CN201680330U

CN201680330U - Heat radiating structure of lamp

Info

Publication number: CN201680330U
Application number: CN2010201988434U
Authority: CN
Inventors: 梁志威
Original assignee: PR Lighting Ltd
Current assignee: PR Lighting Ltd
Priority date: 2010-05-14
Filing date: 2010-05-14
Publication date: 2010-12-22
Anticipated expiration: 2020-05-14

Abstract

A heat radiating structure of a lamp belongs to lamps and lanterns and comprises a main bracket, a bulb, a reflector, a fan, a heat insulating transparent board, a radiator and one or a plurality of closed air guide cavities attached on the main bracket. The heat radiating structure is characterized in that the cage-shaped radiator covers outside the bulb and consists of an upper ring, a base plate and a plurality of fins, wherein one end of each fin along an axis of the radiator is fixed on the circumference of the upper ring and the other end of each fin along the axis of the radiator is fixed on the circumference of the base plate, gas clearances exist between adjacent fins, partial cavity walls of the air guide cavities consist of the main bracket, the air guide cavities extend along the inner wall of the main bracket generally from top down, an air outlet of the fan is communicated with a beginning end of each air guide cavity, and the tail end of the air guide cavity penetrates to a space enclosed by the reflector and the heat insulating transparent board. The airflow from the air outlet diffuses radially and has small resistance, the fin has uniform heat load, and the heat radiating structure has good heat radiating effect and is suitable for being adopted by lamps and lanterns, such as, stage illumination lamps, project lamps and the like.

Description

The heat-dissipating structure of light fixture

Technical field

The utility model relates to light fixture.

Background technology

The power of stage lamp is all bigger, especially generally reaches kilowatt with the light fixture of gas-discharge lamp or halogen tungsten lamp as light source or thousands of watts power consumption, produces a large amount of heats during its work.Traditional radiator structure is by being installed near the fan the light fixture outer surface, and the cold wind of outside is sucked lamp body, through the outside of reflex reflector, forces to discharge the light fixture outside.Because nearer apart with heater herein, motor and fan work environment temperature height easily cause inefficacy, the too high lamp outer casing local melting that also causes of simultaneous temperature, screw skids.

Application number be 200810131481 utility model patent " light source module that is used for lighting apparatus " disclose a kind of generation be used to cool off light source air stream method and be used for the light source module of lighting apparatus, " produce at least one by supply air system and be forced to air stream; this supply air system is positioned at the lighting apparatus housing; this supply air system is connected by at least one pipeline; described pipeline stops at the conduit place, described conduit is along the direction guiding air stream towards light source for it." this utility model takes away the heat that light source produces with forced draft, reduced the temperature of light fixture effectively.

Yet this utility model also has several places to be worth carrying out improved place at least:

At first, the heat radiation disc of this utility model is parallel to the reflector plane of the opening substantially, and the fluorescent tube of this utility model is to install along the axis direction of reflector, and it has only an end to be fixed on the lamp socket, and in the unsettled light path that is in the reflector reflection of the other end; Cooling blast is to go back to the reflector back from reflector is inner again through the reflector bottom circular aperture, the lamp socket of fluorescent tube exactly is in by on the only way which must be passed of the hot-air after the fluorescent tube heating, make the lamp tube electrode clamp portion of this end be in the high temperature gas flow encirclement, this utility model menifold removes to drive hot-air (stream is breathed heavily in manufacturing) for this place introduces cold air, has so just wasted a part of cold air; And flow direction takes place sharply to change when cooling blast is gone back to the reflector back from reflector is inner again through the reflector bottom circular aperture, resistance increases, cause fewly more, make the thermic load of disc inhomogeneous near flow between its disc of heat radiation disc of reflector the rim of a bowl height.

Secondly, every disc central authorities will maintain a certain distance with the reflector back, because reflector is a parabolic shape, make the middle part Circularhole diameter of every disc have nothing in common with each other, thereby the situation that processing one cover disc will be equipped with a plurality of moulds occurs.

The pipeline of this utility model is a pipe, and the diameter that its sectional area is less than with it is the square of the length of side, and pipe is laid in the light fixture can the many spaces of waste, complicated in the PROCESS FOR TREATMENT in pipeline reducing diameter and knee.

The utility model content

The utility model provides a kind of heat-dissipating structure of light fixture, and it has great heat radiation effect and produces easily.

The utility model comprises main frame, bulb, reflector, fan, heat insulation light-passing board and radiator; It is characterized in that radiator is cage type, its shroud is outside bulb, and radiator is made up of last ring, chassis and polylith fin, and every fin is fixed on the ring circumference along an end of its axis, every fin is fixed on the circumference of chassis along the other end of its axis, and air gap is arranged between the adjacent fins; Bulb is installed on the chassis;

It also has one or more airtight wind guide chambers that are attached to main frame, and portion's chamber-separating wall of wind guide chamber is made of main frame, and wind guide chamber roughly extends along the main frame inwall from top to bottom; The air outlet of fan is communicated with the top of wind guide chamber; The end of wind guide chamber penetrates into the space that reflector and heat insulation light-passing board surround.

The utility model is work like this: the air-flow that fan forms enters from the top of wind guide chamber, flow downward along wind guide chamber, flow into reflector and bulb top from the end of wind guide chamber, in the seam inflow radiator of reflector, discharge through the thermovent of radiator then again.

As further improvement of the utility model, wind guide chamber and fan respectively have two, and they are arranged in the body frame body left and right sides symmetrically, and the end of two wind guide chambers penetrates into the space that reflector and heat insulation light-passing board surround by both sides respectively.

The utility model has the advantages that: 1. the air-flow of cage type radiator is radially outwards dispersed, and the heat load distribution of all fins is even, good heat dissipation effect, the low and easy making simple in structure of noise; 2. because fin erectly is installed in the circumferential edges of radiator, and they can not influence the flow direction of radiator internal gas flow, cooling blast is to all the winds dispersed each air gap of balancedly flowing through from the radiator middle part after having absorbed the bulb heat; 3. utilize the groove frame of main frame to add upper cover plate formation wind guide chamber, made full use of the lamp interior space and gone to improve the wind guide chamber cross section, reduced gas-flow resistance, simplify the structure; 4. fan is arranged on position away from pyrotoxin, the operating temperature of fan electromotor is low.

The utility model light fixtures such as stage lighting, Projecting Lamp that suit adopt.

Description of drawings

Fig. 1 is the utility model embodiment schematic diagram;

Fig. 2 is another visual angle schematic diagram of the utility model embodiment;

Fig. 3 is the schematic diagram that embodiment removes main frame and part heat radiator fin;

Fig. 4 is that the A of Fig. 3 is to view;

Fig. 5 is the cooling blast flow schematic diagram of embodiment.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is described in further detail.

Referring to Fig. 1 to Fig. 4, present embodiment is an Adjustable head lamp, it has the main frame 1 that metallic plate is made, two arms 11 are used to install modules such as focusing, light modulation, colour mixture about main frame 1, two arms 11 all have axis hole 12 and lamp base (not shown) hinged, and the shell (not shown) of light fixture also is installed on two arms.

Radiator is connected main frame 1 below; Radiator is cage type, upward encircling 6, chassis 7 and 50 fins 8 by one forms, every fin 8 is fixed on the ring 6 along an end of its axis, every fin 8 is fixed on the chassis 7 along the other end of its axis, 50 fins 8 have air gap along last ring 6 and the evenly upright installation of distribution of chassis 7 circumference between the adjacent fin 8.Fin 8 can be arc-like sheet or flat sheet, makes that the number of molds of processing heat radiator is few, the size of mould is little.Be provided with bulb 2 and reflector 3 in main frame 1 bottom; The bulb 2 of present embodiment is the Gas lamp of 1200W, and the middle part of bulb 2 is spherical, its two ends in a tubular form, bulb 2 roughly is installed on the chassis 7 by two porcelain seats 13 with chassis 7 abreast with its axis; The reflector 3 of glass is shaped on seam 10, and seam 10 shape is similar to bulb 2 gabarits, and stitch 10 and bulb 2 gabarits between have sufficient interval that bulb 2 can be entered in the parabola of reflector 3.

A heat insulation light-passing board 5 has been installed above reflector 3, and the heat that heat insulation light-passing board 5 produces bulb 2 can not rise and enter the light fixture upper space; Reflector 3 is installed in bore edges in the ring 6.

Referring to Fig. 5 and Fig. 1, two airtight wind guide chambers 9 that are attached to main frame 1 are arranged on main frame 1, two wind guide chambers 9 extend from top to bottom along two arms, 11 inwalls of main frame 1 respectively, and all there is a fan 4 at the top of two wind guide chambers 9, and the air outlet of fan 4 is communicated with the top of wind guide chamber 9; The end of two wind guide chambers 9 penetrates into the space that reflector 3 and heat insulation light-passing board 5 are surrounded by the left and right sides respectively.Because two arms of common product main frame 1 all are to be formed by the metallic plate bending, have usually Therefore the cross section of shape can utilize main frame 1 to constitute portion's chamber-separating wall of wind guide chamber 9, adds the wind guide chamber that upper cover plate 14 makes it to become the square-section simply on main frame 1.

The air-flow that fan 4 forms enters from the top of wind guide chamber 9, flows downward along wind guide chamber 9, from the end inflow reflector 3 and bulb 2 tops of wind guide chamber 9, in seam 10 inflow radiators of reflector 3, discharges through the periphery of radiator then again.Violent turning does not appear in all approach that cold flow is flowed through, and air current flow is smooth and easy, the cooling effectiveness height, and noise is little.

Claims

1. the heat-dissipating structure of a light fixture comprises main frame (1), bulb (2), reflector (3), fan (4), heat insulation light-passing board (5) and radiator; It is characterized in that:

Described radiator is cage type, its shroud is outside bulb (2), radiator is made up of last ring (6), chassis (7) and polylith fin (8), every fin (8) is fixed on ring (6) circumference along an end of its axis, every fin (8) is fixed on the circumference of chassis (7) along the other end of its axis, and adjacent fins has air gap between (8); Described bulb (2) is installed on the chassis (7);

It also has one or more airtight wind guide chambers (9) that are attached to main frame (1), and portion's chamber-separating wall of wind guide chamber (9) is made of main frame (1), and wind guide chamber (9) roughly extends along main frame (1) inwall from top to bottom; The air outlet of fan (4) is communicated with the top of wind guide chamber (9); The end of wind guide chamber (9) penetrates into the space that reflector (3) and heat insulation light-passing board (5) are surrounded;

The air-flow that described fan (4) forms enters from the top of wind guide chamber (9), flow downward along wind guide chamber (9), flow into reflector (3) and bulb (2) top from the end of wind guide chamber (9), in seam (10) inflow radiator of reflector (3), discharge through the air gap of radiator then again.

2. according to the heat-dissipating structure of the described light fixture of claim 1, it is characterized in that: described wind guide chamber (9) and fan (4) respectively have two, they are arranged in body frame body (1) left and right sides symmetrically, and the end of two wind guide chambers (9) penetrates into the space that reflector (3) and heat insulation light-passing board (5) are surrounded by the left and right sides respectively.