CN222895101U

CN222895101U - LED bulbs, railway signal lights

Info

Publication number: CN222895101U
Application number: CN202421955332.0U
Authority: CN
Inventors: 杨健荣
Original assignee: Xiamen Ronghuiyuan Technology Co ltd
Current assignee: Xiamen Ronghuiyuan Technology Co ltd
Priority date: 2024-08-13
Filing date: 2024-08-13
Publication date: 2025-05-23
Anticipated expiration: 2034-08-13

Abstract

The application discloses an LED bulb which comprises a radiating body, wherein the radiating body is in a hollow column shape, a radiating channel is arranged in the radiating body, a plurality of radiating fins are arranged on the periphery of the radiating body along the height direction of the radiating body, the LED bulb comprises a light source component, the light source component comprises a substrate arranged on one side face of the radiating body and a transparent cover with an optical angle lens, the transparent cover is covered on the substrate and is provided with at least one LED lamp bead, the LED bulb comprises a fan, the fan is arranged on the radiating body, and air flow driven by the fan at least flows through part of the radiating channel. The application also discloses a railway signal lamp applying the LED bulb. The LED bulb is provided with the radiator, the radiating channel and the fan, heat generated by the light source component during working is transferred to the radiator, the heat is radiated through the radiating channel, and the air flow driven by the fan flows through the radiating channel to accelerate the radiating efficiency, so that the LED bulb has excellent radiating performance and avoids faults caused by overheating in extreme weather.

Description

LED bulb and railway signal lamp

Technical Field

The application relates to the field of signal lamps, in particular to an LED bulb and a railway signal lamp with the LED bulb.

Background

The road traffic signal lamp is one kind of traffic safety products, and is an important tool for strengthening road traffic management, reducing traffic accidents, improving road use efficiency and improving traffic conditions. The railway signal lamp is one of the road traffic signal lamps, and plays a very important role in the safety running of trains and the personal safety of people along the railway. The traditional railway signal lamp adopts a bulb taking tungsten wire as a light source, the tungsten wire bulb of the railway signal lamp generally works at 12V voltage, the power is 25W, the luminous flux is 400 lumens (theoretically), and the tungsten wire bulb is special for controlling a railway signal system.

In recent years, as a new type of light source which is developed rapidly, the LED light source has the advantages of low power consumption, high brightness, small volume, light weight, long service life and the like. In addition, when the LED light source is applied to the railway signal lamp, the problem that serious light decay and lamp death easily occur when the LED works in a high-temperature environment needs to be fundamentally solved, so that an LED bulb which can be applied to the railway signal lamp and has excellent heat dissipation performance needs to be developed.

Disclosure of utility model

The application aims to solve the technical problem of providing an LED bulb with excellent heat dissipation performance.

The technical scheme adopted by the application for solving the technical problems is that the LED bulb comprises:

The heat radiation body is in a column shape with a hollow inside, a heat radiation channel is arranged in the heat radiation body, and a plurality of heat radiation fins arranged along the height direction of the heat radiation body are arranged on the periphery of the heat radiation body;

The light source assembly comprises a substrate arranged on one side surface of the heat radiation body and a transparent cover with an optical angle lens, wherein the transparent cover is covered on the substrate, and at least one LED lamp bead is arranged on the substrate;

The fan is arranged on the heat radiation body, and air flow driven by the fan at least flows through part of the heat radiation channels.

In some embodiments of the present application, the heat dissipation channel is provided with an air inlet and an air outlet, and the fan is disposed at the air inlet.

In some embodiments of the present application, the heat dissipation channel is provided with a plurality of air outlets, the air outlets are formed on the side wall of the heat dissipation body, and the air outlets are located between the heat dissipation fins.

In some embodiments of the present application, two LED lamp sets are disposed on the substrate, and each LED lamp set includes at least one LED lamp bead.

In some embodiments of the application, the heat sink includes a body and a base connected to the body;

A plane is arranged on one side face of the main body, and the base plate is detachably arranged on the plane through a fastener.

In some embodiments of the present application, the base forms a positive power input terminal, two negative power input terminals are further provided at the bottom of the base, and the positive terminal and the negative terminal of each LED lamp group are connected to the corresponding positive power input terminal and negative power input terminal.

In some embodiments of the application, the transparent cover comprises a first part covering the fastener and a second part connected with the first part and covering the periphery of the LED lamp bead;

the second part is an optical angle lens with a surrounding structure of which the outer side is convex and the middle is concave in a circumference ring and the inner side is a hemispherical cavity.

In some embodiments of the application, the fastener comprises a bolt, screw, rivet, or cylindrical pin.

In some embodiments of the application, the heat sink is made of aluminum alloy.

In addition, the application also provides a railway signal lamp, which comprises the LED bulb and a control device for controlling the LED bulb.

The LED bulb has the advantages of low power consumption, high brightness, long service life, vibration resistance, light concentration and long illumination distance due to the adoption of the LED light source, meanwhile, the LED bulb is provided with the radiator, the light source component and the fan are arranged on the radiator, the radiating channel is arranged in the radiator, the air flow driven by the fan at least flows through part of the radiating channel, the radiating fin is arranged outside the radiator, the radiating area of the radiating channel and the radiating fin can be increased, heat generated by the light source component during operation is transferred to the radiator, the heat is radiated through the radiating channel and the radiating fin, the air flow driven by the fan flows through the radiating channel, the heat radiation is improved to the greatest extent, the product quality in a narrow space is ensured to be stable, and faults caused by overheating in extreme weather are avoided.

Drawings

The application will be further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic structural view of an LED bulb provided by the present application;

FIG. 2 is a front view of the LED bulb shown in FIG. 1;

fig. 3 is a cross-sectional view taken along line A-A in fig. 2.

Reference numerals illustrate:

Radiator 100, main body 110, radiating fin 111, base 120, positive power input terminal 121, negative power input terminal 122, radiating channel 130, air inlet 131 and air outlet 132;

The light source assembly 200, a substrate 210, a first LED lamp group 211, a second LED lamp group 212, a transparent cover 220, an optical angle lens 221, a first bolt 230, and a second bolt 240;

Fan 300, mount 310.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present application, a detailed description of embodiments of the present application will be made with reference to the accompanying drawings.

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, chemically connected, directly connected, indirectly connected via an intermediate medium, or in communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art in a specific case.

Referring to fig. 1-3, some embodiments of the present application disclose an LED light bulb.

As shown in fig. 1 to 3, the LED bulb provided by the present application includes a heat sink 100, a light source assembly 200, and a fan 300. The heat sink 100 is a hollow column, a heat dissipation channel 130 is disposed in the heat sink 100, a plurality of heat dissipation fins 111 are disposed along the height direction of the heat sink 100, the light source assembly 200 includes a substrate 210 disposed on one side of the heat sink 100, and a transparent cover 220 covering the substrate 210 and having an optical angle lens 221, at least one LED light bead is disposed on the substrate 210, a fan 300 is disposed on the heat sink 100, and an air flow driven by the fan 300 at least flows through a portion of the heat dissipation channel 130. The application directly sets the substrate 210 on the light source assembly 200 on the radiator 100, the heat generated by the substrate 210 and the LED lamp beads set on the substrate 210 during operation is directly conducted to the radiator 100, the radiator 100 and the radiating fins 111 radiate heat, the radiating efficiency is improved, the radiating channel 130 is arranged in the radiator 100, and the air flow driven by the fan 300 during operation at least flows through part of the radiating channel 130, so that the radiating efficiency is further improved, the LED lamp bulb has excellent radiating performance, and the faults caused by overheating in extreme weather are avoided.

In some embodiments, the heat sink 100 is made of a metal with good heat conductivity, such as copper, iron, aluminum, or an alloy material of the foregoing metals, preferably an aluminum alloy, which has good heat dissipation performance, ensures high heat dissipation of the heat sink 100, and has the advantages of high hardness and light weight. In addition, the substrate 210 may be one of a copper substrate and an aluminum substrate, and preferably is a copper substrate with better conductivity.

In some embodiments, as shown in fig. 1 and 3, the heat sink 100 includes a main body 110 and a base 120 connected to the main body 110, one side of the main body 110 is provided with a plane, a substrate 210 is detachably mounted on the plane by a fastener, and a heat sink 111 is integrally provided on the main body 110. The main body 110 and the base 120 may be integrally formed, and the main body 110 and the base 120 may be two independent parts, which are combined together to form the heat sink 100.

Further, the fastener for fixing the base plate 210 may be at least one of a bolt, a screw, a rivet, or a cylindrical pin. In an exemplary embodiment provided by the present application, as shown in fig. 3, the substrate 210 is fixed on the plane of the main body 110 using the first bolts 230.

In some embodiments, as shown in fig. 3, the heat dissipation channel 130 is provided with an air inlet 131 and an air outlet 132, and the fan 300 is located at the air inlet 131 of the heat dissipation channel 130. The fan 300 is disposed at the air inlet 131, so that the fan 300 drives the external air flow to flow through the heat dissipation channel 130 to the greatest extent, thereby improving the heat dissipation efficiency. Further, as shown in fig. 1 to 3, in the present embodiment, a mounting seat 310 is provided at the top of the main body 110, the mounting seat 310 may be integrally formed with the main body 110, and the mounting seat 310 is located at the air inlet 131 of the heat dissipation channel 130, and the fan 300 is mounted and fixed on the mounting seat 310 by a fastener.

In some embodiments, as shown in fig. 3, in order to improve the heat dissipation efficiency, the heat dissipation channel 130 is provided with a plurality of air outlets 132, the air outlets 132 are formed on the side wall of the main body 110, and the air outlets 132 are located between the heat dissipation fins 111, when the air flow driven by the fan 300 flows out through the air outlets 132, the heat dissipation fins 111 are simultaneously cooled, and the area of the air flow contacting the heat dissipation body 100 can be effectively improved by arranging the plurality of air outlets 132, so that the heat on the heat dissipation body 100 is better taken away by the air flow, and the heat dissipation efficiency is effectively improved.

In some embodiments, the fan 300 and the light source assembly 200 work synchronously, and when the LED lamp beads on the light source assembly 200 are lighted, the fan 300 is started to radiate heat, so that the heat radiation efficiency is improved.

In some embodiments, as shown in fig. 3, two LED lamp sets are disposed on the substrate 210, where the two LED lamp sets include a first LED lamp set 211 and a second LED lamp set 212, and each LED lamp set includes at least one LED lamp bead. Preferably, the first LED lamp set 211 and the second LED lamp set 212 adopt LED lamp beads with the same brightness, and are provided with two paths of LED lamp sets of the first LED lamp set 211 and the second LED lamp set 212, and the first LED lamp set 211 and the second LED lamp set 212 can be controlled to switch and alternately operate according to the needs by matching with corresponding control circuits, so that the single path of LED lamp set is prevented from working for a long time, the failure rate of the LED lamp set is reduced, the reliability is high, and the safety requirement is met. It will be readily appreciated that in some embodiments, two sets of LED light sets, a first set 211 and a second set 212, are employed, being backup sets to each other in the event of a failure, ensuring that the safety requirements of the railway signal control system are met.

In some embodiments, as shown in fig. 2 and 3, for convenience in connection with power supply, a positive power supply input terminal 121 may be formed on the periphery of the base 120, two negative power supply input terminals 122 are disposed at the bottom of the base 120, and the positive and negative terminals of each LED lamp group are connected to the corresponding positive power supply input terminal 121 and negative power supply input terminal 122. It should be noted that, the base 120 of the present application is identical to the old tungsten filament bulb in structure, size and position of the positive and negative input terminals, so that compatibility of the LED bulb of the present application can be improved, under the condition of original bulb mounting seat and outer cover, the old tungsten filament bulb is directly replaced by the LED bulb of the present application, and the old tungsten filament bulb is removed from the original bulb mounting seat first, and meanwhile, the base 120 of the LED bulb of the present application is inserted into or screwed into the corresponding bulb mounting seat, so that the LED bulb can be connected with a power supply for use, and installation is convenient and update cost is greatly reduced.

In some embodiments, as shown in fig. 3, the transparent cover 220 includes a first portion covering the first bolt 230, and a second portion connected to the first portion and covering the outer periphery of the LED lamp bead. The junction of the first and second parts is closely attached to the substrate 210, and the transparent cover 220 and the substrate 210 are simultaneously fixed to the main body 110 by the second bolts 240. The LED bulb adopts the optical angle lens 221 with the structure, fully exerts the luminous characteristic of an LED bulb, can be organically combined with a Fresnel lens system of the existing railway signal lamp, furthest reduces the updating cost, solves the problem of the focusing point of light with a double-loop structure, greatly improves the light efficiency, and achieves the optimal illuminance due to the fact that the luminous column emitted by the LED bulb is round and full by adopting the optical structure compared with the traditional tungsten filament bulb.

The LED bulb has the advantages of low power consumption, high brightness, long service life, vibration resistance, light concentration and long illumination distance due to the adoption of the LED light source, meanwhile, the LED bulb is provided with the radiator 100, the light source component 200 and the fan 300 are arranged on the radiator 100, the radiating channel 130 is arranged in the radiator 100, the air flow driven by the fan 300 at least flows through part of the radiating channel 130, the radiating fin 111 is arranged outside the radiator 100, the heat generated when the light source component 200 works is transferred to the radiator 100, the heat is radiated through the radiating channel 130 and the radiating fin 111, the heat radiation efficiency is further accelerated due to the fact that the air flow driven by the fan 300 flows through the radiating channel 130, and therefore the LED bulb has excellent radiating performance and avoids faults caused by extreme climate overheating.

In addition, the application also provides a railway signal lamp, which comprises the LED bulb in any embodiment and a control device for controlling the LED bulb. The control device and the LED bulb are arranged separately, and the control device and the LED bulb are electrically connected by adopting a shielding circuit, so that the anti-interference performance of the circuit is improved, and safety accidents such as lighting or dead lamp caused by interference of electromagnetic radiation, lightning stroke and the like to the circuit are avoided.

Further, in some embodiments, in order to better control the first LED lamp set 211 and the second LED lamp set 212 in the LED bulb, a control circuit for controlling the first LED lamp set 211 and the second LED lamp set 212 to operate alternately is included in the control device in the railway signal lamp.

It is to be understood that the foregoing examples merely illustrate preferred embodiments of the present application, and the description thereof is more specific and detailed and not to be construed as limiting the scope of the application, and it is to be understood that it is possible for those skilled in the art to freely combine the above-described embodiments or technical features without departing from the spirit of the application, and that several modifications and improvements may be made thereto, namely, the embodiments described in the "embodiments" may be freely combined with any one of the above and below embodiments, and that all equivalent changes and modifications as following the scope of the claims of the application shall fall within the scope of the claims of the application.

Claims

1. An LED light bulb, comprising:

A heat sink (100), the heat sink (100) being in the shape of a column with a hollow interior, a heat dissipation channel (130) being provided inside the heat sink (100), and a plurality of heat sinks (111) being arranged along a height direction of the heat sink (100);

A light source assembly (200) comprises a substrate (210) arranged on a side of the heat sink (100), and a transparent cover (220) with an optical angle lens (221) covering the substrate (210), wherein at least one LED lamp bead is arranged on the substrate (210);

A fan (300) is installed on the heat sink (100), and the airflow driven by the fan (300) flows through at least a portion of the heat dissipation channel (130).

2. The LED light bulb according to claim 1, characterized in that an air inlet (131) and an air outlet (132) are provided on the heat dissipation channel (130), and the fan (300) is arranged at the air inlet (131).

3. The LED light bulb according to claim 2, characterized in that a plurality of air outlets (132) are provided on the heat dissipation channel (130), the air outlets (132) are opened on the side wall of the heat dissipation body (100) and the air outlets (132) are located between the heat dissipation fins (111).

4. The LED light bulb according to claim 1, characterized in that two LED light groups are arranged on the substrate (210), and each LED light group includes at least one LED lamp bead.

5. The LED light bulb according to claim 4, characterized in that the heat sink (100) comprises a main body (110) and a base (120) connected to the main body (110);

A plane is provided on one side of the main body (110), and the base plate (210) is detachably mounted on the plane via a fastener.

6. The LED light bulb according to claim 5 is characterized in that the base (120) forms a positive power input terminal (121), and two negative power input terminals (122) are also provided at the bottom of the base (120), and the positive and negative ends of each LED light group are connected to the corresponding positive power input terminal (121) and negative power input terminal (122).

7. The LED light bulb according to claim 5, characterized in that the transparent cover (220) comprises a first part covering the fastener, and a second part connected to the first part and covering the periphery of the LED lamp bead;

The second part is an optical angle lens (221) with a surrounding structure that is convex on the outside and concave in the middle, and a semi-spherical cavity on the inside.

8. The LED bulb according to claim 5 or 7, characterized in that the fastener comprises a bolt, a screw, a rivet or a cylindrical pin.

9. The LED light bulb according to claim 1, characterized in that the heat sink (100) is made of aluminum alloy.

10. A railway signal light, characterized by comprising the LED bulb according to any one of claims 1 to 9, and a control device for controlling the LED bulb.