Light-emitting assembly and combustible gas detector

Abstract

The utility model relates to the technical field of detection equipment, and particularly discloses a light-emitting assembly and a combustible gas detector, and the light-emitting assembly comprises a circuit board assembly and an arc-shaped reflector. The circuit board assembly comprises a circuit board body and light-emitting lamp beads, and the light-emitting lamp beads are arranged on the circuit board body; the arc-shaped reflecting plate is arranged on the circuit board body, the arc-shaped reflecting plate is provided with an arc-shaped reflecting surface, and the arc-shaped reflecting surface is arranged opposite to the light-emitting lamp beads and used for reflecting light beams emitted by the light-emitting lamp beads to the side end of the circuit board body. According to the utility model, the arc-shaped reflective surface can reflect the light beam emitted by the light-emitting lamp bead to the side end of the circuit board body, so that the situation that a user cannot determine the light-emitting type of the light-emitting lamp bead due to the influence of a visual field is avoided, the user can timely observe light emission, and potential safety hazards are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a light-emitting component and a combustible gas detector. Background Art

[0002] A combustible gas detector is a device that responds to the concentration of a single or multiple combustible gases. It converts the combustible gas concentration on site into an electrical signal and transmits it to the monitoring equipment to achieve the purpose of monitoring the combustible gas concentration on site. Household combustible gas detectors can detect the indoor combustible gas concentration and send out sound and light signals to warn residents that the indoor combustible gas concentration exceeds the standard and that safety hazards need to be eliminated in a timely manner.

[0003] Existing combustible gas detectors use LED lamp beads to emit light to sound an alarm. When the LED lamp beads emit light, they are directly emitted to the outside through a light guide column. However, this structure is limited to the condition of direct light. Users are easily affected by their field of vision and cannot determine the light type of the LED lamp beads, or even cannot observe the light, causing safety hazards. Utility Model Content

[0004] The purpose of the utility model is to provide a light-emitting component and a combustible gas detector to solve the problem that the light-emitting structure of the combustible gas detector in the prior art can only be limited to the situation where the light is directly irradiated, and the user is easily affected by the field of vision and cannot determine the light-emitting type of the LED lamp bead, or even cannot observe the light emission, causing a safety hazard.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In one aspect, the utility model provides a light-emitting component, the light-emitting component comprising:

[0007] A circuit board assembly, the circuit board assembly comprising a circuit board body and light-emitting lamp beads, the light-emitting lamp beads being arranged on the circuit board body;

[0008] An arc-shaped reflector, the arc-shaped reflector is arranged on the circuit board body, the arc-shaped reflector has an arc-shaped reflective surface, and the arc-shaped reflective surface is arranged opposite to the light-emitting lamp bead, and is used to reflect the light beam emitted by the light-emitting lamp bead to the side end of the circuit board body.

[0009] As an optional solution for the above-mentioned light-emitting component, a plurality of light-emitting lamp beads are provided, and the plurality of light-emitting lamp beads are arranged around the outer circumference of the circuit board body at intervals; a plurality of arc-shaped reflectors are provided, and the plurality of arc-shaped reflectors are arranged around one side of the plurality of light-emitting lamp beads close to the center of the circuit board body.

[0010] As an optional solution of the above-mentioned light-emitting assembly, a plurality of the arc-shaped reflective plates are sequentially connected end to end to form a ring structure.

[0011] As an optional solution of the above-mentioned light-emitting component, a reinforcing rib is connected between two adjacent arc-shaped reflective plates.

[0012] As an optional solution of the above-mentioned light-emitting component, an annular shielding plate is also arranged on the circuit board body, and the annular shielding plate is arranged around the light-emitting lamp bead.

[0013] As an optional solution of the above-mentioned light-emitting component, the light-emitting component also includes a light guide plate, which is connected to the arc-shaped reflective plate, and the light guide plate is located on a side of the arc-shaped reflective plate away from the center of the circuit board body; the light beam reflected by the arc-shaped reflective surface can be guided out through the light guide plate.

[0014] As an optional solution of the above-mentioned light-emitting component, the outer surface of the light guide plate is a frosted surface.

[0015] As an optional solution to the above-mentioned light-emitting assembly, the light guide plate is recessed toward the arc-shaped reflective plate.

[0016] As an optional solution of the above-mentioned light-emitting component, the light guide plate is a white translucent plate.

[0017] On the other hand, the utility model provides a combustible gas detector, comprising the light-emitting assembly as described above, wherein the combustible gas detector further comprises a housing, and the light-emitting assembly is detachably connected to the housing.

[0018] The beneficial effects of the utility model are:

[0019] The light-emitting assembly includes a circuit board assembly and an arc-shaped reflector. The circuit board assembly includes a circuit board body and light-emitting lamp beads. The light-emitting lamp beads are arranged on the circuit board body. The light-emitting lamp beads can emit light beams for alarming and indicating the concentration of combustible gas. Among them, the arc-shaped reflector is arranged on the circuit board body. The arc-shaped reflector has an arc-shaped reflective surface. The arc-shaped reflective surface is arranged opposite to the light-emitting lamp beads and is used to reflect the light beams emitted by the light-emitting lamp beads to the side end of the circuit board body, so as to avoid the user being affected by the field of vision and unable to determine the light-emitting type of the light-emitting lamp beads, and ensure that the user can observe the light emission in time to prevent safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a light-emitting component provided by an embodiment of the utility model;

[0021] Figure 2 A cross-sectional view of a light-emitting component provided by an embodiment of the utility model;

[0022] Figure 3 A schematic diagram of the structure of a portion of the light-emitting components provided in an embodiment of the utility model.

[0023] In the figure:

[0024] 1. Circuit board assembly; 11. Circuit board body; 111. Annular shielding plate; 12. Luminous lamp beads; 2. Arc reflector; 21. Reinforcing ribs; 3. Light guide plate. DETAILED DESCRIPTION

[0025] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] like Figure 1 to Figure 3 As shown, this embodiment provides a light-emitting component that can change the propagation path of the light beam of the light-emitting lamp bead 12.

[0030] The light-emitting assembly includes a circuit board assembly 1 and an arc-shaped reflector 2. The circuit board assembly 1 includes a circuit board body 11 and a light-emitting lamp bead 12. The light-emitting lamp bead 12 is arranged on the circuit board body 11. The light-emitting lamp bead 12 can emit a light beam for alarming and indicating the concentration of combustible gas. Among them, the arc-shaped reflector 2 is arranged on the circuit board body 11. The arc-shaped reflector 2 has an arc-shaped reflective surface. The arc-shaped reflective surface is arranged opposite to the light-emitting lamp bead 12, and is used to reflect the light beam emitted by the light-emitting lamp bead 12 to the side end of the circuit board body 11, so as to avoid the user being unable to determine the light-emitting type of the light-emitting lamp bead 12 due to the influence of the field of vision, and ensure that the user can observe the light in time to prevent safety hazards. Optionally, an opaque filler is added to the arc-shaped reflector 2 to prevent the arc-shaped reflector 2 from transmitting light, thereby ensuring that the arc-shaped reflector 2 can fully reflect light. Further optionally, the propagation direction of the light beam changes by 90° after being reflected by the arc-shaped reflective surface, so as to ensure that the light beam can be emitted from the side end of the circuit board body 11.

[0031] Furthermore, a plurality of light-emitting lamp beads 12 are provided, and the plurality of light-emitting lamp beads 12 are arranged at intervals around the outer periphery of the circuit board body 11, and a plurality of arc-shaped reflectors 2 are provided, and the plurality of arc-shaped reflectors 2 are arranged around the side of the plurality of light-emitting lamp beads 12 close to the center of the circuit board body 11, so that the plurality of light-emitting lamp beads 12 can be reflected by the plurality of arc-shaped reflectors 2, so that the circle around the outer periphery of the circuit board body 11 can emit light, thereby improving the warning effect. Among them, the plurality of arc-shaped reflectors 2 are connected end to end in sequence to form an annular structure, so that the light beam emitted by the light-emitting lamp beads 12 can be completely emitted from the side end of the circuit board body 11, thereby reducing the energy loss of light, and the inner ring of the annular structure can avoid the circuit board body 11, so as to facilitate the installation of electronic components on the circuit board body 11. At the same time, a reinforcing rib 21 is also connected between two adjacent arc-shaped reflectors 2, so that the structural strength of the arc-shaped reflector 2 can be strengthened through the reinforcing rib 21, and the deformation of the arc-shaped reflector 2 can be avoided to cause the change of the light path. Furthermore, an annular shielding plate 111 is also provided on the circuit board body 11 , and the annular shielding plate 111 is arranged around the light-emitting lamp bead 12 to shield the light-emitting lamp bead 12 from the periphery, so as to further reduce the energy loss of light.

[0032] Furthermore, the light-emitting component also includes a light guide plate 3, which is connected to the arc-shaped reflective plate 2, and the light guide plate 3 is located on the side of the arc-shaped reflective plate 2 away from the center of the circuit board body 11, and the light beam reflected by the arc-shaped reflective surface can be guided out through the light guide plate 3, so as to prevent the light beam from directly irradiating the user's eyes, thereby improving the user experience. Among them, the outer surface of the light guide plate 3 is a frosted surface, so that the light beam can be diffusely reflected when it is guided out from the light guide plate 3, so that the light beam can be homogenized to avoid uneven light beams. At the same time, the light guide plate 3 is a white translucent plate, so that the light guide plate 3 can guide colored light beams to facilitate user identification. Specifically, the light guide plate 3 is recessed toward the arc-shaped reflective plate 2, so that the light beam can be gathered after being guided out through the light guide plate 3, so as to enhance the brightness of the light and avoid the light beam divergence and dim phenomenon, which makes it difficult to identify.

[0033] The present embodiment also provides a combustible gas detector, including a light-emitting component as described above. The combustible gas detector also includes a shell, and the light-emitting component is detachably connected to the shell. Thus, the combustible gas detector avoids the user being affected by the field of vision and unable to determine the light-emitting type of the light-emitting lamp bead 12 by using a light-emitting component that can change the light-emitting direction, thereby ensuring that the user can observe the light emission in time and prevent safety hazards.

[0034] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A light emitting component, characterized in that: include: A circuit board assembly (1), the circuit board assembly (1) comprising a circuit board body (11) and a light-emitting lamp bead (12), the light-emitting lamp bead (12) being arranged on the circuit board body (11); An arc-shaped reflective plate (2), the arc-shaped reflective plate (2) being arranged on the circuit board body (11), the arc-shaped reflective plate (2) having an arc-shaped reflective surface, the arc-shaped reflective surface being arranged opposite to the light-emitting lamp bead (12) and being used for reflecting the light beam emitted by the light-emitting lamp bead (12) to the side end of the circuit board body (11).

2. The light emitting assembly according to claim 1, characterized in that: A plurality of the light-emitting lamp beads (12) are provided, and the plurality of the light-emitting lamp beads (12) are arranged at intervals around the outer circumference of the circuit board body (11); a plurality of the arc-shaped reflective plates (2) are provided, and the plurality of the arc-shaped reflective plates (2) are arranged around one side of the plurality of the light-emitting lamp beads (12) close to the center of the circuit board body (11).

3. The light emitting assembly according to claim 2, characterized in that: A plurality of the arc-shaped reflective plates (2) are connected end to end in sequence to form a ring structure.

4. The light emitting assembly according to claim 3, characterized in that: A reinforcing rib (21) is also connected between two adjacent arc-shaped reflective plates (2).

5. The light emitting assembly according to claim 1, characterized in that: An annular shielding plate (111) is also provided on the circuit board body (11), and the annular shielding plate (111) is arranged around the light-emitting lamp bead (12).

6. The light emitting assembly according to claim 1, characterized in that: The light-emitting component further comprises a light guide plate (3), the light guide plate (3) being connected to the arc-shaped reflective plate (2), and the light guide plate (3) being located on a side of the arc-shaped reflective plate (2) away from the center of the circuit board body (11); the light beam reflected by the arc-shaped reflective surface can be guided out via the light guide plate (3).

7. The light emitting assembly according to claim 6, characterized in that: The outer surface of the light guide plate (3) is a frosted surface.

8. The light emitting assembly according to claim 6, characterized in that: The light guide plate (3) is arranged to be recessed toward the arc-shaped reflective plate (2).

9. The light emitting assembly according to claim 6, characterized in that: The light guide plate (3) is a white semi-transparent plate.

10. A combustible gas detector, characterized in that: The combustible gas detector comprises the light-emitting assembly as described in any one of claims 1 to 9, and further comprises a shell, and the light-emitting assembly is detachably connected to the shell.

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