CN222047676U - Low-attenuation small night lamp - Google Patents

Abstract

The utility model discloses a low-attenuation night lamp, which comprises a lamp holder, a support column, a lamp shade and an LED light source, wherein the LED light source comprises an inverted conical base body, radiating fins vertically arranged on the peripheral surface of the base body and an LED luminous plate; the lampshade comprises a lower bottom plate and an upper cover; the top surfaces of the lower bottom plate and the upper cover are respectively provided with a first through hole and a second through hole in a radial mode, the first through hole is close to the middle of the lower bottom plate, and the second through hole is close to the edge of the top surface; the first through holes and the second through holes are corresponding to gaps between the adjacent radiating fins, so that cold air enters the lamp shade through the first through holes, and the structure of the base body is in an inverted cone shape, and the position of the first through holes is close to the middle part, so that the cold air entering the lamp shade can flow upwards along the surfaces of the base body and the radiating fins, heat on the base body and the radiating fins is taken away, the heat is sent out by the second through holes, the radiating efficiency is improved, and the problem that the attenuation of the LED light source is increased due to the temperature rise is solved.

Description

Low-attenuation small night lamp

Technical Field

The utility model belongs to the technical field of lighting lamps, and particularly relates to a low-attenuation small night lamp.

Background

The small night lamp has soft light, and plays a role in guiding illumination in the dark. Often, the lamp is placed in rooms, hallways and other places to provide softer illumination at night; small night lights are also often used as the chang ming lights. Due to the popularization of LED lamps and the more energy-saving property of the LED lamps, the small night lamps often adopt LED beads as light sources; however, due to the sensitivity of the LED lamp beads to temperature, the higher the temperature is, the more serious the light attenuation of the LED lamp beads is, and the continuous long-time lighting of the small night lamps tends to cause the temperature aggregation, the temperature rise and the attenuation of the LED lamp beads.

Disclosure of Invention

The utility model aims to provide a low-attenuation small night lamp, which aims to solve the problem that the attenuation is serious due to overhigh temperature when the small night lamp works for a long time.

In order to solve the technical problems, the aim of the utility model is realized as follows:

The low-attenuation small night lamp comprises a lamp holder, a support column, a lamp shade and an LED light source, wherein the LED light source comprises an inverted conical substrate, radiating fins vertically arranged on the peripheral surface of the substrate and an LED light-emitting plate, and the LED light-emitting plate is attached to the end face of the large end of the substrate; the lampshade comprises a lower bottom plate and an upper cover, and the LED light source is positioned in a space enclosed by the upper cover and the lower bottom plate; the top surfaces of the lower bottom plate and the upper cover are respectively provided with a first through hole and a second through hole in a radial mode, the first through hole is close to the middle of the lower bottom plate, and the second through hole is close to the edge of the top surface; the first through holes and the second through holes are corresponding to gaps between the adjacent radiating fins, so that air flow enters the lampshade through the first through holes and flows upwards to the second through holes along the surfaces of the base body and the radiating fins to be discharged.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the lower bottom plate is provided with an annular bulge near the edge, and the lower edge of the upper cover is buckled on the annular bulge.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the outer peripheral surface of the annular bulge is provided with threads, and the lower edge of the upper cover is in threaded connection with the annular bulge.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the support column is hollow, and the threaded hole is axially communicated with the base body.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the upper ends of the support columns penetrate through the lower bottom plate and then are connected with the threaded holes formed in the middle of the base body in a threaded mode.

The above-mentioned scheme is based on and is a preferable scheme of the above-mentioned scheme: the support column is close to the side that the lamp shade is located is provided with the limiting plate, the lower plate compress tightly in between the limiting plate with the base member.

Compared with the prior art, the utility model has the following outstanding and beneficial technical effects: through improving the heat dissipation of LED light source, including improving the structure of base member and radiating fin, the position of radiating hole about the lamp shade, when the LED light source work, when the temperature risees, the first through-hole of lamp shade and second through-hole have formed similar "chimney" effect, hot air rises, discharge by the second through-hole, cold air gets into in the lamp shade through first through-hole, because the structure of base member is the back taper, and the position of first through-hole is close to the middle part, then the cold air that gets into in the lamp shade will flow upwards along the surface of base member and radiating fin, take away the heat on base member and the radiating fin, send out by the second through-hole, thereby the area of contact and the contact time of base member and radiating fin and air have been improved, the radiating efficiency has been improved, thereby the effectual temperature rise that produces when controlling the LED luminescent plate work, more effective reduction of its decay.

Drawings

FIG. 1 is a perspective view of the overall structure of the present utility model;

FIG. 2 is another angular perspective view of the overall structure of the present utility model;

FIG. 3 is a front elevational view of the overall structure of the present utility model;

FIG. 4 is a top view of the overall structure of the present utility model;

FIG. 5 is a cross-sectional view taken at A-A of FIG. 4;

FIG. 6 is a front view of an LED light source;

FIG. 7 is a perspective view of an LED light source;

Fig. 8 is another angular perspective view of an LED light source.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present application more apparent, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings in the embodiments, and it is apparent that the described embodiments are only some embodiments of the present application, but not all embodiments. All other embodiments, based on the examples given, which a person of ordinary skill in the art would obtain without making any inventive effort, are within the scope of the application.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

Referring to fig. 1-8 in detail, the application discloses a low attenuation night lamp, which comprises a lamp holder 10, a support column 20, a lampshade 30 and an LED light source 40, wherein the LED light source 40 comprises an inverted cone-shaped substrate 41, radiating fins 42 vertically arranged on the outer peripheral surface of the substrate 41 and an LED light-emitting plate 43, the LED light-emitting plate 43 is provided with a plurality of LED lamp beads 431, and the LED light-emitting plate 43 is attached to the end face of the large end of the substrate 41, so that heat of the LED light-emitting plate is conveniently transferred to the substrate 41. Wherein, the base 41 and the radiating fins 42 are preferably cast integrally with aluminum, and the upper end face and the lower end face of the base are milled to form planes by machining, and of course, copper can be adopted; the bonding surface between the LED light-emitting plate 43 and the upper end surface is coated with heat-conductive silicone grease, and then the LED light-emitting plate is fixed on the substrate by screw fixing or other fixing methods.

The lampshade 30 comprises a lower bottom plate 31 and an upper cover 32, and the LED light source 42 is positioned in a space enclosed by the upper cover 32 and the lower bottom plate 31; wherein, the upper cover 32 and the lower bottom plate 31 are preferably made of PC material, and the surface is frosted; the top surfaces of the lower bottom plate 31 and the upper cover 32 are respectively provided with a first through hole 311 and a second through hole 321 in a radial shape, the first through hole 311 is close to the middle part of the lower bottom plate 31, and the second through hole 321 is close to the edge of the top surface; the first through hole 311 and the second through hole 321 correspond to the gaps between the adjacent heat dissipation fins 42, so that the air flow enters the lamp housing 30 through the first through hole 311 and flows upwards to the second through hole 321 along the surfaces of the base 41 and the heat dissipation fins 42 to be discharged.

Further, in order to facilitate the connection between the upper cover 32 and the lower plate 31, in this embodiment, an annular protrusion 312 is preferably disposed at the position adjacent to the edge of the lower plate 31, and the lower edge of the upper cover 32 is buckled on the annular protrusion 312. It is of course also possible to screw the lower edge of the upper cover 32 to the annular projection 312 by providing a screw on the outer peripheral surface of the annular projection 312.

In order to further facilitate the assembly of the small night lamp, in this embodiment, the support column 20 is preferably hollow, the threaded hole 411 is axially penetrated by the base 41, so that a wire can be penetrated upwards through the base 10 of the hollow support column 20 and enter above the LED light source through the penetrated threaded hole 411, thereby welding the end of the wire with the power position of the LED light-emitting panel to realize electrical communication, and then the power on-off of the LED light-emitting panel can be realized by controlling the switch in a manner of arranging a charging power supply or an external power supply in the base 10 to realize the lighting or extinguishing of the LED light-emitting panel; the upper end of the support column 20 passes through the lower bottom plate 31 and is connected in a threaded hole 411 formed in the middle of the base body 41 in a threaded manner, so that the LED light source and the support column 20 are fixedly installed; of course, the fixed mounting of the lamp housing is considered, and for this purpose, in the present embodiment, the support column 20 is provided with the limiting plate 21 adjacent to the side where the lamp housing 30 is located, and the lower plate 31 is pressed between the limiting plate 21 and the base 41. Therefore, the LED light source 40 is screwed with the upper end of the support column 20 by screw threads, the lower bottom plate 31 is pressed and fixed, and the upper cover 32 is connected to the lower bottom plate 31, so that the installation and the fixation of the lampshade 30 can be realized; thus, the whole night lamp is assembled and installed.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims (6)

1. The utility model provides a little night-light of low attenuation, includes lamp stand (10), support column (20), lamp shade (30) and LED light source (40), its characterized in that: the LED light source (40) comprises an inverted conical substrate (41), radiating fins (42) vertically arranged on the outer peripheral surface of the substrate (41) and an LED light-emitting plate (43), and the LED light-emitting plate (43) is attached to the end face of the large end of the substrate (41); the lampshade (30) comprises a lower bottom plate (31) and an upper cover (32), and the LED light source (42) is positioned in a space enclosed by the upper cover (32) and the lower bottom plate (31); a first through hole (311) and a second through hole (321) are respectively distributed on the top surfaces of the lower bottom plate (31) and the upper cover (32) in a radial shape, the first through hole (311) is close to the middle part of the lower bottom plate (31), and the second through hole (321) is close to the edge of the top surface; the first through hole (311) and the second through hole (321) are corresponding to gaps between the adjacent radiating fins (42), so that air flow enters the lampshade (30) through the first through hole (311) and flows upwards to the second through hole (321) along the surfaces of the base body (41) and the radiating fins (42) to be discharged.

2. The low-attenuation night light of claim 1, wherein: the lower bottom plate (31) is provided with an annular bulge (312) adjacent to the edge, and the lower edge of the upper cover (32) is buckled on the annular bulge (312).

3. The low-attenuation night light of claim 2, wherein: the outer peripheral surface of the annular bulge (312) is provided with threads, and the lower edge of the upper cover (32) is in threaded connection with the annular bulge (312).

4. The low-attenuation night light of claim 1, wherein: the support column (20) is hollow, and a threaded hole (411) is axially penetrated by the base body (41).

5. The low-attenuation night light of claim 4, wherein: the upper end of the support column (20) passes through the lower bottom plate (31) and is connected in a threaded hole (411) formed in the middle of the base body (41) in a threaded mode.

6. The low-attenuation night light of claim 1, wherein: the support column (20) is close to the side where the lampshade (30) is located and is provided with a limiting plate (21), and the lower bottom plate (31) is tightly pressed between the limiting plate (21) and the base body (41).