A lamp equipped with a pyroelectric infrared sensor

Abstract

A lamp assembled with a pyroelectric infrared sensor, wherein the PC lens is made of VO first-class flame-retardant material. When the human infrared sensor module is installed on the PC lens, only the non-charged part of the sensor probe is exposed from the PC lens through the sensing window provided on the PC lens, while the charged part of the sensor probe, the driving board and the photodiode are all blocked by the PC lens below the PC lens. A PC fixing part is fixedly installed below the sensing window of the PC lens, and an elastic silicone ring is tightly fitted between the sensing probe of the pyroelectric infrared sensor and the PC lens. When the elastic silicone ring is set on the pyroelectric infrared sensor, the non-charged part of the sensor probe is exposed from the elastic window provided on the elastic silicone ring. The lamp not only meets the outdoor waterproof requirements, but also completely solves the problem that the driving scheme of the lamp power supply cannot adopt a non-isolated power supply scheme because the lamp fails to meet the UL regulatory certification requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of lamp lighting production, and in particular relates to an assembly structure of a pyroelectric infrared sensor on an outer lens. Background Art

[0002] At present, in the lighting industry, a PC lens is provided on the main body shell of a lamp with a pyroelectric infrared sensor. The pyroelectric infrared sensor is installed on the PC lens, and an infrared Fresnel lens is provided on the PC lens corresponding to the installation position of the pyroelectric infrared sensor. The infrared Fresnel lens is made of PE material, and the infrared Fresnel lens made of PE material currently does not meet the yellow card standard of UL regulations in the entire lighting industry, so that the entire lamp does not meet the certification requirements of UL regulations. Therefore, the entire lighting industry has always adopted an isolated power supply solution in the power supply and driving scheme of lamps with pyroelectric infrared sensors, so that the pyroelectric infrared sensor of the lamp with pyroelectric infrared sensor meets the LVLE requirements (safe low voltage recognized by UL regulations), so that the lamp with pyroelectric infrared sensor meets the UL regulatory certification requirements as a whole. Because the isolation power supply solution is costly, and the problem that the infrared Fresnel lens does not meet the yellow card standard of UL regulations has not been solved, the price of lighting products with pyroelectric infrared sensors on the market remains high. Summary of the invention

[0003] In order to solve the problems existing in the prior art, the present invention provides a lamp assembled with a pyroelectric infrared sensor, which can not only meet the conditions for outdoor use, but also achieve excellent waterproof purpose; it completely solves the problem that the lamp cannot meet the UL regulatory certification requirements, resulting in the lamp power supply driving scheme cannot adopt a non-isolated power supply scheme.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A lamp assembled with a pyroelectric infrared sensor, comprising a main body shell, a PC lens, a human infrared sensing module, a PC fixing piece, an elastic silicone ring and an infrared Fresnel lens; wherein the human infrared sensing module comprises a pyroelectric infrared sensor and a photosensitive diode installed and fixed on the driving board;

[0006] The pyroelectric infrared sensor, wherein the sensing probe of the pyroelectric infrared sensor is provided with a non-charged body part located in the middle of the sensing probe; the portion of the sensing probe other than the non-charged body part is the charged body part;

[0007] PC lens, the PC lens is a PC lens made of VO first-class flame-retardant material, and is covered on the main body shell; the PC lens is provided with a sensing window whose shape and size correspond to the shape and size of the non-charged body part of the sensing probe of the pyroelectric infrared sensor; when the human infrared sensing module is installed on the PC lens, only the non-charged body part is exposed from the sensing window, and the charged body part of the sensing probe, the driving board and the photodiode are all blocked by the PC lens below the PC lens;

[0008] A driving plate, wherein a plurality of limiting holes are provided on the driving plate;

[0009] A PC fixing part, wherein a plurality of buckles are arranged on the PC fixing part, and the buckles are arranged corresponding to the plurality of limiting holes on the driving board, so that the PC fixing part is fixedly installed below the sensing window of the PC lens; an elastic silicone ring, which is an elastic silicone ring made of VO first-class flame-retardant material, and the elastic silicone ring is tightly fitted between the sensing probe of the pyroelectric infrared sensor and the PC lens; an elastic window is arranged on the elastic silicone ring, and when the elastic silicone ring is sleeved on the sensing probe of the pyroelectric infrared sensor, the non-charged body part of the sensing probe is exposed from the elastic window) through the elastic silicone ring.

[0010] In the lamp assembled with the pyroelectric infrared sensor as described above, the non-charged body part of the sensing probe of the pyroelectric infrared sensor is made of glass.

[0011] In the lamp assembled with a pyroelectric infrared sensor as described above, the PC fixing piece is welded to the PC lens by ultrasonic wave.

[0012] The technical solution provided above has the following beneficial effects:

[0013] First, the lamp of the present invention, while continuing to use the infrared Fresnel lens of the prior art which does not meet the yellow card standard of UL regulations, uses the structural design of PC lens, human infrared sensing module and PC fixing parts to achieve that the charged part of the human infrared sensing module is completely wrapped by the lens material which meets the yellow card standard of UL regulations, leaving only the non-charged part of the pyroelectric infrared sensor exposed. When the charged part of the human infrared sensing module is completely covered by the PC lens which meets the yellow card standard of UL regulations, a non-isolation solution can be used to power the human infrared sensing module, which completely solves the pain point that the industry cannot adopt a non-isolation solution due to certification issues.

[0014] Second, in order to match outdoor products, the lamp of the present invention is additionally provided with an elastic silicone ring between the sensing probe of the pyroelectric infrared sensor and the PC lens, so as to achieve an excellent waterproof purpose and meet the requirements of outdoor use.

[0015] Third, the photodiode of the present invention is also a charged body, and the photodiode is shielded and wrapped by a transparent PC lens, which can ensure that the photodiode continues to perform its function while meeting the requirements of UL regulatory safety certification.

[0016] Fourthly, the PC fixings and PC lenses are ultrasonically welded, which not only fixes the infrared sensing module of the human body, but also shields the influence of the self-luminescence of the whole lamp on photosensitivity because the PC fixings are also light-shielding materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of a lamp assembled with a pyroelectric infrared sensor according to the present invention;

[0019] Figure 2 The three-dimensional decomposition structure of the lamp assembled with the pyroelectric infrared sensor of the present invention is shown in FIG. Figure 1 ;

[0020] Figure 3 The three-dimensional decomposition structure of the lamp assembled with the pyroelectric infrared sensor of the present invention is shown in FIG. Figure 2 ;

[0021] Figure 4 It is a schematic cross-sectional view of a lamp assembled with a pyroelectric infrared sensor according to the present invention;

[0022] Figure 5 yes Figure 4 A schematic diagram of the enlarged structure of part A;

[0023] Figure 6 It is a structural schematic diagram of the human body infrared sensing module of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the PC lens of the present invention. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0027] In the claims, specification and the above-mentioned drawings of the present invention, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the present invention.

[0028] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0029] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0030] Now combined Figures 1 to 7 As shown, a lamp assembled with a pyroelectric infrared sensor of the present invention is described, including a main body shell 100, a PC lens 200, a human infrared sensing module 300, a PC fixing part 400, an elastic silicone ring 500 and an infrared Fresnel lens 600.

[0031] Please combine Figure 6 As shown, the human infrared sensing module 300 of the present invention includes a pyroelectric infrared sensor 310 , a photodiode 320 and a driving board 330 , and the pyroelectric infrared sensor 310 and the photodiode 320 are respectively mounted and fixed on the driving board 330 .

[0032] The sensing probe 311 of the pyroelectric infrared sensor 310 of the present invention is provided with a non-charged body part 311A ​​located in the middle of the sensing probe 311. Specifically, the sensing probe 311 of the pyroelectric infrared sensor 310 is composed of a non-charged body part 311A ​​and a charged body part 311B, and the non-charged body part 311A ​​is located in the middle of the sensing probe 311, and the non-charged body part 311A ​​is made of glass. Specifically, in this embodiment, the non-charged body part 311A ​​of the sensing probe 311 of the pyroelectric infrared sensor 310 is a rectangular glass located in the middle of the sensing probe 311. The portion of the sensing probe 311 other than the non-charged body part 311A ​​is the charged body part 311B.

[0033] Please combine Figure 7 As shown, the PC lens 200 of the present invention is covered on the main housing 100. The PC lens 200 is a PC lens made of VO first-class flame retardant material. A sensing window 210 is provided on the PC lens 200, and the sensing window 210 is a through hole. The shape and size of the sensing window 210 correspond to the shape and size of the non-charged body part 311A ​​of the sensing probe 311 of the pyroelectric infrared sensor 310. When the human infrared sensing module 300 is installed on the PC lens 200 through the PC fixing part 400, only the non-charged body part 311A ​​of the sensing probe 311 is exposed from the sensing window 210 to the PC lens 200, while the charged body part 311B of the sensing probe 311, the driving board 330 and the photodiode 320 are all blocked by the PC lens 200 below the PC lens 200. In this way, when the human infrared sensing module 200 is completely covered by the PC lens 200 made of VO first-class flame-retardant material except for the non-charged part 311A, the power supply driving scheme of the lamp of the present invention can adopt a non-isolated power supply scheme to power the human infrared sensing module 300, which completely solves the pain point that the non-isolated power supply scheme cannot be adopted in the industry due to UL certification requirements. And the photodiode 320 blocked by the PC lens 200 made of VO first-class flame-retardant material, because the photodiode 320 is also a charged body, the design of being wrapped by the transparent PC lens 200 can ensure that the photodiode 320 can continue to perform its function while solving the UL regulatory safety requirements (the gold finger required by the UL regulatory safety requirements is not allowed to touch the charged body).

[0034] The driving board 330 of the present invention is provided with a plurality of limiting holes 331. A row of wires 700 connects the driving board 300 and a main driving power source to supply power to the human body infrared sensing module 300.

[0035] The PC fixing part 400 of the present invention is provided with a plurality of buckles 410, and the buckles 410 are arranged corresponding to the plurality of limiting holes 331 on the driving plate 330. The human infrared sensing module 300 is fixed on the PC fixing part 400 by the plurality of buckles 331 correspondingly snapping on the plurality of limiting holes 410. The PC fixing part 400 is fixedly installed below the sensing window 210 of the PC lens 200. Specifically, the PC fixing part 400 is ultrasonically welded on the PC lens 200, and the PC fixing part 400 and the PC lens are ultrasonically welded, which not only plays the role of fixing the human infrared sensing module 300, but also plays the role of shielding the influence of the self-luminescence of the whole lamp on the photosensitivity because the PC fixing part 400 is also a light-shielding material.

[0036] The elastic silicone ring 500 of the present invention is an elastic silicone ring made of VO first-class flame retardant material. The elastic silicone ring 500 is tightly fitted between the sensing probe 311 of the pyroelectric infrared sensor 310 and the PC lens 200. Specifically, the elastic silicone ring 500 is sleeved on the sensing probe 311 of the pyroelectric infrared sensor 310, and an elastic window 510 is provided on the elastic silicone ring 500. When the elastic silicone ring 500 is sleeved on the sensing probe 311 of the pyroelectric infrared sensor 310, the shape and size of the elastic window 510 are adapted to the shape and size of the non-charged body part 311A ​​of the sensing probe 311 of the pyroelectric infrared sensor 310, so that the non-charged body part 311A ​​of the sensing probe 311 exposes the elastic silicone ring 500 from the elastic window 510, and then exposes the PC lens 200. Optimally, when the elastic silicone ring 500 is mounted on the sensing probe 311 of the pyroelectric infrared sensor 310, the shape and size of the elastic window 510 are the same as the shape and size of the non-charged body portion 311A ​​of the sensing probe 311 of the pyroelectric infrared sensor 310. When the human infrared sensing module 300 is buckled on the PC fixing member 400, the elastic silicone ring 500 tightly fitted between the sensing probe 311 of the pyroelectric infrared sensor 310 and the PC lens 200 achieves excellent waterproofing to meet the requirements of outdoor use.

[0037] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A lamp assembled with a pyroelectric infrared sensor, characterized in that: It comprises a main body shell (100), a PC lens (200), a human infrared sensor module (300), a PC fixing part (400), an elastic silicone ring (500) and an infrared Fresnel lens (600); wherein: A human infrared sensing module (300), the human infrared sensing module (300) comprising a pyroelectric infrared sensor (310) and a photosensitive diode (320) mounted and fixed on a driving board (330); A pyroelectric infrared sensor (310), wherein a sensing probe (311) of the pyroelectric infrared sensor (310) is provided with a non-charged body portion (311A) located in the middle of the sensing probe (311); the portion of the sensing probe (311) other than the non-charged body portion (311A) is a charged body portion (311B); A PC lens (200), wherein the PC lens (200) is a PC lens made of VO first-class flame-retardant material and is covered on the main housing (100); the PC lens (200) is provided with a sensing window (210) whose shape and size correspond to the shape and size of the non-charged body part (311A) of the sensing probe (311) of the pyroelectric infrared sensor (310); when the human body infrared sensing module (300) is mounted on the PC lens (200), only the non-charged body part (311A) is exposed from the sensing window (210) of the PC lens (200), while the charged body part (311B) of the sensing probe (311), the driving board (330) and the photosensitive diode (320) are all blocked by the PC lens (200) below the PC lens (200); A driving plate (330), wherein the driving plate (330) is provided with a plurality of limiting holes (331); A PC fixing member (400), wherein the PC fixing member (400) is provided with a plurality of buckles (410), and the buckles (410) are arranged corresponding to the plurality of limiting holes (331) on the driving plate (330), so that the PC fixing member (400) is fixedly installed below the sensing window (210) of the PC lens (200); The elastic silicone ring (500) is an elastic silicone ring made of VO first-class flame-retardant material. The elastic silicone ring (500) is tightly fitted between the sensing probe (311) of the pyroelectric infrared sensor (310) and the PC lens (200). An elastic window (510) is provided on the elastic silicone ring (500). When the elastic silicone ring (500) is sleeved on the sensing probe (311) of the pyroelectric infrared sensor (310), the non-charged body part (311A) of the sensing probe (311) is exposed from the elastic silicone ring (500) through the elastic window (510).

2. A lamp equipped with a pyroelectric infrared sensor according to claim 1, characterized in that: The non-charged body part (311A) of the sensing probe (311) of the pyroelectric infrared sensor (310) is made of glass.

3. A lamp equipped with a pyroelectric infrared sensor according to claim 1 or 2, characterized in that: The PC fixing piece (400) is welded onto the PC lens (200) by ultrasonic welding.

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