Single-layer three-color alarm lamp convenient to adjust

By designing a single-layer three-color alarm light for easy adjustment, the combination of adapter lamp holder and change color LED lamp beads solves the problem of fixed height and small luminous area of ​​traditional alarm lights, achieving flexible adjustment of height and angle and improving warning effect.

CN222895083UActive Publication Date: 2025-05-23GUANGDONG LECHUANG PRECISION IND CO LTD
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Patent Information

Application Number
CN202421927306.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-09
Publication Date
2025-05-23
Estimated Expiration
2034-08-09

AI Technical Summary

Technical Problem

The height of the traditional three-color alarm light is fixed and difficult to adjust, resulting in the inability to transport and install normally in places with limited heights, and the luminous area is small, affecting the warning effect.

Method used

A single-layer three-color alarm light is designed for easy adjustment, and adopts a combined structure of the luminous lamp body and the adapter lamp base. Through the rotation characteristics of the adapter lamp base, the height and angle of the alarm lamp are adjusted, and a changeable LED lamp bead and buzzer are installed inside the luminous lamp body to increase the luminous area and warning effect.

Benefits of technology

It realizes flexible adjustment of the height and angle of the alarm light, adapts to the installation needs of different places, increases the luminous area, improves the warning effect, and avoids the difficulty of transporting and installing traditional alarm lights in places with limited heights.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of alarm lamps for production lines, in particular to a single-layer three-color alarm lamp convenient to adjust, which comprises a light-emitting lamp body and a switching lamp holder, one end of the switching lamp holder is fixedly connected to the light-emitting lamp body, and the other end of the switching lamp holder is used for mounting the alarm lamp on an external production support. The switching lamp holder is provided with a first shell and a second shell which are rotationally connected with each other around a central shaft, the first shell is provided with a first switching column, one end of the first switching column is fixedly connected to the first shell, and the other end of the first switching column is fixedly connected to the light-emitting lamp body; the second shell is provided with a second adapter column, one end of the second adapter column is fixedly connected to the second shell, and the other end of the second adapter column is used for being fixedly connected with an external production support. In conclusion, the alarm lamp is installed on an external production support, the height and angle can be adjusted, transportation is convenient, and the angle can be adjusted according to the field environment. The light-emitting area is enlarged, single-layer overall light emitting and color changing are achieved, the light-emitting efficiency is improved, and the warning effect is enhanced.
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Description

Technical Field

[0001] The utility model relates to the technical field of warning lamps used in production lines, in particular to a single-layer three-color warning lamp which is easy to adjust. Background Art

[0002] The three-color alarm light is a commonly used alarm light on production lines such as machine tools and racks. It consists of yellow, green and red. The green light represents normal operation, the yellow light represents standby status, and the red light represents a fault. Since the height of the warning light is basically similar, usually when the height remains unchanged, the lamp of this height is divided into three equal parts of yellow, green and red. Each color area will be shortened accordingly. In order to make the light-emitting areas of different colors easier to be found, it is usually necessary to increase the height of the entire alarm light. And because the alarm light is usually installed at the top of the machine tool or rack, it is easy to cause the overall height to exceed the height of some handling places. For example, the height of the elevator door, which can easily cause damage to the alarm light during the handling process.

[0003] The alarm lights currently on the market are generally fixedly installed on the top surface of the equipment casing, and require cumbersome operations to remove them. In addition, traditional alarm lights generally have a certain height. If the equipment encounters a place with limited height (such as elevator doors, workshop doors, containers and truck compartments), the equipment cannot be transported in, which will cause certain troubles to personnel.

[0004] Many researchers have noticed the above problems and proposed some solutions. For example, the Chinese patent document with the announcement number CN210831737U discloses a three-color alarm light that is easy to install and disassemble, including a housing and an alarm light, the alarm light is movably connected to the housing, the housing is movably connected to a lower chassis, the alarm light mounting end is movably connected to an upper chassis, the lower chassis and the upper chassis are respectively fixedly connected with corresponding lower mounting parts and upper mounting parts, the lower chassis and the middle part of the upper chassis are movably connected with a power supply mechanism for maintaining the alarm light in a working state, the power supply mechanism includes a power-on spring pin and an annular power-on disk respectively fixed to the lower chassis and the upper chassis, and the annular power-on disk is in close contact with the power-on spring pin.

[0005] Although the above solution adopts the connection method between the upper chassis and the lower chassis to facilitate installation and disassembly, it still does not fundamentally solve the problems encountered by the traditional three-color warning light, such as the relatively small luminous area and the inconvenience of height adjustment. Utility Model Content

[0006] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.

[0007] The utility model provides a single-layer three-color alarm lamp which is easy to adjust, comprising a light-emitting lamp body and an adapter lamp holder, wherein the light-emitting lamp body is used to emit an alarm light, one end of the adapter lamp holder is fixedly connected to the light-emitting lamp body, and the other end thereof is used to install the alarm light on an external production bracket; the adapter lamp holder is provided with a first shell and a second shell which are rotatably connected to each other around a central axis, the first shell is provided with a first adapter column, one end of the first adapter column is fixedly connected to the first shell, and the other end thereof is fixedly connected to the light-emitting lamp body; the second shell is provided with a second adapter column, one end of the second adapter column is fixedly connected to the second shell, and the other end thereof is used to be fixedly connected to the external production bracket.

[0008] As a further solution of the utility model: the outer wall of the second adapter column is provided with a snap-on convex strip, and the snap-on convex strip can assist the second adapter column to be fixed to an external production bracket, or assist in the installation of an external snap-on accessory.

[0009] As a further solution of the utility model: a buzzer is also provided inside the light emitting lamp body, and the buzzer is electrically connected to an external control component, so that a sound alarm prompt is given under the control of the external control component.

[0010] As a further solution of the utility model: a plurality of groups of positioning ridges are provided on the circumference of the outer wall of the second shell, and the positioning ridges are fixedly connected to the outer wall of the second shell; the first shell is provided with two limiting ridges corresponding to the positions of the positioning ridges, and the two limiting ridges are fixedly connected to the first shell and are arranged at a certain distance from each other, thereby forming limiting grooves between each other, and the first shell rotates around the second shell so that the positioning ridges can be stuck in the limiting grooves, thereby making the first shell form a folded state at a preset angle relative to the second shell.

[0011] As a further solution of the utility model: the multiple groups of positioning ridges are provided with a first ridge, a second ridge and a third ridge, the first ridge and the second adapter column form a 90-degree angle with the central axis of the second shell as the vertex, the second ridge and the second adapter column form a 180-degree angle with the central axis of the second shell as the vertex, and the third ridge and the second adapter column form a 270-degree angle with the central axis of the second shell as the vertex.

[0012] As a further solution of the utility model: the first shell is provided with a bolt hole, and the second shell is provided with a nut hole, and the bolt hole and the nut hole are coaxially arranged with each other, so that the first shell and the second shell can be rotatably connected by bolts.

[0013] As a further solution of the utility model: an inner ring is provided at one end of the side wall of the first shell close to the second shell, and an outer ring is provided at one end of the side wall of the second shell close to the first shell. The inner ring and the outer ring cooperate with each other to form a rotatable embedded connection between the first shell and the second shell.

[0014] As a further solution of the utility model: reinforcing ribs are provided inside the first shell, and the reinforcing ribs are respectively fixed to the side walls and the top wall of the first shell. A wire groove is provided at a position of the reinforcing rib close to the side wall of the first shell, and the wire groove is used to accommodate the power cable of the light-emitting lamp body.

[0015] As a further solution of the utility model: the light emitting lamp body is provided with a light group with variable colors, and the lights of different colors emitted by the light group are all irradiated from the same position of the light emitting lamp body.

[0016] As a further solution of the utility model: the lamp group is provided with color-changing LED lamp beads, and the LED lamp beads can emit green, yellow and red lights respectively.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. By setting up an adapter lamp holder, it can be connected between the light-emitting lamp body and the external production bracket respectively, so that the light-emitting lamp body can be rotated accordingly according to the rotation characteristics of the adapter lamp holder, which can change the height of the alarm light and the folding direction of the alarm light, so that it can be adjusted accordingly according to the actual use scenario according to the on-site conditions.

[0019] 2. A buckle convex strip can also be provided on the second adapter column so that it can be more firmly connected to the external production bracket. At the same time, the buckle convex strip can also be used to install external universal buckle accessories, such as installing a dark wire box.

[0020] 3. Two limiting protrusions can be provided on the first shell to form a limiting groove, and a positioning convex strip can be provided on the second shell. By using the cooperation between the positioning convex strip and the limiting groove, the first shell and the second shell that rotate with each other can be positioned and limited, so that they can form a relatively stable folded state. The light-emitting lamp body can be rotated relative to the second adapter column by a preset angle.

[0021] 4. The light-emitting lamp body can also be set to emit light as a whole and change color as a whole, thus avoiding the problem of too small light-emitting area of ​​the traditional three-color alarm light. At the same time, the three-color change can also be achieved by using color-changing LED lamp beads.

[0022] Therefore, after the above improvements, the utility model can provide a single-layer three-color warning light that is easy to adjust, so that after the warning light is installed on the external production bracket, the height and angle can be adjusted, making it easy to transport, and the angle can be adjusted according to the on-site environment. In addition, the luminous area is increased, the single-layer overall luminescence and color change are achieved, the luminous efficiency is improved, and the warning effect is enhanced.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a structural schematic diagram of the light-emitting lamp body and the adapter lamp holder of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the first shell and the second shell of the utility model;

[0027] Figure 3 It is a structural schematic diagram of the limiting protrusion and the limiting groove of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the positioning convex strip of the utility model;

[0029] Figure 5 It is a structural schematic diagram of the inner ring and the outer ring of the utility model;

[0030] Figure 6 This is a schematic diagram of the first use state of the light emitting lamp body of the utility model;

[0031] Figure 7 This is a schematic diagram of the second use state of the light emitting lamp body of the utility model;

[0032] Figure 8 This is a schematic diagram of a third use state of the light emitting lamp body of the utility model.

[0033] The reference numerals and names in the figures are as follows:

[0034] 10 light-emitting lamp body; 20 adapter lamp holder; 30 first shell body; 31 limiting protrusion; 32 limiting groove; 33 bolt hole; 34 inner ring; 35 reinforcing rib; 36 wire groove; 37 first adapter column; 40 second shell body; 41 positioning convex strip; 42 first convex strip; 43 second convex strip; 44 third convex strip; 45 nut hole; 46 outer ring; 47 second adapter column; 48 snap-on convex strip; 50 production bracket. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figures 1 to 8 In an embodiment of the utility model, a single-layer three-color alarm lamp that is easy to adjust includes a light-emitting lamp body 10 and an adapter lamp holder 20. The light-emitting lamp body 10 is used to emit an alarm light. One end of the adapter lamp holder 20 is fixedly connected to the light-emitting lamp body 10, and the other end thereof is used to install the alarm light on an external production bracket 50; the adapter lamp holder 20 is provided with a first shell 30 and a second shell 40 that are rotatably connected to each other around a central axis, the first shell 30 is provided with a first adapter column 37, one end of the first adapter column 37 is fixedly connected to the first shell 30, and the other end thereof is fixedly connected to the light-emitting lamp body 10; the second shell 40 is provided with a second adapter column 47, one end of the second adapter column 47 is fixedly connected to the second shell 40, and the other end thereof is used to fix the external production bracket 50.

[0037] Specifically, if Figure 6 As shown, the alarm light is usually installed on the top of the production bracket 50, which easily causes the overall height to exceed the height of some handling places. For example, the height of the elevator door, which easily causes damage to the alarm light during the handling process. Therefore, the utility model sets an adapter lamp holder 20 so that it can be connected between the light-emitting lamp body 10 and the external production bracket 50 respectively, so that the light-emitting lamp body 10 can be rotated accordingly according to the rotation characteristics of the adapter lamp holder 20, which can change the height of the alarm light and the folding direction of the alarm light, so that it can be adjusted accordingly according to the actual use scenario according to the on-site conditions.

[0038] For example, it can be achieved Figure 7 and Figure 8 The folded state at another angle shown can not only conveniently adjust the height of the warning light to avoid being restricted by the height of some height-restricted places, but also change the bending angle of the warning light so that it can be adjusted according to the actual usage scenario, and the staff can more easily find the light of the warning light.

[0039] like Figure 1 , Figure 2 and Figure 4 As shown, preferably, the outer wall of the second adapter column 47 is provided with a snap-on convex strip 48, and the snap-on convex strip 48 can assist the second adapter column 47 to be fixed to the external production bracket 50, or assist in installing external snap-on accessories. Four groups of snap-on convex strips 48 are evenly distributed on the circumference of the outer wall of the second adapter column 47.

[0040] Specifically, for example, the buckle convex strip 48 can be used to install a dark wire box, so as to place and store the power cable of the alarm light. In some more special usage scenarios, the buckle convex strip 48 can also be used to change the installation position of the alarm light. That is, as long as the part can be buckled with the buckle convex strip 48, the alarm light can be installed. The second adapter column 47 can also be firmly installed on the external production bracket 50 by using four groups of buckle convex strips 48, that is, the four groups of buckle convex strips 48 are arranged opposite to each other, so as to form a cross-shaped protrusion on the overall outer wall of the second adapter column 47, and then the second adapter column 47 is firmly installed on the external production bracket 50.

[0041] like Figures 2 to 4 As shown, preferably, a plurality of groups of positioning ridges 41 are provided on the circumference of the outer wall of the second shell 40, and the positioning ridges 41 are fixedly connected to the outer wall of the second shell 40; the first shell 30 is provided with two limiting protrusions 31 corresponding to the positions of the positioning ridges 41, and the two limiting protrusions 31 are fixedly connected to the first shell 30 and are arranged at a certain distance from each other, thereby forming limiting grooves 32 between each other, and the first shell 30 rotates around the second shell 40 so that the positioning ridges 41 can be stuck in the limiting grooves 32, thereby making the first shell 30 form a folding state of a preset angle relative to the second shell 40.

[0042] Specifically, the rotation between the first shell 30 and the second shell 40 is mainly fixed by bolts, and in order to rotate smoothly, the bolts must not be rotated too tight. At the same time, there will be a problem that if the rotation between the first shell 30 and the second shell 40 is too loose, it is easy to cause the angle of the light-emitting lamp body 10 to be unable to be maintained after folding, or even change its angle by itself, resulting in instability of the light-emitting lamp body 10. Therefore, a relatively stable folding state can be achieved by setting a locking connection between the limiting groove 32 and the positioning convex strip 41.

[0043] like Figure 4 As shown, preferably, the multiple groups of positioning ridges 41 are provided with a first ridge 42, a second ridge 43 and a third ridge 44, the first ridge 42 and the second adapter column 47 form a 90-degree angle with the center axis of the second shell 40 as the vertex, the second ridge 43 and the second adapter column 47 form a 180-degree angle with the center axis of the second shell 40 as the vertex, and the third ridge 44 and the second adapter column 47 form a 270-degree angle with the center axis of the second shell 40 as the vertex.

[0044] Specifically, in combination with the installation method of the production bracket 50, the alarm light has three main folding methods, so three sets of positioning ridges 41 can be provided so that the second housing 40 can maintain three rotation angles relative to the first housing 30. Thus, the light-emitting lamp body 10 can be rotated and folded relative to the second adapter column 47, preferably forming an angle of 90 degrees, 180 degrees or 270 degrees with the second adapter column 47. The 90 degree angle can correspond to Figure 6 In the first use state shown, the 180 degree angle can correspond to Figure 7 In the second use state shown, the 270 degree angle may correspond to Figure 8 The third usage state is shown.

[0045] like Figures 1 to 3 As shown, preferably, the first shell 30 is provided with a bolt hole 33, and the second shell 40 is provided with a nut hole 45, and the bolt hole 33 and the nut hole 45 are coaxially arranged with each other, so that the first shell 30 and the second shell 40 can be rotatably connected by bolts.

[0046] Specifically, in order to facilitate the rotational connection between the first housing 30 and the second housing 40, it is preferred to respectively provide a bolt hole 33 and a nut hole 45, and use a bolt for connection. It is understandable that the nut hole 45 can be set to a polygonal hole corresponding to the nut. In addition, the rotation of the bolt and the nut is preferably not completely rotationally tightened, but to ensure that the first housing 30 and the second housing 40 can rotate relative to each other, so as to achieve a stable connection.

[0047] like Figures 3 to 5 As shown, preferably, an inner ring 34 is provided at one end of the side wall of the first shell 30 close to the second shell 40, and an outer ring 46 is provided at one end of the side wall of the second shell 40 close to the first shell 30, and the inner ring 34 and the outer ring 46 cooperate with each other to form a rotatable embedded connection between the first shell 30 and the second shell 40.

[0048] Specifically, in order to prevent the first shell 30 and the second shell 40 from being offset or falling off in a relatively loose bolt connection, the inner ring 34 and the outer ring 46 can be set to have a limitable embedded connection so that the two can rotate along their central axis but cannot be displaced radially along the central axis.

[0049] like Figure 3 As shown, preferably, a reinforcing rib 35 is provided inside the first shell 30, and the reinforcing rib 35 is respectively fixed to the side wall and the top wall of the first shell 30, and a wire groove 36 is provided at a position of the reinforcing rib 35 close to the side wall of the first shell 30, and the wire groove 36 is used to accommodate the power cable of the light-emitting lamp body 10.

[0050] Specifically, in order to strengthen the overall structural strength of the first housing 30, a reinforcing rib 35 may be provided inside the first housing 30, and in order to guide and accommodate the power cable entering the light-emitting lamp body 10, a corresponding wire groove 36 may be provided. It is understandable that the second housing 40 may also be provided with reinforcing ribs 35, and the reinforcing ribs 35 are respectively fixed to the side wall and the top wall of the second housing 40. Since the power cable does not need to be guided inside the second housing 40, the wire groove 36 may not be provided.

[0051] like Figure 1 As shown, preferably, the light emitting lamp body 10 is provided with a color-changing lamp group, and the lights of different colors emitted by the lamp group are all irradiated from the same position of the light emitting lamp body 10. The lamp group is provided with color-changing LED lamp beads, and the LED lamp beads can emit green, yellow and red lights respectively.

[0052] Specifically, the light emitting lamp body 10 can be set to emit light as a whole and change color as a whole, thereby avoiding the problem that the light emitting area of ​​the traditional three-color alarm light is too small. At the same time, the three-color change can be realized by using color-changing LED lamp beads, thereby correspondingly giving different prompts or alarms.

[0053] In another embodiment, a buzzer is further provided inside the light emitting lamp body 10, and the buzzer is electrically connected to an external control component, so that a sound alarm operation is performed under the control of the external control component.

[0054] Specifically, for some workstations where it is inconvenient to observe the light of the alarm light, a buzzer can be added inside the alarm light. When the alarm light emits the alarm light, the buzzer is driven to emit a corresponding sound to give an alarm prompt, thereby improving the use scenario of the alarm light.

[0055] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. A single-layer three-color warning light that is easy to adjust, characterized in that: The invention comprises a light-emitting lamp body (10) and an adapter lamp holder (20), wherein the light-emitting lamp body (10) is used to emit an alarm light, one end of the adapter lamp holder (20) is fixedly connected to the light-emitting lamp body (10), and the other end thereof is used to mount the alarm light on an external production bracket (50); the adapter lamp holder (20) is provided with a first shell (30) and a second shell (40) which are rotatably connected to each other around a central axis, the first shell (30) is provided with a first adapter column (37), one end of the first adapter column (37) is fixedly connected to the first shell (30), and the other end thereof is fixedly connected to the light-emitting lamp body (10); the second shell (40) is provided with a second adapter column (47), one end of the second adapter column (47) is fixedly connected to the second shell (40), and the other end thereof is used to fix to the external production bracket (50).

2. The easily adjustable single-layer three-color warning light according to claim 1, characterized in that: The outer wall of the second adapter column (47) is provided with a snap-fit ​​convex strip (48), and the snap-fit ​​convex strip (48) can assist the second adapter column (47) to be fixed to an external production bracket (50), or assist in installing an external snap-fit ​​accessory.

3. The easily adjustable single-layer three-color warning light according to claim 1, characterized in that: A buzzer is also provided inside the light-emitting lamp body (10), and the buzzer is electrically connected to an external control component, so that an audible alarm prompt is given under the control of the external control component.

4. The easily adjustable single-layer three-color warning light according to claim 1, characterized in that: A plurality of groups of positioning convex strips (41) are provided on the circumference of the outer wall of the second shell (40), and the positioning convex strips (41) are fixedly connected to the outer wall of the second shell (40); the first shell (30) is provided with two limiting protrusions (31) at positions corresponding to the positioning convex strips (41), and the two limiting protrusions (31) are fixedly connected to the first shell (30) and are arranged at a certain distance from each other, so as to form limiting grooves (32) between each other; the first shell (30) rotates around the second shell (40), so that the positioning convex strips (41) can be inserted into the limiting grooves (32), thereby forming a folding state of the first shell (30) at a preset angle relative to the second shell (40).

5. The easily adjustable single-layer three-color warning light according to claim 4, characterized in that: The plurality of groups of positioning convex strips (41) are provided with a first convex strip (42), a second convex strip (43) and a third convex strip (44); the first convex strip (42) and the second transfer column (47) form an angle of 90 degrees with the central axis of the second shell (40) as the vertex; the second convex strip (43) and the second transfer column (47) form an angle of 180 degrees with the central axis of the second shell (40) as the vertex; and the third convex strip (44) and the second transfer column (47) form an angle of 270 degrees with the central axis of the second shell (40) as the vertex.

6. The easily adjustable single-layer three-color warning light according to claim 1, characterized in that: The first shell (30) is provided with a bolt hole (33), and the second shell (40) is provided with a nut hole (45), wherein the bolt hole (33) and the nut hole (45) are coaxially arranged with each other, so that the first shell (30) and the second shell (40) can be rotatably connected by bolts.

7. The easily adjustable single-layer three-color warning light according to claim 1, characterized in that: An inner ring (34) is provided at one end of the side wall of the first shell (30) close to the second shell (40), and an outer ring (46) is provided at one end of the side wall of the second shell (40) close to the first shell (30). The inner ring (34) and the outer ring (46) cooperate with each other to form a rotatable embedded connection between the first shell (30) and the second shell (40).

8. The easily adjustable single-layer three-color warning light according to claim 1, characterized in that: A reinforcing rib (35) is provided inside the first shell (30), the reinforcing rib (35) being respectively fixed to the side wall and the top wall of the first shell (30), and a wire groove (36) is provided at a position of the reinforcing rib (35) close to the side wall of the first shell (30), the wire groove (36) being used to accommodate a power cable of the light-emitting lamp body (10).

9. The easily adjustable single-layer three-color warning light according to claim 1, characterized in that: The light-emitting lamp body (10) is provided with a light group with variable colors, and the lights of different colors emitted by the light group are all radiated from the same position of the light-emitting lamp body (10).

10. The easily adjustable single-layer three-color warning light according to claim 9, characterized in that: The lamp group is provided with color-changing LED lamp beads, and the LED lamp beads can emit green, yellow and red lights respectively.

Citation Information

Patent Citations

  • Three-color alarm lamp convenient to mount and dismount

    CN210831737U