CN212537547U - Railway signal lamp and LED bulb thereof - Google Patents

Abstract

The utility model relates to a railway signal lamp and LED bulb thereof, this LED bulb include the base and with the translucent cover that the base is connected, still include the holding PCB board in the translucent cover and setting are in two way LED banks on the PCB board, every way LED bank includes at least one LED lamp pearl, moreover, two way LED banks are in the light state under the control of light monitoring control device in turn. Implement the technical scheme of the utility model, low power dissipation, luminance are high, and longe-lived.

Description

Railway signal lamp and LED bulb thereof

Technical Field

The utility model relates to a railway signal lamp field especially relates to a railway signal lamp and LED bulb thereof.

Background

At present, tungsten filament bulbs are generally adopted as bulbs of railway signal lamps, but the traditional tungsten filament bulbs have the following problems: (1) the power consumption is high, and is generally 25W; (2) the brightness is low, and the luminous flux is generally 400 lumens; (3) the working modes of the two tungsten filaments are as follows: the main tungsten filament works for a long time, and the operation of the auxiliary tungsten filament is switched to only when the main tungsten filament or the lighting unit circuit thereof has a fault, so that the fault rate is high, the service life is short, and in addition, a professional technician is required to regularly go to the site for detection.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the defect that the consumption is high, luminance is low, the life-span is short that prior art exists, provide a railway signal lamp and LED bulb thereof.

The utility model provides a technical scheme that its technical problem adopted is: the LED bulb is connected with a lighting monitoring control device of a railway signal lamp, comprises a base, a transparent cover connected with the base, a PCB accommodated in the transparent cover and two LED lamp sets arranged on the PCB, wherein each LED lamp set comprises at least one LED lamp bead, and the two LED lamp sets are alternately in a lighting state under the control of the lighting monitoring control device.

Preferably, the LED lamp bead comprises at least one LED chip, and a substrate of the LED chip is a sapphire substrate or a silicon carbide substrate.

Preferably, the PCB board is a ceramic substrate.

Preferably, the ceramic substrate is an aluminum nitride ceramic substrate or an aluminum oxide ceramic substrate.

Preferably, the PCB further comprises a heat conducting piece attached to the PCB.

Preferably, the heat conducting member is an elongated aluminum block, and one end of the aluminum block extends into the base.

Preferably, the PCB board is fixed to the aluminum block by at least two compression screws.

Preferably, the base is provided with four power supply terminals for connecting the lighting monitoring control device, and the positive terminal and the negative terminal of each path of LED lamp set penetrate through the base to be connected with the corresponding power supply terminals.

Preferably, the four power supply terminals are connected to respective output terminals of a driving circuit in the lighting monitoring control device through shielded wires.

The utility model discloses still construct a railway signal lamp, a serial communication port, include:

the above-described LED bulb;

and the lighting monitoring control device is used for controlling the two LED lamp groups in the LED bulb to be in a lighting state alternately.

Implement the technical scheme of the utility model, because the bulb of railway signal lamp adopts LED lamp pearl, so, compare the tungsten filament bulb, the consumption is littleer, luminance is higher, moreover, two way LED banks are in the state of lighting in turn, have reduced the fault rate, have prolonged life.

Drawings

In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive work. In the drawings:

fig. 1 is a schematic sectional view of an LED bulb according to a first embodiment of the present invention along a direction;

fig. 2 is a schematic cross-sectional view of the LED bulb according to the first embodiment of the present invention along another direction;

fig. 3 is a bottom schematic view of the LED bulb according to the first embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model discloses construct a railway signal lamp, it includes the LED bulb and lights a lamp monitoring control device, and should light a lamp monitoring control device and be used for control two way LED banks in the LED bulb are in the state of lighting a lamp in turn.

With reference to fig. 1, 2, and 3, the LED bulb of this embodiment includes a base 16, a transparent cover 15 connected to the base 16, a PCB 13 accommodated in the transparent cover 15, and two LED lamp sets disposed on the PCB 13, where each LED lamp set includes at least one LED lamp bead 11 and 12, and the two LED lamp sets are alternately in a lighting state under the control of a lighting monitoring control device. The transparent cover 15 may be a glass cover, for example.

Through the technical scheme of this embodiment, because the bulb of railway signal lamp adopts LED lamp pearl, so compare the tungsten filament bulb, have following beneficial technological effect:

1. the power consumption is small, and when the input voltage is 12V, the power of each path is 4W;

2. the brightness is high, and the output luminous flux of each path is more than 400 lumens;

3. the two LED lamp groups are alternately in the lighting state, so that the failure rate is reduced, and the service life is prolonged.

In addition, the LED bulb and the tungsten filament bulb of the old LTX-25 can be kept consistent in overall dimension, the lamp cap and the tungsten filament bulb of the old LTX-25 are consistent, and the distance between the LED filament and the bottom of the bulb is kept the original distance. Therefore, under the condition of keeping the original base and outer cover, the tungsten filament bulb of the old LTX-25 can be directly replaced, the better working efficiency is achieved, and the replacement cost is greatly reduced.

Further, the LED lamp beads comprise at least one LED chip, the substrate of the LED chip is a sapphire substrate or a silicon carbide substrate, the sapphire substrate is preferred, and the heat dissipation performance is good, so that stable work of the two LED lamp groups is guaranteed.

Further, the PCB 13 is a ceramic substrate, and may be an aluminum nitride ceramic substrate or an aluminum oxide ceramic substrate. The ceramic substrate has the following advantages: strong mechanical stress and stable shape; high strength, high thermal conductivity and high insulating property.

Further, the LED bulb further includes a heat conducting member attached to the PCB 13, preferably, the heat conducting member is an elongated aluminum block 14, and one end of the aluminum block 14 extends into the base 16, and the PCB 13 is fixed on the aluminum block 14 by two compression screws 21 and 22, although in other embodiments, the number of the compression screws 21 and 22 may be greater than two. In this embodiment, can be with the heat conduction that the LED banks distributed out to the base in through the aluminium pig to ensure that two way LED banks stably work in narrow and small space.

In addition, because the railway signal lamp is installed on the railway side, the railway signal lamp is very easily influenced by lightning stroke, electromagnetic radiation and the like, in order to ensure safety, the railway signal lamp must have extremely strong anti-interference capabilities of lightning stroke resistance, electromagnetic radiation resistance and the like, and the LED product has poor anti-interference capabilities of lightning stroke resistance, electromagnetic radiation resistance and the like. Therefore, in an alternative embodiment, the driving circuit may be disposed outside the base, and the base 16 is provided with four power terminals 17, 18, 19, 20 for connecting the lighting monitoring control device, and the positive and negative terminals of each LED lamp set are connected to the corresponding power terminals through the base 16. Preferably, the four power supply terminals 17, 18, 19, 20 are connected to respective outputs of the drive circuit in the lighting monitoring control device through shielded wires. In this embodiment, since the driving circuit in the lighting monitoring and controlling device is provided separately from the LED lamp group and is connected by the shield wire, the requirement for interference resistance can be better met.

In an alternative embodiment, the driving circuit in the lighting monitoring control device may be disposed in the base 16 and connected to the positive and negative terminals of the two LED lamp sets 11 and 12, respectively.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any tampering, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a LED bulb, is connected with the monitoring control device that lights a lamp of railway signal lamp, the LED bulb include base (16) and with translucent cover (15) that base (16) are connected, its characterized in that still include holding in PCB board (13) in translucent cover (15) and set up two way LED banks on PCB board (13), every way LED bank includes at least one LED lamp pearl (11, 12), moreover, two way LED banks are in the state of lighting a lamp under the control of monitoring control device alternately.

2. The LED bulb of claim 1, wherein the LED bead comprises at least one LED chip, and the substrate of the LED chip is a sapphire substrate or a silicon carbide substrate.

3. The LED bulb according to claim 1, characterized in that the PCB board (13) is a ceramic substrate.

4. The LED bulb of claim 3, wherein the ceramic substrate is an aluminum nitride ceramic substrate or an aluminum oxide ceramic substrate.

5. The LED bulb of claim 1, further comprising a thermal conductor disposed in close proximity to the PCB board (13).

6. The LED bulb of claim 5, wherein the thermal conductor is an elongated aluminum block (14), and one end of the aluminum block (14) extends into the base (16).

7. The LED bulb according to claim 6, characterized in that the PCB board (13) is fixed to the aluminum block (14) by at least two compression screws (21, 22).

8. The LED bulb according to any one of claims 1 to 7, wherein four power terminals for connecting the lighting monitoring control device are provided on the base, and the positive and negative terminals of each LED lamp group are connected to the respective power terminals through the base (16).

9. The LED bulb of claim 8, wherein the four power terminals are connected to respective outputs of a drive circuit in the lighting monitoring control device by shielded wires.

10. A railway signal lamp, comprising:

the LED bulb of any one of claims 1-9;

and the lighting monitoring control device is used for controlling the two LED lamp groups in the LED bulb to be in a lighting state alternately.

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