TWM462332U - LED lamp - Google Patents

Description

LED light

The present invention relates to an LED lamp having an LED chip as a light source built therein.

In recent years, in place of an incandescent light bulb that consumes a large amount of power, there is a growing demand for an LED lamp that uses an LED that consumes less power as a light source.

In general, such an LED lamp includes a metal heat sink such as aluminum having excellent thermal conductivity, a socket mounted at one end of the heat sink, a hemispherical top portion, and a light transmissive member attached to the other end of the heat sink. a lamp cover made of glass or plastic material, a module substrate on which an LED chip is mounted, and a lighting circuit for supplying electric power to the LED chip; the LED lamp includes: mounting the module substrate and the lighting circuit on the heat sink; A structure in which an LED chip is covered with a lamp cover to electrically connect the lighting circuit to the lamp holder.

[Previous Technical Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2011-70972

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2011-82132

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2011-90828

[Patent Document 4] Japanese Patent Laid-Open Publication No. 2011-91033

The light source of the white heat bulb, that is, the light emitted by the filament, diffuses toward the surroundings and illuminates the surroundings evenly. However, the light emitted by the LED chip used as the light source of the LED lamp has high directivity and can be irradiated with strong light. The characteristics of the narrow area in front.

Moreover, the filament of the incandescent bulb will reach a high temperature of 2000 degrees when it is lit, so that the surface of the lampshade covering the filament becomes hot and becomes hot, and may be burnt if touched.

In contrast, the light source of the LED lamp is also the LED chip, and the heat release when it is lit is very low compared with the filament. Therefore, when lighting, the temperature of the heat sink will only rise by several tens of degrees. Compared with the white heat bulb, the characteristic is that the temperature of the lampshade when it is lit can be contacted.

The present invention focuses on the light source of the LED lamp, that is, the high directivity and low heat release of the LED chip, and utilizes its characteristics to provide an LED lamp having a novel use.

The novelty described in claim 1 is an LED lamp comprising: a heat sink; a lamp holder attached to one end of the heat sink; a module substrate on which the LED chip is mounted; and a lighting circuit for supplying electric power to the LED chip; The group substrate is fixed on the other end surface of the heat dissipating body, and the lighting circuit is installed in the heat dissipating body, and the lighting circuit is electrically connected to the lamp socket; and the other end surface of the heat dissipating body is provided with: a card cover for locking the lampshade a locking portion at the open end; A diffusion member that diffuses light emitted from the LED chip toward the periphery is fixed to the other end surface of the heat sink, and the diffusion member is disposed to face the LED wafer. When the lamp cover is covered with the diffusion member, the locking portion is used. The lamp cover is detachably locked to the other end surface of the heat sink.

According to a second aspect of the invention, in the LED lamp of the first aspect, the latching portion surrounds the diffusing member, and an annular groove is formed on the other end surface of the heat dissipating body, and the lampshade is formed The open end is embedded in the annular groove, and the lamp cover is detachably locked to the other end surface of the heat sink.

According to a third aspect of the invention, in the LED lamp of the first aspect, the locking member is provided with an annular rib on the other end surface of the heat dissipating body so as to surround the diffusion member. The open end of the lamp cover covers the annular rib, and the lamp cover is detachably locked to the other end surface of the heat sink.

According to a fourth aspect of the invention, in the LED lamp of the first aspect, the locking member is provided with an annular rib on the other end surface of the heat dissipating member as the locking member. The outer peripheral portion of the opening end portion of the globe abuts against the annular ridge, and the cover is detachably locked to the other end surface of the heat sink.

According to the novelty described in claim 1, since the high directivity of the light emitted from the LED is alleviated by the diffusion member, it can be uniformly illuminated like a white heat bulb. Bright LED lights around. Further, a locking portion is provided on the other end surface of the heat sink that fixes the LED chip or the diffusion member, and the locking portion can detachably lock the lamp cover to the other end surface of the heat sink, so that it is not only the lamp cover of the conventional product. You can also use your own hand-made lampshade to create LED lights that match your personal interests and expand the use of LED lights.

The novel, even if the LED chip is lit, does not heat the lampshade to a high temperature like a white heat bulb, so even if the hand touches the lampshade, there is no need to worry about burns. Therefore, the lamp cover can be easily replaced by hand.

According to the novelty of the second aspect, when the opening end of the globe is fitted into the annular groove, the cover can be detachably locked to the other end surface of the radiator.

According to the present invention, since the annular groove having a simple structure is formed as the locking portion, the use of the LED lamp can be expanded at low cost.

According to the novelty of claim 3, the cover can be detachably locked to the other end surface of the heat sink by covering the open end of the globe with the annular ridge.

According to the novelty of the invention of claim 4, the outer peripheral portion of the opening end portion of the globe is brought into contact with the annular ridge, whereby the cover can be detachably locked to the other end surface of the heat sink.

According to the novelty described in the claims 3 and 4, since the annular ridge having a simple structure is formed as the locking portion, the use of the LED lamp can be expanded at low cost.

[Example 1]

Hereinafter, the present invention will be described with reference to the drawings, and the LED lamp 10 of the first embodiment of the present invention is shown in Figs. 1 and 2 . The LED lamp 10 includes a heat sink 11 made of a metal material such as aluminum which is excellent in heat conductivity and heat dissipation, and a socket 12 which is attached to the lower end portion of the heat sink 11 and has a shape and size according to international standards. .

The heat sink 11 has an inverted truncated cone shape, and a plurality of blades 11a for increasing the surface area and improving the heat radiation effect are formed on the outer peripheral portion. A module substrate 15 on which the LED chip 14 is mounted is fixed to the upper end surface 11b of the heat sink 11. Inside the heat sink 11, a lighting circuit 16 for supplying electric power to the LED chip 14 is mounted, and the module substrate 15 is connected to the lighting circuit 16 by a wire 17. The lighting circuit 16 is electrically connected to the socket 12 by a wire (not shown).

A columnar diffusion member 18 is erected and fixed to the module substrate 15 fixed to the upper end surface 11b of the heat sink 11. A reflection portion 18a is formed at a front end portion of the diffusion member 18. The reflecting portion 18a is formed of a plurality of reflecting surfaces and is formed in the shape of an inverted polygonal pyramid. A concave portion 18b is formed at a proximal end portion of the diffusion member 18, and the diffusion member 18 is attached to the module substrate 15 so as to cover the concave portion 18b with the LED wafer 14. The light emitted from the LED wafer 14 disposed to face the concave portion 18b enters the diffusing member 18 from the concave portion 18b, is reflected by the reflecting surface of the reflecting portion 18a, and is diffused to the periphery.

On the upper end surface 11b of the heat radiating body 11, two annular ribs 11c and 11d having a large diameter and a small diameter are provided. The two ribs 11c and 11d are arranged concentrically around the diffusion member 18 so as to surround the diffusion member 18. An annular groove 11e is formed by dividing the two ribs 11c and 11d.

As described above, as shown in FIG. 3, the LED lamp 10 of the first embodiment is provided with a glass cover 13 attached to the upper end surface of the radiator 11. The glass cover 13 is formed into an opening end portion 13a having substantially the same diameter as the annular groove 11e, and is detachably attached to the upper end surface of the heat sink 11 so as to fit the opening end portion 13a into the annular groove 11e. 11b.

When the LED chip 14 is lit, the light emitted from the LED chip 14 is diffused by the diffusion member 18, and the periphery of the LED lamp 10 can be illuminated evenly as a white heat bulb.

According to the LED lamp 10 of the first embodiment, the annular groove 11e is provided in the upper end surface 11b of the heat radiating body 11, and the opening end portion 13a is fitted in the annular groove 11e, whereby the globe 13 can be detachably attached to the heat radiating body 11 Since the upper end surface 11b is provided, even if the heat radiating body 11 is inclined, the globe 13 does not fall off from the heat radiating body 11. Further, even if the LED chip 14 is turned on, the lamp cover 13 is not heated to a high temperature like a white heat bulb, and even if the hand touches the lamp cover 13, there is no need to worry about burns, so the lamp cover 13 can be easily replaced by hand. Therefore, it is not only the lampshade 13 of the conventional product, but also the lampshade 13 which is hand-made by itself, and the LED lamp 10 designed to suit the individual's interest can be produced, and the use of the LED lamp 10 can be expanded.

When the opening end portion 13a of the globe 13 is fitted into the annular groove 11e, the groove width is set such that a certain degree of clearance is generated between the opening end portion 13a and the two ribs 11c and 11d, even if it is not high. Since the lamp cover 13 can be mounted on the heat radiating body 11 with precision, it is easy to mount the lamp cover 13 which is produced by itself.

[Example 2]

The LED lamp 20 of the second embodiment of the present invention is shown in Fig. 4. In the LED lamp 10 of the first embodiment, although the annular groove 11e is formed by the two annular ribs 11c and 11d, in the present embodiment, the large-diameter annular ridge of the LED lamp 10 of the first embodiment is used. 11c is omitted, and only the small-diameter annular rib 11d is provided on the upper end surface portion 11b of the heat radiating body 11.

The other structures are the same as those of the LED lamp 10 of the first embodiment, and therefore, the same components are denoted by the same reference numerals, and the description thereof is omitted.

In the LED lamp 20 of the second embodiment, the lamp cover 13 is placed on the upper end surface 11b of the heat radiating body 11 by covering the opening end portion 13a of the lamp cover (not shown) so as to cover the small-diameter annular rib 11d. It is disposed on the heat sink 11 .

According to the LED lamp 20 of the second embodiment, even if the heat radiating body 11 is inclined, since the inner peripheral portion of the opening end portion 13a of the globe 13 is locked to the small-diameter annular rib 11d, it does not fall off from the heat radiating body 11. .

[Example 3]

The LED lamp 30 of the third embodiment of the present invention is shown in Fig. 5. In the LED lamp 20 of the second embodiment, although the small-diameter annular rib 11d is provided on the upper end surface portion 11b of the heat radiating body 11, the LED lamp 30 of the third embodiment is a ring having a radius of curvature and a small diameter. The same circular arc piece 11f of the ribs 11d is provided at three places on the upper end surface 11b of the heat radiating body 11.

The other structures are the same as those of the LED lamp 20 of the second embodiment. Therefore, the same components are denoted by the same reference numerals, and the description thereof is omitted.

In the LED lamp 30 of the third embodiment, the opening 13a of the lamp cover (not shown) is placed on the upper end surface 11b of the heat sink 11 so as to cover the three arc pieces 11f, and the lamp cover 13 is placed on the cover lamp 13 Heat sink 11.

According to the LED lamp 30 of the third embodiment, even if the heat radiating body 11 is tilted, since the inner peripheral portion of the opening end portion 13a of the globe 13 is locked to the circular arc piece 11f, it does not fall off from the heat radiating body 11.

[Example 4]

The LED lamp 40 of the fourth embodiment of the present invention is shown in Fig. 6. In the upper end surface portion 11b of the heat sink 11 of the LED lamp 40, an annular rib 11g is provided along the outer peripheral portion of the upper end surface portion 11b, and an outer wall surface of the upper end surface portion 11b is formed.

The other structures are the same as those of the LED lamp 10 of the first embodiment, and therefore, the same components are denoted by the same reference numerals, and their description is omitted.

In the LED lamp 40 of the fourth embodiment, the lamp cover 13 is placed on the upper end surface portion 11b of the heat radiating body 11 so that the outer peripheral portion of the opening end portion of the globe 13 abuts against the annular ridge 11g. The outer peripheral portion of the opening end portion of the lamp cover 13 that is placed is in contact with the annular bead 11g and is locked to the upper end surface portion.

[Example 5]

Fig. 7 shows an LED lamp 50 of a fifth embodiment of the present invention. In the LED lamp 10 of the first embodiment, the annular groove 11e is formed by the two annular ridges 11c, 11d, and the LED lamp 50 of the fifth embodiment is formed on the upper end surface portion 11b of the heat radiating body 11 There is an annular groove 11h.

In the LED lamp 50 of the present embodiment, the opening end portion of the globe 13 is fitted into the annular groove 11h in the same manner as the LED lamp 10 of the first embodiment, and the globe 13 can be locked to the upper end surface portion 11b of the radiator 11.

According to the LED lamp 50 of the present embodiment, since the ridges are not provided on the upper end surface portion 11b of the heat radiating body 11, there is no fear that the ribs are notched.

In the LED lamps 10, 20, 30, 40, and 50 of the first, second, third, fourth, and fifth embodiments, the lamp cover 13 is placed on the upper end surface 11b of the heat radiating body 11, respectively. The groove 11e, the annular ribs 11d and 11g, and the circular arc piece 11f detachably lock the lamp cover 13, and the opening end of the lamp cover 13 can be bonded with an adhesive without changing the lamp cover 13. The annular groove 11e, the annular ribs 11d and 11g, and the circular arc piece 11f are fixed to the upper end surface 11b of the heat radiating body 11.

10, 20, 30, 40, 50‧‧‧ LED lights

11‧‧‧ Heat sink

11b‧‧‧ upper end

11c, 11d, 11g‧‧‧ annular ribs

11e, 11h‧‧ ‧ annular groove

11f‧‧‧Arc piece

12‧‧‧ lamp holder

13‧‧‧shade

13a‧‧‧Open end

14‧‧‧LED chip

15‧‧‧Module substrate

16‧‧‧Lighting circuit

18‧‧‧Diffusion members

Fig. 1 is a cross-sectional view showing an LED lamp of a first embodiment of the present invention.

Fig. 2 is a perspective view showing the LED lamp of this embodiment.

Fig. 3 is a front elevational view showing a state in which the LED lamp of this embodiment is mounted with a lamp cover.

Fig. 4 is a perspective view showing the LED lamp of the second embodiment of the present invention.

Fig. 5 is a perspective view showing an LED lamp of a third embodiment of the present invention.

Figure 6 is a perspective view showing the LED lamp of the fourth embodiment of the present invention. Figure.

Fig. 7 is a perspective view showing the LED lamp of the fifth embodiment of the present invention.

11‧‧‧ Heat sink

11a‧‧‧ leaves

11b‧‧‧ upper end

11c, 11d‧‧‧ annular ribs

11e‧‧‧ annular groove

12‧‧‧ lamp holder

13‧‧‧shade

13a‧‧‧Open end

14‧‧‧LED chip

16‧‧‧Lighting circuit

18‧‧‧Diffusion members

Claims (4)

An LED lamp comprising: a heat sink; a lamp holder attached to one end of the heat sink; a module substrate on which the LED chip is mounted; and a lighting circuit for supplying power to the LED chip; and fixing the module substrate to the heat sink The other end surface of the heat dissipating circuit is electrically connected to the lamp holder; the other end surface of the heat dissipating body is provided with: a locking for locking the open end of the lamp cover a diffusion member that diffuses light emitted from the LED chip toward the periphery, and the diffusion member is disposed to face the LED wafer, and the card is covered by the card when the lamp cover is covered by the diffusion member. The stop portion detachably locks the lamp cover to the other end surface of the heat sink. The LED lamp according to claim 1, wherein the locking portion surrounds the diffusion member, and an annular groove is formed on the other end surface of the heat sink, and the opening end of the lamp cover is embedded. In the annular groove, the lamp cover is detachably locked to the other end surface of the heat sink. The LED lamp according to claim 1, wherein the locking portion is provided with an annular rib on the other end surface of the heat dissipating body so as to surround the diffusion member, and the opening end of the lamp cover is provided. Covering the annular ribs, the lamp cover is detachably locked to the other end surface of the heat sink. The LED lamp according to claim 1, wherein the locking portion is a method of surrounding the diffusion member, and the heat sink is The other end surface is provided with an annular rib, and the outer peripheral portion of the opening end portion of the globe is brought into contact with the annular rib, whereby the lamp cover is detachably locked to the other end surface of the heat sink.