is in the first state, the limiting is achieved in this way. The purpose of limiting is to prevent the shaft3from rotating, keeping the hook4in a vertical position, thus enabling hanging.

Specifically, a limiting groove7is set at the top of the side slot2, and a limiting block8is set on the shaft3. When the limiting block8is inserted into the limiting groove7, the shaft3cannot rotate, keeping it in the first state. At this time, it needs the pushing of the elastic member. The elastic member pushes the shaft3upwards, pushing the limiting block8of the shaft3into the limiting groove7. This prevents the shaft3from rotating, fixing it in the first state, thereby keeping the hook4in a vertical position, providing good stability.

As shown inFIGS.5,6,7, and8, when the shaft3needs to be rotated to switch states, the operator first presses down on the hook4, driving the shaft3downwards, compressing the elastic member, and causing the limiting block8to disengage from the limiting groove7. At this time, the hook4is then pushed, causing the shaft3to rotate 90 degrees, thereby switching the shaft3to the second state. At this point, the hook4also switches from a vertical position to a horizontal position, completing the storage. The light module and the hanging structure can then be packaged and transported as a whole.

When in the second state, if the hook4is released by hand, the elastic member pushes against the shaft3again, pressing the shaft3tightly against the wall of the side slot2, which to some extent prevents the shaft3from rotating or swaying.

When the shaft3needs to be switched back to the first state, the elastic member can be pressed down again, and the shaft3can be rotated in the opposite direction, or the hook4can be directly pushed to swing, causing the shaft3to rotate, overcoming the elastic force in the process of rotation.

The effect of this implementation is that the limiting block8set on the shaft3and the limiting groove7set on the top of the side slot2, through their mutual engagement, combined with the pushing of the elastic member, can position the shaft3well in the first state, thus ensuring the stable suspension of the hook4and guaranteeing the stability of the light module.

As shown inFIG.6, furthermore, the side slot2walls on both sides of the limiting groove7are arc-shaped inner walls9. The shaft3disengages the limiting block8from the limiting groove7by pressing down the elastic member, and the shaft3rotates to the second state with the limiting block8moving along the arc-shaped inner walls9during rotation.

Specifically, after the elastic member is compressed, the limiting block8disengages from the limiting groove7. After disengagement, the shaft3can be rotated. During rotation, the limiting block8moves along the arc-shaped inner walls9, meaning the movement trajectory of the limiting block8can be the same as the extension direction of the arc-shaped inner walls9, allowing the arc-shaped inner walls9to guide the limiting block8, making the movement smoother.

When the shaft3has rotated 90 degrees, it stops rotating. Under the action of elastic force, the shaft3and the limiting block8can press tightly against the inner wall of the side slot2, providing a certain degree of compression positioning.

When rotating in the opposite direction to restore the first state, the limiting block8continues to move in the opposite direction along the arc-shaped inner walls9. When the limiting block8aligns with the limiting groove7again, it enters the limiting groove7under the action of elastic force, achieving positioning.

As shown inFIGS.4,6, and8, the elastic member provided in this implementation can be specifically as follows: the elastic member includes a spring seat5and a first spring6set inside the spring seat5. The spring seat5is threaded onto the light module, and the exposed end of the first spring6outside the spring seat5is used to contact the shaft3.

Specifically, the spring seat5is a seat body with an accommodating cavity, which is used to accommodate the first spring6. Part of the first spring6protrudes from the accommodating cavity. The spring seat5is installed on the light module and can be threaded. When the spring seat5is installed, it is in a vertical state, meaning the accommodating cavity is in a vertical state. This way, the first spring6is in a vertical state and can push against the shaft3in the vertical direction.

Specifically, the spring seat5can be installed at the position of the light module corresponding to the side slot2, facilitating the pushing of the shaft3inside the side slot2.

The effect of this implementation is that using the form of a spring seat5can achieve good fixation and positioning, making the positioning accurate. Moreover, when the first spring6is compressed, the spring seat5can still be stably fixed without tilting, providing good supporting force and effectively ensuring the pushing direction of the first spring6.

As shown inFIGS.10-13, in some other implementations, the elastic member can also be as follows: the elastic member includes a pushing seat16, a second spring17, and a pressure plate18.

The pushing seat16is used to move along the height direction of the side slot2, and its top is used to contact the shaft3.

The second spring17is set vertically with its top end used to push against the pushing seat16. The pressure plate18is fixedly set and is used to support the lower end of the second spring17.

Specifically, the top of the pushing seat16can be arc-shaped, or have an arc-shaped groove, which can fit and contact the shaft3and push against it.

The pushing seat16can move along the height direction of the side slot2under the elastic force of the second spring17, thus achieving the pressing operation on the shaft3.

The pressure plate18serves to support the second spring17, allowing the second spring17to be positioned accurately and maintain a stable state. Screws can also be set at the bottom of the pressure plate18. The screws are fixedly connected to the light module and press against the pressure plate18, keeping it stable.

As shown inFIG.9, furthermore, side slots2are set on two opposite sides of the fixing member1, and there are two shafts3on the hanging member. The two shafts3are spaced apart and set coaxially opposite each other, with each shaft3inserted into the side slot2on the corresponding side.

This implementation provides a preferred setting. To ensure the stability of the hanging member, two shafts3are set up, and two side slots2are set up. The two shafts3are set opposite and spaced apart from each other, each entering into a side slot2, forming a clamping state. This can effectively ensure the stability of the hanging member and also ensure good stability during rotation.

While using two shafts3, this implementation also provides that the hanging member includes an inverted U-shaped frame10. The hook4is connected to the U-shaped frame10, and the shafts3are set on the inner walls of the two opposite side bars of the U-shaped frame10.

Specifically, the hanging member includes the hook4, the U-shaped frame10, and the shafts3. The hook4is connected to the middle bar of the U-shaped frame10, and the shafts3are connected to the opposite inner walls of the two side bars, thus forming the oppositely set shafts3, which can form a clamping state on the fixing member1.

As shown inFIG.9, in this implementation, the fixing member1is fixedly connected to the light module. The fixing member1has a columnar through-hole12, and an insertion post11is set on the light module. The insertion post11is inserted into the through-hole12to position the fixing member1, and the fixing member1is fixedly connected to the light module by screws.

Specifically, to ensure the firmness of the connection between the fixing member1and the light module, the fixing member1is connected to the light module by screws. Threaded holes can be created on the light module. For further accurate positioning, an insertion post11is set up on the light module, with a corresponding through-hole12on the fixing member1. The insertion post11passes through the through-hole12, achieving good positioning of the fixing member1and effectively preventing it from swaying.

The through-hole12is created in the middle position between the two side slots2, making the side slots2symmetrically arranged about the through-hole12.

As shown inFIG.1, the connection form between the U-shaped frame10and the hook4provided in this implementation is direct fixed connection. Additionally, to enhance the connection strength, a reinforcing plate13is connected between the U-shaped frame10and the hook4. The reinforcing plate13is triangular.

The reinforcing plate13is triangular in shape, allowing one edge of the plate to connect to the hook4and another edge to connect to the U-shaped frame10, providing a good reinforcing connection effect.

To prevent the hook4provided in this implementation from unhooking during use, this implementation further sets up the following: a surrounding frame14is rotatably set on the reinforcing plate13. The surrounding frame14is used to block the gap between the U-shaped frame10and the hook head of the hook4. The surrounding frame14is positioned and engaged at the hook head with the aid of a torsion spring.

Specifically, when using the hook4, it is hooked onto a ring-shaped or rod-shaped object, and then the gap is blocked by the surrounding frame14to prevent unhooking.

Under the action of the torsion spring, the surrounding frame14maintains the state of blocking the gap, i.e., the closed state. Pushing the surrounding frame14inward will open it, but it cannot be pushed outward, thus preventing the object inside the hook from unhooking.

The surrounding frame14can be a structure enclosed by rods.

This application also provides a specific implementation of an industrial and mining lamp, which is equipped with the lighting apparatus provided in any of the above implementations. Please refer toFIG.1.

Since the industrial and mining lamp15provided in this implementation has this lighting apparatus, the hook4can be placed in a horizontal position during packaging and transportation, making packaging and transportation convenient.

In the first state the hook is in a vertical position. In the second state the hook is in a horizontal position.

The elastic member is fixedly provided on the light module. The elastic member is configured to push upward and press tightly against the shaft to maintain the shaft in the first state or the second state.

In some embodiments, a limiting groove is provided on a top slot wall of the side slot.

A limiting block is provided on a side of the shaft. The limiting block is shaped to match the limiting groove. In the first state the limiting block is located within the limiting groove.

In some embodiments, slot walls on both sides of the limiting groove in the side slot are arc-shaped inner walls.

The shaft is configured to press down the elastic member to disengage the limiting block from the limiting groove.

The shaft is configured to rotate to the second state and during rotation the limiting block moves in contact with the arc-shaped inner walls.

In some embodiments, the elastic member includes a spring seat and a first spring provided within the spring seat.

The spring seat is threadedly connected to the light module.

An exposed end of the first spring outside the spring seat is configured to contact the shaft.

In some embodiments, the elastic member includes a pushing seat, a pushing seat, a second spring and a pressure plate.

The pushing seat is configured to move along a height direction of the side slot.

A top of the pushing seat is configured to contact the shaft, a second spring.

The second spring is vertically arranged and a top end of the second spring is configured to push the pushing seat upward, a pressure plate. The pressure plate is fixedly provided. The pressure plate is configured to support a lower end of the second spring.

In some embodiments, the hanging member further includes an inverted U-shaped frame.

The hook is connected to the U-shaped frame. The shaft is provided on an inner wall of each of two opposite side bars of the U-shaped frame.

In some embodiments, the side slot is provided on two opposite sides of the fixing member.

Two shafts are provided on the hanging member. The two shafts are spaced apart and coaxially arranged opposite to each other. Each shaft is inserted into the side slot on the corresponding side.

In some embodiments, a columnar through-hole is provided on the fixing member.

An insertion post is provided on the light module. The insertion post is inserted into the through-hole to position the fixing member. The fixing member is fixedly connected to the light module by screws.

In some embodiments, a reinforcing plate is connected between the U-shaped frame and the hook.

The reinforcing plate is triangular. A surrounding frame is rotatably provided on the reinforcing plate.

The surrounding frame is configured to block a gap between the U-shaped frame and a hook head of the hook. The surrounding frame is positioned and engaged on the hook head with the aid of a torsion spring.

InFIG.14, the light module includes a driver module603, a light housing6051and a light source6052.

A bottom side6031of the driver module603is coupled to a top surface6053of the light housing6051.

The light housing6051has a light container6054for placing the light source6052.

InFIG.14, the driver module603is detachable from the light housing6051. The fixing member602is fixed to the light module605.

In some embodiments, the light housing6051has a track604for inserting the light module605.

A lock606is manually operated to lock the drive module605to the light housing6051when the light module605is sliced to a predetermine lock position, which is at the position asFIG.14shows.

InFIG.15AandFIG.15B, the fixing member701has a dragging structure710, like a gear structure with multiple segments for users to select one segment to stay for changing a total length704of the fixing member701.

When the light module703is dragged to carry the fixing member701, the fixing member701changes the total length under a dragging force.

When the dragging force disappears, the dragging structure710is kept at the total length.

In some embodiments, the fixing member has a rotation structure for changing a rotation angle705of the light module relative to the hanging member, which is perpendicular for the dragging direction707.

InFIG.16, the light module801has a socket801for detachably plugging an assistant light module888.

The assistant light module888has a battery807charged via the light module801via the socket802. For example, the socket802may be a standard charging socket like USB socket. In some other embodiments, the socket802may be a proprietary socket that routes a driving current to the assistant light module888. When the light module801is electrically connected to a power source, the light module has a power path for charging the battery807of the assistant light module888.

In some embodiments, the assistant light module888automatically turns on when the socket stops providing power.

In some embodiments, the assistant light module888has a gas sensor805for detecting harmful gas.

In some embodiments, the assistant light source888has a magnetic structure804to quickly attach to the socket802and easily to be detached from the light module801.

In some embodiments, the assistant light module888has a position speaker.

FIG.17shows such an example, the position speaker903has a manual switch902to manually adjusts to correspond to a position value. In this example, it has two switches respectively correspond to two digits that can map to different positions, e.g.10or20positions in a mining tunnel.

The position speaker903has a position switch to configure a position information. A speaker is controlled to generate a specific sound pattern to indicate the place the lighting apparatus is located.

When the position speaker is turned on, the position speaker generates a sound corresponding to the position information calling for help.

This is particularly helpful for the assistant light module to serve as a emergency light source while providing call-help device. In the mining tunnel, there are usually several locations, and wireless signals are usually fail to be transmitted but the vibration wave is still possible to be transmitted via the rock and detected by special detection. When the position information is decoded, it is easier to find out which position needs help. Such situation is usually related to power off and the emergency light needs to function.

In addition, the emergency is designed to be easily detached from the lighting apparatus so that users may bring the device when they go down a mining tunnel to work, set the position and start to work. If nothing goes wrong, great. But if something happens, the assistant light source may serve as an emergency light that workers can bring to find help and change its position configuration on the way to call help.

The embodiments were chosen and described in order to best explain the principles of the techniques and their practical applications. Others skilled in the art are thereby enabled to best utilize the techniques and various embodiments with various modifications as are suited to the particular use contemplated.