Illuminating device and range hood applying same

Abstract

The utility model discloses a lighting device and a range hood applying the lighting device, and the lighting device comprises a lamp panel which comprises a PCB (Printed Circuit Board) substrate and lamp beads arranged on the PCB substrate; the lamp shell comprises a shell body with an opening in one side, and the lamp panel is arranged in the shell body; the lampshade is arranged at the opening of the shell; the clamping spring is used for being installed on an external installation foundation, the top, away from the lampshade, of a shell body of the lamp shell is sunken in the direction of the lampshade to form a screw column, and a screw penetrates through the clamping spring and penetrates into the screw column to fix the clamping spring and the lamp shell; through holes are formed in the positions, corresponding to the screw columns, of the PCB substrate, and the screw columns partially penetrate through the through holes.

Description

Technical Field

[0001] This utility model relates to a lighting device and a range hood using the lighting device. Background Technology

[0002] As an essential kitchen appliance in every household, the range hood works by using a high-speed rotating impeller in the casing to draw in cooking fumes through the air inlet, filter the fumes using the impeller, and then expel the filtered fumes through the air outlet, thus purifying the kitchen air. A well-designed air inlet can improve the fume extraction effect, reduce the escape of fumes, and improve the air quality in the kitchen.

[0003] Lighting devices, as a basic component of range hoods, are generally located below the smoke collection hood, on the side panel of the frame, or under the fan cover. Currently, elongated LED lights are commonly used as lighting devices, such as the lighting lamp disclosed in Chinese Patent Application No. 201721239616.X. This type of lighting device, which uses a spring clip for mounting, has the spring clip fixed by a plastic screw post structure on the lampshade. The PCB board rests on the bottom surface of the plastic screw post, which increases the overall height of the LED light, taking up too much space in the product and wasting materials, thus increasing costs. The PCB board is also fixed to the lampshade by screw posts, increasing the process and cost.

[0004] In addition, some lighting devices are limited by two vertical ribs on the side wall of the lampshade and the notch on the mounting hole of the mounting base (sheet metal part). Usually, due to the lack of guidance, the limiting ribs cannot fall into the limiting hole properly during installation, resulting in failure to install properly. Utility Model Content

[0005] The first technical problem to be solved by this utility model is to provide a lighting device that reduces the height and reduces the waste of installation height, in order to address the shortcomings of the existing technology.

[0006] The second technical problem to be solved by this utility model is to provide a lighting device that ensures proper installation, addressing the shortcomings of the existing technology.

[0007] The third technical problem to be solved by this utility model is to provide a range hood with the above-mentioned lighting device.

[0008] The technical solution adopted by this utility model to solve the first technical problem mentioned above is: a lighting device, comprising:

[0009] A light board, which includes a PCB substrate and LEDs disposed on the PCB substrate;

[0010] A lamp housing, comprising a housing with an opening on one side, wherein the lamp panel is disposed within the housing;

[0011] The lampshade is positioned at the opening of the housing; and

[0012] A retaining ring is used for mounting to an external mounting base. The top of the lamp housing, away from the lampshade, is recessed towards the lampshade to form a screw post. A screw passes through the retaining ring and into the screw post to fix the retaining ring and lamp housing. Its characteristic is:

[0013] A through hole is provided on the PCB substrate at the position corresponding to the screw post, and the screw post part passes through the through hole.

[0014] By allowing the screw post to pass through the PCB substrate, the height waste caused by the PCB substrate pressing against the bottom surface of the screw post is reduced, effectively utilizing every dimension in the height direction of the entire lamp, reducing material waste and unnecessary occupation of the overall space.

[0015] To reduce the number of steps required to fix the PCB substrate and to facilitate operation, the lamp housing also includes a buckle. The buckle is located on the top inner side of the housing away from the lampshade. The PCB substrate has a locking slot, and the buckle passes through the locking slot to engage and fix with the PCB substrate.

[0016] To prevent PCB debris from easily falling off when the clips engage with the PCB substrate, thus avoiding defects such as black spots when the lighting device is lit, the clips are spaced apart from the outer periphery of the PCB substrate.

[0017] To ensure the buckle has the best possible elasticity, the top of the housing should be at least at the same height as, or higher than, the head of the screw protruding from the snap ring at the buckle location.

[0018] The technical solution adopted by this utility model to solve the second technical problem mentioned above is as follows: the lamp housing is provided with limiting ribs on both sides of the width direction of the housing, and there are two limiting ribs on each side. Each limiting rib includes a first rib part and a second rib part. The second rib part is located at the end of the first rib part near the top of the housing. The two first rib parts are arranged at intervals along the length direction of the housing. The second rib parts of the two limiting ribs are inclined towards each other in the direction away from the lamp cover until they are connected, so that the two limiting ribs are integrated into one.

[0019] The triangle formed by the second rib of the limiting rib can serve as a guide during installation, thus ensuring that the lighting device is installed in place.

[0020] Furthermore, the lighting device also includes a lead wire electrically connected to the PCB substrate. One end of the lamp housing along its length is a lead wire outlet, and the lead wire is led out from the lead wire outlet, thereby further reducing the overall height.

[0021] To facilitate lamp housing demolding and maximize the length of the PCB substrate, the cable outlet is divided into a first wall and a second wall along the height of the lamp housing. The first wall is close to the top of the housing, while the second wall is close to the lamp shade. The cable outlet is located in the first wall, and the draft value of the first wall is greater than that of the second wall.

[0022] Furthermore, the end of the housing opposite to the output end in the length direction is the non-output end. The LEDs on the PCB substrate are arranged at equal intervals along the length direction of the PCB substrate. The draft value of the non-output end is less than the draft value of the first wall of the output end. The distance between the LED closest to the edge of the non-output end and the center of the lampshade is greater than the distance between the LED closest to the edge of the output end and the center of the lampshade. This makes the light-emitting area in the length direction of the lampshade the longest and the light-emitting effect the best.

[0023] The first technical solution adopted by this utility model to solve the third technical problem mentioned above is: a range hood, characterized in that: it applies the lighting device described above.

[0024] The second technical solution adopted by this utility model to solve the third technical problem mentioned above is: a range hood, characterized in that: it applies the lighting device as described above, the range hood includes a mounting plate as the external mounting base, and the mounting plate includes a limiting notch that cooperates with the limiting rib.

[0025] Compared with the prior art, the advantages of this utility model are as follows: by allowing the screw post to pass through the PCB substrate, the height waste caused by the PCB substrate hitting the bottom surface of the screw post is reduced, the dimensions of every point in the height direction of the entire lamp are effectively utilized, and material waste and unnecessary occupation of the overall space are reduced; the triangle formed by the second rib of the limiting rib can play a guiding role during installation, thereby ensuring that the lighting device is installed in place. Attached Figure Description

[0026] Figure 1 This is a schematic diagram showing the installation status of the lighting device and the external mounting base according to an embodiment of the present utility model.

[0027] Figure 2 This is a cross-sectional view of the lighting device and the external mounting base in an embodiment of the present utility model.

[0028] Figure 3 for Figure 2 A magnified schematic diagram of part I;

[0029] Figure 4 This is a sectional front view of the lighting device and its external mounting base in an embodiment of the present utility model.

[0030] Figure 5 for Figure 4 A magnified schematic diagram of part II;

[0031] Figure 6 This is an exploded view of the lighting device according to an embodiment of the present utility model;

[0032] Figure 7 for Figure 6 A magnified schematic diagram of part III;

[0033] Figure 8 This is a sectional side view (section and) of the lighting device and its external mounting base in the installation state according to an embodiment of the present invention. Figure 4 vertical);

[0034] Figure 9 This is a schematic diagram of a range hood used in the lighting device of this utility model embodiment. Detailed Implementation

[0035] The technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or server that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0037] Various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0038] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0039] In this document, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0040] The specific angles, heights, widths, and other values ​​given in the following detailed embodiments are all measured in accordance with the specific accompanying drawings.

[0041] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details. In some instances, methods, means, components, and circuits well known to those skilled in the art have not been described in detail in order to highlight the main points of this disclosure.

[0042] See Figures 1 to 7 A lighting device 100 is mounted on an external mounting base, such as the mounting plate 200 shown in this embodiment. The mounting plate 200, serving as the mounting base for the lighting device 100, can be part of the smoke collection hood 300 of a range hood, such as... Figure 9 As shown.

[0043] The lighting device 100 includes a lamp panel 1 and a lamp housing 2. The lamp housing 2 is generally elongated, and the lamp panel 1 is disposed inside the lamp housing 2. The lamp housing 2 includes a housing 21 with an opening on one side. The housing 21 is elongated, and a lampshade 3 is provided at the opening of the housing 21 so that the light emitted by the lamp panel 1 can shine outward. In the case of a range hood, the lampshade 3 is usually located at the bottom of the lamp housing 2.

[0044] The lighting device 100 also includes a retaining ring 4 for mounting to the mounting plate 200. The retaining ring 4 is snapped and fixed to the mounting plate 200, and is also fixed to the lamp housing 2 by screws 41. The housing 21 of the lamp housing 2 is recessed towards the lamp cover 3 from the top to form a screw post 22. The screw 41 passes through the retaining ring 4 and enters the screw post 22, thereby fixing the lamp housing 2 and the retaining ring 4.

[0045] The lamp board 1 includes a PCB substrate 11 and lamp beads 12 disposed on the PCB substrate 11. Preferably, the lamp beads 12 are LED lamp beads. A through hole 111 is provided on the PCB substrate 11 at the position corresponding to the screw post 22. The screw post 22 can partially pass through the through hole 111, thereby reducing the height waste caused by the PCB substrate 11 pressing against the bottom surface of the screw post 22. The overall height of the lighting device 100 is mainly determined by the thickness of the lampshade 3, the light distribution distance between the PCB substrate 11 and the lampshade 3, the gap between the top of the housing 21 of the lamp shell 2 and the PCB substrate 11, the thickness of the lamp shell 2, the thickness of the retaining spring 4, and the height of the screw 41. This effectively utilizes every dimension in the overall height direction of the lamp, reducing material waste and unnecessary occupation of the overall space.

[0046] The lamp housing 2 also includes a buckle 23, which is located on the top inner side of the housing 21 away from the lampshade 3, that is, on the side opposite to the PCB substrate 11. The PCB substrate 11 has a slot 112, which is spaced apart from the outer peripheral edge of the PCB substrate 11. The buckle 23 can pass through the slot 112 and engage with the edge of the slot 112, thereby fixing the lamp housing 2 and the PCB substrate 11. This reduces the process and cost of fixing with screws.

[0047] To ensure that the clip 23 has sufficient flexibility and ease of installation, the top surface of the lamp housing 2, except for the part that mates with the retaining spring 4, is at least at the same height as or higher than the head 411 of the screw 41 protruding from the retaining spring 4 in the part where the clip 23 is installed (the clip 23 is not located at the location where the screw 41 interferes, therefore it is located outside the part that mates with the retaining spring 4). This gives the clip 23 the best flexibility for its existing height dimensions (the height of the clip 23 is as high as possible), making it easy to manufacture and install.

[0048] Furthermore, since the PCB substrate 11 is prone to generating poorly adhered debris on both sides during the separation process, while the punched holes in the middle (the latches 112 and the outer periphery of the PCB substrate 11 are spaced apart) are flat and free of debris, the position that engages with the latch 23 is located inside the PCB substrate 11. This prevents PCB debris from easily falling off when the latches 23 engage with the two sides of the PCB substrate 11, thus avoiding defects such as black spots when the lighting device 100 is lit.

[0049] Limiting ribs 26 are provided on both sides of the housing 21 in the width direction of the lamp housing 2. Preferably, the limiting ribs 26 on each side are located at the middle or near the middle in the length direction of the housing 21. There are two limiting ribs 26 on each side in the width direction, and each limiting rib 26 includes a rib extending along the height direction of the lamp housing 2 (see [reference needed] for the height direction). Figure 4 and Figure 5The first rib 261 extends in the direction indicated by arrow X shown in the diagram, and the second rib 262 is inclined in the height direction. The second rib 262 is located at the end of the first rib 261 near the top of the housing 21. The two first ribs 261 are arranged at intervals along the length direction of the housing 21. The second ribs 262 of the two limiting ribs 26 are inclined towards each other in the direction away from the lampshade 3 until they are connected, so that they converge together and the two limiting ribs 26 form a whole. The two limiting ribs 26 as a whole form the shape of a house.

[0050] Therefore, during the assembly of the lighting device 100, it first contacts the two second ribs 262 forming a triangle on the roof. During its descent, due to the guiding effect, its position gradually aligns. Unlike the two straight ribs, it does not directly deform the contact area between the limiting notch 201 formed on the mounting plate 200 and the limiting rib 26, thus forcibly inserting it and causing uneven gaps at both ends of the lamp housing 2 and the lampshade 3, affecting the overall quality of the device.

[0051] See Figure 4 and Figure 5 The lighting device 100 also includes a lead wire 5 electrically connected to the PCB substrate 11. One end wall of the housing 21 of the lamp housing 2 along its length is a lead wire end 211, with a lead wire outlet 24. The lead wire 5 extends from the lead wire outlet 24 to connect to the control device of the range hood for power supply and control. The lead wire end 211 with the lead wire outlet 24 is divided into a first wall portion 2111 and a second wall portion 2112 along the height direction of the lamp housing 2. The first wall portion 2111 is near the top of the housing 21, while the second wall portion 2112 is near the lampshade 3. The lead wire outlet 24 is located in the first wall portion 2111, and the draft angle of the first wall portion 2111 is greater than that of the second wall portion 2112. Preferably, the draft angle of the first wall portion 2111 is 32° to facilitate the ejection of the wire outlet 24 from the top and bottom of the mold, and the draft angle of the second wall portion 2112 is 2° to facilitate smooth demolding without affecting the distance between the lamp board 1 and the two ends of the lamp housing 2. This also allows the PCB substrate 11 to be as long as possible within a limited space, thereby minimizing the distance between the outermost lamp bead 12 and the end of the lamp housing 2.

[0052] The first wall portion 2111 has a first chamfer 2113 formed on the outer side of the upper edge of the outlet 24, and the first wall portion 2111 has a second chamfer 2114 formed on the inner side of the lower edge of the outlet 24. This helps to increase the distance between the mold and the upper and lower edges of the outlet 24, making it easier to eject the mold under the same draft angle.

[0053] Lead wire 5 passes through the back of PCB substrate 11 and is soldered on the front (the side with LED beads 12). The lead wire is positioned between two LED beads 12, rather than soldered to the end of PCB substrate 11, so as to avoid affecting the distance from the outermost LED bead 12 to the end of the lamp housing 2.

[0054] The top of the housing 21 of the lamp housing 2, corresponding to the lead wire 5, is also equal to or slightly lower than the head 411 of the screw 41 that fixes the retaining ring 4 (i.e., not exceeding the head 411 of the screw 41 in the height direction), so as to leave space for the bending of the lead wire 5 and facilitate installation.

[0055] The housing 21 of the lamp housing 2 can be designed asymmetrically at both ends in the length direction (the wire outlet end and the non-wire outlet end, respectively). The non-wire outlet end 212, which is opposite to the wire outlet end 211, can be molded at a small angle (such as the second wall 2112) or a large angle (such as the first wall 2111) as a whole, so as not to affect the length of the PCB substrate 11.

[0056] The LED beads 12 on the PCB substrate 11 are arranged in an equidistant, asymmetrical manner along the length of the PCB substrate 11. Starting from the end near the cable outlet 24, after determining the size of the outermost LED bead 12 according to the dimensions of the PCB substrate 11, LED beads are arranged equidistantly towards the non-cable outlet end. Because the lamp housing 2 at the non-cable outlet end adopts a small-angle draft molding (in this embodiment, a small-angle draft molding is used), the distance from the outermost LED bead 12 at the non-cable outlet end 212 to the center of the lampshade 3 (the distance measured along the length of the lampshade 3 by projecting it onto the surface of the lampshade 3) can be slightly greater than the distance from the outermost LED bead 12 near the cable outlet end 211 to the center of the lampshade 3 (the distance measured along the length of the lampshade 3 by projecting it onto the surface of the lampshade 3). As a result, the light-emitting area along the length of the lampshade 3 can be maximized, and the light-emitting effect can be maximized.

[0057] See Figure 8 The lamp housing 2 has an ultrasonic welding rib 25 formed on the open side of the housing 21 for ultrasonic welding. The ultrasonic welding rib 25 is annular. A limiting groove 31 is formed at the position of the lampshade 3 corresponding to the ultrasonic welding rib 25, and the ultrasonic welding rib 25 can be inserted into the limiting groove 31. This double-stop method (both the inner and outer circumferences of the ultrasonic welding rib 25 limit the lampshade 3) can eliminate the drawback of adding a ring rib to the lampshade 3 and failing to effectively limit the movement when it fits inside the lamp housing 2. The bottom surface of the housing 21 of the lamp housing 2 forming the ultrasonic welding rib 25 is raised to reduce the distance between the wall surface of the limiting groove 31 of the lampshade 3 and the edge of the lampshade 3, making the dark area around the lighting device 100 smaller. The distance between the inner side of the limiting groove 31 and the outer edge of the lampshade 3 is preferably 3-4 mm, so that while ensuring a reasonable size of the ultrasonic structure, the inner side of the limiting groove 31 corresponds to the outer side of the wall surface of the housing 21.

[0058] Furthermore, a limiting rib can be added inside the limiting groove 31. This serves two purposes: firstly, it limits the ultrasonic wave action of the lamp housing 2, and secondly, it increases the adhesive space, making the product less prone to adhesive overflow. This allows for the design of a larger amount of adhesive overflow, resulting in a better ultrasonic wave effect. At the same time, the limiting groove 31 effectively protects the ultrasonic wave rib 25, making it less susceptible to corrosion from oil and cleaning agents, thus increasing its reliability and extending its lifespan.

Claims

1. A lighting device, comprising: The lamp board (1) includes a PCB substrate (11) and lamp beads (12) disposed on the PCB substrate (11); The lamp housing (2) includes a housing (21) with an opening on one side, and the lamp plate (1) is disposed inside the housing (21); The lampshade (3) is disposed at the opening of the housing (21); and A retaining ring (4) is used for mounting to an external mounting base. A screw post (22) is formed in the top of the lamp housing (21) away from the lampshade (3) and facing towards the lampshade (3). The retaining ring (4) and the lamp housing (2) are fixed by a screw passing through the retaining ring (4) and into the screw post (22). The lamp housing (2) is characterized by: A through hole (111) is provided on the PCB substrate (11) at the position corresponding to the screw post (22), and part of the screw post (22) passes through the through hole (111).

2. The lighting device according to claim 1, characterized in that: The lamp housing (2) also includes a buckle (23), which is located on the top inner side of the housing (21) away from the lampshade (3). The PCB substrate (11) is provided with a slot (112), and the buckle (23) passes through the slot (112) and is engaged and fixed with the PCB substrate (11).

3. The lighting device according to claim 2, characterized in that: The bayonet (112) is arranged at intervals with the outer peripheral edge of the PCB substrate (11).

4. The lighting device according to claim 2, characterized in that: The top of the housing (21) is at least at the same height as or higher than the head (411) of the screw (41) protruding from the circlip (4) at the location where the buckle (23) is set.

5. The lighting device according to claim 1, characterized in that: Limiting ribs (26) are provided on both sides of the housing (21) of the lamp housing (2) in the width direction. There are two limiting ribs (26) on each side. Each limiting rib (26) includes a first rib (261) and a second rib (262). The second rib (262) is located at the end of the first rib (261) near the top of the housing (21). The two first ribs (261) are arranged at intervals along the length direction of the housing (21). The second ribs (262) of the two limiting ribs (26) are inclined towards each other in the direction away from the lamp cover (3) until they are connected, so that the two limiting ribs (26) are integrated.

6. The lighting device according to claim 1, characterized in that: The lighting device (100) also includes a lead wire (5) electrically connected to the PCB substrate (11). One end of the housing (21) of the lamp housing (2) along its length is a lead wire end (211). The lead wire end (211) is provided with a lead wire port (24), and the lead wire (5) is led out from the lead wire port (24).

7. The lighting device according to claim 6, characterized in that: Along the height direction of the lamp housing (2), the outlet end (211) is divided into a first wall portion (2111) and a second wall portion (2112). The first wall portion (2111) is close to the top of the housing (21), while the second wall portion (2112) is close to the lamp cover (3). The outlet (24) is located in the first wall portion (2111), and the draft value of the first wall portion (2111) is greater than that of the second wall portion (2112).

8. The lighting device according to claim 7, characterized in that: The end of the housing (21) opposite to the wire outlet (211) in the length direction is the non-wire outlet (212). The LED beads (12) on the PCB substrate (11) are arranged at equal intervals along the length direction of the PCB substrate (11). The draft value of the non-wire outlet (212) is less than the draft value of the first wall portion (2111) of the wire outlet (211). The distance between the LED bead (12) closest to the edge of the non-wire outlet (212) and the center of the lamp cover (3) is greater than the distance between the LED bead (12) closest to the edge of the wire outlet (211) and the center of the lamp cover (3).

9. A range hood, characterized in that: The application includes a lighting device as described in any one of claims 1 to 8.

10. A range hood, characterized in that: The application includes the lighting device as described in claim 5, wherein the range hood includes a mounting plate (200) serving as the external mounting base, the mounting plate (200) including a limiting notch (201) that mates with a limiting rib (26).

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