Acousto-optic fire alarm

Abstract

The utility model discloses an acoustic light fire-fighting alarm, relates to the field of fire protection, and its technical scheme main points are: including the casing, the front of casing is provided with recess, the bottom surface on recess is fixedly connected with the lamp plate, the back of casing is equipped with the buzzer and cable, and the fixed plate is integrally formed with the casing, and the bottom of the front of casing is rotationally connected with the closure through the pivot, and the closure covers the recess, and the top of closure is located on the side of pivot away from the buzzer, and the top of the one end of casing away from the buzzer is fixedly connected with the electromagnet, and the top of closure is matched with the electromagnet magnetic suction. In the utility model, the closure of automatic opening and closing provides comprehensive protection in the non - working condition, and guarantees the effective projection range of lamp plate under the working condition, and the layout of multi - angle lamp plate ensures that the light coverage is wider, and the dust baffle ring design of buzzer avoids the decline of acoustic performance.

Description

Technical Field

[0001] This utility model relates to the field of fire protection, and more specifically, it relates to an audible and visual fire alarm. Background Technology

[0002] In the field of fire protection equipment, audible and visual fire alarms, as key components of fire early warning systems, typically consist of high-intensity LED warning lights and high-decibel buzzers. Traditional audible and visual alarms use a fixed housing design, which easily accumulates dust and dirt when exposed to the environment for extended periods, especially in high-dust locations such as industrial plants and underground garages. Existing products primarily rely on periodic manual cleaning for housing protection, but cleaning and maintaining alarms installed at high locations is extremely inconvenient. A more significant problem is that when the alarm surface is covered in dust, the light transmittance of the LED warning lights decreases significantly, and blockage of the buzzer's sound outlet leads to a reduction in sound pressure level, affecting the alarm's propagation distance. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an audible and visual fire alarm.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a sound and light fire alarm, comprising a housing, a groove on the front of the housing, a light plate fixedly connected to the bottom of the groove, a buzzer and a cable on the back of the housing, an air inlet and outlet of the buzzer located on the side wall of the buzzer, a fixing plate above the buzzer, mounting holes on the fixing plate, the fixing plate being integrally formed with the housing, a cover rotatably connected to the bottom of the front of the housing via a rotating shaft, the cover covering the groove, the top of the cover located on the side of the rotating shaft facing away from the buzzer, an electromagnet fixedly connected to the top of the housing at the end away from the buzzer, and the top of the cover magnetically engaging with the electromagnet.

[0005] The present invention is further configured such that a magnetic block that cooperates with the magnetic force of the electromagnet is fixedly connected to the top of the cover.

[0006] The present invention is further configured such that the magnetic block is located on the side of the cover facing away from the housing.

[0007] The present invention is further configured such that: the lamp panel is composed of a central lamp panel and an outer lamp panel, the central lamp panel is oriented horizontally, and the outer lamp panel is oriented at an angle.

[0008] The present invention is further configured such that: the outer light panel is composed of a plurality of first light panels and a plurality of second light panels, the first light panels and the second light panels form an alternating circumferential array, and the first light panels and the second light panels are tilted in opposite directions.

[0009] The present invention is further configured such that: a retaining ring is fixedly connected to the outer side of the housing near the buzzer, and the retaining ring covers the air inlet and outlet of the buzzer.

[0010] In summary, this utility model has the following beneficial effects: First, the automatically opening and closing cover provides comprehensive protection in the non-working state and ensures the effective projection range of the lamp panel in the working state; second, the multi-angle lamp panel layout ensures a wider light coverage range; and finally, the dustproof ring design of the buzzer avoids a decrease in acoustic performance. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 .

[0012] In the diagram: 1. Housing; 2. Groove; 3. Buzzer; 4. Cable; 5. Cover; 6. Electromagnet; 7. Magnetic block; 8. Center light panel; 9. First light panel; 10. Second light panel; 11. Retaining ring; 12. Fixing plate; 13. Mounting hole; 14. Shaft. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0014] Example: An audible and visual fire alarm, such as Figure 1 , Figure 2 , Figure 3 As shown, a circular groove 2 with a depth of 15mm is provided on the front of the housing 1, and a multi-layer LED light panel assembly is installed at the bottom of the groove 2. The light panel is divided into two parts: a central light panel 8 and outer light panels. The central light panel 8 is installed horizontally for direct warning, while the outer light panels adopt an alternating tilt design. The first light panel 9 and the second light panel 10 are arranged in a circular array at angles of 30 degrees and -30 degrees, respectively, forming a multi-angle warning light effect and improving the diffusion range of the warning light. A high-decibel buzzer 3 is integrated on the back of the housing 1. A strip-shaped air inlet and outlet is opened on the side wall of the buzzer 3, and an integrally formed fixing plate 12 is provided above it. The mounting holes 13 on the fixing plate 12 facilitate wall mounting. An arc-shaped baffle 11 is provided above the air inlet and outlet of the buzzer 3 to prevent dust from falling directly into the buzzer 3.

[0015] like Figure 1 , Figure 2 , Figure 3As shown, the cover 5 is connected to the bottom of the housing 1 via a stainless steel pivot 14, allowing for a 120-degree opening and closing motion. The cover 5 is made of transparent polycarbonate material with a thickness of 3mm, ensuring both sufficient light transmittance for easy inspection and adequate structural strength. A magnet 7, specifically a neodymium magnet, is embedded on the outer top of the cover 5, forming a magnetic attraction with the electromagnet 6 mounted on the top of the housing 1. The electromagnet 6 is powered by 12V DC via cable 4 and is also linked to the alarm system for control. In standby mode, the electromagnet 6 is energized and engaged, keeping the cover 5 closed and completely covering the light panel within the groove 2 to prevent dust and dirt from entering. When the alarm is triggered, the electromagnet 6 is de-energized and released, and the cover 5 automatically opens under gravity, revealing the warning light panel.

[0016] like Figure 1 , Figure 2 , Figure 3 As shown, the pivot 14 of the cover 5 is located at the bottom front of the housing 1, and the top of the cover 5 is located outside the pivot 14. This layout ensures that the cover 5 can be deflected entirely by its own weight and the gravity acting on the magnet 7 when it is opened. The pivot 14 uses a self-lubricating copper bushing bearing to ensure smooth rotation even after long-term use. The magnetic mating surfaces are precision machined, with flatness controlled within 0.1mm to ensure a good seal. Silicone sealing strips are installed at all seams of the housing 1 to prevent dust from entering from the sides.

[0017] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An audible, optical fire alarm, characterized by: The device includes a housing (1), a groove (2) is provided on the front of the housing (1), a lamp plate is fixedly connected to the bottom surface of the groove (2), a buzzer (3) and a cable (4) are provided on the back of the housing (1), the air inlet and outlet of the buzzer (3) are located on the side wall of the buzzer (3), a fixing plate (12) is provided above the buzzer (3), a mounting hole (13) is provided on the fixing plate (12), the fixing plate (12) is integrally formed with the housing (1), a cover (5) is rotatably connected to the bottom of the front of the housing (1) through a rotating shaft (14), the cover (5) covers the groove (2), the top of the cover (5) is located on the side of the rotating shaft (14) away from the buzzer (3), an electromagnet (6) is fixedly connected to the top of the housing (1) away from the buzzer (3), and the top of the cover (5) is magnetically attracted to the electromagnet (6).

2. The audible and visual fire alarm device according to claim 1, characterized in that: The top of the cover (5) is fixedly connected to a magnetic block (7) that cooperates with the magnetic force of the electromagnet (6).

3. The audible and visual fire alarm device according to claim 2, characterized in that: The magnetic block (7) is located on the side of the cover (5) facing away from the housing (1).

4. The audible and visual fire alarm device according to claim 1, characterized in that: The light panel consists of a central light panel (8) and an outer light panel, wherein the central light panel (8) is oriented horizontally and the outer light panel is oriented at an angle.

5. The audible and visual fire alarm device according to claim 4, characterized in that: The outer light panel is composed of several first light panels (9) and several second light panels (10), the first light panels (9) and the second light panels (10) forming an alternating circumferential array, and the first light panels (9) and the second light panels (10) are tilted in opposite directions.

6. The photoacoustic fire alarm of claim 1, wherein: A retaining ring (11) is fixedly connected to one end of the housing (1) near the buzzer (3), and the retaining ring (11) covers the air inlet and outlet of the buzzer (3).

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