KR20130044280A

KR20130044280A - Flood light

Info

Publication number: KR20130044280A
Application number: KR1020130040641A
Authority: KR
Inventors: 이점용
Original assignee: (주)우영
Priority date: 2013-04-12
Filing date: 2013-04-12
Publication date: 2013-05-02

Abstract

PURPOSE: A food light is provided to secure enough thickness of a heat dissipating fin, thereby increasing the lifetime of a lamp. CONSTITUTION: A plurality of first inner heat dissipating fins(20) is radially arranged within a first predetermined distance. A plurality of second inner heat dissipating fins(22) is disposed between the first inner heat dissipating fins. The second inner heat dissipating fins are formed within a second predetermined distance which is shorter than the first predetermined distance. A plurality of outer heat dissipating fins(40) is spaced apart from the outer ends of the first and the second heat dissipating fins. A space part is formed by separating the outer ends of the inner heat dissipating fins from the inner ends of the inner heat dissipating fins.

Description

Flood light {Flood light}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floodlight, and more particularly, to a floodlight with enhanced heat radiation function suitable for a compact floodlight.

Larger ones are used for floodlights, but smaller floodlights are used as needed. These floodlights are usually bent by contact if they do not have a significant thickness in consideration of their use and installation location, when the compactness of the 100 mm × 100 mm class is to be arranged tightly if the thickness of the heat radiation fin is thick it's difficult. In addition, the heat sink is generally mounted on the back of the floodlight, and the heat dissipation characteristics are limited by mounting an SMPS box for voltage control on the heat sink, which requires special attention to dissipate heat.

Therefore, floodlights generally have to be turned on for a long time. In the case of small floodlights, it is difficult to arrange cooling fins tightly, and the life of the lamp is shortened if the heat generated by the high temperature for a long time due to insufficient air flow is not properly cooled. there is a problem.

In addition, conventional floodlights have a limit in that aesthetics are degraded as they are cooled by radial radiation fins.

The present invention has been invented to solve the above problems, the technical problem to be achieved by the present invention is to secure a sufficient heat radiation fin thickness and place the heat radiation fins tightly while smoothly flowing the air even when used in a small floodlight lamp due to lack of cooling It is to provide a flood lamp so that the life of the shortened.

Floodlight according to the present invention for achieving the above technical problem,

The front is made of a light irradiation unit for irradiating light, the rear end is made of a heat dissipation unit for discharging heat generated from the light emitting unit, and the heat dissipation unit is a floodlight having a plurality of heat dissipation fins vertically perpendicular to the bottom surface,

A plurality of first inner heat dissipation fins formed radially outwardly from a center by a first predetermined distance;

A plurality of radially disposed to the outside while being disposed between the first inner heat radiation fins and extending from an inner end portion corresponding to a second predetermined distance point shorter than the first predetermined distance from a center to an outer end portion corresponding to the first predetermined distance point; Second inner heat dissipation fins;

A plurality of outer heat dissipation fins formed radially outward from a first distance from the outer ends of the first inner heat dissipation fin and the second inner heat dissipation fin; And

And a space part formed by spaced apart from an inner end portion of the first inner heat dissipation fin and the second inner heat dissipation fin and the inner end portions of the outer heat dissipation fins.

In addition, it is more preferable that the inner and outer ends of the first and second inner radiation fins and the outer radiation fins are rounded.

The floodlight according to the present invention provides a floodlight that ensures sufficient heat radiation fin thickness and closely arranges the heat radiation fins while smoothly flowing air so that the life of the lamp is not shortened by lack of cooling even when used in a compact floodlight.

1 is a perspective view schematically showing the structure of a floodlight according to the present invention;
2 and 3 are perspective views showing the structure of the heat sink provided on the back of the floodlight of FIG.
4 is an enlarged perspective view illustrating structures of the first inner heat dissipation fin and the second inner heat dissipation fin in the heat sink of FIGS. 2 and 3;
5 is an enlarged perspective view illustrating a structure of an outer heat dissipation fin in the heat sink of FIG. 2, and
6 is a view for explaining the effect of the floodlight according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 schematically shows the structure of a floodlight according to the present invention as a perspective view, Figures 2 and 3 show the structure of a heat sink provided on the back of the floodlight of Figure 1 as a perspective view. In addition, FIG. 4 is an enlarged view of the structures of the first inner heat sink fin and the second inner heat sink fin in the heat sinks of FIGS. 2 and 3.

Referring to FIG. 1, the floodlight according to the present invention includes a light radiator 10 for irradiating light on the front surface and a heat radiator 12 for dissipating heat generated from the light radiator. Is provided with a plurality of heat radiation fins perpendicular to the bottom surface. In addition, an SMPS box 14 for voltage control is attached to the heat radiator 12.

3 and 4, the heat dissipation fins provided in the floodlight according to the present invention have a plurality of first inner heat dissipation fins 20 radially formed by a first predetermined distance L1, for example, 20 millimeters, from the center to the outside. And a first predetermined distance L2 disposed between the first inner heat radiating fins 20 and shorter than the first predetermined distance L1 from a center, for example, from an inner end corresponding to a point of 10 millimeters. A plurality of second inner heat dissipation fins 22 are formed radially outward while extending to an outer end portion corresponding to the distance L1.

5 is an enlarged view of a structure of an outer heat dissipation fin in the heat sink of FIGS. 2 and 3. Referring to FIG. 5, the floodlights are spaced apart from the outer ends of the first inner heat dissipation fin 20 and the second inner heat dissipation fin 22 by a predetermined distance, and the plurality of outer heat dissipation fins are formed radially outward to the end of the rear surface. Field 40 is provided.

As a result, the space 42 is formed by separating the outer ends of the first inner heat dissipation fins 20 and the second inner heat dissipation fins 22 from the inner ends of the outer heat dissipation fins 40.

Considering the use of the floodlight and the installation location, the heat dissipation fins should have a considerable thickness, and when the size is small, the heat dissipation fins are impossible to be arranged closely if the thickness of the heat dissipation fins is thick. A plurality of first inner heat dissipation fins formed and extending radially outwardly from an inner end portion corresponding to a second predetermined distance point shorter than the first predetermined distance to an outer end portion corresponding to the first predetermined distance point; The second inner heat dissipation fins were provided to sufficiently increase the density of the heat dissipation fins while ensuring the thickness of the heat dissipation fins.

6 is a view for explaining the effect of the floodlight according to the present invention. Referring to FIG. 6, the floodlight according to the present invention has a structure in which the outer heat dissipation fins 50 are collected from the outside to the inside, so that the air flows faster toward the inside, and the temperature of the air is somewhat increased. The inner end of the first inner heat dissipation fin and the second inner heat dissipation fin and the inner end of the outer heat dissipation fin are separated from each other through the space 52 formed.

At this time, for example, the air exiting to the inner end of each of the heat dissipation fins constituting the outer heat dissipation fins is opened while crossing each other or discharged upwards before reaching the outer end of the first inner heat dissipation fin 54 or the second inner heat dissipation fins 56. As the air flows out, the air flow becomes irregular and the air flow is better and the cooling efficiency is further improved.

The heat dissipation effect of the floodlight according to the present invention and the floodlight having the conventional radial radiation fin structure was compared and evaluated. A floodlight having a conventional radial radiating fin structure corresponds to a comparative example. The temperature sensor was measured in close contact with the heat radiation fins on the outside, the middle, and the inside, and the temperature was recorded by averaging the temperatures measured by the three temperature sensors.

Summer season Winter season 5 hours 10 hours 20 hours 100 hours 5 hours 10 hours 20 hours 100 hours Example 58 ℃ 60 ° C 61 ℃ 62 ℃ 42 ° C 48 ° C 55 ° C 56 ℃ Comparative example 65 ℃ 72 ℃ 78 ℃ 82 ℃ 65 ℃ 65 ℃ 65 ℃ 65 ℃

Referring to Table 1, in the case of the winter season does not exceed 70 ℃ even in the case of the comparative example there is no big problem, but in the case of the summer in the case of the comparative example in the case of more than 10 hours, the temperature rises to about 70 ℃ ~ 80 ℃ over the present invention In the case of summer, stable results were obtained at 61 ° C. to 62 ° C. in summer.

In addition, the inner and outer end portions of the first and second inner heat dissipation fins and the outer heat dissipation fins are rounded, and the space portion has a circular shape, which is aesthetically superior to the heat dissipation fin structure which is simply radial.

Floodlights, on the other hand, need waterproofing in most cases. Figure 7 shows an embodiment in which the waterproof structure is added. Referring to FIG. 7, an O-ring 72 is inserted between the light irradiation part 10 on the front side and the heat dissipation part 12 on the back side to be fitted into a recess formed on the sealing member 70 and the sealing member 70. This structure has the effect of preventing moisture from penetrating by the O-ring 72 fitted in the groove formed on the sealing member 70 while primarily waterproofing by the sealing member 70.

10: light irradiation unit 12: heat dissipation unit
L1: first predetermined distance L2: second predetermined distance
20: first inner heat dissipation fins 22: second inner heat dissipation fins
40: outer heat radiation fins 42: space

Claims

In the front light is irradiated with light, the rear part is made of a heat dissipation unit for discharging the heat generated from the light emitting unit, and the heat dissipation lamp having a plurality of heat dissipation fins vertically entered with respect to the bottom surface,
A plurality of first inner heat dissipation fins formed radially outwardly from a center by a first predetermined distance;
A plurality of radially disposed to the outside while being disposed between the first inner heat radiation fins and extending from an inner end portion corresponding to a second predetermined distance point shorter than the first predetermined distance from a center to an outer end portion corresponding to the first predetermined distance point; Second inner heat dissipation fins;
A plurality of outer heat dissipation fins formed radially outward from a first distance from the outer ends of the first inner heat dissipation fin and the second inner heat dissipation fin; And
And a space portion formed by spaced apart from an inner end portion of the first inner heat dissipation fin and the second inner heat dissipation fin and the inner end portions of the outer heat dissipation fins.

The floodlight of claim 1, wherein inner and outer ends of the first and second inner heat dissipation fins and the outer heat dissipation fins are rounded.

The method according to claim 1 or 2,
A sealing member 70 fitted between the front light irradiation part and the rear heat dissipation part; And
O-ring (72) which is fitted into the groove formed on the sealing member (70); floodlight, characterized in that it further comprises.