TWI344057B - Projectors and methods for cooling discharge bulbs of lamp modules - Google Patents

Description

Nine, invention description: [Technical field to which the invention pertains] I / The present invention relates to a method for cooling a discharge portion of a light source module, and particularly to a method for cooling a discharge portion of a light source module by using a fan. [Prior Art] Ultra-high pressure mercury lamps are often used as light sources in conventional projection devices or optical systems. Although ultra-high pressure mercury lamps have high brightness and high luminous efficiency: advantages, due to the minute after the mercury lamps are extinguished The gas temperature and the mercury hot air pressure will still be maintained inside, so it is impossible to immediately discharge the gas again. The heat of the jacket gas that must be dedicated to the lamp (4) can be started again. j Refer to Figure 1A, which shows that the discharge section of the ultra-high pressure mercury lamp is not tolerated. In order to shorten the waiting time for the restart of the mercury lamp, a common solution, such as the mercury lamp is continuously applied to the mercury lamp through the fixed speed fan after the mercury lamp is extinguished: 〇P to accelerate the condensation of the mercury vapor in the discharge portion. The traditional cooling method • ^ can make the discharge part IG quickly cool down, but can not control the vapor condensation position; when restarting the mercury lamp, it is easy to cause the arc L generated between the electrodes u and 12 on both sides of the discharge part 1G to damage the glass tube wall And affecting its service life (as shown in the figure), there is a way to improve the traditional cooling method to promote the condensation of mercury vapor in the discharge 10 to the electrode as much as possible during the cooling process (as shown in Figure 1B). Shown' makes the arc L form at the tip of the electrodes u, 12 (the path with the least impedance) to avoid damage to the glass wall

0535'A22231TWF(N2); A07124: TKLIN 5 1344057. SUMMARY OF THE INVENTION An embodiment of the present invention provides a method for cooling a discharge portion of a light source module. First, a fan cools the discharge portion to a first rotation speed. a first temperature, wherein the first temperature system is related to a condensation temperature of a vapor in the discharge portion; then, when the discharge portion is cooled to a first temperature, the fan cools the discharge portion to a second temperature at a second rotation speed, The vapor in the discharge portion is condensed to a specific ratio at the second temperature, and the second rotation speed is less than the first rotation speed. An embodiment of the present invention further provides a projector including a light source module and a fan, the light source module including a reflector, a discharge portion, and a flow guiding device, wherein the reflector has an opening, and the discharge portion is A vapor is filled and placed in the reflector. The discharge portion includes a first electrode and a second electrode, wherein the first electrode is adjacent to the opening of the reflector, and the second electrode is opposite to the first electrode. The flow guiding device is connected to the reflector and covers the opening, and includes an air inlet and an air outlet. The fan is disposed at the air inlet, wherein the fan first cools the discharge portion to a first temperature at a first rotation speed, and further cools the discharge portion to a second temperature at a second rotation speed; in particular, the second rotation speed is less than At a rotational speed, the first temperature is substantially equal to one of the vapor condensation temperatures, and the vapor is condensed to a specific ratio at the second temperature. An embodiment of the present invention further provides a projector including a light source module and a fan, the light source module including a reflector, a discharge portion, and a flow guiding device, wherein the reflector has an opening, and the discharge portion is filled A vapor is placed in the reflector. The discharge portion includes a first electrode and a second electrode, wherein the first electrode extends toward the opening of the reflector, and the second 0535-A2223lTWF(N2); A07124.TKLIN 6 1344057 is opposite to the first electrode. The flow guiding device is connected to the reflector and covers the opening, and includes an air inlet and an air outlet. In particular, the discharge portion is cooled for a first period when the fan is at a first rotational speed, and cooled for a second period when the fan is at a second rotational speed, and then cooled when the fan is at a second rotational speed. The third period, wherein the foregoing second rotation speed is less than the first rotation speed. [Embodiment] Please refer to FIG. 2A, which is a schematic diagram showing a projector internal light source module 100 and a fan 2A. The light source module is, for example, an ultra-high pressure mercury lamp, and mainly includes a discharge portion 110, a base 12A, a reflector 130, a flow guiding device 14A, and a lens 15〇, wherein the discharge portion HQ is located in the reflector One of the central axes C is fixed to the base 12A, and the flow guiding device 140 is connected to the reflector 130 and the lens 15A, and covers one opening 131 of the reflector 130. - as shown in Fig. 2A, the first electrode 111 and the second electrode 112' of the metal material are respectively included in the discharge portion 11A as the cathode and the anode of the discharge portion n, respectively, wherein the first electrode is along the mandrel The c direction extends toward the aforementioned opening 131, and the second electrode n2 is opposed to the first electrode ηι. In particular, the emperor explained that the discharge portion UG is filled with a gas, and when the voltage of the second electrode in and m is greater than a specific value, an arc is generated from the first electrode (1), and the money is generated. The material_for example is discharged to form a light beam. In the embodiment, the reflector (10) is mainly used for the light emitted by the reverse (four)", and can guide the light through the opening ΐ3ι to wear the mirror

0535-A22231 TWF(N2) : A07124; TKLIN 1344057 = 50' wipes The reflector (10) is, for example, an ellipsoidal reflector, and the discharge portion 130 is placed at a focus of the ellipsoidal reflector 13 . The fan 200 is, for example, an axial fan (four) disposed at an air inlet (4) of the guide device 140. The fan is finely flowed from the air inlet (4)/emulsion to the reflector me' and can be transmitted through the flow guide. Exhaust gas: 142 exhaust gas flow (as indicated by the direction of the arrow in the figure of g 2), thereby dissipating heat from the discharge portion 110. When the light source module 1 is used,

The electric part UG_vapor is condensed in the cooling process to the adjacent opening 131 of the first electrode ιη (as shown in FIG. 1B, the invention adopts a multi-stage fan control technology to achieve the above purpose, and the detailed embodiment thereof is detailed Afterwards. "Next, please - and refer to»2B, 3®, the discharge part n〇 is in the light source, and the 100 use is almost maintained at the operating temperature (about the crane, and when the end of the light source module is used) On the 100th, the fan dissipates heat to the discharge 110 at a first rotation speed S1 (as shown in FIG. 31, so that the discharge portion 11 is in the first period ΤΙ π is rapidly connected to the aforementioned operating temperature (about 9 〇 (rc) Decrease to - the first temperature (about 4G (rc)' wherein the aforementioned first temperature is approximately equal to the condensation temperature of 3 gas in the discharge 4110; that is, when the temperature of the discharge portion 11G reaches about 40 (TC, the internal vapor will Condensation begins. Specifically, when the discharge portion 110 T falls to the first temperature (about 4 〇 (TC), the aforementioned fan 200 will then be from the first speed t (four) to the second speed S2 until the discharge portion is 第- temperature (about 400. 〇 drops to - second temperature (about · 〇, while during this period) Inside (second ridge T2), the amount of vapor condensation in the discharge portion i 1 持续 continues to increase and reaches a certain ratio.

〇 535-A22231TWF (N2); A07124; TKLIN 8 1344057 The discharge temperature lio is about 4 第一 from the first temperature C. During the process of descending to the second temperature production (about 200 ° C), since the vapor is continuously cooled and condensed, the gas pressure in the electric portion 110 is lowered, so that the vapor condensation temperature in the discharge portion 10 is also followed. The change is decreased (the vapor condensation temperature is proportional to the pressure). In the present embodiment, the vapor condensation temperature interval is approximately 2 〇〇 4 〇〇 c > C, and the temperature of the discharge portion 110 is decreased to the second temperature (about 2 〇 ( When rc), it means that 95%/〇 of mercury vapor has been condensed.

As shown in Fig. 3, in the present embodiment, it is preferable that the temperature of the second portion of the discharge portion 11 〇 during the second period is slowed down by the second rotation speed, so that the vapor is stably condensed on the first electrode. The adjacent opening of 1U is strict. In particular, since the first electrode 1U is close to the reflection single 13 〇 = port (3) and the inlet and exhaust ports 14 of the flow guiding device 14 ] 42, that is, the first speed S2 of the J fan 200 is Q, Still can gradually cool down through the natural heat flow' and help the vapor condense in the second electrode of the first electrode ui. However, 'there may be different cooling speed requirements, and the other is the second speed S2, but the second speed It should be smaller than the first turn:: S1 to cause the vapor in the discharge portion 11 to condense at the above position. V When the temperature of the discharge portion 110 drops to the aforementioned second temperature (about fine because the steam has been substantially condensed, the fan 200 can be raised from the first speed S2 to a third speed S3 at this time, so that the discharge portion 11 is: In T3, the second temperature (about 2 〇〇. 〇 accelerates down to _ - the electric part U° re-ignitions. It is necessary to especially use three speeds and one heart speed W, that is, S1>S3>S2. It should be specially stated that the front (10)

0535-A22231 TWF (N2); A07124; TKLIN 9 1344057 = temperature (about 170. 〇 refers to the light source module 1 〇〇 start-up success rate is close to (7) 〇% 妗 ^ degrees; in this embodiment, when the discharge portion 110 At the third temperature (about 170 hours, the startup success rate has exceeded 99% (as shown in FIG. 4, please refer to FIG. 5, and in another embodiment, the third rotation speed S3 may also be equal to the second rotation j). S2 (for example, S3 = S2 = 〇), whereby the temperature of the discharge portion 11〇 is slowly and stably lowered to the third temperature 'and causes the vapor to condense at the adjacent opening 131 of the first electrode (1). It should be understood that In another embodiment, the third rotation, S3 may also be less than or equal to the first rotational speed § and greater than the second rotational speed μ, and the third rotational speed S2 is preferably 〇 (ie, s]^S3>S2=〇), It is also possible to achieve a temperature that causes the vapor to condense in the vicinity of the first electrode (1) to the re-starting temperature of the first electrode (1). "The method described above is for a method of cooling the discharge portion of the light source module." The light source module can be used, for example, as a projection light source of the projector. The invention can control the discharge portion by controlling the fan speed (4) vapor condensation in electricity In the extreme position, the arc generated during startup can be prevented from damaging the glass tube wall of the discharge portion, thereby avoiding shortening the service life of the light source module. Although the present invention is disclosed above in the preferred embodiment, it is used to limit the present invention. The invention is to be understood as being limited by the spirit and scope of the present invention, and the scope of the invention is defined by the scope of the appended claims. 0535-A22231TWF( N2); A07124; TKL!N 10 1344057 • [Simplified description of the drawing] Figure 1A shows the sound map of the discharge section of the conventional ultra-high pressure mercury lamp; Figure 1B shows the sound of the discharge section of the ideal ultra-high pressure mercury lamp. The figure shows the intention of the internal light source module of a projector of the present invention; w FIG. 2B shows the side of the discharge portion of the cooling light source module of the present invention.

Figure 3 is a diagram showing the relationship between the discharge speed of the light source module and the time in Fig. 2A; and the wind is rotated. Fig. 4 is a diagram showing the relationship between the starting temperature of the light source module in Fig. 2A;

Fig. 5 is a view showing another embodiment of the present invention. [Description of main component symbols] Discharge section 10, 11 〇 First electrode 11, 111 Second electrode 12, 112 Arc L Light source module 100 Base 120 Reflector 130 Opening 131 Flow guiding device 140 Air inlet 141 11

0535-A22231 TWF(N2) ;Α07 Ί 24;TKLIN

[ 1344057

Exhaust port ] 42 Lens 150 Fan 200 • Center axis C Arc L First speed S1 Second speed S2 Third speed S3 • First period T1 Second period T2 Third period T3

0535-A2223lTWF(N2); A07124:TKLIN

Claims (1)

1344057 X. Patent Application Range: 1. A projector comprising: a light source module comprising: a reflector having an opening; and a discharge portion filled with a vapor and disposed in the reflector The discharge portion includes: a first electrode adjacent to the opening; a second electrode opposite to the first electrode; • a flow guiding device connecting the reflector and covering the opening, the flow guiding device comprising An air inlet and an air outlet; and a fan is disposed at the air inlet, the fan first cools the discharge portion to a first temperature at a first rotation speed, and then cools the discharge portion to a second rotation speed to a second temperature; wherein the second rotational speed is less than the first rotational speed, the first temperature is related to a condensation temperature of the vapor, and the vapor is condensed to a specific ratio at the second temperature. 2. The projector of claim 1, wherein when the discharge portion is cooled to the second temperature, the fan cools the discharge portion to a third temperature at a third rotation speed, wherein the third rotation speed It is greater than or equal to the second rotational speed. 3. The projector of claim 2, wherein the third rotational speed is less than the first rotational speed. 4. The projector of claim 1, wherein when the discharge portion is cooled to the second temperature, the fan cools the discharge portion to a third temperature at a third rotation speed, wherein the third rotation speed is greater than The second rotational speed. The projector of claim 4, wherein the third rotational speed is less than or equal to the first rotational speed, in the projector of claim 4, wherein the third rotational speed is less than or equal to the first rotational speed. 6. The projector of claim 1, wherein the second rotational speed is zero. 7. The projector of claim 1, wherein the specific ratio is about 95%. 8. The projector of claim 1, wherein the first temperature is substantially equal to the condensation temperature of the vapor. A method for cooling a discharge portion of a light source module, comprising: a fan cooling the discharge portion to a first temperature at a first rotational speed, wherein the first temperature is related to a condensation temperature of one of the vapors in the discharge portion And when the discharge portion is cooled to the first temperature, the fan cools the discharge portion to a second temperature at a second rotation speed, wherein the vapor is condensed to a specific ratio at the second temperature, and the second rotation speed Less than the first rotational speed. 10. The method of claim 9, wherein the method further comprises: when the discharge portion is cooled to the second temperature, the fan cools the discharge portion to a third temperature at a third rotation speed, wherein The third rotational speed is greater than or equal to the second rotational speed, and the third rotational speed is less than the first rotational speed. 11. The method of claim 9, wherein the method further comprises: cooling the discharge portion to a third temperature at a third rotational speed when the discharge portion is cooled to the second temperature, wherein the The third rotational speed is greater than the second 0535-A22231TWF (N2): A07124; TKLiN 14 丄 J / rotational speed ' and the third rotational speed is less than or equal to the first rotational speed. 12. The maximum speed as stated in item 9 of the scope of the patent application is 0. The method wherein the second revolution is substantially equal to the condensation temperature of the vapor as described in claim 9 of the scope of the patent application. /, medium (four) - > dish 14_ a projector comprising: a light source module comprising: a reflector having an opening; and the electrical portion 2 is filled with a gas and disposed in the reflector In the cover, the first electrode is disposed to extend toward the opening; the second electrode is opposite to the first electrode; the device: the reflector covers the opening, the guiding milk and an exhaust port; The fan is disposed at the air inlet; during the cooling, the fan is cooled at a first speed - the first fan is; the second speed is cooled - the second period is followed by the first car = handle Cooling for a third period, and the second rotation speed is 15. The projection two rotation speeds described in item μ of the patent application range is greater than or equal to the second rotation. , the middle and the younger: the projector of the 15th item of the patent application, wherein the first-to-catch is less than the first rotational speed. The projector of claim 14, wherein the third 535~A2223nWF(N2): A07,24; TKUN 15 1344057 has a third rotational speed greater than the second rotational speed. The projector of claim 17, wherein the third rotational speed is less than or equal to the first rotational speed. 19. The projector of claim 14, wherein the discharge portion is cooled to a first temperature during the first period, and the first temperature is associated with a condensation temperature of the gas. 20. The projector of claim 14, wherein the gas condenses to a specific ratio during the second period. 0535-A22231TWF(N2); A07124;TKLlN 16