WO2019114694A1

WO2019114694A1 - Led emergency light bulb

Info

Publication number: WO2019114694A1
Application number: PCT/CN2018/120290
Authority: WO
Inventors: Yehua Wan; Xuchu Ge; Jinxiang Shen
Original assignee: Sengled Optoelectronics Co., Ltd
Priority date: 2017-12-11
Filing date: 2018-12-11
Publication date: 2019-06-20
Also published as: CN107975692B; CN107975692A

Abstract

A light-emitting diode (LED) emergency light bulb includes a casing structure (2), an optical cover (1), an LED module (4), a driving circuit, and a battery (5) passing through the driving circuit and the LED module. A lower end of the optical cover is connected to an upper end of the casing structure to form an inner chamber inside the optical cover and the casing structure. The LED module, the driving circuit, and the battery are disposed inside the inner chamber. A light-emitting side of the LED module faces toward an upper end of the optical cover. The driving circuit located on a back side of the LED module, which is opposite to the light-emitting side of the LED module. The battery protrudes out from the LED module at the light-emitting side of the LED module, and an upper end of the battery is located the light-emitting side of the LED module.

Description

LED EMERGENCY LIGHT BULB

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese Patent Application No. 201711308009.9, filed on December 11, 2017, the entire content of which is incorporated herein by reference.

FIELD OF THE TECHNOLOGY

The disclosure relates to the field of illumination and, in particular, to an LED emergency light bulb.

BACKGROUND

Lighting is using various light sources to illuminate work and living places or individual objects. A light bulb is a device for realizing a lighting function. Common emergency lighting devices include light-emitting diode (LED) emergency light bulbs.

In conventional technologies, the LED emergency light bulb may include a glass cover and a casing structure. An LED, a driving circuit for the LED, and a battery for the LED may be disposed in the casing structure, and the LED faces toward the glass cover to realize light emission.

However, in the conventional LED emergency light bulb, the battery, the LED, and the driving circuit are integrated together, causing the battery operating at a higher temperature under the influence of the LED and the driving circuit, and therefore, the battery does not have a long lifetime.

SUMMARY

To solve the above technical problem, the present disclosure provides a light-emitting diode (LED) emergency light bulb.

The LED emergency light bulb may include a casing structure, an optical cover, an LED module, a driving circuit, and a battery. A lower end of the optical cover may be connected to an upper end of the casing structure to form an inner chamber insider the optical cover and the casing structure. A light-emitting side of the LED module can face toward an upper end of the optical cover. The driving circuit may be located on a back side of the LED module, and the back side of the LED module is opposite to the light-emitting side of the LED module. The battery can pass through the LED module. The LED module, the driving circuit, and the battery may be disposed inside the inner chamber. The battery and the LED module may be respectively connected to the driving circuit. The battery protrudes out from the LED module at the light-emitting side of the LED module, and an upper end of the battery is located at the light-emitting side of the LED module.

In some embodiments, a length of the battery protruding from the LED module at the light-emitting side of the LED module is a first length. The first length may be greater than half of a total length of the battery.

In some embodiments, the LED emergency light bulb may include a battery holder connected to the LED module. The battery can be fixed relative to the LED module by the battery holder.

In some embodiments, the battery holder includes a holder body coupler to the LED module, and a support base disposed at a bottom of the holder body. The battery can be installed on the support base.

In some embodiments, a part or all of an outer surface of the battery is a reflective surface.

In some embodiments, the LED emergency light bulb may further include a battery case. The battery can be disposed in the battery case. The battery case may be mounted on the battery holder.

In some embodiments, the LED module may include a first circuit board passed through by the battery and an LED light source disposed on the first circuit board.

In some embodiments, the LED module may include a plurality of LED light sources. The plurality of LED light sources may be arranged around the battery.

In some embodiments, the battery may be perpendicular to the first circuit board.

In some embodiments, the driving circuit can be disposed on a second circuit board. The second circuit board may be mounted on the first circuit board or the casing structure.

In some embodiments, the LED emergency light bulb may further include a lamp head coupled to the lower end of the casing structure.

In the LED emergency light bulb provided by the present disclosure, the driving circuit can be located at the back side of the LED module, the battery can pass through the LED module, and the upper end of the battery can be located at the light-emitting side of the LED module. Thus, the battery can protrude out from the LED module at the light-emitting side of the LED module, the portion of the battery that protrudes out from the LED module can be apart from the driving circuit and the LED module. Compared to a scenario that the battery, the driving circuit and the LED module that are disposed close to each other, the design according to embodiments of present disclosure can effectively reduce the influence of the driving circuit and the LED module on the temperature of the battery. Such that, the temperature of the battery can be reduced, thereby extending the lifetime of the battery and reducing or eliminating the possibility for a security risk to occur.

In addition, the battery can pass through the LED module and the battery can protrude out from the LED module at the light-emitting side of the LED module. Such design can effectively improve the utilize efficiency of the space of the inner chamber, thereby reducing the size of the light bulb.

BRIEF DESCRIPTION OF THE DRAWINGS

To more clearly explain the embodiments of the present disclosure or the technical solutions in a conventional technology, the drawings used in the description of the embodiments or the conventional technology are briefly described below. Obviously, the drawings described below illustrate only some embodiments of the present disclosure. For those skilled in the art, other drawings may also be obtained based on these drawings without creative efforts.

FIG. 1 is a structural diagram of a light-emitting diode (LED) emergency light bulb according to some embodiments of the present disclosure;

FIG. 2 is a structural diagram of an LED emergency light bulb according to some other embodiments of the present disclosure;

FIG. 3 is a diagram of an internal structure of an LED emergency light bulb according to some embodiments of the present disclosure;

FIG. 4 is a cross-sectional view of an LED emergency light bulb according to some embodiments of the present disclosure;

FIG. 5 is a structural exploded view of an LED emergency light bulb according to some embodiments of the present disclosure;

FIG. 6 is a diagram of an internal structure of an LED emergency light bulb according to some other embodiments of the present disclosure;

FIG. 7 is a cross-sectional view of an LED emergency light bulb according to some other embodiments of the present disclosure; and

FIG. 8 is a structural exploded view of an LED emergency light bulb according to some other embodiments of the present disclosure.

Reference numerals in the drawings: 1-optical cover; 2-casing structure; 3-lamp head; 4-LED module; 41-LED light source; 42-first circuit board; 43-first height plane; 5-battery; 6-battery case; 7-battery holder; 71-holder body; 72-connecting element; 73-support base; and 8-second circuit board.

DETAILED DESCRIPTION

The following clearly describes the technical solutions according to embodiments of the present disclosure with reference to the accompanying drawings. Apparently, described embodiments are merely some but not all of the embodiments of the present disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without creative efforts shall fall within the scope of the present disclosure.

Some terms “first” , “second” , “third” , “fourth” , and the like, if any, in the specification and claims of the present disclosure and in the above drawings are used to distinguish similar objects and are not necessarily for describing a specific order or sequence. It should be understood that these terms may be interchanged where appropriate, so that the embodiments of the disclosure described herein can be implemented, for example, in other sequences than those illustrated or described herein. In addition, terms “include” and “have” , and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to some steps or units that are clearly listed but may include other steps or units that are not explicitly listed or inherent to the process, method, system, product, or apparatus.

The technical solutions of the present disclosure are described in detail with specific embodiments below. The following embodiments can be combined with each other, and some same or similar concepts or processes may not be repeated in some embodiments.

FIG. 1 is a structural diagram of a light-emitting diode (LED) emergency light bulb according to some embodiments of the present disclosure; and FIG. 2 is a structural diagram of an LED emergency light bulb according to some other embodiments of the present disclosure.

The LED emergency light bulb includes: a casing structure 2, an optical cover 1, an LED module 4, a driving circuit (not shown) , and a battery 5. An open end of the optical cover 1 (e.g., a lower end of the optical cover 1 shown in FIG. 1) is connected to a first end of the casing structure 2 (e.g., an upper end of the casing structure 2 shown in FIG. 1) , forming an inner chamber inside the optical cover 1 and the casing structure 2. The LED module 4, the driving circuit, and the battery 5 are all disposed inside the inner chamber.

The optical cover 1 is configured to allow the light emitted by the LED module 4 to pass through. In some embodiments, the optical cover 1 is simply translucent. In some other embodiments, the optical cover 1 can be configured to perform an optical treatment for the light emitted by the LED module 4. The first end of the optical cover 1 can be a lower end shown in FIG. 1 and FIG. 2, and the first end of the optical cover 1 can have an opening, i.e., the open end of the optical cover 1. The second end of the optical cover 1 can be an upper end shown in FIG. 1 and FIG. 2.

The optical cover 1 may include a first connecting structure, and the casing structure 2 may include a second connecting structure. The first connecting structure can be matched with and connected to the second connecting structure. The first connecting structure may be externally threaded and the second connecting structure may be internally threaded. Alternatively, the first connecting structure may be internally threaded, and the second connecting structure may be externally threaded. In this way, the optical cover 1 can be screwed to the casing structure 2. In some embodiments, the optical cover 1 can also be directly connected to the casing structure 2 through a manufacturing process.

The casing structure 2 may be as an opaque casing, which can be made of metal or plastic. In some embodiments, a material with a better heat dissipation performance can be used for the casing structure 2 to improve the overall heat dissipation performance of the light bulb.

FIG. 3 is a diagram of an internal structure of an LED emergency light bulb according to some embodiments of the present disclosure; and FIG. 4 is a cross-sectional view of an LED emergency light bulb according to some embodiments of the present disclosure.

Referring to FIG. 3 and FIG. 4, a light-emitting side (e.g., the top side) of the LED module 4 faces toward the second end of the optical cover 1. The driving circuit is located on a back side of the LED module 4, facing toward the first end of the optical cover. The battery 5 and the LED module 4 are respectively connected to the driving circuit.

The LED module 4 may include two opposite sides: a top side and a bottom side. The light-emitting side of the LED module 4 is the side where light emits out, which can be the top side of the LED module 4 shown in FIG. 3 and FIG. 7, and the back side of the LED module 4 can be a side opposite to the light-emitting side, which can be the bottom side shown in FIG. 3 and FIG. 7. In other words, the inner chamber formed by the optical cover 1 and the casing structure 2 can be partitioned into two spaces using the LED module 4 as the divider: a first space which the light-emitting side of the LED module 4 faces toward, and a second space which the back side of the LED module 4 faces toward. A component/structure being located at the light-emitting side of the LED module 4 means that the component is located in the first space of the inner chamber. Similarly, a component/structure being located at the back side of the LED module 4 means that the component is located in the second space of the inner chamber. In the conventional technology, circuitry parts of a light bulb other than a light-emitting circuit, including a battery and a part of or all of the driving circuit, can be placed in an inner chamber of the light bulb and face away from the light emitting side. That is, no other circuit exist above or beyond the light-emitting circuit in the inner chamber of a conventional light bulb, e.g., no other circuit is placed in an upper portion of the light bulb which is a space between the light-emitting circuit and an optical cover where light emits out.

The LED module 4 may include an LED light source 41 and a first circuit board 42. A light-emitting side (e.g., a top side) of the first circuit board 41 can be referred as the light-emitting side of the LED module 4. The LED light source 41 can be disposed on the first circuit board 42 (e.g., the surface at the light-emitting side) . A light-emitting surface of the LED module 4 refers to an outer surface of the LED module 4 that emits light (e.g., top surface where the LED light source 41 locates) .

Referring to FIG. 3, FIG. 4, FIG. 6, and FIG. 7, the battery 5 passes through the LED module 4, and a first end of the battery 5 (e.g., an upper end of the battery 5 shown in FIG. 3) is located at the light-emitting side of the LED module 4, so that the battery 5 can protrude from the LED module 4 (e.g., protruding from a surface of the LED module 4 at the light-emitting side of the LED module 4) . The length of the battery 5 protruding from the light-emitting surface of the LED module 4 can be referred as a first length. The first length L can also be understood as a length between the first end of the battery 5 and a first height plane 43 of the LED module 4.

The first height plane 43 is a plane perpendicular to the battery 5, and a part of the LED module 4 that is closest to the second end of the optical cover 1 is located in the plane.

The LED module 4 includes the LED light source 41 and the first circuit board 42. The battery 5 can pass through the first circuit board 42. In some embodiments, the first circuit board 42 includes a mounting hole. A shape and/or size of the mounting hole may be compatible with a cross-sectional shape and/or size of the battery 5. The mounting hole may locate at the center of the first circuit board 42. The battery 5 can pass through the mounting hole. The battery 5 can be perpendicular to the first circuit board 42.

In some embodiments, the LED module 4 includes at least one of the LED light sources 41 disposed around the battery 5. Further, the LED light sources 41 can be arranged around the battery 5. The arrangement of the LED sources 41 can achieve a uniform light emission of the LED emergency light bulb.

In some embodiments, a portion of the battery 5 that protrudes out of the mounting hole can be apart from the driving circuit and the LED module 4. For example, the length of such protruding portion of the battery 5 has the first length L. Compared to a design that disposes the battery 5, the driving circuit and the LED module 4 close to each other, the design of the present disclosure can effectively reduce the influence of the driving circuit and the LED module 4 on the temperature of the battery 5. Therefore, the temperature of the battery 5 can be reduced, thereby extending the lifetime of the battery 5 and reducing or eliminating the possibility for a security risk to occur. In addition, a first length L of the battery 5 can pass through the LED module 4. The above structural design that the battery protrudes out of the LED module 4 can effectively improve the utilize efficiency of the space of the inner chamber, thereby reducing the size of the light bulb.

In one conventional technology, the power of LED module 4 may be relatively low to ensure a relatively low temperature of the inner chamber. However, in this way, the LED does not have enough brightness. Compared to the conventional technology, using the technical solution of the present disclosure, the temperature of the LED emergency light bulb can be relatively low, and the LED emergency light bulb can have enough brightness. In some embodiments, the LED emergency light bulb may also have increased brightness. In another conventional technology, the inner space of the LED emergency light bulb is increased to have a separate space for the battery 5, such that the battery 5 can be apart from the driving circuit and the LED module 4 with a certain distance. However, in this way, the size of the LED emergency light bulb is relative larger or does not match a standard size, causing inconvenience of installation. Compared to the conventional technology, using the technical solution of the present disclosure, the LED emergency light bulb can have a reduced size or a standard size to be adapted to various requirements of situation and brightness, so as to have a higher universality.

In order to further ensure that the temperature of the battery is not affected, the first length L may be larger than half the length of the battery. Also, the present disclosure does not exclude any other dimensional design based on the above scheme.

FIG. 5 is a structural exploded view of an LED emergency light bulb according to some embodiments of the present disclosure; and FIG. 8 is a structural exploded view of an LED emergency light bulb according to some other embodiments of the present disclosure.

Referring to FIG. 3, FIG. 5, FIG. 6 and FIG. 8, the LED emergency light bulb further includes a battery holder 7, and the battery holder 7 is connected to the LED module 4. The battery 5 passes through the battery holder 7, and is fixed relative to the LED module 4. The battery holder 7 includes a holder body 71, and the holder body 71 can be coupled to the LED module 4.

The battery holder 7 can be a structure to fix the position of the battery 5. Further, the battery holder 7 can be a structure connected to the LED module 4. The battery holder 7 can realize the structural connection between the battery 5 and the LED module 4. In some embodiments, the battery holder 7 can realize a circuit connection.

In one embodiment, the battery holder 7 may include an annular holder body 71 and one or more connecting elements 72 disposed on an outer side the holder body 71. The holder body 71 can be a sleeve disposed outside the battery 5. The connecting element 72 can include a first through hole, and the first circuit board 42 of the LED module 4 can include a second through hole. A connecting part (e.g., a screw) can pass through the first through hole and the second through hole, to realize a connection and fixation (e.g., using a nut for the screw) between the battery holder 7 and the LED module 4. The annular holder body 71 can realize even/uniform distribution of received force (e.g., from holding the battery 5 and/or fixating the battery 5 on the first circuit board 42) . The quantity of the connecting element 72 can be larger than or equal to two. The connecting elements 72 can be uniformly arranged around the holder body 71 to be under a uniform force. The holder body 71 and the connecting element 72 can be integrally formed.

Referring to FIG. 3 and FIG. 5, in one embodiment, the LED emergency light bulb further includes a battery case 6, the battery 5 is disposed inside the battery case 6, and the battery case 6 is mounted to the battery holder 7.

The battery case 6 can be a structure configured to accommodate the battery 5 to achieve mounting and fixing of the battery 5. The battery case 6 and the battery holder 7 may be integrally formed or may be fixedly connected to each other.

The battery case 6 can be connected to the battery holder 7 in different approaches. For example, the inner side of the battery holder 7 can include a protrusion, and the battery case 6 can include a groove. The protrusion can be engaged with the groove. The protrusion can be inserted into the groove, so as to realize the positioning and mounting between the battery case 6 and the battery holder 7. The groove can be a structure formed by opening at the bottom of the battery case 6. The disclosure does not exclude any other connection approach.

The battery case 6 can also include a port, and a battery connecting wire passes through the port. One terminal of the battery connecting wire is connected to the battery, and the other terminal of the battery connecting wire is connected to the driving circuit.

The battery case 6 may also include a structure configured to fix the battery 5. For example, the battery case 6 may include a protruding platform. The material of the protruding platform may have some flexibility, which can facilitate the installation of the battery 5 (e.g., the battery 5 may press the protruding platform during installation) . After the battery 5 is installed, the protruding platform may be located at one end of the battery 5 to limit the location of the battery 5 (e.g., to prevent the battery 5 from moving around inside the battery case 6) . The disclosure does not exclude any other approach to fix and mount the battery 5.

In some embodiments, a part or all of the outer surface of the battery case 6 may be a reflective surface. In some embodiments, the outer surface of the battery case 6 may be coated with a material with a high reflectivity. In some other embodiments, the battery case 6 can be made of a material with a higher reflectivity. The light emitted by the LED module 4 can be reflected by the battery case 6, and the reflected light can emit through the optical cover 1. In some embodiments, an outer surface of a portion of the battery case 6, e.g., the portion of the battery case 6 protruding out from the light-emitting surface of the LED module 4 with the first length L, can be a reflective surface.

In some embodiments, in order to adjust the emitted light, the outer surface of the battery case 6 can be further configured to perform optical treatment on the emitted light. The outer surface of the battery case 6 can not only reflect light, but also achieve other effects such as concentrating, astigmatism, and diffusion of the reflected light.

As shown in FIG. 3 and FIG. 5, in some embodiments, the battery case 6 covers an outer surface of the battery 5. In some other embodiments, to reduce the cost of the material, the battery case 6 can also partially cover the outer surface of the battery 5 to protect the battery 5.

Referring to FIG. 8, the battery holder 7 further includes a support base 73. The support base 73 is disposed at a bottom of the holder body 71, and the battery 5 is loaded on the support base 73. Using the support base 73, the mounting support of the battery 5 can be achieved with less structure.

The support base 73 and the holder body 71 may be integrally formed or fixedly connected by a connecting structure. In some embodiments, the connecting between the support base 73 and the holder body 71 is similar with the way that the battery case 6 is mounted to the battery holder 7.

The support base 73 may also be annular. The diameter of hollow portion of the support base 73 may be smaller than the diameter of the battery 5, and the diameter of the hollow portion of the holder body 71 may be larger than the diameter of the battery 5. The battery connecting wire of the battery 5 can be connected to the driving circuit through the hollow portion of the support base 73.

When the support base 73 is used, as shown in FIG. 6 and FIG. 8, the battery case 6 may be omitted. In some other embodiments, the LED emergency light bulb may include the support base 73 and the battery case 6. The battery case 6 can also be mounted on the support base 73.

When the battery case 6 is not used, a part or all of the outer surface of the battery 5 may be a reflective surface (e.g., having a light reflecting effect) . The outer surface of the battery 5 may be coated with a material with a high reflectivity, or the battery 5 may be made of a material having high reflectivity. The light emitted by the LED module 4 may be reflected by the outer surface of the battery 5, and the reflected light can emit through the optical cover 1. In some embodiments, an outer surface of a portion of the battery 5, e.g., the portion of the battery 5 protruding out from the light-emitting surface of the LED module 4, can be a reflective surface.

In some embodiments, in order to adjust the emitted light, the outer surface of the battery 5 can be further configured to perform optical treatment on the emitted light. The outer surface of the battery 5 can not only reflect light, but also achieve other effects such as concentrating, astigmatism, and diffusion of the reflected light.

Referring to FIG. 5 and FIG. 8, the driving circuit is disposed on the second circuit board 8, and the driving circuit is mounted on the second circuit board 8 and/or the casing structure 2.

The second circuit board 8 can include a plug connector. The first circuit board 42 can include a plug interface. The plug connector can be inserted into the plug interface. As such, the second circuit board 8 can be positioned with respect to the first circuit board 42. Through the plug connector and the plug interface, the positioning and fixation between the first circuit board 42 and the second circuit board 8 can be realized. Based on the plug-in connection, the second circuit board 8 can be further connected to the casing structure 2.

The connection between the second circuit board 8 and the casing structure 2 can be any connection. For example, the casing structure 2 can be provided with a slot, and the second circuit board 8 can be inserted into the slot of the casing structure 2.

The driving circuit is located on the back side of the LED module 4. In some embodiments, the second circuit board 8 can be located on the back side of the LED module 4, so that all of the driving circuit is located on the back side of the LED module 4. In some other embodiments, the second circuit board 8 can be partially located on the back side of the LED module 4, such that one portion of the driving circuit is located on the back side of the LED module 4, and the other portion of the driving circuit is located on the light-emitting side of the LED module 4. That is, the second circuit board 8 can be inserted through the LED module 4.

Referring to FIGS. 1 to 8, the LED emergency light bulb may further include a lamp head 3 connected to a second end of the casing structure 2 (e.g., a lower end of the casing structure 2) . The driving circuit can be electrically connected to a lamp base by the lamp head 3 to drive the LED module 4 to operate with an external power supply.

The shape of the lamp head 3 can be suitable for insertion into a socket. A connection circuit can be disposed in the lamp base. The driving circuit is electrically connected to the circuit in the lamp base through the connection circuit. Depending on the structure of the lamp base and the circuit, the structure of the lamp head and the conduction manner of the connection circuit can be adaptively changed without departing from the scope of the disclosure.

The driving circuit can be configured to convert the external power supply into direct current (DC) and use the DC to drive the LED module 4 to emit light. The driving circuit can be connected to the LED light source 41 in the LED module 4 to drive the LED light source 41 to emit light.

In order to realize the conversion of the external alternating current (AC) into the DC, the driving circuit may include a rectifier module, which may be any circuit structure for realizing alternating current rectification. In one embodiment, the rectifier module may be a rectifier bridge composed of diodes. An output terminal of the rectifier module can be connected in parallel with a first capacitor for voltage regulation, and an input terminal of the rectifier module can also be connected in parallel with a second capacitor for voltage regulation.

In order to realize driving the LED module 4 by DC, the driving circuit may include a DC driving module, which can be any circuit structure that realizes a DC drive. In addition, the voltage input to the LED module 4 can be further regulated, and the voltage value and/or the current value can be adjusted so that the illumination of the LED module 4 satisfies the demand of a user.

The DC driving module can be a linear voltage regulating circuit, or a switching regulator circuit.

If the voltage regulation driving circuit is a switching regulator circuit, the voltage regulation driving circuit may also include one of a buck converter circuit, a switching DC boost circuit and a flyback converter circuit.

When the voltage regulation driving circuit is the buck converter circuit, the output voltage can be lower than the input voltage, and the output current is continuous.

In the description of the present disclosure, it should be understood that terms like “center” , “length” , “width” , “thickness” , “top” , “bottom” , “upper” , “lower” , “left” “right” , “front” , “back” , “vertical” , “horizontal” , “inner” , “outer” , “axial” , “circumferential” , etc., are intended to indicate orientations or positional relationships shown in the accompany drawings. Those terms are merely for the convenience of the description of the present disclosure and to simplify the description of the present disclosure. They are not intended to indicate or imply that a position or a component must have a specific orientation, a specific configuration to operate, and therefore cannot limit the present disclosure.

In the present disclosure, unless otherwise defined, the terms like “installation” , “connecting” , “mounted to” , “fixed to” , etc., should be understood broadly. For example, when a first component is referred to as “connecting” to a second component, it is intended that the first component may be fixedly connected or detachably connected to the second component, or the first component and the second component may be integrally formed. A connection between the first component and the second component may be mechanical connection, electrical connection or communicating connection. The first component may be directly attached to the second component or may be indirectly attached to the second component via an intermedia component. The first component can be internally connected to the second component, or the first component and the component may interact with each other. Specific meanings of the above terms in the present disclosure can be understood by those skilled in the art on a case-by-case basis.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than limiting the present disclosure. Although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it is possible to modify the technical solutions described in the foregoing embodiments or equivalently replace some or all the technical features; however, these modifications or replacements do not deviate the scope of the present disclosure.

Claims

A light-emitting diode (LED) emergency light bulb, comprising:

a casing structure;

an optical cover, a lower end of the optical cover being connected to an upper end of the casing structure to form an inner chamber inside the optical cover and the casing structure;

an LED module, a light-emitting side of the LED module facing toward an upper end of the optical cover;

a driving circuit located on a back side of the LED module, the back side of the LED module being opposite to the light-emitting side of the LED module; and

a battery passing through the LED module,

wherein:

the LED module, the driving circuit, and the battery are disposed inside the inner chamber;

the battery and the LED module are respectively connected to the driving circuit; and

the battery protrudes out from the LED module at the light-emitting side of the LED module, and an upper end of the battery is located at the light-emitting side of the LED module.
The LED emergency light bulb according to claim 1, wherein a length of the battery protruding out from the LED module at the light-emitting side of the LED module is a first length, and the first length is greater than half of a total length of the battery.
The LED emergency light bulb according to claim 1, further comprising a battery holder connected to the LED module, wherein the battery is fixed relative to the LED module by the battery holder.
The LED emergency light bulb according to claim 3, wherein the battery holder comprises:

a holder body coupled to the LED module; and

a support base disposed at a bottom of the holder body, the battery being installed on the support base.
The LED emergency light bulb according to claim 4, wherein a part or all of an outer surface of the battery is a reflective surface.
The LED emergency light bulb according to claim 3, further comprising a battery case, wherein the battery is disposed in the battery case, and the battery case is mounted on the battery holder.
The LED emergency light bulb according to claim 6, wherein a part or all of an outer surface of the battery case is a surface having a reflective effect.
The LED emergency light bulb according to claim 1, wherein the LED module comprises:

a first circuit board passed through by the battery; and

an LED light source disposed on the first circuit board.
The LED emergency light bulb according to claim 8, wherein the LED module comprises a plurality of LED light sources, the plurality of LED light sources being arranged around the battery.
The LED emergency light bulb according to claim 8, wherein the battery is perpendicular to the first circuit board.
The LED emergency light bulb according to claim 1, wherein the driving circuit is disposed on a second circuit board, and the second circuit board is mounted on the first circuit board or the casing structure.
The LED emergency light bulb according to claim 1, further comprising a lamp head coupled to a lower end of the casing structure.