CN107975692B

CN107975692B - LED emergency bulb

Info

Publication number: CN107975692B
Application number: CN201711308009.9A
Authority: CN
Inventors: 万叶华; 葛旭初; 沈锦祥
Original assignee: Sengled Optoelectronics Co Ltd
Current assignee: Sengled Optoelectronics Co Ltd
Priority date: 2017-12-11
Filing date: 2017-12-11
Publication date: 2020-03-17
Anticipated expiration: 2037-12-11
Also published as: CN107975692A; WO2019114694A1

Abstract

The invention provides an LED emergency bulb, which comprises: the LED module comprises a shell, an optical cover, an LED module, a driving circuit and a battery; the first end opening of the optical cover is connected with the first end of the shell so as to form an inner cavity in the optical cover and the shell, and the LED module, the driving circuit and the battery are all arranged in the inner cavity; the light emitting side of the LED module faces to the second end of the optical cover; the driving circuit is positioned on the backlight side of the LED module; the battery and the LED module are respectively connected with the driving circuit; the battery passes through the LED module, and a first end of the battery is positioned at the light-emitting side of the LED module, so that: the battery protrudes out of the light emitting side of the LED module. The invention can reduce the temperature of the battery, prolong the service life of the battery, reduce or eliminate the possibility of potential safety hazard and effectively improve the utilization rate of the space in the inner cavity.

Description

LED emergency bulb

Technical Field

The invention relates to the field of illumination, in particular to an LED emergency bulb.

Background

Illumination is a means of illuminating work and living places or individual objects with various light sources. A bulb may be understood as a device that performs a lighting function. A common emergency lighting device is a Light Emitting Diode (LED) emergency Light bulb.

In the prior art, the LED emergency bulb may include a glass cover and a lamp housing structure, the LED driving circuit and the battery may be disposed in the lamp housing structure, and the LED faces the glass cover to emit light.

However, in the LED emergency light bulb, since the battery, the LED and the driving circuit are integrated together, the battery operates at a high temperature under the influence of the LED and the driving circuit, and thus, the service life of the battery is not long.

Disclosure of Invention

The invention provides an LED emergency bulb, which aims to solve the problems that the service life of a battery is shortened and potential safety hazards are possibly caused.

According to a first aspect of the invention, there is provided an LED emergency bulb comprising: the LED module comprises a shell, an optical cover, an LED module, a driving circuit and a battery; the first end opening of the optical cover is connected with the first end of the shell so as to form an inner cavity in the optical cover and the shell, and the LED module, the driving circuit and the battery are all arranged in the inner cavity; the light emitting side of the LED module faces to the second end of the optical cover; the driving circuit is positioned on the backlight side of the LED module; the battery and the LED module are respectively connected with the driving circuit;

the battery passes through the LED module, and a first end of the battery is positioned at the light-emitting side of the LED module, so that: the battery protrudes out of the light emitting side of the LED module.

Optionally, the length of the battery protruding the light emitting side of the LED module is a first length, and the first length is greater than half of the length of the battery.

Optionally, the LED emergency bulb further includes a battery bracket, the battery bracket is connected to the LED module, and the battery is fixed to a position corresponding to the LED module by the battery bracket.

Optionally, the battery support includes a support body and a bearing base, the bearing base is disposed at the bottom of the support body, the battery is borne on the bearing base, and the support body is connected to the LED module.

Optionally, part or all of the outer surface of the battery is a surface with a light reflecting effect.

Optionally, the LED emergency bulb further comprises a battery housing, the battery is arranged in the battery housing, and the battery housing is mounted on the battery support.

Optionally, part or all of the outer surface of the battery case is a surface having a light reflecting effect.

Optionally, the LED module includes a first circuit board and an LED light source, the LED light source is disposed on the first circuit board, and the battery passes through the first circuit board.

Optionally, the LED module includes at least one LED light source, and the LED light source is disposed around the battery.

Optionally, the battery is perpendicular to the first circuit board.

Optionally, the driving circuit is disposed on a second circuit board, and the second circuit board is mounted on the first circuit board and/or the housing.

Optionally, the LED emergency bulb further includes a lamp cap, and the lamp cap is connected to the second end of the housing.

According to the LED emergency bulb provided by the invention, the driving circuit is positioned on the backlight side of the LED module, the battery penetrates through the LED module, and the first end of the battery is positioned on the light-emitting side of the LED module, so that: the battery protrudes out of the light-emitting side of the LED module, the protruding part of the battery can be separated from the driving circuit and the LED module, and compared with the battery, the driving circuit and the LED module which are arranged in a concentrated mode, the influence of the driving circuit and the LED module on the temperature of the battery can be effectively reduced, so that the temperature of the battery is reduced, the service life of the battery is prolonged, and the possibility of potential safety hazards is reduced or eliminated.

Meanwhile, the invention also effectively improves the utilization rate of the space in the inner cavity through the structural design that the battery penetrates through the LED module and the battery protrudes out of the light-emitting side of the LED module, thereby reducing the size of the bulb.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of an LED emergency light bulb according to the present invention;

FIG. 2 is a schematic view of a second embodiment of an LED emergency light bulb of the present invention;

FIG. 3 is a schematic view of the internal structure of an LED emergency light bulb of the present invention;

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

FIG. 5 is an exploded view of an LED emergency light bulb according to the present invention;

FIG. 6 is a schematic view of the internal structure of an LED emergency light bulb of the present invention;

FIG. 7 is a sectional view of an LED emergency light bulb according to the present invention;

fig. 8 is an exploded view of a LED emergency light bulb according to a second embodiment of the present invention.

Description of reference numerals:

1-an optical cover;

2-a housing;

3-a lamp holder;

4-an LED module;

41-LED light source;

42-a first circuit board;

43-a first elevation plane;

5-a battery;

6-a battery case;

7-a battery holder;

71-a stent body;

72-a connecting part;

73-a load-bearing base;

8-second circuit board.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

FIG. 1 is a schematic view of an LED emergency light bulb according to the present invention; fig. 2 is a schematic structural diagram of an LED emergency bulb according to a second embodiment of the present invention.

The LED emergency bulb comprises: a housing 2, an optical cover 1, an LED module 4, a driving circuit (not shown), and a battery 5; the first end opening of the optical cover 1 is connected with the first end of the outer shell 2, so as to form an inner cavity in the optical cover 1 and the outer shell 2, and the LED module 4, the driving circuit and the battery 5 are all arranged in the inner cavity.

The optical cover 1, it can be understood that the LED module 4 can emit light by using the optical cover 1, which can only realize light transmission, or can perform optical processing on the emitted light. The first end of the optical cover 1 may be the lower end as shown in fig. 1 and 2, which may have an opening, and the second end of the optical cover 1 may be the upper end as shown in fig. 1 and 2.

The optical cover 1 and the housing 2 may be respectively provided with a first connecting structure and a second connecting structure, and the first connecting structure and the second connecting structure are connected in a matching manner. The first and second connection structures may be external and internal threads so that the optical cover 1 may be screwed to the housing 2; the optical cover 1 may also be directly joined to the housing 2 by a manufacturing process.

The outer shell 2 can be understood as a light-tight shell, which can be made of metal or plastic, and in the specific implementation process, the material with better heat dissipation performance can be adopted, so that the heat dissipation performance of the whole bulb is improved.

FIG. 3 is a schematic view of the internal structure of an LED emergency light bulb of the present invention; FIG. 7 is a sectional view of an LED emergency light bulb according to the present invention.

Referring to fig. 3 and fig. 7, the light emitting side of the LED module 4 faces the second end of the optical cover 1; the driving circuit is positioned at the backlight side of the LED module 4; the battery 5 and the LED module 4 are connected to the driving circuit, respectively.

The light-emitting side of the LED module 4 is a side for emitting light, which may be understood as an upper side shown in fig. 3 and 7, and the backlight side of the LED module 4 is a side opposite to the light-emitting side, which may be understood as a lower side shown in fig. 3 and 7. In the related art, other circuit portions of the bulb, including a battery, a part or all of a driving circuit, and the like, are located on the backlight side, which merely represents a positional relationship, and does not mean that these circuit portions are disposed on the first circuit board 42.

The LED module 4 may include an LED light source 41 and a first circuit board 42, the LED light source 41 is disposed on a light emitting side of the first circuit board 42, and the light emitting side of the first circuit board 42 can be understood with reference to the light emitting side of the LED module 4.

FIG. 4 is a cross-sectional view of an LED emergency light bulb according to the present invention; FIG. 7 is a sectional view of an LED emergency light bulb according to the present invention.

Referring to fig. 3, 4, 6 and 7, the battery 5 passes through the LED module 4, and a first end of the battery 5 is located at a light emitting side of the LED module 4, so that: the battery 5 protrudes from the light emitting side of the LED module 4. The length of the battery 5 protruding the light emitting side of the LED module 4 is a first length, which can also be understood as a first length L between the first end of the battery 5 and the first height plane 43 of the LED module 4.

A first height plane 43, which is a plane perpendicular to the battery 5 where the end of the part of the LED module 4 closest to the second end of the optical cover 1 is located.

In order to accommodate the passing of the battery 5, since 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, and in particular, the first circuit board 42 has a ring shape to form a mounting hole at the center, and the mounting hole can accommodate the passing of the battery 5. The battery 5 may be perpendicular to the first circuit board 42.

In one embodiment, the LED module 4 includes at least one LED light source 41, and the LED light source 41 is disposed around the battery 5 and further can be arranged around the battery 5. The light-emitting device can reasonably distribute the light-emitting distribution under the condition of light-emitting so as to meet the requirement of uniform light-emitting.

In this embodiment, the first length L of the battery 5, i.e. the protruding portion, can be separated from the driving circuit and the LED module 4, and compared with the battery 5, the driving circuit and the LED module 4 which are centrally disposed, the influence of the driving circuit and the LED module 4 on the temperature of the battery 5 can be effectively reduced, so that the temperature of the battery 5 is reduced, the service life of the battery 5 is prolonged, and the possibility of occurrence of potential safety hazards is reduced or eliminated. Meanwhile, the invention also effectively improves the utilization rate of the space in the inner cavity through the structural design that the battery 5 penetrates through the LED module 4 and has the first length L, namely the battery protrudes out of the light-emitting side of the LED module, thereby reducing the size of the bulb.

Compared to other solutions for operating at higher temperatures of the battery, for example, the power of the LED module 4 is made low enough to ensure that the temperature in the inner cavity is low, but this results in the disadvantage that the brightness of the LED is not sufficient. Compared with the scheme, the scheme of the embodiment can ensure that the LED maintains the required brightness while reducing the temperature. It can also be understood that the scheme of the embodiment can relatively improve the brightness of the LED emergency light bulb. For another example, the internal space of the LED emergency bulb may be enlarged to leave a separate space for the battery, and the battery may be kept at a certain distance from the driving circuit and the LED module, but the LED emergency bulb may have a larger size or may not be standard, and is inconvenient to install. Compared with the scheme, the scheme of the embodiment can reduce the size of the LED bulb, or enable the LED emergency bulb to adapt to the requirements of various scenes and brightness in a standard size, and has higher universality.

In order to further ensure that the temperature of the battery is not affected, the first length L may be made greater than half the length of the battery. At the same time, the invention does not exclude any dimensioning based on the above solution.

FIG. 5 is an exploded view of an LED emergency light bulb according to the present invention; fig. 8 is an exploded view of a LED emergency light bulb according to a second embodiment of the present invention.

Referring to fig. 3, 5, 6 and 8, the LED emergency light bulb further includes a battery holder 7, the battery holder 7 is connected to the LED module 4, and the battery 5 is fixed to the LED module 4 by the battery holder 7. The holder body 71 may be connected with the LED module 4.

The battery holder 7 can be understood as any structure that can fix the position of the battery 5. Which may be embodied as a structure for connecting the LED modules 4. The battery support 7 realizes the structural connection of the battery 5 and the LED module 4, and on the basis, the connection of a circuit can be realized.

In one embodiment, the battery holder 7 may include an annular holder body 71 and a connecting portion 72 disposed outside the holder body 71, the holder body 71 may be disposed around the battery 5, the connecting portion 72 may be provided with a first through hole, the first circuit board 42 of the LED module 4 may be provided with a second through hole, and the connecting member passes through the first through hole and the second through hole, so that the battery holder 7 may be connected to the LED module 4. The annular stent body 71 can achieve uniform stress. The number of the connecting portions 72 may be greater than or equal to 2, which may be uniformly distributed around the bracket body 71 to further satisfy uniform stress of the connecting performance. Further, the holder body 71 and the connecting portion 72 may be integrally formed.

Referring to fig. 3 and 5, in an embodiment, the LED emergency light bulb further includes a battery housing 6, the battery 5 is disposed in the battery housing 6, and the battery housing 6 is mounted on the battery bracket 7.

The battery case 6 may be understood as a structure for accommodating the battery 5, so as to fix and protect 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 connection between the battery case 6 and the battery holder 7 can be enumerated as follows: the inner side of the battery bracket 7 is provided with a convex part, the battery shell 6 is provided with a clamping groove, the convex part is matched with the clamping groove, and the relative positioning and installation between the battery shell 6 and the battery bracket 7 are realized by inserting the convex part into the clamping groove; wherein, the slot can be a structure arranged at the bottom of the battery shell 6. Also, the invention does not exclude any other way of realising the connection.

The battery shell 6 can also be provided with an opening for a battery connecting wire to pass through, one end of the battery connecting wire is connected with the battery, and the other end of the battery connecting wire can be connected with a driving circuit.

Structures for fixing the battery 5 may also be provided in the battery case 6, such as: the battery case 6 may be provided therein with a boss having a certain flexibility suitable for the installation of the battery 5, and the boss may be located at an end surface of the battery 5 after the battery 5 is installed to restrict the position of the battery 5. Meanwhile, the present invention does not exclude any other means for fixing and mounting the position of the battery 5.

In one embodiment, a part or all of the outer surface of the battery case 6 is a surface having a light reflecting effect. The external surface of the battery case 6 can be coated with a material with high reflectivity, or the battery case 6 can be made of a material with high reflectivity, so that light emitted by the LED module 4 can be reflected to the optical cover 1 for emitting light through the reflection of the external surface of the battery case 6.

In a specific implementation process, in order to adjust the light emission, the outer surface of the battery case 6 may be further optically processed to reflect light and simultaneously achieve any effect such as light condensation, light diffusion, and the like.

In the solutions shown in fig. 3 and 5, the battery case 6 covers the outer surface of the battery 5, and the battery case 6 may also partially cover the outer surface of the battery 5, so as to reduce the material consumption and relatively reduce the cost on the basis of protecting and installing the battery 5.

Referring to fig. 8, the battery holder 7 may further include a carrying base 73, the carrying base 73 is disposed at the bottom of the holder body 71, and the battery 5 is carried on the carrying base 73. By using the bearing base 73, the mounting support of the battery 5 can be achieved with less structure.

The load-bearing base 73 and the bracket body 71 may be integrally formed, or may be fixedly connected by a connecting structure. The battery case 6 may be attached to the battery holder 7 in a fixed manner.

The bearing base 73 may also be annular, with the diameter of the annular hollow portion being smaller than the diameter of the battery, and the opposite, hollow portion of the holder body 71 being larger than the diameter of the battery. The battery connection line of the battery 5 may be connected to the driving circuit through the hollow portion of the carrier base 73.

In the case where the mount base 73 is used, as shown in fig. 6 and 8, it is not necessary to use the battery case 6, and in another alternative embodiment, the mount base 73 and the battery case 6 may be used together, and therefore, the battery case 6 may be attached to the mount base 73.

In the case where the battery case 6 is not used, some or all of the outer surfaces of the batteries 5 are surfaces having a light reflecting effect. The outer surface of the optical cover 1 can be coated with a material with high reflectivity, or the battery 5 made of a material with high reflectivity can be selected, so that light emitted by the LED module 4 can be reflected to the optical cover 1 for emitting light through reflection of the outer surface of the battery 5.

In a specific implementation process, in order to adjust the light emission, the outer surface of the battery 6 may be further optically processed to reflect light and simultaneously achieve any effect such as light condensation, light diffusion, and the like.

Referring to fig. 5 and 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 housing 2.

The second circuit board 8 may be provided with a plug connector, and the first circuit board 42 may be provided with a socket, and the second circuit board 8 may be positioned relative to the first circuit board 42 by plugging the plug connector into the socket. The positioning between the first circuit board 42 and the second circuit board 8 can be realized by the plug-in connector and the plug-in connector. On the basis of the plug-in connection, the second circuit board 8 can also be further connected to the housing 2.

The connection between the second circuit board 8 and the housing 2 may be any connection, for example: a slot may be provided in the housing 2, and the second circuit board 8 may be inserted into the slot of the housing 2.

Since the driving circuit is located at the backlight side of the LED module 4, in one embodiment, the second circuit board 8 may be located at the backlight side of the LED module 4, so that the driving circuit is located at the backlight side of the LED module 4, and in another embodiment, the second circuit board 8 may be partially located at the backlight side of the LED module 4, so that part of the driving circuit is located at the backlight side of the LED module 4, and the other part is located at the light emitting side of the LED module 4, that is, the second circuit board 8 may be disposed through the LED module 4.

Referring to fig. 1 to 8, the LED emergency light bulb may further include a lamp cap 3, and the lamp cap 3 is connected to the second end of the housing 2. The driving circuit can be electrically connected with the lamp holder by using the lamp cap 3 so as to drive the LED module 4 to work by using external power supply.

The shape of the lamp base 3 is understood to be suitable for insertion into a lamp holder, in which a connection circuit can be provided, by means of which the driver circuit is conductively connected to the circuit in the lamp holder. Meanwhile, the structure of the lamp holder and the conduction mode of the connecting circuit and the like can also be adaptively changed according to the structure of the lamp holder and the difference of the circuit, without departing from the scope of the invention.

And the driving circuit can be used for converting external power supply into direct current and driving the LED module 4 to emit light by using the direct current, and the driving circuit can be specifically connected with the LED light source 41 in the LED module 4 so as to drive the LED light source 41 to emit light.

In order to convert the external alternating current into the direct current, the driving circuit may include a rectifying module, which may be a circuit structure for arbitrarily implementing alternating current rectification in the field, wherein in one embodiment, the rectifying module may be a rectifying bridge composed of diodes, and meanwhile, the output side of the rectifying module may be connected in parallel with a first capacitor for stabilizing voltage, and the input side of the rectifying module may also be connected in parallel with a second capacitor for stabilizing voltage.

In order to drive the LED module 4 by using direct current, the driving circuit may include a direct current driving module, which may be any circuit structure in the field for implementing direct current driving. While driving, voltage regulation and voltage and/or current regulation of the LED module 4 can be further performed, so that the LED module 4 can emit light to meet the requirement.

The direct current driving module can be a linear voltage stabilizing circuit or a switch voltage stabilizing circuit.

If the voltage stabilizing driving circuit is a switching voltage stabilizing circuit, the voltage stabilizing driving circuit may include one of the following:

a Buck converter circuit (Buck circuit);

a switched dc BOOST circuit (BOOST circuit);

a Flyback converter circuit.

If the step-down conversion circuit is adopted, the output voltage is lower than the input voltage, and the output current is continuous.

In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", and the like, as used herein, indicate an orientation or positional relationship based on that shown in the drawings, merely to facilitate the description of the invention and to simplify the description, and do not indicate or imply that the position or element referred to must have a particular orientation, be of particular construction and operation, and therefore, should not be considered as limiting the invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; either directly or indirectly through intervening media, such as through internal communication or through an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An LED emergency bulb, comprising: the LED module comprises a shell, an optical cover, an LED module, a driving circuit and a battery; the first end opening of the optical cover is connected with the first end of the shell so as to form an inner cavity in the optical cover and the shell, and the LED module, the driving circuit and the battery are all arranged in the inner cavity; the light emitting side of the LED module faces to the second end of the optical cover; the driving circuit is positioned on the backlight side of the LED module; the battery and the LED module are respectively connected with the driving circuit;

the battery passes through the LED module, and a first end of the battery is positioned at the light-emitting side of the LED module, so that: the battery protrudes out of the light emitting side of the LED module; the length of the battery protruding out of the light emitting side of the LED module is a first length, and the first length is larger than half of the length of the battery.

2. The LED emergency bulb of claim 1, further comprising a battery holder, the battery holder being connected to the LED module, the battery being fixed in position relative to the LED module by the battery holder.

3. The LED emergency bulb of claim 2, wherein the battery holder comprises a holder body and a carrying base, the carrying base is disposed at a bottom of the holder body, the battery is carried on the carrying base, and the holder body is connected to the LED module.

4. The LED emergency light bulb of claim 3, wherein the battery has an outer surface that is partially or entirely reflective.

5. The LED emergency bulb of claim 4, further comprising a battery housing, the battery being disposed within the battery housing, the battery housing being mounted to the battery support.

6. The LED emergency light bulb of claim 5, wherein the battery housing has an outer surface that is partially or entirely reflective.

7. The LED emergency bulb of any one of claims 1 to 6, wherein the LED module comprises a first circuit board and an LED light source, the LED light source is disposed on the first circuit board, and the battery passes through the first circuit board.

8. The LED emergency bulb of claim 7, wherein the LED module includes at least one of the LED light sources disposed about the battery.

9. The LED emergency bulb of claim 8, wherein the battery is perpendicular to the first circuit board.

10. The LED emergency bulb of claim 7, wherein the driving circuit is disposed on a second circuit board, the second circuit board being mounted to the first circuit board and/or the housing.

11. The LED emergency bulb of any one of claims 1 to 6, further comprising a light head connected to the second end of the housing.