CN212537546U - 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 in two way LED filaments in the translucent cover and be used for with two way LED filaments are fixed mounting on the base, moreover, two way LED filaments are in the on-state under the control of some lamp 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, two LED lamp filaments contained in the transparent cover and a fixing piece used for fixing the two LED lamp filaments on the base, and the two LED lamp filaments are alternately in a lighting state under the control of the lighting monitoring control device.

Preferably, each path of LED filament comprises a plurality of connected LED chips.

Preferably, the substrate of the LED chip is a sapphire substrate or a silicon carbide substrate.

Preferably, the LED filament (11, 12) further includes an encapsulation layer integrally covering the plurality of connected LED chips, and positive and negative terminals of the LED filament (11, 12) extend through the encapsulation layer.

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

Preferably, the fixing comprises a bracket.

Preferably, the fixing member further comprises a reinforcing rib provided at a middle portion of the bracket.

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

the above-described LED bulb;

and the lighting monitoring control device is used for controlling the two paths of LED filaments 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 the LED filament, so, compare the tungsten filament bulb, the consumption is littleer, luminance is higher, moreover, two way LED filaments 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 front view of a first embodiment of an LED bulb of a railway signal lamp according to the present invention;

fig. 2 is a schematic bottom structure diagram of a first embodiment of the LED bulb of the railway signal lamp 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 filaments in the LED bulb are in the state of lighting in turn.

Referring to fig. 1 and 2, the LED bulb of this embodiment includes a base 16, a transparent cover 15 connected to the base 16, two LED filaments 11 and 12 accommodated in the transparent cover 15, and a fixing member for fixing the two LED filaments 11 and 12 to the base 16, and the two LED filaments 11 and 12 are alternately turned on under the control of a lighting monitoring control device. The transparent cover 15 may be a glass cover, for example. The fixing member may include a bracket 13 and a reinforcing rib 14 provided at a central portion of the bracket 13.

Through the technical scheme of this embodiment, because the bulb of railway signal lamp adopts LED filament bulb, 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 paths of LED filaments are alternately in a 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, each of the LED filaments 11 and 12 includes a plurality of connected LED chips, and each of the LED chips can be packaged into an LED lamp bead. The multiple LED chips (or LED lamp beads) in each LED filament may be connected in series, in parallel, or in a mixed series-parallel connection, for example, four LED chips are connected in series to form one LED filament. In addition, the substrate of the LED chip can be a sapphire substrate or a silicon carbide substrate, preferably, the sapphire substrate has good heat dissipation performance, and therefore stable operation of the two LED filaments 11 and 12 in a narrow space is ensured.

Further, the LED filaments 11 and 12 further include an encapsulation layer that integrally covers the plurality of LED chips, and positive and negative terminals of the LED filaments 11 and 12 extend out through the encapsulation layer.

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 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 filament 11, 12 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 filament and is connected by the shield wire, the requirement for interference resistance can be better met.

In an alternative embodiment, the driving circuit of the lighting monitoring control device is disposed in the base 16 and connected to the respective positive and negative terminals of the two LED filaments 11, 12.

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 (9)

1. The LED bulb is connected with a lighting monitoring control device of a railway signal lamp, and comprises a base (16) and a transparent cover (15) connected with the base (16), and is characterized by further comprising two LED lamp filaments (11 and 12) accommodated in the transparent cover (15) and a fixing piece used for fixing the two LED lamp filaments (11 and 12) on the base (16), wherein the two LED lamp filaments (11 and 12) are alternately in a lighting state under the control of the lighting monitoring control device.

2. The LED bulb of claim 1, characterized in that each LED filament (11, 12) comprises a plurality of connected LED chips.

3. The LED bulb of claim 2, wherein the substrate of the LED chip is a sapphire substrate or a silicon carbide substrate.

4. The LED bulb according to claim 2, wherein the LED filament (11, 12) further comprises an encapsulation layer integrally covering the plurality of connected LED chips, and wherein positive and negative terminals of the LED filament (11, 12) protrude through the encapsulation layer.

5. The LED bulb according to any one of claims 1 to 4, characterized in that four power terminals for connecting the lighting monitoring control device are provided on the base, and the positive and negative terminals of each LED filament (11, 12) are connected to the respective power terminals through the base (16).

6. The LED bulb of claim 5, wherein the four power terminals are connected to respective outputs of a drive circuit in the lighting monitoring control device by shielded wires.

7. The LED bulb of claim 1, wherein the fixture includes a cradle (13).

8. The LED bulb of claim 7, wherein the fixture further comprises a stiffener (14) disposed in the middle of the cradle (13).

9. A railway signal lamp, comprising:

the LED light bulb of any one of claims 1-8;

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

Images