CN111288391A - Small night lamp and control method thereof - Google Patents

Abstract

The invention provides a small night lamp, comprising: a flexible, partially spherical upper housing, the walls of the upper housing defining a first interior cavity and having a flat bottom; the base ring comprises a ring body, a lampshade arranged on the first side of the ring body and a hollow cylinder arranged on the second side of the ring body; a partially spherical bottom cap defining a second interior cavity and having an engagement surface. The base ring is configured to simultaneously form an engagement with the upper cover and the bottom cover such that the engagement surfaces of the bottom portion of the upper cover and the bottom cover abut, thereby collectively forming a complete sphere from the upper cover and the bottom cover. The base ring and ring body and lamp housing are in the first interior cavity and the hollow cylinder is in the second interior cavity. The light emitting assembly is located inside the hollow cylinder. The invention also provides a method for controlling the small night lamp.

Description

Small night lamp and control method thereof

Technical Field

The invention relates to a night lighting tool, in particular to a small night lamp. The invention also relates to a method for controlling the small night lamp.

Background

A small night light is a device used to provide illumination to people at night, and is commonly used in living rooms, corridors, aisles, and bedrooms, and is typically fixed to a wall. In recent years, small night lights have become increasingly popular for use in bedrooms, where they are typically mounted on the head of a bed to provide illumination to the nightuser.

Conventional small night lights have a mechanical switch that requires the user to turn on or off manually. However, this is obviously inconvenient as the user sleeping on the bed needs to reach for operating the switch. There are also a large number of small night lights on the market that use voice operated switches. Thus, the user can turn on or off the small night lamp by making sound without getting up, which provides convenience to a certain extent. However, such a voice-activated nightlight is easily accidentally activated due to the presence of ambient noise, resulting in undesirable turning on or off.

In addition, current small night lights contain many parts, resulting in complex assembly processes. Moreover, the appearance of the small night lamp is difficult to realize beauty due to the existence of the mounting screw. In addition, for the existing small night light, the control experience of the user is very poor, and the user cannot easily use and adjust the size of the light.

Disclosure of Invention

The present invention aims to provide an improved small night light which can be easily turned on/off by a user and adjusted in light emission luminance. In addition, the small night lamp has compact structure and beautiful appearance. The invention also provides a method for controlling the small night lamp.

According to a first aspect of the present invention, there is provided a small night light comprising: a flexible, partially spherical upper housing, the walls of which define a first interior cavity and have a flat bottom; the base ring comprises a ring body, a lampshade arranged on the first side of the ring body and a hollow cylinder arranged on the second side of the ring body; a partially spherical bottom cap defining a second interior cavity and having an engagement surface; and a light emitting assembly. The base ring is configured to simultaneously form an engagement with the upper cover and the bottom cover such that the bottom portion of the upper cover abuts the engagement surface of the bottom cover, thereby forming a complete sphere from the upper cover and the bottom cover. The ring body and the lamp shade of the base ring are positioned in the first inner cavity, and the hollow cylinder is positioned in the second inner cavity. The light emitting assembly is located inside the hollow cylinder.

In one embodiment, the base extends radially inwardly to define an annular pocket in the first interior cavity. Wherein the ring body is engaged with the slot.

In one embodiment, an annular groove is formed in the bottom portion for dividing the bottom portion into an outer portion and an inner portion, wherein a plurality of spaced apart bosses are provided on the inner portion.

In one embodiment, the boss extends beyond the base and is provided with a radially inwardly extending lobe at its root.

In one embodiment, a plurality of radially outwardly projecting tongues are provided on the outer circumference of the cylindrical body of the base ring, so that an annular recess is formed between the tongues and the base ring. A first tooth is arranged between two adjacent clamping tongues, and a notch capable of allowing the boss to pass through is arranged on each clamping tongue.

In one embodiment, the bottom cap has an outwardly extending annular vertical wall on the engagement surface configured to extend into and mate with the annular groove.

In one embodiment, a plurality of connectors are disposed in the second interior cavity of the bottom cap. Each of the connectors includes an arc plate at an inner side and a plurality of ribs connecting the arc plate with the vertical wall. The rib, the arcuate plate, and the vertical wall collectively define at least one recess for receiving a corresponding boss. Wherein a second tooth engageable with the first tooth is further provided on the inner side of the arc plate.

In one embodiment, the light emitting assembly includes a control unit, a lamp bead mounted on the control unit, and a battery. And a plurality of supporting pieces are arranged in the second inner cavity of the bottom cover. The control unit is mounted on the support and the battery is mounted within a space defined by the support.

In one embodiment, the control unit includes a status sensor configured to deactivate the light bead when the bottom cover is facing downward and to deactivate the light bead when the bottom cover is facing upward.

In one embodiment, the status sensor comprises two toggle switches mounted on opposite surfaces of the control unit, respectively. Wherein the first toggle switch is configured to cause the light bead not to emit light when the bottom cover is facing downward, and the second toggle switch is configured to cause the light bead to emit light when the bottom cover is facing upward.

In one embodiment, the state sensor is a gyroscope.

In one embodiment, the lamp enclosure is spaced apart from an inner surface of the upper enclosure. The control unit includes a conductive spring extending through the lamp housing into the first interior cavity. The upper cover can be pressed into contact with the conductive spring so that the control unit is in a power-on state.

In one embodiment, the lamp housing contains a light homogenizing powder.

In one embodiment, the bottom cap has a central aperture with a removable plug disposed therein.

According to a second aspect of the present invention, there is provided a method for controlling a small night light as described above, comprising the steps of: pressing the upper cover into contact with the conductive spring, thereby placing the control unit in an energized state; placing the small night lamp in a state that the bottom cover faces downwards, so that the lamp beads do not emit light; and will little night-light place become bottom state up, from this the lamp pearl is luminous.

In one embodiment, the method further comprises the steps of: the control unit is powered off by tapping the small night light three times in succession.

In one embodiment, the method further comprises the steps of: and the small night lamp is tapped twice continuously to enable the lamp bead to emit light from light to dark in a period of time until the lamp bead is extinguished.

In one embodiment, the method further comprises the steps of: the upper cover is pressed to be in contact with the conductive spring for a period of time, so that the light emitted by the lamp beads is gradually changed from cold color to warm color in the period of time.

Drawings

The invention will be explained in more detail below with reference to the drawings and by means of exemplary embodiments which are schematic. In the figure:

FIG. 1 schematically illustrates an exploded view of a small night light according to the present invention;

fig. 2 schematically shows a perspective view of the upper cover of the small night light according to the present invention, seen from below;

FIG. 3 shows a cross-sectional view of the upper housing of FIG. 2;

FIG. 4 schematically illustrates a perspective view of the base ring of the nightlight according to the present invention;

FIG. 5 shows a cross-sectional view of the susceptor ring of FIG. 4;

fig. 6 schematically illustrates a perspective view of a bottom cover of the small night light according to the present invention;

FIG. 7 shows a cross-sectional view of the bottom cap of FIG. 6;

FIG. 8 shows a cross-sectional view of an assembled small night light according to the present invention; and

fig. 9 shows another cross-sectional view of an assembled small night light according to the present invention.

Like reference numerals refer to like parts throughout the several views of the drawings. The figures are not drawn to scale.

Detailed Description

Fig. 1 shows an exploded view of a small night light 100 according to the present invention. As shown in fig. 1, the night light 100 according to the present invention mainly includes an upper cover 10, a base ring 30, a bottom cover 50, and a light emitting assembly 90. The light emitting assembly 90 mainly includes a control unit 70, a lamp bead 78 and a battery 80, which are electrically connected to each other.

Fig. 2 and 3 show a perspective view and a cross-sectional view, respectively, of the upper cover 10 of the small night light 100 according to the present invention. As shown in fig. 2, the upper cover 10 is made of a flexible silicone material and formed in a substantially partial spherical, e.g., ellipsoidal, shape. The inner surface 12 of the upper housing 10 defines a first interior cavity 14. The wall 13 of the upper housing 10 extends radially inwardly at its bottom 15, so that an annular catch 28 is formed in the first interior chamber 14 of the upper housing 10. The bottom 15 has a flat surface for mating with an engagement surface 64 of a bottom cap to be described later, in which a circumferentially extending annular groove 16 is formed. The annular groove 16 divides the bottom 15 of the upper housing 10 into an outer portion 18 and an inner portion 20. Several projections 22 are provided on the inner part 20, which projections 22 are preferably arranged evenly spaced apart in the circumferential direction. Although 8 bosses 22 are shown in fig. 2, it will be readily appreciated that the number of bosses 22 may be arbitrarily selected as desired. As shown in fig. 3, each boss 22 has a radially inwardly extending circular protrusion 25 at its root, the function of which will be described later.

Fig. 4 and 5 show a perspective view and a cross-sectional view, respectively, of the base ring 30 of the nightlight 100 according to the invention. As shown in fig. 4, the base ring 30 includes a ring body 32, and a hollow cylindrical body 40 extending axially from the ring body 32. As shown in fig. 5, a dome-shaped lamp cover 35 is provided on the ring body 32 in a direction opposite to the cylinder 40. The housing 35 contains a light-homogenizing powder for homogenizing the light emitted from the lamp beads 78 as described below, thereby enabling soft light to be obtained. The dome-shaped lamp housing 35 is sized to be received within the first interior cavity 14 of the upper housing 10 and is spaced from the interior surface 12 of the upper housing 10 (see fig. 8). The lamp housing 35 is preferably formed integrally with the ring 32, for example by ultrasonic heat-sealing.

A plurality of radially outwardly extending latches 42 are provided on the outer periphery of the cylindrical body 40 of the base ring 30. In fig. 4, four latch tongues 42 are shown, which are uniformly arranged in the circumferential direction, however, it is easily understood that the number of the latch tongues 42 can be arbitrarily selected as required. The latch 42 is arranged at a distance from the ring body 32 such that a recess 37 is formed between the latch 42 and the ring body 32. Each latch 42 is provided with at least one notch 44 in its middle portion for passage of the boss 22 therethrough when the base ring 30 and the upper shell 10 are mated for later mating with the recess 65 in the bottom cover 50. In addition, each latch 42 is provided with ribs 45 on both sides thereof for improving strength. Between two adjacent latches 42, a first tooth 46 is provided on the outer surface of the cylindrical body 40 of the base ring 30, the function of which is described below.

Fig. 6 and 7 show a perspective view and a cross-sectional view, respectively, of the bottom cover 50 of the night light 100 according to the present invention. The bottom cover 50 is made of hard plastic, such as ABS. The bottom cover 50 is likewise formed in the shape of a generally part-sphere, such as an ellipsoid, and when assembled with the base ring 30 and the upper housing 10, the engagement surface 64 of the bottom cover 50 interfaces with the bottom 15 of the upper housing 10 to form a complete ellipsoid, thereby providing an attractive appearance. At this time, the base ring 30 is completely hidden inside the upper case 10 and the bottom cover 50, as shown in fig. 8 and 9.

The inner surface 52 of the bottom cover 50 defines a second interior cavity 54 in which a plurality of support posts 55 are disposed. The control unit 70 in the light emitting assembly 90 is supported at the upper end of the support column 55. In the illustrated embodiment, the control unit is configured as a circuit board. The support post 55 is preferably hollow and internally threaded. The control unit 70 is thus secured to the support column 55 by means of screws 72, as shown in figure 9. A lamp bead 78 for emitting illumination light is mounted on the control unit 70. The lamp beads 78 are preferably low lumen lamp beads.

The battery 80 in the light emitting assembly 90 is disposed within the space defined by the support posts 55 for powering the control unit 70. Thus, since the battery 80 is accommodated in the space supported by the support posts 55, the space in the second inner cavity 54 of the bottom cover 50 is fully utilized, so that the entire structure is very compact. In one embodiment, the battery 80 is preferably a polymer battery, which is small and highly safe. In an embodiment not shown, a charging interface is also provided in the second interior cavity 54 of the bottom cover 50 for charging the battery 80.

The control unit 70 is used to provide control of the nightlight 100, as will be described in detail below. As shown in fig. 1, 8 and 9, a conductive spring 75 is provided on the control unit 70, the upper end of which passes through the lamp housing 35 into the first interior chamber 14 of the upper housing 10. When the flexible upper cover 10 is pressed, the upper cover 10 can be in contact with the conductive spring 75.

As shown in fig. 7, the engagement surface 64 of the bottom cover 50 is formed in a flat surface. An annular vertical wall 62 extends axially from the engagement surface 64. A plurality of connectors 58 are also disposed in the second interior cavity 54 of the bottom cover 50. These coupling members 58 are uniformly arranged in the circumferential direction and correspond in number to the number of first teeth 46 on the outer surface of the cylindrical body 40 of the base ring 30. Each of the coupling members 58 includes an arc-shaped plate 59 at an inner side, and a plurality of ribs 57 connecting the arc-shaped plate 59 with a vertical wall 62 of the bottom cover 50. With this construction, the arcuate plate 59, the vertical wall 62 and the rib 57 collectively define a plurality of recesses 65 for receiving the bosses 22 of the upper housing 10. A second tooth 60 is also provided on the inner side of the arc-shaped plate 59.

As shown in fig. 7, an opening 92 is provided at the bottom of the bottom cover 50, and a plug 95 (see fig. 1) is received in the opening 92. By removing the plug 95, the battery 80 can be charged using the charging interface. It will be readily appreciated that the plug 95 may be made of any suitable material, such as silicone, and is contoured to conform to the outer surface of the bottom cap 50, thereby forming a smooth, unitary surface.

Fig. 8 and 9 are two different angle cross-sectional views showing the assembled state of the small night light 100 according to the present invention. During assembly, the base ring 30 is first installed within the first interior chamber 14 of the upper housing 10. At this time, as shown in fig. 9, the ring body 32 of the base ring 30 enters the first cavity 14 of the upper housing 10 and is engaged with the engaging groove 28 of the upper housing 10. At the same time, the bottom 15 of the upper shell 10 is inserted again into the recess 37 formed between the ring body 32 and the latch 42 of the base ring 30. That is, on the one hand, the ring body 32 forms a fit with the latching groove 28 of the upper shell 10 and, on the other hand, the bottom 15 of the upper shell 10 forms a fit with the recess 37 of the base ring 30, which thus forms an effective, secure positioning. In this manner, the upper shell 10 and the base ring 30 are reliably assembled together.

The subassembly formed by the upper housing 10 and the base ring 30 is then mounted together to the bottom cover 50. At this point, the cylindrical body 40 of the base ring 30 is inserted into the second interior cavity 54 of the bottom cap 50 and the first teeth 46 on the cylindrical body 40 of the base ring 30 are brought into engagement with the second teeth 60 on the connecting member 58 of the bottom cap 50, as shown in FIG. 8. In this condition, the boss 22 in the upper housing 10 passes through the notch 44 in the latch 42 of the susceptor ring 30 into the recess 65 of the bottom cover 50, while the annular vertical wall 62 on the bottom cover 50 enters the annular groove 16 of the upper housing 10. Thus, in accordance with the present invention, with the particular configuration of the connector 58, it is possible to provide both the engagement between the first tooth 46 and the second tooth 60, and the engagement between the boss 22 and the recess 65. These two fits, together with the fit between the annular vertical wall 62 and the annular groove 16, allow the entire device to be securely assembled.

In addition, the boss 22 has an outwardly protruding circular protrusion 25 which serves as an undercut, thereby preventing the subassembly formed by the upper cover 10 and the base ring 30 from being pulled out of the bottom cover 50, and improving the stability of assembly.

As shown in fig. 8, in the assembled state, the cylindrical body 40 of the base ring 30 is inserted into the second interior cavity 54 of the bottom cap 50. Thus, the support column 55, the control unit 70, the battery 80, and the lamp bead 78 of the bottom cover 50 are accommodated inside the cylinder 40 and the lamp housing 35. This makes efficient use of the space within the device, making the device very compact as a whole.

After assembly, the base ring 30 is completely hidden inside the upper cover 10 and the bottom cover 50, so that the resulting night light 100 appears as a complete ellipsoid without any exposed parts. Therefore, the small night light 100 according to the present invention is beautiful in appearance while being convenient to carry.

It should be noted that although the external shape of the night light 100 is described as an ellipsoid, it is understood that the night light 100 can be formed as a sphere with any shape. More importantly, the term "sphere" herein is intended to encompass any shaped object, including pyramids, cones, cuboids, and the like. Also, the upper cover 10 and the bottom cover 50 of the small night light 100 of the present invention may be formed to have different shapes as long as they can be fitted to each other. For example, in one embodiment, not shown, the upper housing 10 is formed as a pyramid, and the bottom cover 50 is formed as a rectangular parallelepiped.

The method of operation of the small night light 100 according to the present invention will now be described.

In the initial state, the control unit 70 (i.e., the circuit board) is actuated into the energized state by pressing the flexible upper housing 10 to bring the inner surface 12 of the upper housing 10 into contact with the conductive spring 75 extending into the first interior cavity 14 of the upper housing 10. In this state, the control unit 70 can control the lamp bead 78. The control unit 70 includes a status sensor. A specific example of a status sensor, namely a toggle switch 82, is shown in a very schematic manner in fig. 1. The tumbler switch 82 can be, for example, a commercially available two-ball tumbler switch, which can be integrated on a circuit board. When the nightlight 100 is in the first state, for example, the bottom cover 50 is facing downward, the toggle switch 82 issues a first command, so that the light bead 78 does not emit light. However, when the nightlight 100 is flipped over to be in the second state, i.e. the bottom cover 50 is facing upwards, the flip switch 82 issues a second command, so that the light bead 78 starts to emit light.

In a preferred embodiment, the control unit 70 includes two toggle switches 82, with a first toggle switch mounted on a front side of the control unit 70 (e.g., circuit board) and a second toggle switch mounted on a back side of the control unit 70 (e.g., circuit board). In this case, the first toggle switch is dedicated to detecting a first state of the nightlight 100 (i.e., bottom cover 50 facing downward), while the second toggle switch is dedicated to detecting a second state of the nightlight 100 (i.e., bottom cover 50 facing upward). When the small night lamp 100 is in the first state, the first reversing switch sends out a first instruction, so that the lamp bead 78 does not emit light; and when little night-light 100 is in the second state, second upset switch sends the second instruction for lamp pearl 78 begins to give out light. Therefore, the state detection precision of the tumbler switch can be effectively improved, and the accidental touch is avoided.

In one embodiment, not shown, the state sensor is a gyroscope.

By providing a status sensor in the nightlight 100, the user is allowed to easily achieve illumination by flipping the nightlight 100. In this case, the user is not required to extend his or her arm to actuate the mechanical switch, nor is accidental actuation by background noise. Therefore, the small night light 100 according to the present invention is very simple to operate.

In another aspect, the control unit of the present invention is configured to be de-energized by certain actions. This action is for example three taps of the device in succession. In response to the three times of slapping, the control unit of the small night lamp 100 is powered off, and no matter whether the device is turned over or not, the lamp beads 78 do not emit light. In this state, the small night light 100 can be conveniently carried without worrying about the accidental light emission.

In addition, the control unit of the present invention is also configured to adjust the brightness and color temperature of light by detecting the contact of the upper cover 10 with the lamp cover 25. When the upper cover 10 is pressed into contact with the lamp housing 25 for a long time, the control unit may change the brightness and color temperature of the light emitted from the lamp bead 78 based on this contact state. For example, when the nightlight 100 is initially turned on, the light bead 78 may be made to emit a warm color of light, which may be more conducive to the user's eyes being just opened to accommodate the light. After a period of time, the light beads 78 emit either warm or cool colored light to provide better lighting conditions for the user. Meanwhile, the control unit may adjust the brightness of the light based on the inverse gamma curve. In a preferred embodiment, the small night light 100 according to the present invention initially provides very low brightness when turned on, so the control unit can provide up to 2100 different levels of brightness. By adjusting the brightness and color temperature of the light simultaneously, the small night light 100 according to the present invention can provide very fine and nearly stepless light adjustment. The relationship between the brightness and color temperature of the emitted light of the lamp bead 78 and the contact time of the upper housing 10 and the lamp housing 25 can be selected according to the specific application needs.

According to the present invention, a control mode for automatically turning off the small night light 100 is also provided. For example, by tapping the small night light 100 twice, the light bead 78 can automatically adjust the light from light to dark until it goes out. The specific time from light to dark until light off of the lamp bead 78 can also be set according to specific application needs.

Those skilled in the art will readily appreciate that the above control scheme may be implemented using well-known control principles and techniques.

Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and do not limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing examples, or that equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims (10)

1. A small night light (100), comprising:

a flexible, partially spherical upper casing (10), the wall (13) of said upper casing (10) defining a first internal cavity (14) and having a flat bottom (15);

the base ring (30) comprises a ring body (32), a lampshade (35) arranged on the first side of the ring body (32), and a hollow cylinder (40) arranged on the second side of the ring body (32);

a partially spherical bottom cap (50) defining a second interior cavity (54) and having an engagement surface (64); and

a light-emitting component (90),

wherein the base ring (30) is configured to simultaneously form a joint with the upper cover (10) and the bottom cover (50) such that the bottom (15) of the upper cover (10) and the joint surface (64) of the bottom cover (50) are butted, thereby forming a complete sphere by the upper cover (10) and the bottom cover (50), wherein the ring body (32) and the lamp cover (35) of the base ring (30) are in the first inner cavity (14) and the hollow cylinder (40) is in the second inner cavity (54), and the light emitting assembly (90) is inside the hollow cylinder (40).

2. The small night light (100) of claim 1, wherein the base (15) extends radially inwardly to define an annular catch (28) in the first interior chamber (14), wherein the ring (32) engages the catch (28);

an annular groove (16) is formed in the bottom (15) for dividing the bottom (15) into an outer portion (18) and an inner portion (20), wherein a plurality of bosses (22) spaced apart from each other are provided on the inner portion (20);

the boss (22) extends beyond the base (15) and is provided at its root with a radially inwardly extending circular protrusion (25).

3. The small night light (100) according to claim 2, wherein a plurality of radially outwardly projecting catches (42) are provided on the outer periphery of the cylindrical body (40) of the base ring (30) so as to form an annular recess (37) between the catches (42) and the base ring (30), wherein a first tooth (46) is provided between two adjacent catches (42), and wherein a notch (44) is provided on each catch (42) for allowing the boss (22) to pass therethrough;

the bottom cap (50) has an engagement surface (64) with an outwardly extending annular vertical wall (62) configured to extend into and engage the annular groove (16);

a plurality of connecting members (58) are provided in the second interior cavity (54) of the bottom cover (50), each connecting member (58) comprising an arcuate plate (59) on the inside and a plurality of ribs (57) connecting the arcuate plate (59) to the vertical wall (62), the ribs (57), the arcuate plate (59) and the vertical wall (62) together defining at least one recess (65) for receiving a respective boss (22), wherein second teeth (60) engageable with the first teeth are also provided on the inside of the arcuate plate (59).

4. The nightlight (100) of claim 1, wherein the light assembly (90) comprises a control unit (70), a light bead (78) mounted on the control unit (70), and a battery (80);

a plurality of supports (58) are disposed in the second interior cavity (54) of the bottom cover (50), wherein the control unit (70) is mounted on the supports (58) and the battery (80) is mounted within a space defined by the supports (58);

the control unit (70) includes a status sensor configured to deactivate the light bead (78) when the bottom cover (50) is facing downward and to deactivate the light bead (78) when the bottom cover (50) is facing upward.

5. The nightlight (100) of claim 4, wherein the status sensor comprises two toggle switches (82) mounted on opposite surfaces of the control unit (70), respectively, wherein a first toggle switch is configured to deactivate the light bead (78) when the bottom cover (50) is facing downward and a second toggle switch is configured to deactivate the light bead (78) when the bottom cover (50) is facing upward.

6. The small night light (100) of claim 4, wherein the light cover (35) is spaced from the interior surface (12) of the upper cover (10), the control unit (70) including a conductive spring (75), the conductive spring (75) extending through the light cover (35) into the first interior chamber (14), wherein the upper cover (10) is depressible into contact with the conductive spring (75) such that the control unit (70) is in an energized state.

7. A method for controlling a small night light according to any one of claims 1 to 6, comprising the steps of:

pressing the upper cover into contact with the conductive spring, thereby placing the control unit in an energized state;

placing the small night lamp in a state that the bottom cover faces downwards, so that the lamp beads do not emit light; and

will little night-light is placed into bottom state up, from this the lamp pearl is luminous.

8. The method of claim 7, further comprising the step of: the control unit is powered off by tapping the small night light three times in succession.

9. The method of claim 7, further comprising the step of: and the small night lamp is tapped twice continuously to enable the lamp bead to emit light from light to dark in a period of time until the lamp bead is extinguished.

10. The method of claim 7, further comprising the step of: the brightness of the light emitted by the lamp beads is gradually changed from dark to bright and the color temperature is gradually changed from warm to cold in the period of time by pressing the upper cover to be in contact with the conductive spring for a period of time.

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